请求完成后我必须做一些事情。就像关闭加载对话框
我必须在 onResponse() 和 onErrorResponse() 的每个请求中添加 dialog.dismiss();
。
volley有全局回调吗?我想在同一 fragment/Activity 中进行全局回调来处理错误/成功消息
JsonRequest jsonRequest = new JsonRequest
(url, params, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
dialog.dismiss();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
dialog.dismiss();
}
}) {
};
最佳答案
是的,您可以通过创建自定义 Volley 请求来做到这一点。 请参阅下面的代码:
import java.io.UnsupportedEncodingException;
import java.util.Map;
import org.json.JSONException;
import org.json.JSONObject;
import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.Response.ErrorListener;
import com.android.volley.Response.Listener;
import com.android.volley.toolbox.HttpHeaderParser;
import android.app.AlertDialog;
public class CustomRequest extends Request<JSONObject> {
private Listener<JSONObject> listener;
private Map<String, String> params;
private AlertDialog dialog;
//You can replace AlertDialog by the Type of dialog you use
public CustomRequest(String url, Map<String, String> params,
Listener<JSONObject> reponseListener, ErrorListener errorListener,AlertDialog dialog)
{
super(Method.GET, url, errorListener);
this.listener = reponseListener;
this.params = params;
this.dialog =dialog;
}
public CustomRequest(int method, String url, Map<String, String> params,
Listener<JSONObject> reponseListener, ErrorListener errorListener) {
super(method, url, errorListener);
this.listener = reponseListener;
this.params = params;
}
protected Map<String, String> getParams()
throws com.android.volley.AuthFailureError {
return params;
};
@Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
//Here you can call dialog.dismiss();
dialog.dismiss();
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
return Response.success(new JSONObject(jsonString),
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
@Override
protected void deliverResponse(JSONObject response) {
// TODO Auto-generated method stub
listener.onResponse(response);
}
}
}
请告诉我这是否有效。 :)
关于java - android volley 是否有回调做类似 java 最后的事情?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35737372/