1 /* 2 * Copyright 2015, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.managedprovisioning; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.content.Intent; 22 import android.os.Bundle; 23 24 25 /** 26 * A trampoline activity that starts a real activity in a new task. This is used so that we can call 27 * startActivityForResult() to start the real activity, from a non-activity context. The target 28 * activity can the check the caller by {@link Activity#getCallingPackage} or 29 * {@link Activity#getCallingActivity}. 30 */ 31 public class TrampolineActivity extends Activity { 32 private static final String EXTRA_INTENT = "intent"; 33 @Override onCreate(Bundle savedInstanceState)34 protected void onCreate(Bundle savedInstanceState) { 35 super.onCreate(savedInstanceState); 36 Intent target = (Intent) getIntent().getParcelableExtra(EXTRA_INTENT); 37 if (target != null) { 38 // So that the target activity can get caller information via 39 // {@link Activity#getCallingPackage}. 40 startActivityForResult(target, 0); 41 } 42 finish(); 43 } 44 startActivity(Context context, Intent target)45 public static void startActivity(Context context, Intent target) { 46 context.startActivity(createIntent(context, target)); 47 } 48 createIntent(Context context, Intent target)49 public static Intent createIntent(Context context, Intent target) { 50 Intent intent = new Intent(context, TrampolineActivity.class); 51 intent.putExtra(EXTRA_INTENT, target); 52 intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 53 return intent; 54 } 55 } 56