Java Android studio注册不起作用

我正在用android studio为android创建一个社交网络。当我在所有字段中输入文本并单击“注册”时，什么也没有发生。我之前检查过安卓显示器，它显示我没有使用互联网许可。所以我把这个加进去了。现在我没有收到任何错误，当我单击Register时仍然没有发生任何事情。当我单击Register时，如果注册成功，用户的信息将进入数据库，然后进入登录屏幕。有人能帮我解决这个问题吗

Android清单：

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

---

请帮助，谢谢。

我的应用程序上有一个注册活动，它使用了一对与您类似的java文件（registerActivity和registerRequest），但对于我的php文件，我使用了一些更简单的东西。我会把它贴在下面，如果你想试试，或者修改你自己的代码来适应它，但是我使用000WebHostDB时，它100%都能工作

$con = mysqli_connect("host", "username", "password", "db_name");

$name = $_POST["name"];
$email = $_POST["email"];
$password = $_POST["password"];

$response = array();
$response["success"] = 0;  

$email_check = mysqli_query($con, "SELECT * FROM tableName WHERE email = '$email'");
if(mysqli_num_rows($email_check)) {
    $response["success"] = 1;
    echo json_encode($response);
    exit;
}

$statementR = mysqli_prepare($con, "INSERT INTO tableName (name, email, password) VALUES (?, ?, ?)");
mysqli_stmt_bind_param($statementR, "sss", $name, $email, $password);
mysqli_stmt_execute($statementR);


$statement = mysqli_prepare($con, "SELECT * FROM tableName WHERE email = ?");
mysqli_stmt_bind_param($statement, "s", $email);
mysqli_stmt_execute($statement);
mysqli_stmt_store_result($statement);
mysqli_stmt_bind_result($statement, $user_id, $name, $email, $password);

while(mysqli_stmt_fetch($statement)){
    $response["success"] = 2;  
    $response["user_id"] = $user_id;    
    $response["name"] = $name;
    $response["email"] = $email;

}

echo json_encode($response);

email_check方法检查电子邮件是否已经存在，然后返回一个带有整数值的响应，然后应用程序对其进行解释

我的php脚本中没有任何密码/用户名检查，因为这在应用程序端已经完成，因为它可以防止不必要的数据库调用（如果您愿意，我也可以发布该代码）。如果愿意，您可能会将服务器端数据检查添加到上面的代码中

为您修改了register.php文件：

$con = mysqli_connect("host", "username", "password", "db_name");

$name = $_POST["username"];
$email = $_POST["email"];
$pw = $_POST["pw"];

$response = array();
$response["success"] = 0;  

$email_check = mysqli_query($con, "SELECT * FROM users WHERE email = '$email'");
if(mysqli_num_rows($email_check)) {
    $response["success"] = 1;
    echo json_encode($response);
    exit;
}

$statementR = mysqli_prepare($con, "INSERT INTO users (username, pw, email) VALUES (?, ?, ?)");
mysqli_stmt_bind_param($statementR, "sss", $username, $pw, $email);
mysqli_stmt_execute($statementR);


$statement = mysqli_prepare($con, "SELECT * FROM users WHERE email = ?");
mysqli_stmt_bind_param($statement, "s", $email);
mysqli_stmt_execute($statement);
mysqli_stmt_store_result($statement);
mysqli_stmt_bind_result($statement, $username, $pw, $email);

while(mysqli_stmt_fetch($statement)){
    $response["success"] = 2;  
    $response["username"] = $username;    
    $response["pw"] = $pw;
    $response["email"] = $email;

}

echo json_encode($response);

另外，在RegisterActivity中，将行

if（success）{…}

更新为

if（success==2）{…}

为清楚起见，以下是我的RegisterActivity（与您的非常相似）：

公共类注册表活动扩展了AppCompatActivity{
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity\u寄存器）；
最终EditText注册表名=（EditText）findViewById（R.id.registerName）；
final EditText registerEmail=（EditText）findViewById（R.id.registerEmail）；
最终的EditText寄存器Password=（EditText）findViewById（R.id.registerPassword）；
最终EditText注册表确认=（EditText）findViewById（R.id.registerPasswordConfirm）；
最终按钮寄存器按钮=（按钮）findViewById（R.id.registerButton）；
最终TextView registerLogInLink=（TextView）findViewById（R.id.registerLogInLink）；
registerButton.setOnClickListener（新视图.OnClickListener（）{
@凌驾
公共void onClick（视图v）{
最终字符串名称=registerName.getText（）.toString（）；
最终字符串email=registerEmail.getText（）.toString（）；
最终字符串密码=registerPassword.getText（）.toString（）；
final String passwordCheck=RegisterConfig.getText（）.toString（）；
if（name.length（）>1&email.length（）>5&password.length（）>5&password.equals（密码检查））{
Response.Listener responseListener=新的Response.Listener（）{
@凌驾
公共void onResponse（字符串响应）{
试一试{
System.out.println（响应）；
JSONObject jsonResponse=新的JSONObject（响应）；
int success=jsonResponse.getInt（“success”）；
System.out.println（jsonResponse）；
System.out.println（成功）；
如果（成功==2）{
整数user_id=jsonResponse.getInt（“user_id”）；
String name=jsonResponse.getString（“name”）；
String email=jsonResponse.getString（“电子邮件”）；
UserCredentials.setUserLoggedInStatus（getApplicationContext（），true）；
setLoggedInUserEmail（getApplicationContext（），email）；
UserCredentials.setLoggedInUserName（getApplicationContext（），name）；
UserCredentials.setLoggedInUserID（getApplicationContext（），用户id）；
意向意向=新意向（RegisterActivity.this，MainScreen.class）；
RegisterActivity.this.startActivity（意向）；
}else if（成功==1）{
AlertDialog.Builder alertMessage=新建AlertDialog.Builder（RegisterActivity.this）；
alertMessage.setMessage（“注册失败，电子邮件已注册。”）
.setNegativeButton（“重试”，null）
.create（）
.show（）；
}否则{
AlertDialog.Builder alertMessage=新建AlertDialog.Builder（RegisterActivity.this）；
alertMessage.setMessage（“注册失败，请重试”）
.setNegativeButton（“重试”，新建DialogInterface.OnClickListener（））{
public void onClick（DialogInterface对话框，int-id）{
RegisterActivity.this.recreate（）；}）
.create（）.show（）；
}
}捕获（JSONException e）{
e、 printStackTrace（）；
}
}
};
RegisterRequest RegisterRequest=新的RegisterRequest（名称、电子邮件、密码、响应侦听器）；
RequestQueue=Volley.newRequestQueue（RegisterActivity.this）；
添加（registerRequest）；
}else if（name.length（）>1&email.length（）1&email.length（）>5&password.length（）我在我的应用程序上有一个注册活动，它使用与你类似的一对java文件（registerActivity和registerRequest），但对于我的php文件，我使用了一些更简单的东西。我将在下面发布，如果你想试试，或者修改自己的代码以适应它，但它可以100%工作
 if(isset($_POST['bRegister'])) {

        if (empty($_POST["username"])) {
            echo"Fill in username to sign up";
                } else {

                if (empty($_POST["pw"])) {
                 echo"Fill in password to sign up";
                } else {

                if (empty($_POST["pw2"])) {
                echo"Confirm password to sign up";
                 } else {

                if (empty($_POST["email"])) {
                     echo"Fill in email to sign up";
                 } else {

                 if ($_POST['pw'] == $_POST['pw2']) {
                 $username = mysqli_real_escape_string($con, $_POST["username"]);
                 $pw= mysqli_real_escape_string($con, $_POST["pw"]);
                 $email = mysqli_real_escape_string($con, $_POST["email"]);

         $result = mysqli_query($con ,"SELECT * FROM users WHERE username='" . $username . "'");

                    if(mysqli_num_rows($result) > 0)
                    {
                    echo "Username exists";
                    } else {

                       $result2 = mysqli_query($con ,"SELECT * FROM users WHERE email='" . $email. "'");

                       if(mysqli_num_rows($result2) > 0)
                       {
                       echo "Email exist";
                       } else {

                       $pw = password_hash($pw, PASSWORD_BCRYPT, array('cost' => 14));          

               $sql = "INSERT INTO users (username, pw, email) VALUES('" . $username . "', '" . $pw . "', '" . $email . "')";
                       if(mysqli_query($con, $sql)){                                  
                       // if insert checked as successful echo username and password saved successfully
            echo"success";
                       }else{
                       echo mysqli_error($con);
                       }   

                    } } } else{
                              echo "The passwords do not match.";  // and send them back to registration page
            }}}}}
     }

$con = mysqli_connect("host", "username", "password", "db_name");

$name = $_POST["name"];
$email = $_POST["email"];
$password = $_POST["password"];

$response = array();
$response["success"] = 0;  

$email_check = mysqli_query($con, "SELECT * FROM tableName WHERE email = '$email'");
if(mysqli_num_rows($email_check)) {
    $response["success"] = 1;
    echo json_encode($response);
    exit;
}

$statementR = mysqli_prepare($con, "INSERT INTO tableName (name, email, password) VALUES (?, ?, ?)");
mysqli_stmt_bind_param($statementR, "sss", $name, $email, $password);
mysqli_stmt_execute($statementR);


$statement = mysqli_prepare($con, "SELECT * FROM tableName WHERE email = ?");
mysqli_stmt_bind_param($statement, "s", $email);
mysqli_stmt_execute($statement);
mysqli_stmt_store_result($statement);
mysqli_stmt_bind_result($statement, $user_id, $name, $email, $password);

while(mysqli_stmt_fetch($statement)){
    $response["success"] = 2;  
    $response["user_id"] = $user_id;    
    $response["name"] = $name;
    $response["email"] = $email;

}

echo json_encode($response);

$con = mysqli_connect("host", "username", "password", "db_name");

$name = $_POST["username"];
$email = $_POST["email"];
$pw = $_POST["pw"];

$response = array();
$response["success"] = 0;  

$email_check = mysqli_query($con, "SELECT * FROM users WHERE email = '$email'");
if(mysqli_num_rows($email_check)) {
    $response["success"] = 1;
    echo json_encode($response);
    exit;
}

$statementR = mysqli_prepare($con, "INSERT INTO users (username, pw, email) VALUES (?, ?, ?)");
mysqli_stmt_bind_param($statementR, "sss", $username, $pw, $email);
mysqli_stmt_execute($statementR);


$statement = mysqli_prepare($con, "SELECT * FROM users WHERE email = ?");
mysqli_stmt_bind_param($statement, "s", $email);
mysqli_stmt_execute($statement);
mysqli_stmt_store_result($statement);
mysqli_stmt_bind_result($statement, $username, $pw, $email);

while(mysqli_stmt_fetch($statement)){
    $response["success"] = 2;  
    $response["username"] = $username;    
    $response["pw"] = $pw;
    $response["email"] = $email;

}

echo json_encode($response);

public class RegisterActivity extends AppCompatActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_register);

    final EditText registerName = (EditText) findViewById(R.id.registerName);
    final EditText registerEmail = (EditText) findViewById(R.id.registerEmail);
    final EditText registerPassword = (EditText) findViewById(R.id.registerPassword);
    final EditText registerConfirm = (EditText) findViewById(R.id.registerPasswordConfirm);

    final Button registerButton = (Button) findViewById(R.id.registerButton);

    final TextView registerLogInLink = (TextView) findViewById(R.id.registerLogInLink);

    registerButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            final String name = registerName.getText().toString();
            final String email = registerEmail.getText().toString();
            final String password = registerPassword.getText().toString();
            final String passwordCheck = registerConfirm.getText().toString();

            if(name.length() > 1 & email.length() > 5 & password.length() > 5 & password.equals(passwordCheck)) {

            Response.Listener<String> responseListener = new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    try {
                        System.out.println(response);
                        JSONObject jsonResponse = new JSONObject(response);
                        int success = jsonResponse.getInt("success");

                        System.out.println(jsonResponse);
                        System.out.println(success);

                        if (success == 2) {
                            Integer user_id = jsonResponse.getInt("user_id");
                            String name = jsonResponse.getString("name");
                            String email = jsonResponse.getString("email");

                            UserCredentials.setUserLoggedInStatus(getApplicationContext(), true);
                            UserCredentials.setLoggedInUserEmail(getApplicationContext(), email);
                            UserCredentials.setLoggedInUserName(getApplicationContext(), name);
                            UserCredentials.setLoggedInUserID(getApplicationContext(), user_id);

                            Intent intent = new Intent(RegisterActivity.this, MainScreen.class);
                            RegisterActivity.this.startActivity(intent);

                        } else if (success == 1) {
                            AlertDialog.Builder alertMessage = new AlertDialog.Builder(RegisterActivity.this);
                            alertMessage.setMessage("Registration failed, email already registered.")
                                    .setNegativeButton("Try again", null)
                                    .create()
                                    .show();

                        } else {
                            AlertDialog.Builder alertMessage = new AlertDialog.Builder(RegisterActivity.this);
                            alertMessage.setMessage("Registration failed, please try again")
                                    .setNegativeButton("Try again", new DialogInterface.OnClickListener() {
                                        public void onClick(DialogInterface dialog,int id) {
                                            RegisterActivity.this.recreate();}})

                                    .create().show();

                        }

                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            };

                RegisterRequest registerRequest = new RegisterRequest(name, email, password, responseListener);
                RequestQueue queue = Volley.newRequestQueue(RegisterActivity.this);
                queue.add(registerRequest);

            } else if(name.length() > 1 & email.length() <= 5 & password.length() <=5) {
                AlertDialog.Builder alertMessage = new AlertDialog.Builder(RegisterActivity.this);
                alertMessage.setMessage("Registration failed, email and password invalid. Passwords must be more than 5 characters.")
                        .setNegativeButton("Retry", null)
                        .create()
                        .show();

            } else if(name.length() > 1 & email.length() <= 5 & password.length() > 5) {
                AlertDialog.Builder alertMessage = new AlertDialog.Builder(RegisterActivity.this);
                alertMessage.setMessage("Registration failed, email invalid.")
                        .setNegativeButton("Retry", null)
                        .create()
                        .show();

            } else if(name.length() > 1 & email.length() > 5 & password.length() <= 5) {
                AlertDialog.Builder alertMessage = new AlertDialog.Builder(RegisterActivity.this);
                alertMessage.setMessage("Registration failed, invalid password. Passwords must be more than 5 characters.")
                        .setNegativeButton("Retry", null)
                        .create()
                        .show();

            } else if(name.length() <= 1 & email.length() <= 5 & password.length() <=5) {
                AlertDialog.Builder alertMessage = new AlertDialog.Builder(RegisterActivity.this);
                alertMessage.setMessage("Registration failed, all credentials invalid.")
                        .setNegativeButton("Retry", null)
                        .create()
                        .show();

            } else if(name.length() <= 1 & email.length() <= 5 & password.length() > 5) {
                AlertDialog.Builder alertMessage = new AlertDialog.Builder(RegisterActivity.this);
                alertMessage.setMessage("Registration failed, name and email invalid.")
                        .setNegativeButton("Retry", null)
                        .create()
                        .show();

            } else if(name.length() <= 1 & email.length() > 5 & password.length() <= 5) {
                AlertDialog.Builder alertMessage = new AlertDialog.Builder(RegisterActivity.this);
                alertMessage.setMessage("Registration failed, name and password invalid. Passwords must be more than 5 characters.")
                        .setNegativeButton("Retry", null)
                        .create()
                        .show();

            }  else if(name.length() > 1 & email.length() > 5 & password.length() > 5 & !password.equals(passwordCheck)) {
                AlertDialog.Builder alertMessage = new AlertDialog.Builder(RegisterActivity.this);
                alertMessage.setMessage("Registration failed, passwords do not match.")
                        .setNegativeButton("Retry", null)
                        .create()
                        .show();

            } else {
                AlertDialog.Builder alertMessage = new AlertDialog.Builder(RegisterActivity.this);
                alertMessage.setMessage("Something went wrong, please try again.")
                        .setNegativeButton("Retry", null)
                        .create()
                        .show();
            }
        }
    });

    registerLogInLink.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent LogInIntent = new Intent(RegisterActivity.this, LogInActivity.class);
            RegisterActivity.this.startActivity(LogInIntent);

        }
});