我想在我的应用程序中每 2 秒显示一条 toast 消息，该消息处于 fragment 而非 Activity 状态。
但在我的代码中，它只在我在下面分享我的代码时显示。
请指导我。提前谢谢你。
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragment_layout_one, container, false);
MapsInitializer.initialize(getActivity());
mMapView = (MapView)rootView.findViewById(R.id.mapView);
mMapView.onCreate(mBundle);
MapsInitializer.initialize(getActivity());
if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder()
.permitAll().build();
StrictMode.setThreadPolicy(policy);
}
/* new DownloadJSON().execute();
setUpMapIfNeeded(rootView); */
handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
new DownloadJSON().execute();
setUpMapIfNeeded(rootView);
Toast.makeText(getActivity(), "Data Updated!!!! ", Toast.LENGTH_SHORT).show();
Log.e("Data in Log", "");
}
}, 1000);
new DownloadJSON().execute();
setUpMapIfNeeded(rootView);
/*LocationManager locman = (LocationManager)getActivity().getSystemService(Context.LOCATION_SERVICE);
//locman.requestLocationUpdates(minTime, minDistance, criteria, intent);
locman.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 10, this);*/
return rootView;
}
最佳答案
它对我有用，你可以编写这些代码...
final Handler handler = new Handler();
timer = new Timer();
TimerTask doAsynchronousTask = new TimerTask() {
@Override
public void run() {
handler.post(new Runnable() {
public void run() {
Log.e("run", "run");
}
});
}
};
timer.schedule(doAsynchronousTask, 60000, 60000);
这些代码每 1 分钟运行一次..
关于android - Toast 消息未在 x 秒的 fragment 中显示？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31610650/