概述
"android.intent.action.HEADSET_PLUG"
"android.intent.action.ACTION_SCREEN_ON"
"android.intent.action.ACTION_SCREEN_OFF"
其中三个，他们无法使用Manifest注册。Android核心向他们添加了“Intent.FLAG_RECEIVER_REGISTERED_ONLY”(也许..我只检查了代码“HEADSET_PLUG”)。
所以，我们应该使用“动态寄存器”。如下......
private BroadcastReceiver mPowerKeyReceiver = null;
private void registBroadcastReceiver() {
final IntentFilter theFilter = new IntentFilter();
/** System Defined Broadcast */
theFilter.addAction(Intent.ACTION_SCREEN_ON);
theFilter.addAction(Intent.ACTION_SCREEN_OFF);
mPowerKeyReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String strAction = intent.getAction();
if (strAction.equals(Intent.ACTION_SCREEN_OFF) || strAction.equals(Intent.ACTION_SCREEN_ON)) {
// > Your playground~!
}
}
};
getApplicationContext().registerReceiver(mPowerKeyReceiver, theFilter);
}
private void unregisterReceiver() {
int apiLevel = Build.VERSION.SDK_INT;
if (apiLevel >= 7) {
try {
getApplicationContext().unregisterReceiver(mPowerKeyReceiver);
}
catch (IllegalArgumentException e) {
mPowerKeyReceiver = null;
}
}
else {
getApplicationContext().unregisterReceiver(mPowerKeyReceiver);
mPowerKeyReceiver = null;
}
}
最后
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