我想创建一个应用程序,知道用户何时使用手机(启动屏幕并关闭屏幕)。一段时间后,我需要调用doSomething()
方法。
问题:
1.我如何知道用户何时开始使用手机以及何时关闭屏幕?
2.我应该使用Service或IntentService吗?在我的情况下哪个更好?
答案 0 :(得分:1)
你可以使用BroadcastReceiver和Service尝试这样的事情:
您的班级使用BroadcastReceiver:
public class ScreenReceiver extends BroadcastReceiver {
private boolean screenOff;
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) {
screenOff = true;
} else if (intent.getAction().equals(Intent.ACTION_SCREEN_ON)) {
screenOff = false;
}
Intent i = new Intent(context, UpdateService.class);
i.putExtra("screen_state", screenOff);
context.startService(i);
}
}
服务:
public static class ScreenService extends Service {
@Override
public void onCreate() {
super.onCreate();
IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON);
filter.addAction(Intent.ACTION_SCREEN_OFF);
BroadcastReceiver mReceiver = new ScreenReceiver();
registerReceiver(mReceiver, filter);
}
@Override
public void onStart(Intent intent, int startId) {
boolean screenOn = intent.getBooleanExtra("screen_state", false);
if (!screenOn) {
//Implement here your code
} else {
//Implement here your code
}
}
}