如何关闭唤醒锁？

Question

我尝试使用此代码在纵向时打开proximitywakelock，在横向时关闭它，但它始终保持活动状态：

//in onCreate() of my Activity

    PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
    mProximityWakeLock = pm.newWakeLock(32, ""); // proximity_wake_lock=32
    mProximityWakeLock.setReferenceCounted(false);

    if (getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) {
        Toast.makeText(this, "non landascape", Toast.LENGTH_SHORT).show();

        if (!mProximityWakeLock.isHeld()) {
            mProximityWakeLock.acquire();
            Toast.makeText(this, "acquired", Toast.LENGTH_SHORT).show();
        }

        if (!mProximityWakeLock.isHeld())
            Toast.makeText(this, "not held", Toast.LENGTH_SHORT).show();
        else
            Toast.makeText(this, " held", Toast.LENGTH_SHORT).show();

    } else {

        if (!mProximityWakeLock.isHeld())
            Toast.makeText(this, "not held", Toast.LENGTH_SHORT).show();
        else
            Toast.makeText(this, " held", Toast.LENGTH_SHORT).show();

        Toast.makeText(this, "landascape", Toast.LENGTH_SHORT).show();

        if (mProximityWakeLock.isHeld()) {
            mProximityWakeLock.release();
            Toast.makeText(this, "released", Toast.LENGTH_SHORT).show();
        }

    }

看起来在横向时它从未被保持...... isHeld() 实际上是如何工作的？ 代码有什么问题？

Answer 1

我看起来每次旋转屏幕时都会创建一个新的唤醒锁，并且不会保留新的唤醒锁。

如果您查看日志，您可能会看到有关泄漏唤醒锁的信息。