1 /* 2 * Copyright (C) 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.google.android.example.locktasktests; 18 19 import android.app.Activity; 20 import android.app.ActivityManager; 21 import android.content.Context; 22 import android.content.Intent; 23 import android.os.Bundle; 24 import android.os.Handler; 25 import android.os.Looper; 26 import android.view.View; 27 import android.widget.EditText; 28 29 public class LaunchActivity extends Activity { 30 31 Runnable mBackgroundPolling; 32 boolean mRunning; 33 Handler mHandler; 34 35 @Override onCreate(Bundle savedInstanceState)36 protected void onCreate(Bundle savedInstanceState) { 37 super.onCreate(savedInstanceState); 38 setContentView(R.layout.activity_launch); 39 mBackgroundPolling = new Runnable() { 40 @Override 41 public void run() { 42 if (!mRunning) { 43 return; 44 } 45 ActivityManager activityManager = 46 (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); 47 final int color = activityManager.getLockTaskModeState() != 48 ActivityManager.LOCK_TASK_MODE_NONE ? 0xFFFFC0C0 : 0xFFFFFFFF; 49 findViewById(R.id.root_launch).setBackgroundColor(color); 50 mHandler.postDelayed(this, 1000); 51 } 52 }; 53 mHandler = new Handler(Looper.getMainLooper()); 54 } 55 56 @Override onResume()57 public void onResume() { 58 super.onResume(); 59 mRunning = true; 60 mBackgroundPolling.run(); 61 } 62 63 @Override onPause()64 public void onPause() { 65 super.onPause(); 66 mRunning = false; 67 } 68 onTryLock(View view)69 public void onTryLock(View view) { 70 startLockTask(); 71 } 72 onTryUnlock(View view)73 public void onTryUnlock(View view) { 74 stopLockTask(); 75 } 76 onLaunchMain(View view)77 public void onLaunchMain(View view) { 78 Intent intent = new Intent(this, MainActivity.class); 79 startActivity(intent); 80 } 81 } 82