我有一个在后台启动线程的应用程序。该线程读取了logcat：
public class MonitorLogService extends Service{
...
private void handleCommand(Intent intent){
if (ACTION_FOREGROUND.equals(intent.getAction())) {
// In this sample, we'll use the same text for the ticker and the expanded notification
CharSequence text = getText(R.string.app_name);
// Set the icon, scrolling text and timestamp
Notification notification = new Notification(R.drawable.stat_notify, text, System.currentTimeMillis());
// The PendingIntent to launch our activity if the user selects this notification
PendingIntent contentIntent = PendingIntent.getActivity(this, 0, new Intent(this, ConfigActivity.class), 0);
// Set the info for the views that show in the notification panel.
notification.setLatestEventInfo(this, text,getText(R.string.service_running), contentIntent);
startForegroundCompat(R.string.service_running, notification);
monitorLogThread = new MonitorLogThread();
monitorLogThread.start();
}
}
private static Thread monitorLogThread;
private class MonitorLogThread extends Thread{
BufferedReader br;
@Override
public void run() {
try {
Process process;
process = Runtime.getRuntime().exec("logcat -c");
process = Runtime.getRuntime().exec("logcat -b events");
br = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
// Lee mientras no haya líneas nulas o el proceso se interrumpa
while(((line=br.readLine()) != null) && !this.isInterrupted()){
Log.d("MyApp",line);
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
在 Android 2.3 中一切正常，但在 Android 4 中有一个问题：当我离开应用程序时， “br.readLine()”没有返回任何行，它只是暂停了。当我再次打开应用程序时，服务返回 logcat 行。
我不明白发生了什么，因为在 Android 2.3 中一切正常。
谢谢