/* * Copyright (C) 2015 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License */ package com.google.android.example.locktasktests; import android.app.Activity; import android.app.ActivityManager; import android.content.Context; import android.content.Intent; import android.os.Bundle; import android.os.Handler; import android.os.Looper; import android.view.View; import android.widget.EditText; public class LaunchActivity extends Activity { Runnable mBackgroundPolling; boolean mRunning; Handler mHandler; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_launch); mBackgroundPolling = new Runnable() { @Override public void run() { if (!mRunning) { return; } ActivityManager activityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); final int color = activityManager.getLockTaskModeState() != ActivityManager.LOCK_TASK_MODE_NONE ? 0xFFFFC0C0 : 0xFFFFFFFF; findViewById(R.id.root_launch).setBackgroundColor(color); mHandler.postDelayed(this, 1000); } }; mHandler = new Handler(Looper.getMainLooper()); } @Override public void onResume() { super.onResume(); mRunning = true; mBackgroundPolling.run(); } @Override public void onPause() { super.onPause(); mRunning = false; } public void onTryLock(View view) { startLockTask(); } public void onTryUnlock(View view) { stopLockTask(); } public void onLaunchMain(View view) { Intent intent = new Intent(this, MainActivity.class); startActivity(intent); } }