/
WeakLockService.java
59 lines (47 loc) · 1.49 KB
/
WeakLockService.java
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package kim.hsl.bp;
import android.annotation.SuppressLint;
import android.app.Service;
import android.content.Intent;
import android.os.Build;
import android.os.IBinder;
import android.os.PowerManager;
import androidx.annotation.Nullable;
import androidx.annotation.RequiresApi;
public class WeakLockService extends Service {
public static final String TAG = "WeakLockService";
/**
* 唤醒锁
*/
private PowerManager.WakeLock mWakeLock;
@Nullable
@Override
public IBinder onBind(Intent intent) {
return null;
}
@SuppressLint("InvalidWakeLockTag")
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
public void onCreate() {
super.onCreate();
// 跨进程获取 PowerManager 服务
PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
// 判断是否支持 CPU 唤醒
boolean isWakeLockLevelSupported = powerManager.
isWakeLockLevelSupported(PowerManager.PARTIAL_WAKE_LOCK);
// 支持 CPU 唤醒 , 才保持唤醒
if(isWakeLockLevelSupported){
// 创建只唤醒 CPU 的唤醒锁
mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "WAKE_LOCK");
// 开始唤醒 CPU
mWakeLock.acquire();
}
}
@Override
public void onDestroy() {
super.onDestroy();
// 释放 CPU 唤醒锁
if(mWakeLock != null){
mWakeLock.release();
}
}
}