android仿微信引导页面

来源：互联网发布：skycc软件怎么下载编辑：程序博客网时间：2024/05/17 04:40

1效果图：

2.程序的目录结构

三、具体的编码实现

1、在主布局界面中加入ViewPager组件，以及底部的小点，activity_main.xml:

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"        xmlns:tools="http://schemas.android.com/tools"        android:layout_width="wrap_content"        android:layout_height="wrap_content" >        <android.support.v4.view.ViewPager            android:id="@+id/viewpager"            android:layout_width="fill_parent"            android:layout_height="fill_parent" />        <LinearLayout            android:id="@+id/ll"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_alignParentBottom="true"            android:layout_centerHorizontal="true"            android:layout_marginBottom="24.0dip"            android:orientation="horizontal" >            <ImageView                android:id="@+id/page0"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center_vertical"                android:clickable="true"                android:padding="5dip"                android:src="@drawable/page_indicator_focused" />            <ImageView                android:id="@+id/page1"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center_vertical"                android:clickable="true"                android:padding="5dip"                android:src="@drawable/page_indicator_unfocused" />            <ImageView                android:id="@+id/page2"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center_vertical"                android:clickable="true"                android:padding="5dip"                android:src="@drawable/page_indicator_unfocused" />            <ImageView                android:id="@+id/page3"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center_vertical"                android:clickable="true"                android:padding="5dip"                android:src="@drawable/page_indicator_unfocused" />            <ImageView                android:id="@+id/page4"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center_vertical"                android:clickable="true"                android:padding="5dip"                android:src="@drawable/page_indicator_unfocused" />            <ImageView                android:id="@+id/page5"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:layout_gravity="center_vertical"                android:clickable="true"                android:padding="5dip"                android:src="@drawable/page_indicator_unfocused" />        </LinearLayout>    </RelativeLayout>

2、接着在guide_view01.xml等几个布局页面中添加引导界面要显示的图片和控件，因为这几个布局界面都大同小异，所以在这里我就不一一贴出来了吧，有需要的同学可以直接下载源码，guide_view01.xml：

<?xml version="1.0" encoding="UTF-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:background="@drawable/w01"    android:orientation="vertical" >    <TextView        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:layout_marginTop="35dp"        android:gravity="center"        android:text="@string/guide_text01"        android:textColor="@color/TextColor"        android:textSize="22sp" /></RelativeLayout>

3、然后是要实现动画效果的布局界面，guide_door.xml：

<?xml version="1.0" encoding="UTF-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent" >    <ImageView        android:id="@+id/imageLeft"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:layout_alignParentLeft="true"        android:scaleType="fitXY"        android:src="@drawable/w_left" />    <ImageView        android:id="@+id/imageRight"        android:layout_width="fill_parent"        android:layout_height="fill_parent"        android:layout_alignParentRight="true"        android:scaleType="fitXY"        android:src="@drawable/w_right"        android:visibility="visible" />    <TextView        android:id="@+id/anim_text"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:layout_marginTop="35dp"        android:gravity="center"        android:text=" \n \n微信，是一个生活方式\n \n "        android:textColor="#fff"        android:textSize="22sp" /></RelativeLayout>

布局界面已经讲解完毕，接下来让我们进行详细的代码讲解，ViewPager适配器代码，ViewPagerAdapter.java：package com.yangyu.myguideview02;

package com.yangyu.myguideview02;import java.util.ArrayList;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.view.View;/** * @author yangyu *   功能描述：ViewPager适配器，用来绑定数据和view */public class ViewPagerAdapter extends PagerAdapter {            //界面列表    private ArrayList<View> views;        public ViewPagerAdapter (ArrayList<View> views){        this.views = views;    }               /**         * 获得当前界面数         */        @Override        public int getCount() {                 if (views != null) {             return views.size();         }               return 0;        }        /**         * 初始化position位置的界面         */    @Override    public Object instantiateItem(View view, int position) {               ((ViewPager) view).addView(views.get(position), 0);               return views.get(position);    }        /**         * 判断是否由对象生成界面         */        @Override        public boolean isViewFromObject(View view, Object arg1) {                return (view == arg1);        }        /**         * 销毁position位置的界面         */    @Override    public void destroyItem(View view, int position, Object arg2) {        ((ViewPager) view).removeView(views.get(position));           }}

主程序入口activity类，MainActivity.java：

package com.yangyu.myguideview02;import java.util.ArrayList;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.support.v4.view.ViewPager;import android.support.v4.view.ViewPager.OnPageChangeListener;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;/** * @author yangyu *   功能描述：主程序入口activity */public class MainActivity extends Activity {        // 定义ViewPager对象        private ViewPager viewPager;        // 定义ViewPager适配器        private ViewPagerAdapter vpAdapter;        // 定义一个ArrayList来存放View        private ArrayList<View> views;        //定义各个界面View对象        private View view1,view2,view3,view4,view5,view6;                // 定义底部小点图片        private ImageView pointImage0, pointImage1, pointImage2, pointImage3,pointImage4, pointImage5;        //定义开始按钮对象        private Button startBt;                // 当前的位置索引值        private int currIndex = 0;        @Override        protected void onCreate(Bundle savedInstanceState) {                super.onCreate(savedInstanceState);                setContentView(R.layout.activity_main);                initView();                initData();        }        /**         * 初始化组件         */        private void initView() {                //实例化各个界面的布局对象                 LayoutInflater mLi = LayoutInflater.from(this);                view1 = mLi.inflate(R.layout.guide_view01, null);                view2 = mLi.inflate(R.layout.guide_view02, null);                view3 = mLi.inflate(R.layout.guide_view03, null);                view4 = mLi.inflate(R.layout.guide_view04, null);                view5 = mLi.inflate(R.layout.guide_view05, null);                view6 = mLi.inflate(R.layout.guide_view06, null);                                                // 实例化ViewPager                viewPager = (ViewPager) findViewById(R.id.viewpager);                // 实例化ArrayList对象                views = new ArrayList<View>();                // 实例化ViewPager适配器                vpAdapter = new ViewPagerAdapter(views);                // 实例化底部小点图片对象                pointImage0 = (ImageView) findViewById(R.id.page0);                pointImage1 = (ImageView) findViewById(R.id.page1);                pointImage2 = (ImageView) findViewById(R.id.page2);                pointImage3 = (ImageView) findViewById(R.id.page3);                pointImage4 = (ImageView) findViewById(R.id.page4);                pointImage5 = (ImageView) findViewById(R.id.page5);                                //实例化开始按钮                startBt = (Button) view6.findViewById(R.id.startBtn);        }        /**         * 初始化数据         */        private void initData() {                // 设置监听                viewPager.setOnPageChangeListener(new MyOnPageChangeListener());                // 设置适配器数据                viewPager.setAdapter(vpAdapter);                //将要分页显示的View装入数组中                                views.add(view1);                views.add(view2);                views.add(view3);                views.add(view4);                views.add(view5);                views.add(view6);                                                                                // 给开始按钮设置监听                startBt.setOnClickListener(new OnClickListener() {                        @Override                        public void onClick(View v) {                                 startbutton();                        }                });        }        public class MyOnPageChangeListener implements OnPageChangeListener {                @Override                public void onPageSelected(int position) {                        switch (position) {                        case 0:                                pointImage0.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_focused));                                pointImage1.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_unfocused));                                break;                        case 1:                                pointImage1.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_focused));                                pointImage0.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_unfocused));                                pointImage2.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_unfocused));                                break;                        case 2:                                pointImage2.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_focused));                                pointImage1.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_unfocused));                                pointImage3.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_unfocused));                                break;                        case 3:                                pointImage3.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_focused));                                pointImage4.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_unfocused));                                pointImage2.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_unfocused));                                break;                        case 4:                                pointImage4.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_focused));                                pointImage3.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_unfocused));                                pointImage5.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_unfocused));                                break;                        case 5:                                pointImage5.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_focused));                                pointImage4.setImageDrawable(getResources().getDrawable(R.drawable.page_indicator_unfocused));                                break;                        }                        currIndex = position;                        // animation.setFillAfter(true);// True:图片停在动画结束位置                        // animation.setDuration(300);                        // mPageImg.startAnimation(animation);                }                @Override                public void onPageScrollStateChanged(int arg0) {                }                @Override                public void onPageScrolled(int arg0, float arg1, int arg2) {                }        }                /**         * 相应按钮点击事件         */        private void startbutton() {                Intent intent = new Intent();                intent.setClass(MainActivity.this,GuideViewDoor.class);                startActivity(intent);                this.finish();      }        }

大家也许想借用此模板进行不同个数的画面进行切换，比如说三个画面切换，当设置view的个数为三个时候，进行相关改动运行后，程序会报错，错误截图为

The application’s PagerAdapter changed the adapter’s contents without calling PagerAdapter#notifyDataSetChanged

FATAL EXCEPTION: main java.lang.IllegalStateException: The application’s PagerAdapter changed the adapter’s contents without calling PagerAdapter#notifyDataSetChanged!

出这个错，是因为你的PagerAdapter中的数据变了，但是没有调用adapter.notifyDataSetChanged方法。

此时大家不用急，只用加一个函数就可以解决问题

vpAdapter.notifyDataSetChanged();

vpAdapter为自定义ViewPager适配器。

源码下载：点击下载源码

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