电源

android 监听电源键

2019-07-14 03:01发布

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MainActivity.java package com.example.androidtest; import android.os.Bundle; import android.os.PowerManager; import android.app.Activity; import android.content.Intent; import android.view.Menu; public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); startService(new Intent(this, MainService.class)); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_main, menu); return true; } }MainService.java package com.example.androidtest; import android.app.Service; import android.content.Intent; import android.content.IntentFilter; import android.os.IBinder; import android.util.Log; public class MainService extends Service { private String tag="test"; @Override public void onCreate() { // TODO Auto-generated method stub super.onCreate(); Log.i(tag, "onCreate"); MainReciver r= new MainReciver(); IntentFilter filter= new IntentFilter(); filter.addAction(Intent.ACTION_SCREEN_OFF); filter.addAction(Intent.ACTION_SCREEN_ON); registerReceiver(r,filter); } @Override public IBinder onBind(Intent intent) { // TODO Auto-generated method stub Log.i(tag, "onBind"); return null; } @Override public void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); } @Override public void onLowMemory() { // TODO Auto-generated method stub super.onLowMemory(); } }
MainReciver.java package com.example.androidtest; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.os.PowerManager; import android.util.Log; public class MainReciver extends BroadcastReceiver { String tag = "test"; @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub Log.i(tag, intent.getAction()); PowerManager pm =(PowerManager)context.getSystemService(Context.POWER_SERVICE); if(pm.isScreenOn()){ Log.e(tag, "ScreenOn"); }else{ Log.e(tag, "ScreenOff"); } } }
代码很简单。有问题欢迎留言。

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