0e04c1a849
AndroidX needs at least API level 14 (Ice Cream Sandwich) which was released 10 years ago and should not exclude many devices. Having a merged tree simplifies the development.
731 lines
24 KiB
Java
731 lines
24 KiB
Java
package btools.routingapp;
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import java.io.File;
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import java.lang.reflect.Method;
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import java.text.DecimalFormat;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import android.app.Activity;
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import android.app.ActivityManager;
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import android.app.AlertDialog;
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import android.app.Dialog;
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import android.content.Context;
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import android.content.DialogInterface;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.net.ConnectivityManager;
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import android.net.Network;
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import android.net.NetworkCapabilities;
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import android.net.NetworkInfo;
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import android.os.Build;
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import android.os.Bundle;
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import android.os.Environment;
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import android.os.PowerManager;
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import android.os.PowerManager.WakeLock;
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import android.os.StatFs;
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import android.speech.tts.TextToSpeech.OnInitListener;
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import android.util.Log;
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import android.view.KeyEvent;
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import android.widget.EditText;
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import androidx.core.app.ActivityCompat;
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import androidx.core.os.EnvironmentCompat;
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import btools.router.OsmNodeNamed;
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public class BRouterActivity extends Activity {
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private static final int DIALOG_SELECTPROFILE_ID = 1;
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private static final int DIALOG_EXCEPTION_ID = 2;
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private static final int DIALOG_SHOW_DM_INFO_ID = 3;
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private static final int DIALOG_TEXTENTRY_ID = 4;
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private static final int DIALOG_VIASELECT_ID = 5;
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private static final int DIALOG_NOGOSELECT_ID = 6;
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private static final int DIALOG_SHOWRESULT_ID = 7;
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private static final int DIALOG_ROUTINGMODES_ID = 8;
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private static final int DIALOG_MODECONFIGOVERVIEW_ID = 9;
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private static final int DIALOG_PICKWAYPOINT_ID = 10;
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private static final int DIALOG_SELECTBASEDIR_ID = 11;
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private static final int DIALOG_MAINACTION_ID = 12;
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private static final int DIALOG_OLDDATAHINT_ID = 13;
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private static final int DIALOG_SHOW_WP_HELP_ID = 14;
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private static final int DIALOG_SHOW_WP_SCANRESULT_ID = 15;
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private static final int DIALOG_SHOW_REPEAT_TIMEOUT_HELP_ID = 16;
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private static final int DIALOG_SHOW_API23_HELP_ID = 17;
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private BRouterView mBRouterView;
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private PowerManager mPowerManager;
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private WakeLock mWakeLock;
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/** Called when the activity is first created. */
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@Override
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@SuppressWarnings("deprecation")
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public void onCreate( Bundle savedInstanceState )
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{
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super.onCreate( savedInstanceState );
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// Get an instance of the PowerManager
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mPowerManager = (PowerManager) getSystemService( POWER_SERVICE );
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// Create a bright wake lock
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mWakeLock = mPowerManager.newWakeLock( PowerManager.SCREEN_BRIGHT_WAKE_LOCK, getClass().getName() );
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ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE);
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int memoryClass = am.getMemoryClass();
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// instantiate our simulation view and set it as the activity's content
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mBRouterView = new BRouterView( this, memoryClass );
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mBRouterView.init();
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setContentView( mBRouterView );
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}
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@Override
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@SuppressWarnings("deprecation")
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protected Dialog onCreateDialog( int id )
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{
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AlertDialog.Builder builder;
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builder = new AlertDialog.Builder( this );
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builder.setCancelable(false);
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switch ( id )
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{
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case DIALOG_SELECTPROFILE_ID:
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builder.setTitle( "Select a routing profile" );
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builder.setItems( availableProfiles, new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int item )
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{
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selectedProfile = availableProfiles[item];
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mBRouterView.startProcessing( selectedProfile );
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}
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} );
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return builder.create();
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case DIALOG_MAINACTION_ID:
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builder.setTitle( "Select Main Action" );
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builder
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.setItems( new String[]
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{ "Download Manager", "BRouter App" }, new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int item )
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{
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if ( item == 0 )
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startDownloadManager();
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else
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showDialog( DIALOG_SELECTPROFILE_ID );
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}
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}
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)
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.setNegativeButton( "Close", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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finish();
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}
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}
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);
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return builder.create();
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case DIALOG_SHOW_DM_INFO_ID:
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builder
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.setTitle( "BRouter Download Manager" )
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.setMessage(
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"*** Attention: ***\n\n" + "The Download Manager is used to download routing-data "
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+ "files which can be up to 170MB each. Do not start the Download Manager " + "on a cellular data connection without a data plan! "
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+ "Download speed is restricted to 4 MBit/s." ).setPositiveButton( "I know", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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Intent intent = new Intent( BRouterActivity.this, BInstallerActivity.class );
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startActivity( intent );
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// finish();
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}
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} ).setNegativeButton( "Cancel", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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finish();
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}
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} );
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return builder.create();
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case DIALOG_SHOW_WP_HELP_ID:
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builder
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.setTitle( "No Waypoint Database found" )
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.setMessage(
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"The simple scan did not find any map-tool directory including a waypoint database. "
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+ "Reason could be there is no map-tool installed (osmand, locus or oruxmaps), or at an "
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+ "unusual path, or it contains no waypoints yet. That's o.k. if you want to use BRouter "
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+ "in server-mode only - in that case you can still use the 'Server-Mode' button to "
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+ "configure the profile mapping. But you will not be able to use nogo-points or do "
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+ "long distance calculations. If you know the path to your map-tool, you can manually "
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+ "configure it in 'storageconfig.txt'. Or I can do an extended scan searching "
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+ "your sd-card for a valid waypoint database" ).setPositiveButton( "Scan", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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mBRouterView.startWpDatabaseScan();
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}
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} ).setNegativeButton( "Exit", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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finish();
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}
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} );
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return builder.create();
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case DIALOG_SHOW_API23_HELP_ID:
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builder
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.setTitle( "Android >=6 limitations" )
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.setMessage(
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"You are using the BRouter APP on Android >= 6, where classic mode is no longer supported. "
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+ "Reason is that security policy does not permit any longer to read the waypoint databases of other apps. "
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+ "That's o.k. if you want to use BRouter in server-mode only, where the apps actively send the waypoints "
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+ "via a remote procedure call to BRouter (And Locus can also send nogo areas). "
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+ "So the only functions you need to start the BRouter App are 1) to initially define the base directory "
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+ "2) to download routing data files and 3) to configure the profile mapping via the 'Server-Mode' button. "
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+ "You will eventually not be able to define nogo-areas (OsmAnd, Orux) or to do "
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+ "very long distance calculations. If you want to get classic mode back, you can manually install "
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+ "the APK of the BRouter App from the release page ( http://brouter.de/brouter/revisions.html ), which "
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+ "is still built against Android API 10, and does not have these limitations. "
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).setNegativeButton( "Exit", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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finish();
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}
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} );
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return builder.create();
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case DIALOG_SHOW_REPEAT_TIMEOUT_HELP_ID:
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builder
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.setTitle( "Successfully prepared a timeout-free calculation" )
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.setMessage(
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"You successfully repeated a calculation that previously run into a timeout "
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+ "when started from your map-tool. If you repeat the same request from your "
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+ "maptool, with the exact same destination point and a close-by starting point, "
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+ "this request is guaranteed not to time out." ).setNegativeButton( "Exit", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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finish();
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}
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} );
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return builder.create();
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case DIALOG_SHOW_WP_SCANRESULT_ID:
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builder
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.setTitle( "Waypoint Database " )
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.setMessage( "Found Waypoint-Database(s) for maptool-dir: " + maptoolDirCandidate
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+ " Configure that?" ).setPositiveButton( "Yes", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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mBRouterView.saveMaptoolDir( maptoolDirCandidate );
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}
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} ).setNegativeButton( "No", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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finish();
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}
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} );
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return builder.create();
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case DIALOG_OLDDATAHINT_ID:
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builder
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.setTitle( "Local setup needs reset" )
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.setMessage(
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"You are currently using an old version of the lookup-table " + "together with routing data made for this old table. "
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+ "Before downloading new datafiles made for the new table, "
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+ "you have to reset your local setup by 'moving away' (or deleting) "
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+ "your <basedir>/brouter directory and start a new setup by calling the " + "BRouter App again." )
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.setPositiveButton( "OK", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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finish();
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}
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} );
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return builder.create();
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case DIALOG_ROUTINGMODES_ID:
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builder.setTitle( message );
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builder.setMultiChoiceItems( routingModes, routingModesChecked, new DialogInterface.OnMultiChoiceClickListener()
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{
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@Override
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public void onClick( DialogInterface dialog, int which, boolean isChecked )
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{
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routingModesChecked[which] = isChecked;
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}
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} );
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builder.setPositiveButton( "Ok", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int whichButton )
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{
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mBRouterView.configureService( routingModes, routingModesChecked );
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}
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} );
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return builder.create();
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case DIALOG_EXCEPTION_ID:
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builder.setTitle( "An Error occured" ).setMessage( errorMessage ).setPositiveButton( "OK", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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mBRouterView.continueProcessing();
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}
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} );
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return builder.create();
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case DIALOG_TEXTENTRY_ID:
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builder.setTitle( "Enter SDCARD base dir:" );
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builder.setMessage( message );
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final EditText input = new EditText( this );
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input.setText( defaultbasedir );
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builder.setView( input );
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builder.setPositiveButton( "Ok", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int whichButton )
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{
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String basedir = input.getText().toString();
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mBRouterView.startSetup( new File(basedir), true );
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}
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} );
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return builder.create();
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case DIALOG_SELECTBASEDIR_ID:
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builder.setTitle( "Choose brouter data base dir:" );
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// builder.setMessage( message );
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builder.setSingleChoiceItems( basedirOptions, 0, new DialogInterface.OnClickListener()
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{
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@Override
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public void onClick( DialogInterface dialog, int item )
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{
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selectedBasedir = item;
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}
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} );
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builder.setPositiveButton( "Ok", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int whichButton )
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{
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if ( selectedBasedir < availableBasedirs.size() )
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{
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mBRouterView.startSetup( availableBasedirs.get( selectedBasedir ), true );
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}
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else
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{
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showDialog( DIALOG_TEXTENTRY_ID );
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}
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}
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} );
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return builder.create();
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case DIALOG_VIASELECT_ID:
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builder.setTitle( "Check VIA Selection:" );
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builder.setMultiChoiceItems( availableVias, getCheckedBooleanArray( availableVias.length ), new DialogInterface.OnMultiChoiceClickListener()
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{
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@Override
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public void onClick( DialogInterface dialog, int which, boolean isChecked )
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{
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if ( isChecked )
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{
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selectedVias.add( availableVias[which] );
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}
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else
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{
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selectedVias.remove( availableVias[which] );
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}
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}
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} );
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builder.setPositiveButton( "Ok", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int whichButton )
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{
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mBRouterView.updateViaList( selectedVias );
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mBRouterView.startProcessing( selectedProfile );
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}
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} );
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return builder.create();
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case DIALOG_NOGOSELECT_ID:
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builder.setTitle( "Check NoGo Selection:" );
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String[] nogoNames = new String[nogoList.size()];
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for ( int i = 0; i < nogoList.size(); i++ )
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nogoNames[i] = nogoList.get( i ).name;
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final boolean[] nogoEnabled = getCheckedBooleanArray( nogoList.size() );
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builder.setMultiChoiceItems( nogoNames, getCheckedBooleanArray( nogoNames.length ), new DialogInterface.OnMultiChoiceClickListener()
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{
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@Override
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public void onClick( DialogInterface dialog, int which, boolean isChecked )
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{
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nogoEnabled[which] = isChecked;
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}
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} );
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builder.setPositiveButton( "Ok", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int whichButton )
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{
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mBRouterView.updateNogoList( nogoEnabled );
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mBRouterView.startProcessing( selectedProfile );
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}
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} );
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return builder.create();
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case DIALOG_SHOWRESULT_ID:
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String leftLabel = wpCount < 0 ? ( wpCount != -2 ? "Exit" : "Help") : ( wpCount == 0 ? "Select from" : "Select to/via" );
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String rightLabel = wpCount < 2 ? ( wpCount == -3 ? "Help" : "Server-Mode" ) : "Calc Route";
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builder.setTitle( title ).setMessage( errorMessage ).setPositiveButton( leftLabel, new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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if ( wpCount == -2 )
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{
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showWaypointDatabaseHelp();
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}
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else if ( wpCount == -1 || wpCount == -3 )
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{
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finish();
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}
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else
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{
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mBRouterView.pickWaypoints();
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}
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}
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} ).setNegativeButton( rightLabel, new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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if ( wpCount == -3 )
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{
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showRepeatTimeoutHelp();
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}
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else if ( wpCount < 2 )
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{
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mBRouterView.startConfigureService();
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}
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else
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{
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mBRouterView.finishWaypointSelection();
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mBRouterView.startProcessing( selectedProfile );
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}
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}
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} );
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return builder.create();
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case DIALOG_MODECONFIGOVERVIEW_ID:
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builder.setTitle( "Success" ).setMessage( message ).setPositiveButton( "Exit", new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int id )
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{
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finish();
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}
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} );
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return builder.create();
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case DIALOG_PICKWAYPOINT_ID:
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builder.setTitle( wpCount > 0 ? "Select to/via" : "Select from" );
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builder.setItems( availableWaypoints, new DialogInterface.OnClickListener()
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{
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public void onClick( DialogInterface dialog, int item )
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{
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mBRouterView.updateWaypointList( availableWaypoints[item] );
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mBRouterView.startProcessing( selectedProfile );
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}
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} );
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return builder.create();
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default:
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return null;
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}
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}
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private boolean[] getCheckedBooleanArray( int size )
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{
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boolean[] checked = new boolean[size];
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for ( int i = 0; i < checked.length; i++ ) checked[i] = true;
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return checked;
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}
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private String[] availableProfiles;
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private String selectedProfile = null;
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private List<File> availableBasedirs;
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private String[] basedirOptions;
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private int selectedBasedir;
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private String[] availableWaypoints;
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private String[] routingModes;
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private boolean[] routingModesChecked;
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private String defaultbasedir = null;
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private String message = null;
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private String[] availableVias;
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private Set<String> selectedVias;
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private List<OsmNodeNamed> nogoList;
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private String maptoolDirCandidate;
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public boolean isOnline(Context context)
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{
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boolean result = false;
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ConnectivityManager connectivityManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
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if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
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Network nw = connectivityManager.getActiveNetwork();
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if (nw == null) return false;
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NetworkCapabilities nwc = connectivityManager.getNetworkCapabilities(nw);
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if (nwc == null)return false;
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result = nwc.hasTransport(NetworkCapabilities.TRANSPORT_WIFI) |
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nwc.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR) |
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nwc.hasTransport(NetworkCapabilities.TRANSPORT_ETHERNET) ;
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} else {
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NetworkInfo ni = connectivityManager.getActiveNetworkInfo();
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if (ni == null) return false;
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result = ni.getType() == ConnectivityManager.TYPE_WIFI ||
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ni.getType() == ConnectivityManager.TYPE_MOBILE ||
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ni.getType() == ConnectivityManager.TYPE_ETHERNET;
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}
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return result;
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}
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@SuppressWarnings("deprecation")
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public void selectProfile( String[] items )
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{
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availableProfiles = items;
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// if we have internet access, first show the main action dialog
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if ( isOnline(this) )
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{
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showDialog( DIALOG_MAINACTION_ID );
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}
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else
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{
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showDialog( DIALOG_SELECTPROFILE_ID );
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}
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}
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@SuppressWarnings("deprecation")
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public void startDownloadManager()
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{
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if ( !mBRouterView.hasUpToDateLookups() )
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{
|
|
showDialog( DIALOG_OLDDATAHINT_ID );
|
|
}
|
|
else
|
|
{
|
|
showDialog( DIALOG_SHOW_DM_INFO_ID );
|
|
}
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void selectBasedir( ArrayList<File> items, String defaultBasedir, String message )
|
|
{
|
|
this.defaultbasedir = defaultBasedir;
|
|
this.message = message;
|
|
availableBasedirs = items;
|
|
ArrayList<Long> dirFreeSizes = new ArrayList<Long>();
|
|
for ( File f : items )
|
|
{
|
|
long size = 0L;
|
|
try
|
|
{
|
|
StatFs stat = new StatFs( f.getAbsolutePath() );
|
|
size = (long) stat.getAvailableBlocks() * stat.getBlockSize();
|
|
}
|
|
catch (Exception e) { /* ignore */ }
|
|
dirFreeSizes.add( Long.valueOf( size ) );
|
|
}
|
|
|
|
basedirOptions = new String[items.size() + 1];
|
|
int bdidx = 0;
|
|
DecimalFormat df = new DecimalFormat( "###0.00" );
|
|
for ( int idx = 0; idx < availableBasedirs.size(); idx++ )
|
|
{
|
|
basedirOptions[bdidx++] = availableBasedirs.get( idx ) + " (" + df.format( dirFreeSizes.get( idx ) / 1024. / 1024. / 1024. ) + " GB free)";
|
|
}
|
|
basedirOptions[bdidx] = "Enter path manually";
|
|
|
|
showDialog( DIALOG_SELECTBASEDIR_ID );
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void selectRoutingModes( String[] modes, boolean[] modesChecked, String message )
|
|
{
|
|
routingModes = modes;
|
|
routingModesChecked = modesChecked;
|
|
this.message = message;
|
|
showDialog( DIALOG_ROUTINGMODES_ID );
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void showModeConfigOverview( String message )
|
|
{
|
|
this.message = message;
|
|
showDialog( DIALOG_MODECONFIGOVERVIEW_ID );
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void selectVias( String[] items )
|
|
{
|
|
availableVias = items;
|
|
selectedVias = new HashSet<String>( availableVias.length );
|
|
for ( String via : items )
|
|
selectedVias.add( via );
|
|
showDialog( DIALOG_VIASELECT_ID );
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void selectWaypoint( String[] items )
|
|
{
|
|
availableWaypoints = items;
|
|
showNewDialog( DIALOG_PICKWAYPOINT_ID );
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void showWaypointDatabaseHelp()
|
|
{
|
|
if ( mBRouterView.canAccessSdCard )
|
|
{
|
|
showNewDialog( DIALOG_SHOW_WP_HELP_ID );
|
|
}
|
|
else
|
|
{
|
|
showNewDialog( DIALOG_SHOW_API23_HELP_ID );
|
|
}
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void showRepeatTimeoutHelp()
|
|
{
|
|
showNewDialog( DIALOG_SHOW_REPEAT_TIMEOUT_HELP_ID );
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void showWpDatabaseScanSuccess( String bestGuess )
|
|
{
|
|
maptoolDirCandidate = bestGuess;
|
|
showNewDialog( DIALOG_SHOW_WP_SCANRESULT_ID );
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void selectNogos( List<OsmNodeNamed> nogoList )
|
|
{
|
|
this.nogoList = nogoList;
|
|
showDialog( DIALOG_NOGOSELECT_ID );
|
|
}
|
|
|
|
private Set<Integer> dialogIds = new HashSet<Integer>();
|
|
|
|
private void showNewDialog( int id )
|
|
{
|
|
if ( dialogIds.contains( Integer.valueOf( id ) ) )
|
|
{
|
|
removeDialog( id );
|
|
}
|
|
dialogIds.add( Integer.valueOf( id ) );
|
|
showDialog( id );
|
|
}
|
|
|
|
private String errorMessage;
|
|
private String title;
|
|
private int wpCount;
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void showErrorMessage( String msg )
|
|
{
|
|
errorMessage = msg;
|
|
showNewDialog( DIALOG_EXCEPTION_ID );
|
|
}
|
|
|
|
@SuppressWarnings("deprecation")
|
|
public void showResultMessage( String title, String msg, int wpCount )
|
|
{
|
|
errorMessage = msg;
|
|
this.title = title;
|
|
this.wpCount = wpCount;
|
|
showNewDialog( DIALOG_SHOWRESULT_ID );
|
|
}
|
|
|
|
@Override
|
|
protected void onResume()
|
|
{
|
|
super.onResume();
|
|
/*
|
|
* when the activity is resumed, we acquire a wake-lock so that the screen
|
|
* stays on, since the user will likely not be fiddling with the screen or
|
|
* buttons.
|
|
*/
|
|
mWakeLock.acquire();
|
|
}
|
|
|
|
@Override
|
|
protected void onPause()
|
|
{
|
|
super.onPause();
|
|
/*
|
|
* When the activity is paused, we make sure to stop the router
|
|
*/
|
|
|
|
// Stop the simulation
|
|
mBRouterView.stopRouting();
|
|
|
|
// and release our wake-lock
|
|
mWakeLock.release();
|
|
}
|
|
|
|
public boolean checkSelfPermission (Context context, String perm ) {
|
|
boolean b = checkSelfPermission(context, perm);
|
|
if (b) {
|
|
ActivityCompat.requestPermissions (this, new String[]{perm}, 0);
|
|
}
|
|
|
|
return b;
|
|
}
|
|
|
|
private String getStorageState(File f) {
|
|
return EnvironmentCompat.getStorageState(f); //Environment.MEDIA_MOUNTED
|
|
}
|
|
|
|
public ArrayList<File> getStorageDirectories () {
|
|
ArrayList<File> list = null;
|
|
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
|
|
list = new ArrayList<File>(Arrays.asList(getExternalMediaDirs()));
|
|
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
|
|
list = new ArrayList<File>(Arrays.asList(getExternalFilesDirs(null)));
|
|
}
|
|
ArrayList<File> res = new ArrayList<File>();
|
|
|
|
for (File f : list) {
|
|
if (f != null) {
|
|
if (getStorageState(f).equals(Environment.MEDIA_MOUNTED))
|
|
res.add (f);
|
|
}
|
|
}
|
|
|
|
if (checkExternalStorageWritable()) {
|
|
res.add(Environment.getExternalStorageDirectory());
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
private boolean checkExternalStorageWritable() {
|
|
boolean isWritable = false;
|
|
try {
|
|
File sd = Environment.getExternalStorageDirectory();
|
|
File testDir = new File( sd, "brouter" );
|
|
boolean didExist = testDir.isDirectory();
|
|
if ( !didExist )
|
|
{
|
|
testDir.mkdir();
|
|
}
|
|
File testFile = new File( testDir, "test" + System.currentTimeMillis() );
|
|
testFile.createNewFile();
|
|
if ( testFile.exists() ) {
|
|
testFile.delete();
|
|
isWritable = true;
|
|
}
|
|
}
|
|
catch (Throwable t) {
|
|
// ignore
|
|
}
|
|
return isWritable;
|
|
}
|
|
}
|