安卓登录的解决方案(记住密码)

安卓登录解决方案

在安卓开发中，肯定少不了登录，前几天写了个登录的demo，就想着记录下来，是新手，写的可能不太好，但是能用，以后写登录的时候直接copy不就好了么哈哈哈哈哈O(∩_∩)O~

Emmm，先上代码吧

LoginActivity

public class LoginActivity extends Activity implements View.OnClickListener {

    private SharedPreferences sp;
    private SharedPreferences.Editor editor;

    private ProgressBar processBar;
    private AutoCompleteTextView autoUsername;
    private EditText editTextPassword;
    private Button btnSignIn;
    private Button btnSignUp;
    private CheckBox checkBox;

    public static int LOG_OUT = 0;		//注销登录标识

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

        sp = PreferenceManager.getDefaultSharedPreferences(this);//获取SharedPreferences

        processBar =(ProgressBar) findViewById(R.id.login_progress);
        autoUsername = (AutoCompleteTextView) findViewById(R.id.username);
        editTextPassword = (EditText) findViewById(R.id.password);
        btnSignIn = (Button) findViewById(R.id.sign_in_button);
        btnSignUp = (Button) findViewById(R.id.sign_up_button);
        checkBox = (CheckBox)findViewById(R.id.rem_for_password);


        btnSignIn.setOnClickListener(this);
        btnSignUp.setOnClickListener(this);

        boolean isRemember = sp.getBoolean("remember_password",false);      //在SharedPreferences中获取是否记住密码
        if(getIntent().getFlags() == LOG_OUT){		//若是注销登录，那就不要记住密码了是吧
            isRemember = false;
        }
        if (isRemember){        //若记住密码，则在SharedPreferences中获取进行自动登录
            String username = sp.getString("username","");
            String password = sp.getString("password","");
            autoUsername.setText(username);
            editTextPassword.setText(password);
            checkBox.setChecked(true);

            //记住密码自动登录
            doLogin(username,password);
        }

    }

    @Override
    public void onClick(View view) {
        switch (view.getId()){
            case R.id.sign_in_button:
                if(!processBar.isShown()){
                    processBar.setVisibility(View.VISIBLE);
                }
                String username = autoUsername.getText().toString();
                String password = editTextPassword.getText().toString();

                doLogin(username,password);
                break;
            case R.id.sign_up_button:
                Intent intent = new Intent(LoginActivity.this,SignUpActivity.class);
                startActivity(intent);
                break;
            default:
                break;
        }
    }

    //登录
    private void doLogin(String username, String password) {

        editor = sp.edit();
        if(checkBox.isChecked()){       //若勾选记住密码，则在登录的时候将密码保存到SharedPreferences中
            editor.putBoolean("remember_password",true);
            editor.putString("username",username);
            editor.putString("password",password);
        }else {
            editor.clear();     //否则清空
        }
        editor.apply();

        //登录请求（RetrofitFactory是自己封装的网络请求工具，别到时候啥都复制不能用）
        RetrofitFactory.getInstance()
                .getService(UserService.class)
                .login(username, password)
                .enqueue(new Callback() {
                    @Override
                    public void onResponse(Call call, Response response) {
                        String name = response.body().getResult().getName();
                        Toast.makeText(LoginActivity.this,"登录成功，欢迎"+name,Toast.LENGTH_SHORT).show();
                        MyApplication.setUser(response.body().getResult());
                        if(processBar.isShown())
                            processBar.setVisibility(View.GONE);
                        Intent intent = new Intent(LoginActivity.this,MainActivity.class);
                        startActivity(intent);
                        finish();
                    }

                    @Override
                    public void onFailure(Call call, Throwable t) {
                        if(processBar.isShown())
                            processBar.setVisibility(View.GONE);
                        Toast.makeText(LoginActivity.this,"登录失败，请检查您的账户或者密码重新登录",Toast.LENGTH_SHORT).show();
                    }
                });
    }
}

activity_login.xml

注销登录

//注销登录
        Button logOut = (Button) findViewById(R.id.btn_logout);
        logOut.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(UerInfoActivity.this);
                SharedPreferences.Editor editor  = sp.edit();
                editor.putBoolean("remember_password",false);
                editor.apply();
                Intent intent = new Intent(UerInfoActivity.this,LoginActivity.class);
                intent.setFlags(LOG_OUT);
                startActivity(intent);
                finish();
            }
        });

啊~都写到这了，索性把注册也撂这

SignUpActivity

public class SignUpActivity extends Activity {

    private ProgressBar signupProgress;
    private AutoCompleteTextView autoTextName;
    private EditText editTextPassword;
    private EditText editTextAge;
    private EditText editTextAddress;
    private Button btnSignUp;

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

        signupProgress =(ProgressBar) findViewById(R.id.sign_up_progress);
        autoTextName = (AutoCompleteTextView) findViewById(R.id.sign_up_username);
        editTextPassword = (EditText) findViewById(R.id.sign_up_password);
        editTextAge = (EditText) findViewById(R.id.sign_up_age);
        editTextAddress = (EditText)findViewById(R.id.sign_up_address);
        btnSignUp = (Button) findViewById(R.id.sign_up);
        btnSignUp.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(!signupProgress.isShown()){
                    signupProgress.setVisibility(View.VISIBLE);
                }
                doSignUp();
            }
        });
    }

    /**
     * 注册
     */
    public void doSignUp() {
        String username = autoTextName.getText().toString();
        String password = editTextPassword.getText().toString();
        String age = editTextAge.getText().toString();
        String address = editTextAddress.getText().toString();

        RetrofitFactory.getInstance()
                .getService(UserService.class)
                .toSign(username,password, Integer.parseInt(age),address)
                .enqueue(new Callback() {
                    @Override
                    public void onResponse(Call call, Response response) {
                        Toast.makeText(SignUpActivity.this,"注册成功，去登录吧",Toast.LENGTH_SHORT).show();
                        if(signupProgress.isShown())
                            signupProgress.setVisibility(View.GONE);
                        //注册成功后跳转到登录界面
                        Intent intent = new Intent(SignUpActivity.this,LoginActivity.class);
                        startActivity(intent);
                        finish();
                    }

                    @Override
                    public void onFailure(Call call, Throwable t) {
                        if(signupProgress.isShown())
                            signupProgress.setVisibility(View.GONE);
                        Toast.makeText(SignUpActivity.this,"注册失败",Toast.LENGTH_SHORT).show();
                    }
                });
    }
}

activity_signup

刺激刺激~写完就走