我想每隔5秒刷新一次网格视图。当我第一次启动我的应用程序然后spinnerBus.setOnItemSelectedListener正在调用时，一切都很好，我的gridview也每5秒刷新一次，但是当我从spinnerBus中选择另一个项目时，我的网格视图开始闪烁。我想刷新网格视图而不闪烁。
spinnerBus.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
try {
busid = spinnerBus.getSelectedItem().toString();
apiDrawRoute(shift_id, busid);
final Handler handler1 = new Handler();
Runnable refresh = new Runnable() {
@Override
public void run() {
apiRoutes(shift_id, stop_id, busid);
handler1.postDelayed(this, 5000);
}
};
handler1.postDelayed(refresh, 5000);
} catch (Exception e) {
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
public void apiRoutes(String shift_id, String stop_id, String busid) {
String tag_json_obj = "json_obj_req";
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Request.Method.GET,
url, null,
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Log.d("route : ", response.toString());
try {
JSONObject mainObj = new JSONObject(String.valueOf(response));
if (mainObj != null) {
routeList.clear();
JSONArray list = mainObj.getJSONArray("Message");
if (list != null) {
for (int i = 0; i < list.length(); i++) {
JSONObject elem = list.getJSONObject(i);
/*if(elem != null){
JSONObject prods = elem.getJSONObject("running_status_model");*/
RoutesModel routes = new RoutesModel();
routes.setSrNo(elem.getString("rn"));
routes.setName(elem.getString("location"));
routes.setTime(elem.getString("stop_id"));
routes.setStatus(elem.getString("route_id"));
routes.setTxtEsTime(elem.getString("bus_id"));
routes.setReamarks(elem.getString("device_id"));
routeList.add(routes);
//}
}
}
}
adapter = new CustomListAdapter(getActivity(), routeList);
adapter.notifyDataSetChanged();
gridView.setAdapter(adapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
//VolleyLog.d("route : ", "Error: " + error.getMessage());
//Toast.makeText(getActivity(), "Sorry something went wrong.. try again", Toast.LENGTH_SHORT).show();
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(jsonObjReq, tag_json_obj);
}