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ログイン後、メインアクティビティのユーザ名とパスワードが表示されない理由をわかりません..... logoutボタンのみを参照してください...なぜですか？ログイン後にメインアクティビティに名前とパスワードが表示されない
私があなたを助けてくれることを願っています！
ログインアクティビティ：
public class LoginActivity extends Activity {
private static final String TAG = RegisterActivity.class.getSimpleName();
private Button btnLogin;
private Button btnLinkToRegister;
private EditText inputNumeroTelefonico;
private EditText inputPassword;
private ProgressDialog pDialog;
private SessionManager session;
private SQLiteHandler db;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
inputNumeroTelefonico = (EditText) findViewById(R.id.numero_telefonico);
inputPassword = (EditText) findViewById(R.id.password);
btnLogin = (Button) findViewById(R.id.btnLogin);
btnLinkToRegister = (Button) findViewById(R.id.btnLinkToRegisterScreen);
// Progress dialog
pDialog = new ProgressDialog(this);
pDialog.setCancelable(false);
// SQLite database handler
db = new SQLiteHandler(getApplicationContext());
// Session manager
session = new SessionManager(getApplicationContext());
// Check if user is already logged in or not
if (session.isLoggedIn()) {
// User is already logged in. Take him to main activity
Intent intent = new Intent(LoginActivity.this, MainActivity.class);
startActivity(intent);
finish();
}
// Login button Click Event
btnLogin.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
String numero_telefonico = inputNumeroTelefonico.getText().toString().trim();
String password = inputPassword.getText().toString().trim();
// Check for empty data in the form
if (!numero_telefonico.isEmpty() && !password.isEmpty()) {
// login user
checkLogin(numero_telefonico, password);
} else {
// Prompt user to enter credentials
Toast.makeText(getApplicationContext(),
"Please enter the credentials!", Toast.LENGTH_LONG)
.show();
}
}
});
// Link to Register Screen
btnLinkToRegister.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Intent i = new Intent(getApplicationContext(),
RegisterActivity.class);
startActivity(i);
finish();
}
});
}
/**
* function to verify login details in mysql db
* */
private void checkLogin(final String numero_telefonico, final String password) {
// Tag used to cancel the request
String tag_string_req = "req_login";
pDialog.setMessage("Logging in ...");
showDialog();
StringRequest strReq = new StringRequest(Method.POST,
AppConfig.URL_LOGIN, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
Log.d(TAG, "Login Response: " + response.toString());
hideDialog();
try {
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
// Check for error node in json
if (!error) {
// user successfully logged in
// Create login session
session.setLogin(true);
// Now store the user in SQLite
String uid = jObj.getString("uid");
JSONObject user = jObj.getJSONObject("user");
String name = user.getString("name");
String cognome = user.getString("cognome");
String numero_telefonico = user.getString("numero_telefonico");
String created_at = user
.getString("created_at");
// Inserting row in users table
db.addUser(name,cognome, numero_telefonico, uid, created_at);
// Launch main activity
Intent intent = new Intent(LoginActivity.this,
MainActivity.class);
startActivity(intent);
finish();
} else {
// Error in login. Get the error message
String errorMsg = jObj.getString("error_msg");
Toast.makeText(getApplicationContext(),
errorMsg, Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
// JSON error
e.printStackTrace();
Toast.makeText(getApplicationContext(), "Json error: " + e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Login Error: " + error.getMessage());
Toast.makeText(getApplicationContext(),
error.getMessage(), Toast.LENGTH_LONG).show();
hideDialog();
}
}) {
@Override
protected Map<String, String> getParams() {
// Posting parameters to login url
Map<String, String> params = new HashMap<String, String>();
params.put("numero_telefonico", numero_telefonico);
params.put("password", password);
return params;
}
};
// Adding request to request queue
AppController.getInstance().addToRequestQueue(strReq, tag_string_req);
}
private void showDialog() {
if (!pDialog.isShowing())
pDialog.show();
}
private void hideDialog() {
if (pDialog.isShowing())
pDialog.dismiss();
}
}
主な活動：
public class MainActivity extends Activity {
private TextView txtName;
private TextView txtNumeroTelefonico;
private Button btnLogout;
private SQLiteHandler db;
private SessionManager session;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txtName = (TextView) findViewById(R.id.name);
txtNumeroTelefonico = (TextView) findViewById(R.id.numero_telefonico);
btnLogout = (Button) findViewById(R.id.btnLogout);
// SqLite database handler
db = new SQLiteHandler(getApplicationContext());
// session manager
session = new SessionManager(getApplicationContext());
if (!session.isLoggedIn()) {
logoutUser();
}
// Fetching user details from SQLite
HashMap<String, String> user = db.getUserDetails();
String name = user.get("name");
String numero_telefonico = user.get("numero_telefonico");
// Displaying the user details on the screen
System.out.println(name+""+numero_telefonico);
txtName.setText(name);
txtNumeroTelefonico.setText(numero_telefonico);
// Logout button click event
btnLogout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
logoutUser();
}
});
}
/**
* Logging out the user. Will set isLoggedIn flag to false in shared
* preferences Clears the user data from sqlite users table
* */
private void logoutUser() {
session.setLogin(false);
db.deleteUsers();
// Launching the login activity
Intent intent = new Intent(MainActivity.this, LoginActivity.class);
startActivity(intent);
finish();
}
}
LOGINのACTIVITY.XML：
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/white"
android:gravity="center"
android:orientation="vertical"
android:padding="10dp"
android:fitsSystemWindows="true">
<LinearLayout
android:layout_gravity="center_vertical"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="100dp"
android:paddingTop="56dp"
android:paddingLeft="24dp"
android:paddingRight="24dp" >
<ImageView
android:background="@drawable/signor_pomidor"
android:layout_gravity="center_horizontal"
android:layout_width="150dp"
android:layout_height="150dp" />
<EditText
android:id="@+id/numero_telefonico"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:background="@color/btn_login_bg"
android:hint="@string/hint_numero_telefonico"
android:inputType="textEmailAddress"
android:padding="10dp"
android:singleLine="true"
android:textColor="@color/input_login"
android:textColorHint="@color/input_login_hint" />
<EditText
android:id="@+id/password"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="10dp"
android:background="@color/btn_login_bg"
android:hint="@string/hint_password"
android:inputType="textPassword"
android:padding="10dp"
android:singleLine="true"
android:textColor="@color/input_login"
android:textColorHint="@color/input_login_hint" />
<!-- Login Button -->
<Button
android:id="@+id/btnLogin"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dip"
android:background="@color/btn_login_bg"
android:text="@string/btn_login"
android:textColor="@color/btn_logut_bg" />
<!-- Link to Login Screen -->
<Button
android:id="@+id/btnLinkToRegisterScreen"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dp"
android:background="@null"
android:text="@string/btn_link_to_register"
android:textAllCaps="false"
android:textColor="@color/btn_logut_bg"
android:textSize="15dp" />
</LinearLayout>
</ScrollView>
MAIN ACTIVITY.XML：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="${relativePackage}.${activityClass}" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:gravity="center"
android:orientation="vertical" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/welcome"
android:textSize="20dp" />
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:textColor="@color/lbl_name"
android:textSize="24dp" />
<TextView
android:id="@+id/numero_telefonico"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="13dp" />
<Button
android:id="@+id/btnLogout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="40dip"
android:background="@color/btn_logut_bg"
android:text="@string/btn_logout"
android:textAllCaps="false"
android:textColor="@color/white"
android:textSize="15dp" />
</LinearLayout>
</RelativeLayout>
GET USER DETAIL:
（ISSET（$ _ POST [ 'numero_telefonico']）& & ISSET（$ _ POST [ 'パスワード']））{あなたのMAIN ACTIVITY.XML で
// receiving the post params
$numero_telefonico = $_POST['numero_telefonico'];
$password = $_POST['password'];
// get the user by email and password
$user = $db->getUserByEmailAndPassword($numero_telefonico, $password);
if ($user != false) {
// use is found
$response["error"] = FALSE;
$response["uid"] = $user["unique_id"];
$response["user"]["name"] = $user["name"];
$response["user"]["cognome"] = $user["cognome"];
$response["user"]["numero_telefonico"] = $user["numero_telefonico"];
$response["user"]["created_at"] = $user["created_at"];
$response["user"]["updated_at"] = $user["updated_at"];
echo json_encode($response);
}
public function getUserByEmailAndPassword($numero_telefonico, $password) {
$stmt = $this->conn->prepare("SELECT * FROM users WHERE numero_telefonico = ?");
$stmt->bind_param("s", $numero_telefonico);
if ($stmt->execute()) {
$user = $stmt->get_result()->fetch_assoc();
$stmt->close();
// verifying user password
$salt = $user['salt'];
$encrypted_password = $user['encrypted_password'];
//$hash = $this->checkhashSSHA($salt, $password);
$hash = $password;
// check for password equality
if ($encrypted_password == $hash) {
// user authentication details are correct
return $user;
}
} else {
return NULL;
}
}
**重要**コードのみを添付してください。すべてではありません。また、あなたのエラーについてもっと詳しく説明してください。正確に何が起こっていますか？デバッグモードで実行し、ブレークポイントを設定してデータが失われる場所を確認してください。 – Vucko
getUserDetails（）メソッドを投稿できます – Punithapriya
どのように特定のユーザーの詳細を取得していますか？ – Sanoop