Android使用xml實現登錄頁面

直接上已經實現的登錄頁面圖

xml代碼

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/activity_login"
    android:background="@drawable/bg11"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="16dp">

    <LinearLayout
        android:id="@+id/inputText"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="200dp"
        android:orientation="vertical">

        <EditText
            android:id="@+id/phone_text"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="@string/phone_hint"
            android:inputType="phone"
            android:maxLength="11"
            android:textSize="25sp" />

        <EditText
            android:id="@+id/password_text"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:ems="10"
            android:hint="@string/password_hint"
            android:inputType="textPassword"
            android:maxLength="32"
            android:textSize="25sp" />
    </LinearLayout>

    <LinearLayout
        android:id="@+id/checkbox_option"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/inputText">

        <CheckBox
            android:id="@+id/remenber_password"
            android:textColor="@color/colorFont"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="20dp"
            android:text="記住密碼" />

        <CheckBox
            android:id="@+id/login_auto"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="100dp"
            android:textColor="@color/colorFont"
            android:text="自動登錄" />
    </LinearLayout>

    <LinearLayout

        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/checkbox_option">

        <Button
            android:id="@+id/login_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="50dp"
            android:layout_marginTop="15dp"
            android:background="@color/colorButton"
            android:text="@string/action_login"
            android:textAppearance="@style/TextAppearance.AppCompat"
            android:textColor="@color/colorFont"
            android:textSize="20dp" />

        <Button
            android:id="@+id/register_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginLeft="50dp"
            android:layout_marginTop="15dp"
            android:background="@color/colorButton"
            android:text="@string/action_register"
            android:textAppearance="@style/TextAppearance.AppCompat"
            android:textColor="@color/colorFont"
            android:textSize="20dp" />
    </LinearLayout>
</RelativeLayout>

登錄java代碼

import android.app.ProgressDialog;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.Toast;

import com.xujun.busticketsystem.utils.GetPostUtil;
import com.xujun.busticketsystem.utils.MD5Utils;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.NoSuchAlgorithmException;


public class LoginActivity extends AppCompatActivity {
    //服務器端URL
    //定義賬號，密碼輸入框
    private EditText mPhoneText;
    private EditText mPasswordText;
    //複選框
    private CheckBox mRemenber;//記住密碼
    private boolean mPasswordFlag = false;//記住密碼標誌
    private CheckBox mAutoLogin;//自動登錄
    private boolean mAutoLoginFlag = false;//自動登錄標誌

    private String userPassword = "";
    //定義登錄，註冊按鈕
    private Button mLoginButton;
    private Button mRegisterButton;
    //提示框
    private ProgressDialog mDialog;

    private static HttpURLConnection connection = null;
    private static DataOutputStream out = null;
    private static InputStream in = null;
    private static URL realUrl = null;
    private String params = "";//定義參數字符串

    //    private UserService mUserService = new UserServiceImpl();
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);
        //爲組件賦值
        mPhoneText = findViewById(R.id.phone_text);
        mPasswordText = findViewById(R.id.password_text);
        mRemenber = findViewById(R.id.remenber_password);
        mAutoLogin = findViewById(R.id.login_auto);
        mLoginButton = findViewById(R.id.login_button);
        mRegisterButton = findViewById(R.id.register_button);
        SharedPreferences sharedPreferences = getSharedPreferences("busApp", MODE_PRIVATE);

        //如果不爲空
        if (sharedPreferences != null) {
            String userName = sharedPreferences.getString("username", "");
            userPassword = sharedPreferences.getString("password", "");
            mPasswordFlag = sharedPreferences.getBoolean("remenber", false);
            mAutoLoginFlag = sharedPreferences.getBoolean("auto", false);
            mPhoneText.setText(userName);
        }

        //確定爲true獲取 記住密碼，打鉤
        if (mPasswordFlag) {
            mRemenber.setChecked(true);
            mPasswordText.setText(userPassword);
        }
        //選擇了自動登錄後直接登錄
        if (mAutoLoginFlag){
            mAutoLogin.setChecked(true);
            String username = mPhoneText.getText().toString();
            String password = mPasswordText.getText().toString();
            login(username,password);

        }
        //註冊監聽
        mRemenber.setOnClickListener(mListener);
        mRemenber.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                //記住密碼
                //如果是選中記住密碼，取消記住密碼、自動登錄
                if (!isChecked){
                    mAutoLogin.setChecked(false);
                    //清空密碼輸入框
                    mPasswordText.setText("");

                }
            }
        });

//        mAutoLogin.setOnClickListener(mListener);
        mLoginButton.setOnClickListener(mListener);
        mRegisterButton.setOnClickListener(mListener);
    }

    //點擊事件
    View.OnClickListener mListener = new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            //根據view的id判斷點擊的是哪個視圖
            switch (v.getId()) {
                case R.id.login_button:
                    //1 創建 SharePreferences 對象

                    String username = mPhoneText.getText().toString();
                    String password = mPasswordText.getText().toString();
                    Log.d("輸入框獲取的密碼", "onClick: " + password);
                    //沒有記住密碼時 MD5密碼加密

                    SharedPreferences sharedPreferences = getSharedPreferences("busApp", MODE_PRIVATE);
                    SharedPreferences.Editor editor = sharedPreferences.edit();
                    //2  創建Editor對象，寫入值
                    editor.putString("username", username);
                    if (mRemenber.isChecked()) {
                        if(!mPasswordFlag){

                            try {
                                password = MD5Utils.getMD5(password);
                                Log.d("記住密碼選中且false加密後密碼", "onClick: " + password);
                            } catch (NoSuchAlgorithmException e) {
                                e.printStackTrace();
                            }
                            mPasswordFlag = true;

                        }
                        editor.putBoolean("remenber", mPasswordFlag);
                        editor.putString("password", password);
                        Log.d("記住密碼選中寫入的密碼", "onClick: " + password);
                        //選中自動登錄
                        if (mAutoLogin.isChecked()){
                            mAutoLoginFlag = true;
                        }else{
                            mAutoLoginFlag = false;
                        }
                        editor.putBoolean("auto", mAutoLoginFlag);
                    } else {
                        if(!mPasswordFlag){

                            try {
                                password = MD5Utils.getMD5(password);
                                Log.d("記住密碼未選中且false加密後密碼", "onClick: " + password);
                            } catch (NoSuchAlgorithmException e) {
                                e.printStackTrace();
                            }
                        }
                        //取消自動登錄和記住密碼,清空密碼
                        mPasswordFlag = false;
                        mAutoLoginFlag = false;
                        editor.putString("password", "");
                        editor.putBoolean("remenber", mPasswordFlag);
                        editor.putBoolean("auto", mAutoLoginFlag);
                    }
                    //3  提交
                    editor.commit();
                    //跳過登錄進入主界面
//                    startActivity(new Intent(LoginActivity.this,MainActivity.class));
                    login(username, password);
                    break;
                case R.id.register_button:
                    register();
                    break;
                default:
                    break;
            }
        }
    };

    private void login(String username,String password) {
        mDialog = new ProgressDialog(LoginActivity.this);
        mDialog.setTitle("正在登陸...");
        mDialog.setMessage("請稍後...");
        mDialog.setCancelable(false);//設置不能通過後退鍵取消
        mDialog.show();
        //將登錄名和密碼拼接
        params = "?username=" + username + "&password=" + password;

        LoginTask task = new LoginTask();
        task.execute();
    }

    private void register() {
        Intent intent = new Intent(LoginActivity.this, RegisterActivity.class);
        startActivity(intent);
    }

    private void showResponse(final String response) {
        runOnUiThread(new Runnable() {
            @Override
            public void run() {
                Toast.makeText(LoginActivity.this, response, Toast.LENGTH_SHORT).show();
                mDialog.dismiss();
                finish();
            }
        });
    }

    //得到字節輸入流，將字節輸入流轉成String類型
    public static String parseInfo(InputStream inputStream) {
        BufferedReader reader = null;
        String line = "";
        StringBuilder response = new StringBuilder();
        try {
            reader = new BufferedReader(new InputStreamReader(inputStream));
            while ((line = reader.readLine()) != null) {
                response.append(line);
            }
            return response.toString();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return null;
    }

    public class LoginTask extends AsyncTask<Void, Void, Void> {

        @Override
        protected Void doInBackground(Void... voids) {
            String response = GetPostUtil.executeHttpGet(params,"LoginServlet");
            showResponse(response);
            return null;
        }
    }
}

這是本人畢設的Android代碼，完全是可以用的。

登錄記住密碼和自動登錄實現

註冊頁面實現鏈接