Question

首先，我是android编程的新手。我试图通过youtube观看视频，使用volley库将数据发送到PHP服务器。但每当我点击注册按钮时，都会收到错误＆＃34; com.android.volley.timeouterror＆＃34;。请帮我。这是我的代码......

    StringRequest stringRequest= new StringRequest(Request.Method.POST, ip, new Response.Listener<String>() {
                                    @Override
                                    public void onResponse(String response) {
                                        try {
                                            JSONArray jsonArray=new JSONArray(response);
                                            JSONObject jsonObject=jsonArray.getJSONObject(0);
                                            String code=jsonObject.getString("code");// used in php file
                                            String message=jsonObject.getString("message");
                                            builder.setTitle("Server Response");
                                            builder.setMessage(message);   //message from server
                                            displayAlert(code);
                                        } catch (JSONException e) {
                                            e.printStackTrace();
                                        }}
                                }, new Response.ErrorListener() {
                                    @Override
                                    public void onErrorResponse(VolleyError error) {
                                        Toast.makeText(first.this, "Call admin error in query"+error, Toast.LENGTH_SHORT).show();
                                    }
                                })//passing data to string request getparams method
                                 {
                                      @Override
                                     protected Map<String, String> getParams() throws AuthFailureError {
                                         HashMap<String, String> params= new HashMap<>();
                                         params.put("name",name);
                                         params.put("email",email);
                                         params.put("password",password);
                                         return params;
                                     }};
                                //string request to requestqueue
                                MySingleton.getInstance(first.this).addToRequestqueue(stringRequest);

                            } else {
                                builder.setTitle("Something went wrong!");
                                builder.setMessage("password doesn't match");
                                displayAlert("input_error");
                            }
                        }
            }

    });

}
public void displayAlert(final String code){
    builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            if (code.equals("input_error")){
                jet3.setText("");
                jet4.setText("");
            }
            else {
                if(code.equals("Reg_Success")){
                    finish();
                }
                else if(code.equals("Process_Failed")){
                    jet1.setText("");
                    jet2.setText("");
                    jet3.setText("");
                    jet4.setText("");
                }
            }
        }
    });
    AlertDialog alertDialog= builder.create();
    alertDialog.show();
}

并提交mysingleton.java文件

public class MySingleton {
private static MySingleton mInstance;
 private RequestQueue requestQueue;
 private static Context mCtx;
 //create a constructor
 private MySingleton(Context context){
     mCtx=context; //initialize context
     requestQueue=getRequestQueue(); //initialize request queue
 }
 public RequestQueue getRequestQueue(){
     if(requestQueue==null){
         requestQueue= Volley.newRequestQueue(mCtx.getApplicationContext());
     }
     return requestQueue;
}
//return instance of class
public static synchronized MySingleton getInstance(Context context){
     //initialize mInstance if it is null
     if (mInstance==null){
         mInstance=new MySingleton(context);
     }
     return mInstance;
}
//adding request to requestqueue
public <T>void addToRequestqueue(Request<T> request){
    requestQueue.add(request);
}

}

Answer 1

使用以下代码 ` //你的超时时间延长了它

 private static final int MY_SOCKET_TIMEOUT_MS = 10000;

 MySingleton.getRequestQueue().setRetryPolicy(new DefaultRetryPolicy(
    MY_SOCKET_TIMEOUT_MS, 
    DefaultRetryPolicy.DEFAULT_MAX_RETRIES, 
    DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));

尝试将数据发送到php数据库时的凌空超时错误

1 个答案: