1
我遇到了问题Volley
和RecyclerView
。RecyclerView用Volley请求填充它不显示结果
在onCreate方法我的Activity
,我打电话Volley Request
从我的服务器获取数据。然后我将它作为List
传递给我的适配器。
事情是,当onCreate
方法完成时,所有事情都发生得很快我的Volley Request
尚未完成,因此屏幕上没有显示任何内容,我该如何避免这种情况?
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity__services__worker);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setTitle("Servicios");
final List services = new ArrayList();
RequestQueue requestQueue = Volley.newRequestQueue(this);
StringRequest stringRequest = new StringRequest(Method.GET, AppConfig.URL_GET_SERVICES_REQUIRED, new Response.Listener<String>(){
@Override
public void onResponse(String response){
try{
JSONArray jsonArray = new JSONArray(response);
for(int i=0; i<jsonArray.length(); i++){
JSONObject jsonObject = jsonArray.getJSONObject(i);
String tag_servicio = jsonObject.getString("contratista");
String servicio = jsonObject.getString("descipcion_del_problema");
String zona = jsonObject.getString("zona");
String money = jsonObject.getString("precio_min");
//Toast.makeText(Activity_Services_Worker.this, tag_servicio+servicio+zona+money, Toast.LENGTH_SHORT).show();
services.add(new Servicios_worker(tag_servicio, servicio, zona, money));
}
}catch (JSONException e){
e.printStackTrace();
}
}
}, new Response.ErrorListener(){
@Override
public void onErrorResponse (VolleyError error){
Log.e(TAG, "Registration Error: " + error.getMessage());
Toast.makeText(Activity_Services_Worker.this, error.getMessage(), Toast.LENGTH_LONG).show();
}
});
requestQueue.add(stringRequest);
recycler = (RecyclerView) findViewById(R.id.servicesAsked_RecyclerView);
recycler.setHasFixedSize(true);
lManager = new LinearLayoutManager(this);
recycler.setLayoutManager(lManager);
adapter = new Adapter_services_required(services);
recycler.setAdapter(adapter);
}
辉煌!谢谢。 – JosCarrillo