android接收到蓝牙配对请求时如何点亮屏幕具体实现
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软件编程 / Android
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file: BluetoothEventLoop.java
GB/GB2/GB3:
1. import android.os.PowerManager;
2. 变量申明:private PowerManager.WakeLock mWakeLock;
3. BluetoothEventLoop(){} 构造函数里面添加定义:
PowerManager pm = (PowerManager)context.getSystemService(Context.POWER_SERVICE);
mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK | PowerManager.ACQUIRE_CAUSES_WAKEUP
| PowerManager.ON_AFTER_RELEASE, TAG);
mWakeLock.setReferenceCounted(false);
4. onRequestPairingConsent(){
...
mWakeLock.acquire(5000); // xintong , 亮屏5s
Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
...
}
5. onRequestPasskeyConfirmation(){
...
mWakeLock.acquire(5000); // xintong , 亮屏5s
Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
...
}
6. onRequestPasskey(){
...
mWakeLock.acquire(5000); // xintong , 亮屏5s
Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
...
}
7. onRequestPinCode(){
...
mWakeLock.acquire(5000); // xintong 亮屏5s
Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
...
}
8. onDisplayPasskey(){
...
mWakeLock.acquire(5000); // xintong , 亮屏5s
Intent intent = new Intent(BluetoothDevice.ACTION_PAIRING_REQUEST);
...
}
ICS/ICS2/JB/JB2/JB3:
省略掉GB中修改的第1、2、3步;
对4、5、6、7、8中修改的function中:将原生的mWakeLock.acquire(); 改为mWakeLock.acquire(5000), 删掉对应function中的mWakeLock.release();
修改完后,模块会被编译进framework.jar
TextView显示系统时间(时钟功能带秒针变化
用System.currentTimeMillis()可以获取系统当前的时间,我们可以开启一个线程,然后通过handler发消息,来实时的更新TextView上显示的系统时间,可以做一个时钟的功能
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