Android仿人人客户端（v5.7.1）——欢迎和导引界面的编码实现

转载请标明出处：http://blog.csdn.net/android_ls/article/details/8711766
声明：仿人人项目，所用所有图片资源都来源于官方人人android客户端，编写本应用的目的在于学习交流，如涉及侵权请告知，我会及时换掉用到的相关图片。

一、应用框架搭建，自定义类继承Application，用于存放全局变量和公用的资源等，代码如下：

package com.copyeveryone.android;

import java.util.LinkedList;
import java.util.List;

import android.app.Activity;
import android.app.Application;

/**
 * 功能描述：用于存放全局变量和公用的资源等
 * @author android_ls
 */
public class CopyEveryoneApplication extends Application {

    private List<Activity> activitys = new LinkedList<Activity>();

    // 应用程序的入口
    @Override
    public void onCreate() {

    }

    public void addActivity(Activity activity) {
        activitys.add(activity);
    }

    @Override
    public void onTerminate() {
        for (Activity activity : activitys) {
            activity.finish();
        }
        System.exit(0);
    }

}

二、应用中界面（Activity）的基类，代码如下：

package com.copyeveryone.android;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Toast;

/**
 * 功能描述：应用中界面（Activity）的基类
 * 对原有的Activity类进行扩展
 * @author android_ls
 */
public abstract class AppBaseActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        ((CopyEveryoneApplication) this.getApplication()).addActivity(this);
        setContentView(getLayoutId());

        // 初始化组件
        setupView();
        // 初始化数据
        initializedData();
    }

    /**
     * 布局文件ID
     * @return
     */
    protected abstract int getLayoutId();

    /**
     * 初始化组件
     */
    protected abstract void setupView();

    /**
     * 初始化数据
     */
    protected abstract void initializedData();

    /**
     * 显示Toast形式的提示信息
     * @param message
     */
    protected void show(String message) {
        Toast.makeText(getApplicationContext(), message, Toast.LENGTH_LONG).show();
    }

}

三、欢迎界面（LOGO）的实现，代码如下：

package com.copyeveryone.android.ui;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.CountDownTimer;

import com.copyeveryone.android.R;

/**
 * 功能描述：欢迎界面（LOGO）
 * @author android_ls
 */
public class WelcomeActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.welcome);

        new CountDownTimer(1000, 1000) {

            @Override
            public void onTick(long millisUntilFinished) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onFinish() {
                Intent intent = new Intent(WelcomeActivity.this, GuideActivity.class);
                startActivity(intent);
                WelcomeActivity.this.finish();
            }
        }.start();
    }

}

布局文件welcome.xml：

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/v5_0_1_welcome"
    android:orientation="vertical" />

四、导引界面的实现，界面效果动画原理：每张图片都执行的动画顺序，渐现、放大和渐隐，结束后切换图片和文字又开始执行渐现、放大和渐隐...，当最后一张执行完渐隐，切换到第一张，从而达到循环效果。具体代码如下：

package com.copyeveryone.android.ui;

import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.Animation.AnimationListener;
import android.view.animation.AnimationUtils;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;

import com.copyeveryone.android.AppBaseActivity;
import com.copyeveryone.android.R;

/**
 * 功能描述：导引界面
 * 界面效果动画原理：每张图片都执行的动画顺序，渐现、放大和渐隐，结束后切换图片和文字
 * 又开始执行 渐现、放大和渐隐...，当最后一张执行完渐隐，切换到第一张，从而达到循环效果。
 * @author android_ls
 */
public class GuideActivity extends AppBaseActivity implements View.OnClickListener {

    /**
     * 注册按钮
     */
    private Button btnRegister;

    /**
     * 看看我认识的人按钮
     */
    private Button btnLookAtThePeopleIKnow;

    /**
     * 登录按钮
     */
    private Button btnLogin;

    /**
     * 显示图片的ImageView组件
     */
    private ImageView ivGuidePicture;

    /**
     * 显示图片的对应的文字描述文本组件
     */
    private TextView tvGuideContent;

    /**
     * 要展示的一组图片资源
     */
    private Drawable[] pictures;

    /**
     * 每张展示图片要执行的一组动画效果
     */
    private Animation[] animations;

    /**
     * 当前执行的是第几张图片（资源索引）
     */
    private int position = 0;

    /**
     * 要展示的图片对应的文本描述（图片与文字一一对应）
     */
    private String[] texts = { "儿时友,莫相忘", "同学情,请珍藏", "共奋斗,同分享", "感谢一路有你", "青春勇敢飞翔", "理想从未远去" };

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        tvGuideContent.setText(texts[position]);
        ivGuidePicture.setImageDrawable(pictures[position]);
        ivGuidePicture.startAnimation(animations[0]);
    }

    @Override
    protected int getLayoutId() {
        return R.layout.guide;
    }

    @Override
    protected void setupView() {
        ivGuidePicture = (ImageView) findViewById(R.id.iv_guide_picture);
        tvGuideContent = (TextView) findViewById(R.id.tv_guide_content);
        btnRegister = (Button) findViewById(R.id.btn_register);
        btnLookAtThePeopleIKnow = (Button) findViewById(R.id.btn_look_at_the_people_i_know);
        btnLogin = (Button) findViewById(R.id.btn_login);

        btnRegister.setOnClickListener(this);
        btnLookAtThePeopleIKnow.setOnClickListener(this);
        btnLogin.setOnClickListener(this);

    }

    @Override
    protected void initializedData() {
        pictures = new Drawable[] { getResources().getDrawable(R.drawable.v5_0_1_guide_pic1), getResources().getDrawable(R.drawable.v5_0_1_guide_pic2),
                getResources().getDrawable(R.drawable.v5_0_1_guide_pic3), getResources().getDrawable(R.drawable.v5_3_0_guide_pic1),
                getResources().getDrawable(R.drawable.v5_3_0_guide_pic2), getResources().getDrawable(R.drawable.v5_3_0_guide_pic3) };

        animations = new Animation[] { AnimationUtils.loadAnimation(this, R.anim.v5_0_1_guide_welcome_fade_in),
                AnimationUtils.loadAnimation(this, R.anim.v5_0_1_guide_welcome_fade_in_scale),
                AnimationUtils.loadAnimation(this, R.anim.v5_0_1_guide_welcome_fade_out) };

        animations[0].setDuration(1500);
        animations[1].setDuration(3000);
        animations[2].setDuration(1500);

        animations[0].setAnimationListener(new GuideAnimationListener(0));
        animations[1].setAnimationListener(new GuideAnimationListener(1));
        animations[2].setAnimationListener(new GuideAnimationListener(2));
    }

    @Override
    public void onClick(View v) {

        switch (v.getId()) {
        case R.id.btn_register:
            show("抱歉，该功能暂未提供！");
            break;
        case R.id.btn_look_at_the_people_i_know:
            show("抱歉，该功能暂未提供！");
            break;
        case R.id.btn_login:

            break;
        default:
            break;
        }
    }

    class GuideAnimationListener implements AnimationListener {

        private int index;

        public GuideAnimationListener(int index) {
            this.index = index;
        }

        @Override
        public void onAnimationStart(Animation animation) {
            // TODO Auto-generated method stub
        }

        @Override
        public void onAnimationEnd(Animation animation) {
            if (index < (animations.length - 1)) {
                ivGuidePicture.startAnimation(animations[index + 1]);
            } else {
                position++;
                if (position > (pictures.length - 1)) {
                    position = 0;
                }

                System.out.println("position = " + position);

                tvGuideContent.setText(texts[position]);
                ivGuidePicture.setImageDrawable(pictures[position]);
                ivGuidePicture.startAnimation(animations[0]);
            }
        }

        @Override
        public void onAnimationRepeat(Animation animation) {

        }

    }

}

布局文件guide.xml：

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:orientation="vertical" >

        <ImageView
            android:id="@+id/iv_guide_picture"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:layout_weight="1.0"
            android:scaleType="fitXY" />

        <LinearLayout
            android:id="@+id/ll_bottom_action_bar"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:orientation="horizontal"
            android:padding="7dip" >

            <Button
                android:id="@+id/btn_register"
                android:layout_width="fill_parent"
                android:layout_height="45dip"
                android:layout_weight="1.5"
                android:background="@drawable/guide_btn_blue_selector"
                android:gravity="center"
                android:singleLine="true"
                android:text="注  册"
                android:textColor="#FFFFFF"
                android:textSize="15.0sp" />

            <Button
                android:id="@+id/btn_look_at_the_people_i_know"
                android:layout_width="fill_parent"
                android:layout_height="45dip"
                android:layout_marginLeft="8dip"
                android:layout_marginRight="8dip"
                android:layout_weight="1.0"
                android:background="@drawable/guide_btn_white_selector"
                android:gravity="center"
                android:singleLine="true"
                android:text="看看我认识的人"
                android:textColor="#000000"
                android:textSize="15.0sp" />

            <Button
                android:id="@+id/btn_login"
                android:layout_width="fill_parent"
                android:layout_height="45dip"
                android:layout_weight="1.5"
                android:background="@drawable/guide_btn_blue_selector"
                android:gravity="center"
                android:singleLine="true"
                android:text="登  录"
                android:textColor="#FFFFFF"
                android:textSize="15.0sp" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_above="@+id/ll_bottom_action_bar"
            android:layout_marginBottom="40dip"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/tv_guide_content"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_horizontal"
                android:gravity="center"
                android:textColor="#FFFFFF"
                android:textSize="25.0sp"
                android:textStyle="bold" />
        </LinearLayout>
    </RelativeLayout>

</FrameLayout>

资源文件guide_btn_blue_selector.xml：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/v5_0_1_guide_blue_default" android:state_focused="true" android:state_pressed="false"/>
    <item android:drawable="@drawable/v5_0_1_guide_blue_press" android:state_pressed="true"/>
    <item android:drawable="@drawable/v5_0_1_guide_blue_default"/>

</selector>

资源文件guide_btn_white_selector.xml：

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:drawable="@drawable/v5_0_1_guide_black_default" android:state_focused="true" android:state_pressed="false"/>
    <item android:drawable="@drawable/v5_0_1_guide_black_press" android:state_pressed="true"/>
    <item android:drawable="@drawable/v5_0_1_guide_black_default"/>

</selector>

渐入动画资源文件v5_0_1_guide_welcome_fade_in.xml：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <alpha
        android:fromAlpha="0.0"
        android:toAlpha="1.0" />

</set>

放大动画资源文件v5_0_1_guide_welcome_fade_in_scale.xml：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <scale
        android:fillAfter="false"
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:interpolator="@android:anim/decelerate_interpolator"
        android:pivotX="50.0%"
        android:pivotY="50.0%"
        android:toXScale="1.1"
        android:toYScale="1.1" />

</set>

渐隐动画资源文件v5_0_1_guide_welcome_fade_out.xml：

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <scale
        android:fillAfter="false"
        android:fromXScale="1.1"
        android:fromYScale="1.1"
        android:interpolator="@android:anim/decelerate_interpolator"
        android:pivotX="50.0%"
        android:pivotY="50.0%"
        android:toXScale="1.1"
        android:toYScale="1.1" />

    <alpha
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:fromAlpha="1.0"
        android:toAlpha="0.0" />

</set>

注：所涉及的图片在人人官方的android应用中都有。

五、运行效果图：