Intent to start navigation activity - payload

gistfile1.java

final int defaultFlag = PackageManager.MATCH_DEFAULT_ONLY;
Intent[] explicitIntents;

//see an example here http://stackoverflow.com/questions/2662531/launching-google-maps-directions-via-an-intent-on-android
private Intent[] getExplicitIntents() {
	if(explicitIntents == null) {
		PackageManager currentPM = getPackageManager();
		explicitIntents = new Intent[]{
				new Intent("android.intent.action.navigon.START_PUBLIC"), //navigon with public intent
				currentPM.getLaunchIntentForPackage("com.navigon.navigator"), //navigon without public intent
				currentPM.getLaunchIntentForPackage("hr.mireo.dp"), //ginius driver dont panic
				currentPM.getLaunchIntentForPackage("com.ndrive.android"), //ndrive
				currentPM.getLaunchIntentForPackage("com.sygic.aura"), //aura
				currentPM.getLaunchIntentForPackage("org.microemu.android.se.appello.lp.Lightpilot") // wisepilot
			};
	}
	return explicitIntents;
}

/**
 * Following the suggestion at http://stackoverflow.com/questions/5801684/intent-to-start-a-navigation-activity/5809637#5809637
 * Will query up the system for desired applications and then let the user decide which one they would like to launch.
 */
protected void showNavigation() {
	//explicit activities (known apps)
	//build the list and show it in a dialog
	int titleColor = Color.rgb(28, 97, 211);
	int headerColor = Color.rgb(98, 151, 251);
	HashMap<String, ArrayList<TableRow>> rows = new HashMap<String, ArrayList<TableRow>>();
	ArrayList<TableRow> tableRows = new ArrayList<TableRow>();
	TableRow row = new TableRow(this);
	row.setLayoutParams(new TableRow.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
	row.setGravity(Gravity.CENTER);
	row.setBackgroundColor(headerColor);
	TextView recyclableTextView = new TextView(this);
	recyclableTextView.setText("Explicitly known");
	recyclableTextView.setTextColor(Color.BLACK);
	recyclableTextView.setTextSize(20);
	int screenWidth = getResources().getDisplayMetrics().widthPixels;
	recyclableTextView.setWidth(100 * screenWidth / 100); //take up 100% of the width
	recyclableTextView.setPadding(5, 5, 5, 5);
	row.addView(recyclableTextView);
	tableRows.add(row);
	PackageManager currentPM = getPackageManager();
	for(int i = 0; i < getExplicitIntents().length; i++) {
		Intent navigationAppIntent = explicitIntents[i];
		try {
			for(ResolveInfo explicitActivityInfo : currentPM.queryIntentActivities(navigationAppIntent, defaultFlag)) {
				try {
					row = new TableRow(this);
					row.setLayoutParams(new TableRow.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
					row.setGravity(Gravity.CENTER);
					recyclableTextView = new TextView(this);
					recyclableTextView.setText(explicitActivityInfo.loadLabel(currentPM) + " (" + explicitActivityInfo.activityInfo.applicationInfo.packageName + ")");
					recyclableTextView.setTypeface(Typeface.DEFAULT_BOLD);
					recyclableTextView.setTextColor(Color.BLACK);
					recyclableTextView.setTextSize(20);
					recyclableTextView.setWidth(100 * screenWidth / 100);
					recyclableTextView.setPadding(5, 5, 5, 5);
					row.addView(recyclableTextView);
					row.setContentDescription("" + i); //this descriptor will be used in the following listener to find out which row was selected
					//set onclick listener to each row (it already has a descriptor pointing the intent index it represents from the array)
					row.setOnClickListener(new View.OnClickListener() {
						@Override
						public void onClick(View v) {
							String desc = "" + v.getContentDescription();
							if(desc != null) {
								try {
									startActivity(getExplicitIntents()[Integer.parseInt(desc)]);
								}
								catch(Exception e) {
									e.printStackTrace();
								}
							}
						}
					});
					row.setMinimumHeight(100);
					tableRows.add(row);
				}
				catch(Exception e) {
					e.printStackTrace();
				}
			}
		}
		catch(Exception e) {
			e.printStackTrace();
		}
	}
	//add implicit apps option
	row = new TableRow(this);
	row.setLayoutParams(new TableRow.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
	row.setGravity(Gravity.CENTER);
	row.addView(makePoiTableRowWithText("Find Implicitly", true, 100));
	row.setMinimumHeight(150);
	//add a listener to this view to let the OS find matching applications
	row.setOnClickListener(new View.OnClickListener() {
		@Override
		public void onClick(View v) {
			Intent implicitIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("google.navigation:q="); //NOTE: google navigation can't be launched without destination
			startActivity(implicitIntent);
		}
	});
	tableRows.add(row);
	rows.put("Compatible apps", tableRows);
	showTableDialog(rows, "Launch GPS Navigator", titleColor, R.drawable.menu_gps);
}