通过PHP在Android中注册API连接时出错

Question

我尝试通过PHP API连接登录和注册表单，但我收到错误，我不明白它将如何解决。我检查有关此错误的解决方案，但我不明白。先感谢您！

错误： -

W/System.err: org.json.JSONException: Value null of type org.json.JSONObject$1 cannot be converted to JSONObject

这是我的注册表格代码（Login.java）

登录。 java（这是注册的java文件）

public class Login extends Activity {
    EditText editname, editemail, editpassword, editmobile;
    Button btnRegister;
    private static final String TAG = "Login";
    private static final String URL_FOR_REGISTRATION = "http://codexpertise.com/codexpertise.com/apitest/signup.php";
    ProgressDialog progressDialog;
    ImageButton btnfb;

    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_registration);
        // Progress dialog
        progressDialog = new ProgressDialog(this);
        progressDialog.setCancelable(false);

        editname = (EditText) findViewById(R.id.editname);
        editemail = (EditText) findViewById(R.id.editemail);
        editpassword = (EditText) findViewById(R.id.editpassword);
        editmobile = (EditText) findViewById(R.id.editmobile);
        btnRegister = (Button) findViewById(R.id.btnRegister);
        btnfb = (ImageButton)findViewById(R.id.btnfb);




        btnRegister.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                submitForm();
            }

            private void submitForm() {
                registerUser(editname.getText().toString(),
                        editemail.getText().toString(),
                        editpassword.getText().toString(),
                        editmobile.getText().toString());

            }

            private void registerUser(final String name,  final String email, final String password,
                                      final String mobile) {
                // Tag used to cancel the request
                String cancel_req_tag = "register";

                progressDialog.setMessage("Adding you ...");
                showDialog();

                StringRequest strReq = new StringRequest(Request.Method.POST,
                        URL_FOR_REGISTRATION, new Response.Listener<String>() {

                    @Override
                    public void onResponse(String response) {
                        Log.d(TAG, "Register Response: " + response.toString());
                        hideDialog();

                        try {
                            JSONObject jObj = new JSONObject(response);
                            boolean error = jObj.getBoolean("error");

                            if (!error) {
                                String user = jObj.getJSONObject("user").getString("name");
                                Toast.makeText(getApplicationContext(), "Hi " + user +", You are successfully Added!", Toast.LENGTH_SHORT).show();

                                // Launch login activity
                                Intent intent = new Intent(
                                        Login.this,
                                        MainActivity.class);
                                startActivity(intent);
                                finish();
                            } else {

                                String errorMsg = jObj.getString("error_msg");
                                Toast.makeText(getApplicationContext(),
                                        errorMsg, Toast.LENGTH_LONG).show();
                            }
                        } catch (JSONException e) {
                            e.printStackTrace();
                        }

                    }
                }, new Response.ErrorListener() {

                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Log.e(TAG, "Registration Error: " + error.getMessage());
                        Toast.makeText(getApplicationContext(),
                                error.getMessage(), Toast.LENGTH_LONG).show();
                        hideDialog();
                    }
                }) {
                    @Override
                    protected Map<String, String> getParams() {
                        // Posting params to register url
                        Map<String, String> params = new HashMap<String, String>();
                        params.put("name", name);
                        params.put("email", email);
                        params.put("password", password);
                        params.put("gender", mobile);
                        return params;
                    }
                };
                // Adding request to request queue
                AppSingleton.getInstance(getApplicationContext()).addToRequestQueue(strReq, cancel_req_tag);
            }

            private void showDialog() {
                if (!progressDialog.isShowing())
                    progressDialog.show();
            }

            private void hideDialog() {
                if (progressDialog.isShowing())
                    progressDialog.dismiss();
            }

        });

        btnfb.setOnClickListener(new View.OnClickListener() {
            @Override
              public void onClick(View view) {
                    Uri uri = Uri.parse("https://www.facebook.com/"); // missing 'http://' will cause crashed
                    Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                    startActivity(intent);
            }
        });


    }

}

这是我在邮递员上测试它的一些图像

[1

检查一下

[2

Answer 1

试试这个

您的回复不是任何boolean error = jObj.getBoolean("error");所以您可以阅读您的回复代码并根据您的要求更改您的条件。

 try 
    {
        JSONObject jObj = new JSONObject(response);
        String  respCode = jObj.getString("resp_code");
        //boolean error = jObj.getBoolean("error");

        if (respCode.equals("200")) {
            String user = jObj.getJSONObject("user").getString("name");
            Toast.makeText(getApplicationContext(), "Hi " + user +", You are successfully Added!", Toast.LENGTH_SHORT).show();

            // Launch login activity
            Intent intent = new Intent(
                    Login.this,
                    MainActivity.class);
            startActivity(intent);
            finish();
        } else {

            String errorMsg = jObj.getString("error_msg");
            Toast.makeText(getApplicationContext(),
                    errorMsg, Toast.LENGTH_LONG).show();
        }
    } catch (JSONException e) {
        e.printStackTrace();
    }