设置屏幕常亮 switch

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首先要在AndroidManifest中加权限

    <uses-permission android:name="android.permission.WAKE_LOCK"/>    <uses-permission android:name="android.permission.DEVICE_POWER" />import android.os.BatteryStats.Uid.Wakelock;import android.os.PowerManager;import android.os.PowerManager.WakeLock;

由于 Class是Fragment ，所以用

getActivity()去获取<pre name="code" class="java">getActivity().getSystemService

public class DoovTimerFragment extends DeskClockFragment

mPowerManager = (PowerManager)getActivity().getSystemService(Context.POWER_SERVICE);mWakelock= mPowerManager.newWakeLock(PowerManager.FULL_WAKE_LOCK, "My Lock");screenOn=(Switch)v.findViewById(R.id.ScreenOn);if(screenOn.isChecked()){mWakelock.acquire();}screenOn.setOnCheckedChangeListener(new OnCheckedChangeListener() {@Overridepublic void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {// TODO Auto-generated method stubif(screenOn.isChecked()){mWakelock.acquire();}else{mWakelock.release();}}});

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