java - Android - 保存登录详细信息

Question

我正在努力开发一种方法，让用户可以选择在登录时保存他们的详细信息，我在互联网上进行了搜索，但没有找到解决方案...任何帮助将不胜感激... 这是我的代码

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

     // create a instance of SQLite Database
     loginDataBaseAdapter=new LoginDataBaseAdapter(this);
     loginDataBaseAdapter=loginDataBaseAdapter.open();

     // Get The Refference Of Buttons
     btnSignIn=(Button)findViewById(R.id.buttonSignIN);
     btnSignUp=(Button)findViewById(R.id.buttonSignUP);

    // Set OnClick Listener on SignUp button 
    btnSignUp.setOnClickListener(new View.OnClickListener() {
    public void onClick(View v) {
        // TODO Auto-generated method stub

        /// Create Intent for SignUpActivity  abd Start The Activity
        Intent intentSignUP=new Intent(getApplicationContext(),SignUPActivity.class);
        startActivity(intentSignUP);
        }
    });
}
// Methos to handleClick Event of Sign In Button
public void signIn(View V)
   {
        final Dialog dialog = new Dialog(LoginActivity.this);
        dialog.setContentView(R.layout.login);
        dialog.setTitle("Login");

        // get the Refferences of views
        final  EditText editTextUserName=(EditText)dialog.findViewById(R.id.editTextUserNameToLogin);
        final  EditText editTextPassword=(EditText)dialog.findViewById(R.id.editTextPasswordToLogin);

        Button btnSignIn=(Button)dialog.findViewById(R.id.buttonSignIn);

        // Set On ClickListener
        btnSignIn.setOnClickListener(new View.OnClickListener() {

            public void onClick(View v) {
                // get The User name and Password
                String userName=editTextUserName.getText().toString();
                String password=editTextPassword.getText().toString();

                // fetch the Password form database for respective user name
                String storedPassword=loginDataBaseAdapter.getSinlgeEntry(userName);

                // check if the Stored password matches with  Password entered by user
                if(password.equals(storedPassword))
                {
                    startActivity(new Intent("com.example.system.HOMEACTIVITY"));
                }
                else
                {
                    Toast.makeText(LoginActivity.this, "User Name or Password does not match", Toast.LENGTH_LONG).show();
                }
            }
        });

        dialog.show();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    // Close The Database
    loginDataBaseAdapter.close();
}

Answer 1

根据您的需要，您可以使用 sharedpreference 来保存所有用户详细信息。并在用户注销时删除它。或者您可以使用更复杂的解决方案，例如 Android accountmanager。这里的链接显示了它们是如何协同工作的。

https://udinic.wordpress.com/tag/account-manager/