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php - android中的LoginActivity没有得到php json

In lại 作者：太空狗 更新时间：2023-10-29 13:49:47 26 4
mua khóa gpt4 giày nike

我正在制作一个应用程序，我的注册工作正常，只是我的登录不起作用 我的 php 脚本仅在登录时工作正常，它说 json 不匹配这是我的登录 Activity

只是在登录时出现错误，除此之外一切正常我检查了 php json 响应，它和我在 android 中给出的一样，但仍然无法正常工作，我不知道我哪里出错了

示例 json 响应

[{"code":"login_success","username":"smith","password":"55fd64d3d40f601a78f7917de5a10e6044a5e74d"}]

错误响应

[{"code":"login_failed","message":"User not found... Please try again"}]

请找到我的登录页面:

public void login(View view) {


mProgress.show();
    username = editusername.getEditText().getText().toString();
    password = editpasword.getEditText().getText().toString();
    Prefs prefs = new Prefs(LoginActivity.this);
    prefs.setName(username);

                if(username.equals("") || password.equals("")){
                    displayAlert("Enter a valid username and password");
                }
                else{
                   StringRequest stringRequest = new StringRequest(Request.Method.POST, url,
                           new Response.Listener() {
                               @Ghi đè
                               public void onResponse(String response) {
                                   thử {
                                       JSONArray jsonArray = new JSONArray(response); //on this line it is giving error
                                       JSONObject jsonObject = jsonArray.getJSONObject(0);
                                       String code = jsonObject.getString("code");
                                       if(code.equals("login_failed")){
                                          builder.setTitle("Login Error..");
                                          displayAlert(jsonObject.getString("message"));
                                       }
                                       khác {
                                           Intent intent = new Intent(LoginActivity.this,Work.class);
                                           startActivity(intent);
                                       }

                                   } catch (JSONException e) {
                                       e.printStackTrace();
                                   }
                               }
                           }, new Response.ErrorListener() {
                       @Ghi đè
                       public void onErrorResponse(VolleyError error) {
                            displayAlert("Internet Connection problem");
                       }
                   }){
                       @Ghi đè
                       protected Map getParams() throws AuthFailureError {
                           Map params = new HashMap();
                           params.put("username",username);
                           params.put("password",password);
                           return params;
                       }
                   };
                   Singleton.getInstance(LoginActivity.this).addToREquestQueue(stringRequest);
                }
            }
            public void displayAlert(String message){
                builder.setMessage(message);
                builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                    @Ghi đè
                    public void onClick(DialogInterface dialog, int which) {
                        editpasword.getEditText().setText("");
                        editusername.getEditText().setText("");
                    }
                });
                AlertDialog alertDialog = builder.create();
                alertDialog.show();
            }

SharedPreference.java

public class Prefs {
    Context context;
    chuỗi tên riêng tư;

    SharedPreferences sharedPreferences;
    public void removeUser(){
        sharedPreferences.edit().clear().commit();
    }

    công khai String getName() {
        name = sharedPreferences.getString("userdata","");
        trả về tên;
    }

    public void setName(String name) {
        this.name = tên;
        sharedPreferences.edit().putString("userdata",name).commit();
    }

    public Prefs(Context context){
        this.context = ngữ cảnh;
        sharedPreferences = context.getSharedPreferences("userinfo",Context.MODE_PRIVATE);
    }
}

请查看我的 Logcat 详细信息:-

at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99) 04-03 11:12:47.588 14388-14388/kashyapinfotech.com.officework W/System.err: at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5312) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:696) 04-03 11:12:48.097 14388-14388/kashyapinfotech.com.officework W/System.err: org.json.JSONException: Value (JSONArray.java:96) at org.json.JSONArray.(JSONArray.java:108) at kashyapinfotech.com.officework.LoginActivity$1.onResponse(LoginActivity.java:68) at kashyapinfotech.com.officework.LoginActivity$1.onResponse(LoginActivity.java:64) at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:60) 04-03 11:12:48.098 14388-14388/kashyapinfotech.com.officework W/System.err: at com.android.volley.toolbox.StringRequest.deliverResponse(StringRequest.java:30) at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5312) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901)

我检查了 php 它工作正常所以这是 php 脚本

            include("conn.php");
            if(isset($_POST['btn_login'])){
            $username = $_POST['username'];
            $password = $_POST['password'];
            $password = sha1($password);
            $sql = "SELECT * FROM users WHERE username='$username' AND password='$password'";
            $result = mysqli_query($conn,$sql);
            $response = array();
            if(mysqli_num_rows($result)>0){
                $row = mysqli_fetch_row($result);
                $username = $row[1];
                $password = $row[3];
                $code = "login_success";
                array_push($response,array("code"=>$code,"username"=>$username,"password"=>$password));
                echo json_encode($response);
            }
            else{
                $code = "login_failed";
                $message = "User not found... Please try again";
                array_push($response, array("code"=>$code,"message"=>$message));
                echo json_encode($response);
            }
            mysqli_close($conn);

            }
            ?>
        
        
        <đầu>

câu trả lời hay nhất

您正在检查您的 php 代码 中的 key btn_login，您不是从您的 android 端 发布的，例如它应该是

 params.put("username",username);
 params.put("password",password);
 params.put("btn_login","some data");

或者如果您不需要btn_login，请将其从 php 代码中删除

关于php - android中的LoginActivity没有得到php json，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/49623162/

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