Java tutorial
//package com.java2s; //License from project: Apache License import android.app.Activity; import android.content.Intent; import android.widget.Toast; public class Main { /** * Start System Activity. * Display Toast with the message if activity not available * @param activity- {@link Activity} instance * @param action - String representing {@link Settings} * @param altToastMessage - Message to be displayed in Toast if {@link Activity} not available */ public static void startSystemActivity(Activity activity, String action, String altToastMessage) { Intent locationIntent = new Intent(action); if (locationIntent.getAction() != null) { activity.startActivity(locationIntent); } else { if (altToastMessage != null) { showToast(activity, altToastMessage); } } } /** * Display Toast with the input message * @param activity - {@link Activity} instance * @param message - Message to be displayed in Toast */ public static void showToast(Activity activity, String message) { Toast.makeText(activity, message, Toast.LENGTH_LONG).show(); } }