在地图长按上多次禁用重新打开活动

Question

我正在制作一个应用程序，使用户能够长按地图，并打开一个新活动，允许他们添加新标签和有关它的信息。当用户长按一次时，如果他的速度足够快，他可以长按两次地图，第二个活动会打开两次。我正在尝试找到一种方法来禁用此行为。我已经尝试了一些示例，并尝试添加标志，但没有效果。

我想禁止用户长按两次。我还想添加一个加载器。

简而言之，我要做的是：如果用户已经长按打开新活动，则禁用长按，并在新活动关闭时再次启用。

我的地图片段如下所示：

 //Add marker on long click
 mMap.setOnMapLongClickListener(new GoogleMap.OnMapLongClickListener() {

     @Override
     public void onMapLongClick(final LatLng arg0) {

         RequestQueue queue = Volley.newRequestQueue(getActivity());
                    String url = "https://maps.googleapis.com/maps/api/geocode/json?latlng=" + String.valueOf(arg0.latitude) + "," + String.valueOf(arg0.longitude) + "&key=myKey";

         // Request a string response from the provided URL.
         StringRequest stringRequest = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
             @Override
             public void onResponse(String response) {
                 try {
                     JSONArray jObj = new JSONObject(response).getJSONArray("results").getJSONObject(0).getJSONArray("address_components");

                     Intent intent = new Intent(getActivity(), AddRestaurantActivity.class);

                      for (int i = 0; i < jObj.length(); i++) {
                          String componentName = new JSONObject(jObj.getString(i)).getJSONArray("types").getString(0);
                          if (componentName.equals("postal_code") || componentName.equals("locality") || componentName.equals("street_number") || componentName.equals("route")
                                                    || componentName.equals("neighborhood") || componentName.equals("sublocality") || componentName.equals("administrative_area_level_2")
                                                    || componentName.equals("administrative_area_level_1") || componentName.equals("country")) {
                                                intent.putExtra(componentName, new JSONObject(jObj.getString(i)).getString("short_name"));
                           }
                      }

                       intent.putExtra("latitude", arg0.latitude);
                       intent.putExtra("longitude", arg0.longitude);

                       startActivity(intent);

                   } catch (JSONException e) {
              e.printStackTrace();
              }
          }
    }, new Response.ErrorListener() {

    @Override
    public void onErrorResponse(VolleyError error) {
        int x = 1;
    }
 });
 // Add the request to the RequestQueue.
 queue.add(stringRequest);

    }
});

这是它打开的活动，this 和 this 的答案尝试（以及其他）添加一个标志：

private void setRestaurant(final String userId, final String message, final String pickDate, final String pickTime, final String location, final String lat, final String lon, final String sendTo, final boolean enableComments) {
    // Tag used to cancel the request
    String tag_string_req = "req_add_restaurant";

    final String commentsEnabled = (enableComments) ? "0" : "1";

    pDialog.setMessage(getString(R.string.setting_a_restaurant));
    showDialog();

    ApiInterface apiService =
            ApiClient.getClient().create(ApiInterface.class);

    Call<DefaultResponse> call = apiService.addrestaurant(userId, message, lat, lon, pickDate, pickTime, sendTo, commentsEnabled);
    call.enqueue(new Callback<DefaultResponse>() {
        @Override
        public void onResponse(Call<DefaultResponse> call, retrofit2.Response<DefaultResponse> response) {

            // Launch main activity
            Intent intent = new Intent(SetRestaurantActivity.this,
                    MainActivity.class);
            // I TRIED TO BLOCK IT HERE
            intent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
            // I ALSO TRIED: 
            // intent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
            startActivity(intent);
            finish();

            Toast.makeText(getApplicationContext(), R.string.sucessfully_created_restaurant, Toast.LENGTH_LONG).show();
        }
    });
}

Answer 1

简单的添加标志变量。在这种情况下，我为此使用 isRequestProcess 变量。

Boolean isRequestProcess = false;
mMap.setOnMapLongClickListener(new GoogleMap.OnMapLongClickListener() {

 @Override
 public void onMapLongClick(final LatLng arg0) {
     if(isRequestProcess){
         return;
     }
    isRequestProcess = true;
     RequestQueue queue = Volley.newRequestQueue(getActivity());
                String url = "https://maps.googleapis.com/maps/api/geocode/json?latlng=" + String.valueOf(arg0.latitude) + "," + String.valueOf(arg0.longitude) + "&key=myKey";

     // Request a string response from the provided URL.
     StringRequest stringRequest = new StringRequest(Request.Method.GET, url, new Response.Listener<String>() {
         @Override
         public void onResponse(String response) {
             try {
                 JSONArray jObj = new JSONObject(response).getJSONArray("results").getJSONObject(0).getJSONArray("address_components");

                 Intent intent = new Intent(getActivity(), AddRestaurantActivity.class);

                  for (int i = 0; i < jObj.length(); i++) {
                      String componentName = new JSONObject(jObj.getString(i)).getJSONArray("types").getString(0);
                      if (componentName.equals("postal_code") || componentName.equals("locality") || componentName.equals("street_number") || componentName.equals("route")
                                                || componentName.equals("neighborhood") || componentName.equals("sublocality") || componentName.equals("administrative_area_level_2")
                                                || componentName.equals("administrative_area_level_1") || componentName.equals("country")) {
                                            intent.putExtra(componentName, new JSONObject(jObj.getString(i)).getString("short_name"));
                       }
                  }

                   intent.putExtra("latitude", arg0.latitude);
                   intent.putExtra("longitude", arg0.longitude);

                   startActivity(intent);
                   isRequestProcess = false;

               } catch (JSONException e) {
                  e.printStackTrace();
              }
        }, new Response.ErrorListener() {

            @Override
            public void onErrorResponse(VolleyError error) {
                int x = 1;
            }

        }
    }
}