Android简单的自定义用户登陆对话框

来源：互联网发布：仙灵觉醒仙羽进阶数据编辑：程序博客网时间：2024/05/16 09:55

二、涉及到的基本组件和原理

1、基本组件：AndroidUI、View、TextView、EditText、Button、CheckBox、动画Animation、线程Thread及Handler等。

2、原理：点击button前判断用户输入的用户名和密码是否为空，两个都不为空时执行登陆，启动登陆动画，在新线程中模拟从远程登陆的方法（程序中sleep（2000）假设验证登陆失败），刷新界面组件。

三、我的理解和想法，全在代码中.....

package com.ui;import android.graphics.drawable.AnimationDrawable;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.CheckBox;import android.widget.EditText;import android.widget.Toast;import android.widget.ViewSwitcher;import com.common.UIHelper;import com.example.appmainui.R;import com.widget.BaseActivity;/** * @name 自定义用户登陆对话框 * @descripation 填写用户名和密码后，执行登陆，点击注册按钮转注册页面 * @author 樊俊彬 * @date 2014-6-8 * @version 1.0 */public class LoginDialogActivity extends BaseActivity {private EditText loginDialogInputUserName;private EditText loginDialogInputPassword;private Button loginDialogButtonRegist;private CheckBox loginDialogCheckBoxRememberMe;private Button loginDialogButtonLogin;private Button loginDialogButtonCancel;private ViewSwitcher loginDialogViewSwitcher;private View loginDialogView;private AnimationDrawable loginDialogAnimationLoading;private boolean isLoginSuccess = false;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.login_dialog);initUI();}/** * 初始化界面组件 */public void initUI() {// 加载界面组件loginDialogInputUserName = (EditText) findViewById(R.id.loginDialogInputUserName);loginDialogInputPassword = (EditText) findViewById(R.id.loginDialogInputPassword);loginDialogButtonRegist = (Button) findViewById(R.id.loginDialogRegisterButton);loginDialogCheckBoxRememberMe = (CheckBox) findViewById(R.id.loginDialogCheckBoxRememberMe);loginDialogButtonLogin = (Button) findViewById(R.id.loginDialogButtonLogin);loginDialogButtonCancel = (Button) findViewById(R.id.loginDialogButtonCancel);loginDialogViewSwitcher = (ViewSwitcher) findViewById(R.id.loginDialogViewSwitcher);loginDialogView = (View) findViewById(R.id.loginDialogViewLoading);// 点击取消按钮时结束loginDialogButtonCancel.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {LoginDialogActivity.this.finish();}});// 点击登陆时执行登陆loginDialogButtonLogin.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {// 用户名和密码不能为空String inputUserName = loginDialogInputUserName.getText().toString();String inputPassword = loginDialogInputPassword.getText().toString();if (!inputUserName.equals("")) {if (!inputPassword.equals("")) {// 执行登陆操作，开启登陆动画loginDialogAnimationLoading = (AnimationDrawable) loginDialogView.getBackground();loginDialogAnimationLoading.start();loginDialogViewSwitcher.showNext();loginSystem(inputUserName, inputPassword);} else {Toast.makeText(LoginDialogActivity.this, "请输入密码",Toast.LENGTH_SHORT).show();}} else {Toast.makeText(LoginDialogActivity.this, "请输入用户名",Toast.LENGTH_SHORT).show();}}});// 点击注册按钮时转注册页面loginDialogButtonRegist.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {UIHelper.showRegistUserInfo(LoginDialogActivity.this);}});}/** * 启动新线程验证用户名和密码,登陆到系统,同步刷新界面 *  * @param inputUserName * @param inputPassword */protected void loginSystem(String inputUserName, String inputPassword) {// 刷新界面final Handler handler = new Handler() {public void handleMessage(Message msg) {// 登陆成功if (msg.what == 1) {Toast.makeText(LoginDialogActivity.this, "登陆成功",Toast.LENGTH_SHORT).show();finish();}// 登陆失败if (msg.what == 0) {Toast.makeText(LoginDialogActivity.this, "登陆失败",Toast.LENGTH_SHORT).show();loginDialogViewSwitcher.showPrevious();}}};// 登陆验证线程new Thread() {@Overridepublic void run() {super.run();Message msg = new Message();try {// 验证用户名和密码sleep(2000);isLoginSuccess = false;if (isLoginSuccess) {// 登陆成功msg.what = 1;} else {// 登陆失败msg.what = 0;}} catch (InterruptedException e) {e.printStackTrace();msg.what = -1;msg.obj = e;}handler.sendMessage(msg);}}.start();}}

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/logindialog_space"    android:layout_width="fill_parent"    android:layout_height="fill_parent" >    <ScrollView        android:id="@+id/login_scrollview"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        android:paddingLeft="14.0dip"        android:paddingRight="14.0dip"        android:paddingTop="14.0dip"        android:scrollbars="none" >        <ViewSwitcher            android:id="@+id/loginDialogViewSwitcher"            android:layout_width="fill_parent"            android:layout_height="wrap_content" >            <RelativeLayout                android:layout_width="fill_parent"                android:layout_height="wrap_content"                android:background="@drawable/login_dialog_background"                android:paddingBottom="00.0dip">                <!-- 账号与密码输入 -->                <LinearLayout                    android:id="@+id/layout1"                    android:layout_width="fill_parent"                    android:layout_height="wrap_content"                    android:layout_marginLeft="5dip"                    android:layout_marginRight="5dip"                    android:layout_marginTop="60.0dip"                    android:background="@drawable/login_dialog_input"                    android:orientation="vertical" >                    <EditText                        android:id="@+id/loginDialogInputUserName"                        android:layout_width="fill_parent"                        android:layout_height="44.0dip"                        android:background="#00ffffff"                        android:ems="10"                        android:hint="点此输入账号/邮箱"                        android:maxLength="16"                        android:maxLines="1"                        android:paddingLeft="12.0dip"                        android:textColor="#ff1d1d1d"                        android:textColorHint="#ff666666"                        android:textSize="16.0sp" />                    <View                        android:layout_width="fill_parent"                        android:layout_height="1.0px"                        android:layout_marginLeft="1.0px"                        android:layout_marginRight="1.0px"                        android:background="#ffc0c3c4" />                    <EditText                        android:id="@+id/loginDialogInputPassword"                        android:layout_width="fill_parent"                        android:layout_height="43dp"                        android:background="#00ffffff"                        android:ems="10"                        android:gravity="center_vertical"                        android:hint="点此请输入密码"                        android:inputType="textPassword"                        android:maxLength="16"                        android:maxLines="1"                        android:paddingLeft="12.0dip"                        android:textColor="#ff1d1d1d"                        android:textColorHint="#ff666666"                        android:textSize="16.0sp" />                </LinearLayout>                <RelativeLayout                    android:id="@+id/layout2"                    android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:layout_below="@+id/layout1"                    android:layout_marginBottom="00dip"                    android:layout_marginLeft="5dip"                    android:layout_marginRight="5dip"                    android:layout_marginTop="0dip" >                    <CheckBox                        android:id="@+id/loginDialogCheckBoxRememberMe"                        android:layout_width="wrap_content"                        android:layout_height="wrap_content"                        android:button="@drawable/login_dialog_checkbox_selector"                        android:checked="true"                        android:text="记住我的信息"                        android:textColor="@color/black"                        android:textSize="@dimen/text_size_14" />                    <Button                        android:id="@+id/loginDialogRegisterButton"                        android:layout_width="wrap_content"                        android:layout_height="wrap_content"                        android:layout_alignParentRight="true"                        android:layout_marginRight="5dip"                        android:background="@drawable/login_dialog_register_btn_selector"                        android:clickable="true"                        android:text="注册新账号"                        android:textColor="@color/black"                        android:textSize="@dimen/text_size_12" />                </RelativeLayout>                <RelativeLayout                    android:id="@+id/layout3"                    android:layout_width="wrap_content"                    android:layout_height="50dip"                    android:layout_below="@+id/layout2"                    android:layout_marginLeft="5dip"                    android:layout_marginRight="5dip" >                    <Button                        android:id="@+id/loginDialogButtonLogin"                        android:layout_width="140dip"                        android:layout_height="40dip"                        android:layout_alignParentLeft="true"                        android:background="@drawable/login_dailog_button_selector"                        android:text="登陆"                        android:textColor="@color/black"                        android:textSize="@dimen/text_size_20" />                    <Button                        android:id="@+id/loginDialogButtonCancel"                        android:layout_width="140dip"                        android:layout_height="40dip"                        android:layout_alignParentRight="true"                        android:background="@drawable/login_dailog_button_selector"                        android:text="取消"                        android:textColor="@color/black"                        android:textSize="@dimen/text_size_20" />                </RelativeLayout>            </RelativeLayout>            <View                android:id="@+id/loginDialogViewLoading"                android:layout_width="135.0dip"                android:layout_height="135.0dip"                android:layout_gravity="center"                android:background="@anim/login_loading" />        </ViewSwitcher>    </ScrollView></RelativeLayout>

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