Android中使用ViewPage进行广告轮播测试代码

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context=".MainActivity">    <android.support.v4.view.ViewPager        android:id="@+id/viewpager"        android:layout_width="match_parent"        android:layout_height="200dp" />    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignBottom="@id/viewpager"        android:background="#33000000"        android:orientation="vertical"        android:padding="5dp">        <TextView            android:id="@+id/tv_image_description"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center"            android:text="广告测试"            android:textColor="@android:color/white" />        <LinearLayout            android:id="@+id/ll_point_group"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_gravity="center_horizontal"            android:layout_marginTop="5dp"            android:orientation="horizontal"/>    </LinearLayout></RelativeLayout>

point_background.xml

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android">    <item android:drawable="@drawable/point_bg_enable" android:state_enabled="true"/>    <item android:drawable="@drawable/point_bg_normal" android:state_enabled="false"/></selector>

point_bg_enable.xml

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="oval" >    <corners android:radius="0.5dp" />    <solid android:color="#AAFFFFFF" /></shape>

point_bg_normal.xml

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="oval">    <corners android:radius="0.5dp" />    <solid android:color="#55000000" /></shape>

MainActivity

package cn.seanlou.viewpagedemo;import android.app.Activity;import android.graphics.drawable.GradientDrawable;import android.os.Handler;import android.os.Message;import android.os.SystemClock;import android.provider.ContactsContract;import android.support.v4.view.PagerAdapter;import android.support.v4.view.ViewPager;import android.support.v7.app.ActionBarActivity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.TextView;import android.widget.Toast;import java.util.ArrayList;import java.util.List;public class MainActivity extends Activity {    private ViewPager mViewPager;    private TextView tvDescription;    private LinearLayout llPointGroup;    /**     * 广告条正下方的标语     */    private String[] imageDescriptionArray = {"广告1", "广告2", "广告3", "广告4", "广告5"};    /**     * 记录上一次点的位置，默认为0     */    private int previousPointEnale = 0;    private List<ImageView> mImageList = new ArrayList<ImageView>();    int[] imageIds = new int[]{R.mipmap.a, R.mipmap.b, R.mipmap.c, R.mipmap.d, R.mipmap.e};    /**     * 记录是否停止循环播放     */    private boolean isStop = false;    private Handler handler = new Handler() {        @Override        public void handleMessage(Message msg) {            mViewPager.setCurrentItem(mViewPager.getCurrentItem() + 1);            super.handleMessage(msg);        }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        findView();        testAD();    }    /**     * 测试广告     */    private void testAD() {        // TODO:广告        mImageList.clear();        llPointGroup.removeAllViews();        // 初始化广告条资源        for (final int id : imageIds) {            ImageView mImageView = new ImageView(this);            mImageView.setBackgroundResource(id);            mImageView.setOnClickListener(new View.OnClickListener() {                @Override                public void onClick(View v) {                    Toast.makeText(MainActivity.this, id + "", Toast.LENGTH_SHORT).show();                }            });            mImageList.add(mImageView);            // 初始化广告条正下方的"点"            View dot = new View(this);            dot.setBackgroundResource(R.drawable.point_background);            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(5, 5);            params.leftMargin = 10;            dot.setLayoutParams(params);            dot.setEnabled(false);            llPointGroup.addView(dot);        }        mViewPager.setAdapter(new ADsAdapter());        // 设置广告条跳转时，广告语和状态语的变化        mViewPager.setOnPageChangeListener(new MyOnPageChangeListener());        // 初始化广告条，当前索引Integer.MAX_VALUE的一半        int index = (Integer.MAX_VALUE / 2) - (Integer.MAX_VALUE / 2 % mImageList.size());        mViewPager.setCurrentItem(index); // 设置当前选中的Page，会触发onPageChangListener.onPageSelected方法    }    private void findView() {        mViewPager = (ViewPager) findViewById(R.id.viewpager);        tvDescription = (TextView) findViewById(R.id.tv_image_description);        llPointGroup = (LinearLayout) findViewById(R.id.ll_point_group);    }    /**     * 滑动监听     */    private class MyOnPageChangeListener implements ViewPager.OnPageChangeListener {        @Override        public void onPageScrolled(int i, float v, int i2) {        }        @Override        public void onPageSelected(int i) {            //获取新的位置            int newPosition = i % imageDescriptionArray.length;            //设置广告标语            tvDescription.setText(imageDescriptionArray[newPosition]);            //消除上一次的状态点            llPointGroup.getChildAt(previousPointEnale).setEnabled(false);            //设置当前的状态点            llPointGroup.getChildAt(newPosition).setEnabled(true);            //记录新的位置            previousPointEnale = newPosition;        }        @Override        public void onPageScrollStateChanged(int i) {        }    }    private class ADsAdapter extends PagerAdapter {        @Override        public int getCount() {            // 将viewpager页数设置成Integer.MAX_VALUE，可以模拟无限循环            return Integer.MAX_VALUE;        }        /**         * 复用对象 true 复用view false 复用的是Object         */        @Override        public boolean isViewFromObject(View view, Object o) {            return view == o;        }        @Override        public Object instantiateItem(ViewGroup container, int position) {            container.addView(mImageList.get(position % mImageList.size()));            return mImageList.get(position % mImageList.size());        }        /**         * 销毁对象         *         * @param position 被销毁对象的索引位置         */        @Override        public void destroyItem(ViewGroup container, int position, Object object) {            container.removeView(mImageList.get(position % mImageList.size()));        }    }    @Override    public void onResume() {        // 开启子线程，让广告条以3秒的频率循环播放        isStop = false;        new Thread(new Runnable() {            @Override            public void run() {                while (!isStop) {                    SystemClock.sleep(3000);                    handler.sendEmptyMessage(-1);                }            }        }).start();        super.onResume();    }    @Override    public void onPause() {        // FragmentHome销毁时候，关闭循环播放        isStop = true;        super.onPause();    }}

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