项目中遇见一个这样的需求，就是当软件在一定时间没有操作时候需要弹出广告页面，当点击广告页面时又进行软件操作，也就是广告要在软件打开并且处于未操作状态才会出来。
方法一：用handler+onTouchEvent实现延时发送请求
这个操作最好放到BaseActivity里进行。
[代码]java代码：
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private Handler handler = new Handler();private long time=1000*60*5;@Overridepublic boolean onTouchEvent(MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: handler.removeCallbacks(runnable); break; case MotionEvent.ACTION_UP: startAD(); break; } return super.onTouchEvent(event);}private Runnable runnable = new Runnable() { @Override public void run() { 跳转到广告页面 }};public void startAD() { handler.removeCallbacks(runnable); handler.postDelayed(runnable, time);} |
方法二：通过PowerManager.WakeLock实现
判断屏幕是否变暗的这个思路去实现。
方法三：使用双线程来实现 (时间超时或者在接收到锁屏广播的时候显示)
可以在application或者activity的oncreated方法里面启动监听。
[代码]java代码：
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public class MainActivity extends Activity { private Handler mHandler01 = new Handler(); private Handler mHandler02 = new Handler(); /* 上一次User有动作的Time Stamp */ private Date lastUpdateTime; /* 计算User有几秒没有动作的 */ private long timePeriod; /* 静止超过N秒将自动进入屏保 */ private float mHoldStillTime = 10; /*标识当前是否进入了屏保*/ private boolean isRunScreenSaver; /*时间间隔*/ private long intervalScreenSaver = 1000; private long intervalKeypadeSaver = 1000; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ((Button)findViewById(R.id.start_screen_Saver)).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { // TODO Auto-generated method stub Intent mService = new Intent(MainActivity.this, ScreenService.class); mService.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); startService(mService); } }); /* 初始取得User可触碰屏幕的时间 */ lastUpdateTime = new Date(System.currentTimeMillis()); } /** * 计时线程 */ private Runnable mTask01 = new Runnable() { @Override public void run() { Date timeNow = new Date(System.currentTimeMillis()); /* 计算User静止不动作的时间间距 */ /**当前的系统时间 - 上次触摸屏幕的时间 = 静止不动的时间**/ timePeriod = (long) timeNow.getTime() - (long) lastUpdateTime.getTime(); /*将静止时间毫秒换算成秒*/ float timePeriodSecond = ((float) timePeriod / 1000); if(timePeriodSecond > mHoldStillTime){ if(isRunScreenSaver == false){ //说明没有进入屏保 /* 启动线程去显示屏保 */ mHandler02.postAtTime(mTask02, intervalScreenSaver); /*显示屏保置为true*/ isRunScreenSaver = true; }else{ /*屏保正在显示中*/ } }else{ /*说明静止之间没有超过规定时长*/ isRunScreenSaver = false; } /*反复调用自己进行检查*/ mHandler01.postDelayed(mTask01, intervalKeypadeSaver); } }; /** * 持续屏保显示线程 */ private Runnable mTask02 = new Runnable() { @Override public void run() { // TODO Auto-generated method stub if (isRunScreenSaver == true) { //如果屏保正在显示，就计算不断持续显示 // hideOriginalLayout(); showScreenSaver(); mHandler02.postDelayed(mTask02, intervalScreenSaver); } else { mHandler02.removeCallbacks(mTask02); //如果屏保没有显示则移除线程 } } }; /** * 显示屏保 */ private void showScreenSaver(){ Log.d("danxx", "显示屏保------>"); Intent intent = new Intent(MainActivity.this, ScreenSaverActivity.class); startActivity(intent); } @Override public boolean dispatchKeyEvent(KeyEvent event) { updateUserActionTime(); return super.dispatchKeyEvent(event); } /*用户有操作的时候不断重置静止时间和上次操作的时间*/ public void updateUserActionTime() { Date timeNow = new Date(System.currentTimeMillis()); timePeriod = timeNow.getTime() - lastUpdateTime.getTime(); lastUpdateTime.setTime(timeNow.getTime()); } @Override protected void onResume() { /*activity显示的时候启动线程*/ mHandler01.postAtTime(mTask01, intervalKeypadeSaver); super.onResume(); } @Override protected void onPause() { /*activity不可见的时候取消线程*/ mHandler01.removeCallbacks(mTask01); mHandler02.removeCallbacks(mTask02); super.onPause(); } } |
下面是启动一个服务，当用户按锁屏键锁屏的时候会发送一个广播，我们在服务中接受到广播后可以屏蔽系统的锁屏，显示我们自己的锁屏：
[代码]java代码：
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public class ScreenService extends Service { KeyguardManager mKeyguardManager = null; private KeyguardLock mKeyguardLock = null; BroadcastReceiver mMasterResetReciever; @Override public IBinder onBind(Intent intent) { // TODO Auto-generated method stub return null; } @Override public void onCreate() { //Log.e("ScreenService","onCreate()"); // TODO Auto-generated method stub startScreenService(); super.onCreate(); } @Override public void onStart(Intent intent, int startId) { // Log.e("ScreenService","onStart"); // TODO Auto-generated method stub startScreenService(); } private void startScreenService(){ mKeyguardManager = (KeyguardManager) getSystemService(Context.KEYGUARD_SERVICE); mKeyguardLock = mKeyguardManager.newKeyguardLock(""); mKeyguardLock.disableKeyguard(); //Intent.ACTION_SCREEN_OFF mMasterResetReciever = new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { try { Intent i = new Intent(); i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); i.setClass(context, ScreenSaverActivity.class); context.startActivity(i); } catch (Exception e) { Log.i("mMasterResetReciever:", e.toString()); } } }; registerReceiver(mMasterResetReciever, new IntentFilter(Intent.ACTION_SCREEN_OFF)); } @Override public void onDestroy() { //Log.e("ScreenService","onDestroy()"); super.onDestroy(); unregisterReceiver(mMasterResetReciever); ScreenService.this.stopSelf(); } } |