ViewPager图片自动(手动)滑动
主布局文件:
activity_main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#ffffff"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="40dip"
android:background="@drawable/title_bk" >
<!-- 返回按钮图片 -->
<ImageButton
android:id="@+id/btn_back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/btn_back_selector"
android:src="@drawable/btn_back" />
<!-- 一条横的黑色线 -->
<View
android:id="@+id/line0"
android:layout_width="1dp"
android:layout_height="fill_parent"
android:layout_toRightOf="@id/btn_back"
android:background="#aa11264f" />
<!-- 一条横的灰色线 -->
<View
android:layout_width="1px"
android:layout_height="fill_parent"
android:layout_toRightOf="@id/line0"
android:background="#009ad6" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="优酷客户端"
android:textColor="#ffffff"
android:textSize="20sp" />
</RelativeLayout>
<FrameLayout
android:layout_width="fill_parent"
android:layout_height="140dp" >
<android.support.v4.view.ViewPager
android:id="@+id/vp"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="35dp"
android:layout_gravity="bottom"
android:background="#33000000"
android:gravity="center"
android:orientation="vertical" >
<!-- 标题 -->
<TextView
android:id="@+id/tv_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="中国家庭院校园区域名字体现"
android:textColor="#ffffff" />
<!-- 五个点 -->
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="3dp"
android:gravity="center" >
<!-- 此处可以去掉,只是为了演示style的使用
style="@style/dot_style" -被引用
<item name="android:layout_width">5dp</item>
<item name="android:layout_height">5dp</item>
<item name="android:background">@drawable/dot_normal</item>
<item name="android:layout_marginLeft">1.5dp</item>
<item name="android:layout_marginRight">1.5dp</item>
<View
android:id="@+id/v_dot0"
style="@style/dot_style"/>-引用
相 当于
<View
android:id="@+id/v_dot0"
android:layout_width="5dp"
android:layout_height="5dp"
android:layout_marginLeft="1.5dp"
android:layout_marginRight="1.5dp"
android:background="@drawable/dot_normal"/>
-->
<View
android:id="@+id/v_dot0"
style="@style/dot_style"
android:background="@drawable/dot_focused" />
<View
android:id="@+id/v_dot1"
style="@style/dot_style" />
<View
android:id="@+id/v_dot2"
style="@style/dot_style" />
<View
android:id="@+id/v_dot3"
style="@style/dot_style" />
<View
android:id="@+id/v_dot4"
style="@style/dot_style" />
</LinearLayout>
</LinearLayout>
</FrameLayout>
</LinearLayout>values/styles.xml
<resources xmlns:android="http://schemas.android.com/apk/res/android">
<!--
Base application theme, dependent on API level. This theme is replaced
by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
-->
<style name="AppBaseTheme" parent="android:Theme.Light">
<!--
Theme customizations available in newer API levels can go in
res/values-vXX/styles.xml, while customizations related to
backward-compatibility can go here.
-->
</style>
<!-- Application theme. -->
<style name="AppTheme" parent="AppBaseTheme">
<!-- All customizations that are NOT specific to a particular API-level can go here. -->
</style>
<style name="dot_style">
<item name="android:layout_width">5dp</item>
<item name="android:layout_height">5dp</item>
<item name="android:background">@drawable/dot_normal</item>
<item name="android:layout_marginLeft">1.5dp</item>
<item name="android:layout_marginRight">1.5dp</item>
</style>
</resources>
package com.example.myviewpage;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Parcelable;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;
import android.widget.TextView;
/**
* 仿优酷Android客户端图片左右滑到
*
*/
public class MainActivity extends Activity {
private ViewPager viewPager; //android-support-v4中的滑动组件
private List<ImageView> imageViews; //滑动的图片集合
private String[] titles;// 图片标题
private int[] imageResId;//图片ID
private List<View> dots; //图片标题正文的那些点
private TextView tv_title;
private int currentItem=0; //当前图片的索引号
private ScheduledExecutorService scheduledExecutorService;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageResId=new int[]{ R.drawable.a,R.drawable.b,R.drawable.c,R.drawable.d,R.drawable.e};
titles=new String[imageResId.length];
titles[0] = "八神庵,出招了";
titles[1] = "八神庵,草稚京,阿k";
titles[2] = "草稚京";
titles[3] = "97拳王开始封面";
titles[4] = "多人物";
imageViews=new ArrayList<ImageView>();
// 初始化图片资源
for (int i = 0; i < imageResId.length; i++) {
ImageView imageView=new ImageView(this);
imageView.setImageResource(imageResId[i]);
imageView.setScaleType(ScaleType.CENTER_CROP);
imageViews.add(imageView);
}
// 五个点加入到集合
dots=new ArrayList<View>();
dots.add(findViewById(R.id.v_dot0));
dots.add(findViewById(R.id.v_dot1));
dots.add(findViewById(R.id.v_dot2));
dots.add(findViewById(R.id.v_dot3));
dots.add(findViewById(R.id.v_dot4));
tv_title=(TextView) findViewById(R.id.tv_title);
tv_title.setText(titles[0]); // 设置标题文字
viewPager=(ViewPager) findViewById(R.id.vp);
viewPager.setAdapter(new MyAdapter()); // 设置填充viewPager页面的适配器
// 设置一个监听器,当ViewPager中的页面改变时调用
viewPager.setOnPageChangeListener(new MyPageChangeListener());
}
// 开始
@Override
protected void onStart() {
scheduledExecutorService= Executors.newSingleThreadScheduledExecutor();
// 当Activity显示出来后,每两秒钟切换一次图片显示
//scheduledExecutorService.scheduleAtFixedRate(command, initialDelay, period, unit//单位)
scheduledExecutorService.scheduleAtFixedRate(new ScrollTask(), 1, 2, TimeUnit.SECONDS);
super.onStart();
}
// 暂停
@Override
protected void onStop() {
//当Activity不可见的时候停止切换
scheduledExecutorService.shutdown();
super.onStop();
}
///////////////////////////用Handler切换图片////////////////////////////////////////////////
/**
* 换行切换任务-----子线程
*
*/
private class ScrollTask implements Runnable{
public void run() {
synchronized (viewPager) {
System.out.println("currentItem: " + currentItem);
currentItem = (currentItem + 1) % imageViews.size();
handler.obtainMessage().sendToTarget(); // 通过Handler切换图片
}
}
}
// 切换当前显示的图片
@SuppressLint("HandlerLeak")
private Handler handler=new Handler(){
public void handleMessage(android.os.Message msg) {
//接收子线程的消息,处理
viewPager.setCurrentItem(currentItem);// 切换当前显示的图片
};
};
///////////////////////////////////////////////////////////////////////////
/**
* 当ViewPager中页面的状态发生改变时调用
*
*/
private class MyPageChangeListener implements OnPageChangeListener{
private int oldPosition=0;
/**
* 页面滚动状态发生改变的时候触发
*/
@Override
public void onPageScrollStateChanged(int arg0) {
}
/**
* 页面选中的时候触发
*/
// ---注意别用错方法---
@Override
public void onPageSelected(int position) {
currentItem=position;
tv_title.setText(titles[position]);
dots.get(oldPosition).setBackgroundResource(R.drawable.dot_normal);
dots.get(position).setBackgroundResource(R.drawable.dot_focused);
oldPosition=position;
}
/**
* 页面滚动的时候触发
*
*/
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
}
/**
* 填充ViewPager页面的适配器
*
*/
private class MyAdapter extends PagerAdapter{
@Override
public int getCount() {
return imageResId.length;
}
/**
* 从View集合中获取对应索引的元素,并添加到ViewPager中
*/
@Override
public Object instantiateItem(View arg0, int arg1) {
((ViewPager)arg0).addView(imageViews.get(arg1));
return imageViews.get(arg1);
}
//销毁选项
/**
* 从ViewPager中删除集合中对应索引的View对象
*/
@Override
public void destroyItem(View arg0, int arg1, Object arg2) {
((ViewPager)arg0).removeView((View)arg2);
}
/**
* 是否显示的ViewPager页面与instantiateItem返回的对象进行关联
*/
@Override
public boolean isViewFromObject(View arg0, Object arg1) {
return arg0==arg1;
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<!--获取焦点 -->
<item android:state_focused="true" android:drawable="@drawable/btn_top_pressed" ></item>
<!--按下 -->
<item android:state_pressed="true" android:drawable="@drawable/btn_top_pressed" ></item>
<!-- 选择时 -->
<item android:state_selected="true" android:drawable="@drawable/btn_top_pressed" ></item>
<!-- 默认 -->
<item android:drawable="@drawable/title_bk"/>
</selector>
<?xml version="1.0" encoding="utf-8"?>
<!--
形状
-矩形
渐变
-角度
-开始颜色
-结束颜色
-->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:angle="270"
android:endColor="#009ad6"
android:startColor="#11264f"
/>
</shape>
dot_focused.xml
<?xml version="1.0" encoding="utf-8"?>
<!--
形状:椭圆
立体 颜色
圆 半径
-->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="#aaFFFFFF"/>
<corners android:radius="5dp"/>
</shape>
<?xml version="1.0" encoding="utf-8"?>
<!--
形状:椭圆
立体 颜色
圆 半径
-->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="oval">
<solid android:color="#33000000"/>
<corners android:radius="5dip"/>
</shape>
title_bk.xml
<?xml version="1.0" encoding="utf-8"?>
<!--
形状
-矩形
渐变
-角度
-开始颜色
-结束颜色
-->
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<gradient
android:angle="270"
android:startColor="#11264f"
android:endColor="#009ad6"
/>
</shape>
原文：http://blog.csdn.net/u014558889/article/details/43816859