Android WakeLock

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在Android中,申请WakeLock可以让你的进程持续执行即使手机进入睡眠模式,

比较实用的是比如:

后台有网络功能,可以保证操作持续进行.

方法: 在操作之前加入

         PowerManager pm = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
         wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, Constants.TAG);
         wakeLock.acquire();

别忘了在操作完毕之后释放掉

   if (wakeLock != null) {
            wakeLock.release();
            wakeLock = null;
         }

例子:

public void setWakeMode(Context context, int mode) {
  boolean washeld = false;
  if (mWakeLock != null) {
   if (mWakeLock.isHeld()) {
    washeld = true;
    mWakeLock.release();
   }
   mWakeLock = null;
  }

  PowerManager pm = (PowerManager) context
    .getSystemService(Context.POWER_SERVICE);
  mWakeLock = pm.newWakeLock(mode | PowerManager.ON_AFTER_RELEASE,
    CloudGamePlayer.class.getName());
  mWakeLock.setReferenceCounted(false);
  if (washeld) {
   mWakeLock.acquire();
  }
}