做这个 ：
步骤-1在您的gradle中导入排球库：
实现’com.android.volley：volley：1.1.0’
然后在Java中编写以下代码：
ProgressDialog progressDialog; // define globally public void getLocations(){ //call this method onCreate or on onClickEvent progressDialog = new ProgressDialog(getActivity()); progressDialog.setMessage("Feteching...."); progressDialog.setCancelable(false); progressDialog.show(); RequestQueue queue = Volley.newRequestQueue(getApplicationContext()); StringRequest request = new StringRequest(Request.Method.GET, "YOUR URL", new Response.Listener<String>() { //you can change here POST/GET @Override public void onResponse(String response) { progressDialog.dismiss(); System.out.println("Response : " + response); try { JSonObject jsonResponse = new JSonObject(response); JSonArray locations = jsonResponse.getJSonArray("LOCATIONS"); for (int i = 0; i < locations.length(); i++) { JSonObject jsonObject = locations.getJSonObject(i); String name = jSONObject.getString("name"); String lat = jSONObject.getString("lat"); String lng = jSONObject.getString("lng"); System.out.println("LOCATIONS : " + name +"," + lat + "," + lng); // check this print in logcats } } catch (Exception e) { e.printStackTrace(); } } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { System.out.println("VolloError " + error); progressDialog.dismiss(); Toast.makeText(YourActivity.this, "Network Connection Error...!!!", Toast.LENGTH_SHORT).show(); } }) { @Override protected Map<String, String> getParams() { Map<String, String> params = new HashMap<String, String>(); // use params when you are using POST method return params; } }; request.setRetryPolicy(new RetryPolicy() { @Override public int getCurrentTimeout() { return 50000; } @Override public int getCurrentRetryCount() { return 50000; } @Override public void retry(VolleyError error) throws VolleyError { } }); queue.add(request);}
