布局代码：
图片工具类：
方法类：
public class ADBean {
private String id;
private String adName;//广告词
private String imgUrl;//网络图片资源
private int imgPath=-1;//本地图片资源
private ImageView mImageView;
public ImageView getmImageView() {
return mImageView;
}
public void setmImageView(ImageView mImageView) {
this.mImageView = mImageView;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getAdName() {
return adName;
}
public void setAdName(String adName) {
this.adName = adName;
}
public String getImgUrl() {
return imgUrl;
}
public void setImgUrl(String imgUrl) {
this.imgUrl = imgUrl;
}
public int getImgPath() {
return imgPath;
}
public void setImgPath(int imgPath) {
this.imgPath = imgPath;
}
}
配置文件：
public class TuTu implements OnItemClickListener {
public static final String TAG = "TuTu";
private ViewPager mViewPager;
private TextView mTextView;
private LinearLayout mLinearLayout;
private MyAdapter myPagerAdapter;
private int lastPoint = 0;
private boolean isRunning = false;
boolean stat = false;
private Timer timer;
private TimerTask timerTask;
private List<ADBean> listADbeans;
private Context mContext;
private ImageUtil imageUtil;
private int newPosition=0;
private long delay=4000;
Handler handler = new Handler() {
public void handleMessage(android.os.Message msg) {
int what = msg.what;
if(what == 0){
if(listADbeans.size()>1){
mViewPager.setCurrentItem(mViewPager.getCurrentItem()+1, true);
}
}
if(what ==1){
myPagerAdapter.notifyImages(listADbeans);
}
};
};
public TuTu(ViewPager mViewPager,TextView mTextView,LinearLayout mLinearLayout,Context mContext,List<ADBean> listADbeans) {
this.mContext = mContext;
this.listADbeans = listADbeans;
this.mViewPager = mViewPager;
this.mTextView = mTextView;
this.mLinearLayout = mLinearLayout;
imageUtil = new ImageUtil(mContext);
//changeViewpagerSpace();
initADViewpager();
}
/**
* 改变viewpager切换速度
*/
private void changeViewpagerSpace() {
try {
Field field = ViewPager.class.getDeclaredField("mScroller");
field.setAccessible(true);
FixedSpeedScroller scroller = new FixedSpeedScroller(mViewPager.getContext(),
new AccelerateInterpolator());
field.set(mViewPager, scroller);
//scroller.setmDuration(200);
} catch (Exception e) {
e.printStackTrace();
}
}
private void initADViewpager() {
for(int i = 0; i < listADbeans.size(); i++){
ImageView view = new ImageView(mContext);
//view.setBackgroundResource(listADbeans.get(i).getImgPath());
// 把图片添加到列表
listADbeans.get(i).setmImageView(view);
// 实例化指示点
ImageView point = new ImageView(mContext);
point.setImageResource(R.drawable.point_seletor);
LayoutParams params = new LayoutParams(dip2px(mContext,6), dip2px(mContext,6));
params.leftMargin = dip2px(mContext,10);
point.setLayoutParams(params);
// 将指示点添加到线性布局里
mLinearLayout.addView(point);
// 设置第一个高亮显示
if (i == 0) {
point.setEnabled(true);
} else {
point.setEnabled(false);
}
}
// 设置适配器
myPagerAdapter = new MyAdapter(listADbeans);
myPagerAdapter.setOnItemClickListener(this);
mViewPager.setAdapter(myPagerAdapter);
// 设置默认文字信息
if(listADbeans!= null && listADbeans.size()>0 && mTextView!= null){
mTextView.setText(listADbeans.get(0).getAdName());
}
int midPosition = Integer.MAX_VALUE / 2 - Integer.MAX_VALUE / 2
% listADbeans.size();
if(listADbeans.size()==1){
midPosition = 0;
}
mViewPager.setCurrentItem(midPosition);
// 设置页面改变监听
mViewPager.setOnPageChangeListener(new OnPageChangeListener() {
private float mPreviousOffset = -1;
private float mPreviousPosition = -1;
/**
* 当某个页面被选中的时候回调
*/
@Override
public void onPageSelected(int position) {
newPosition = position % listADbeans.size();
// 取出广告文字
String msg = listADbeans.get(position % listADbeans.size()).getAdName();
if(mTextView!=null){
mTextView.setText(msg);
}
// 设置对应的页面高亮
mLinearLayout.getChildAt(newPosition).setEnabled(true);
// 是上次的点不显示高亮
mLinearLayout.getChildAt(lastPoint).setEnabled(false);
lastPoint = newPosition;
}
/**
* 当某个页面被滚动的时候回调
*/
@Override
public void onPageScrolled(int position, float positionOffset,
int positionOffsetPixels) {
}
/**
* 当状态发生改变的时候回调, 静止-滚动-静止
*/
@Override
public void onPageScrollStateChanged(int state) {
if(state ==1){
timer.cancel();
//timerTask.cancel();
stat = true;
}
if(state ==0){
if(stat){
startViewPager(delay);
}
stat = false;
}
}
});
isRunning = true;
getNetImages();
}
/**
* 加载网络图片
*/
private void getNetImages() {
for(ADBean ad:listADbeans){
String url = ad.getImgUrl();
if(url ==null || TextUtils.isEmpty(url)){
return;
}
String imageName = url.substring(url.lastIndexOf("/")+1, url.length());
if(!imageName.endsWith(".jpg") && !imageName.endsWith(".png")){
imageName += ".png";
}
String imagePath = ImageUtil.IMAGE_PATH+imageName;
if(url!= null && !TextUtils.isEmpty(url)){
imageUtil.loadImage(imageName, url, true, new ImageCallback() {
@Override
public void onStart(String imageUrl) {
Log.i(TAG, "开始=="+imageUrl);
}
@Override
public void onFailed(String imageUrl) {
Log.i(TAG, "失败=="+imageUrl);
}
@Override
public void loadImage(Bitmap bitmap, String imageUrl) {
Log.i(TAG, imageUrl);
for(ADBean bean :listADbeans){
if(imageUrl.equals(bean.getImgUrl())){
bean.getmImageView().setImageBitmap(bitmap);
}
}
handler.sendEmptyMessage(1);
}
});
}
}
}
/**
* 开启轮播图
* @param delay
*/
public void startViewPager(long delay) {
this.delay = delay;
timer = new Timer();
timerTask = new TimerTask() {
public void run() {
handler.sendEmptyMessage(0);
}
};
timer.schedule(timerTask, delay,delay);
}
public void destroyView() {
if(timer!= null){
timer.cancel();
}
if(timerTask!= null){
timer.cancel();
}
}
public class FixedSpeedScroller extends Scroller {
private int mDuration = 300;
public FixedSpeedScroller(Context context) {
super(context);
}
public FixedSpeedScroller(Context context, Interpolator interpolator) {
super(context, interpolator);
}
@Override
public void startScroll(int startX, int startY, int dx, int dy, int duration) {
// Ignore received duration, use fixed one instead
super.startScroll(startX, startY, dx, dy, mDuration);
}
@Override
public void startScroll(int startX, int startY, int dx, int dy) {
// Ignore received duration, use fixed one instead
super.startScroll(startX, startY, dx, dy, mDuration);
}
public void setmDuration(int time) {
mDuration = time;
}
public int getmDuration() {
return mDuration;
}
}
/**
* 根据手机的分辨率从 dip 的单位 转成为 px(像素)
*/
public static int dip2px(Context context, float dpValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (dpValue * scale + 0.5f);
}
/**
* 根据手机的分辨率从 px(像素) 的单位 转成为 dp
*/
public static int px2dip(Context context, float pxValue) {
final float scale = context.getResources().getDisplayMetrics().density;
return (int) (pxValue / scale + 0.5f);
}
/**
* viewpager的item点击事件
*/
@Override
public void OnItemClick(View view, int position) {
System.out.println(position+"");
}
}
完整代码：
public class MainActivityTwo extends Activity{
private ViewPager ad_viewPage;
/**
* 显示的文字Textview
*/
private TextView tv_msg;
/**
* 添加小圆点的线性布局
*/
private LinearLayout ll_dian;
/**
* 轮播图对象列表
*/
List<ADBean> listADbeans;
/**
* 本地图片资源
*/
private int[] ids = { R.drawable.one, R.drawable.two, R.drawable.three,
R.drawable.fore, R.drawable.five };
/**
* 显示文字
*/
private String[] des = { "1111111", "22222222", "3333333", "4444444444","55555555555" };
/**
* 网络资源
*/
private String[] urls = { "http://a.hiphotos.baidu.com/image/pic/item/0bd162d9f2d3572ce98282e18e13632762d0c3af.jpg",
"http://d.hiphotos.baidu.com/image/pic/item/1b4c510fd9f9d72aebede7a1d62a2834359bbb85.jpg",
"http://h.hiphotos.baidu.com/image/pic/item/91ef76c6a7efce1be2f4f15cad51f3deb58f654c.jpg",
"http://h.hiphotos.baidu.com/image/w%3D230/sign=3e9ec55457fbb2fb342b5f117f4b2043/e850352ac65c1038343303cbb0119313b07e896e.jpg",
"http://e.hiphotos.baidu.com/image/pic/item/d53f8794a4c27d1e3625e52d18d5ad6edcc438dc.jpg" };
private TuTu tu;
private Context mContext;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mContext = this;
initView();
initAD();
}
/**
* 初始化轮播图
*/
private void initAD() {
listADbeans = new ArrayList<ADBean>();
for(int i =0;i<2;i++){
ADBean bean = new ADBean();
bean.setAdName(des[i]);
bean.setId(i+"");
bean.setImgUrl(urls[i]);
//bean.setImgPath(ids[i]);
listADbeans.add(bean);
}
tu = new TuTu(ad_viewPage, tv_msg, ll_dian, mContext, listADbeans);
tu.startViewPager(4000);//动态设置滑动间隔，并且开启轮播图
}
/**
* 初始化布局
*/
private void initView() {
ad_viewPage = (ViewPager)findViewById(R.id.ad_viewPage);
tv_msg = (TextView)findViewById(R.id.tv_msg);
ll_dian = (LinearLayout)findViewById(R.id.ll_dian);
}
/**
* 销毁轮播图
*/
@Override
protected void onDestroy() { }
}
设置适配器：
public class MyAdapter extends PagerAdapter {
List<ADBean> listADbeans=null;
OnItemClickListener onItemClickListener;
public MyAdapter(List<ADBean> listADbeans) {
this.listADbeans = listADbeans;
}
public int getCount() {
//把这个条数数值很大很大
if(listADbeans != null && listADbeans.size()==1){
return 1;
}else{
return Integer.MAX_VALUE;
}
}
/**相当于getView:实例化每个页面的View和添加View
* container:ViewPage 容器
* position 位置
*/
public Object instantiateItem(ViewGroup container, final int position) {
//根据位置取出某一个View
ImageView view = null;
if(listADbeans.size()==1){
view = listADbeans.get(0).getmImageView();
if(listADbeans.get(0).getImgPath() != -1){
view.setBackgroundResource(listADbeans.get(0).getImgPath());
}
}else{
view = listADbeans.get(position%listADbeans.size()).getmImageView();
if(listADbeans.get(position%listADbeans.size()).getImgPath() != -1){
view.setBackgroundResource(listADbeans.get(position%listADbeans.size()).getImgPath());
}
ViewGroup parent = (ViewGroup) view.getParent();
if (parent != null ) {
//parent.removeView(view);
container.removeView(view);
}
}
view.setScaleType(ScaleType.FIT_XY);
//添加到容器
container.addView(view);
/**
* 添加点击事件
*/
view.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
onItemClickListener.OnItemClick(v, position%listADbeans.size());
}
});
return view;//返回实例化的View
}
/**
* 判断view和instantiateItem返回的对象是否一样
* Object : 时instantiateItem返回的对象
*/
public boolean isViewFromObject(View view, Object object) {
if(view == object){
return true;
}else{
return false;
}
}
/**|
* 实例化两张图片,最多只能装三张图片
*/
public void destroyItem(ViewGroup container, int position, Object object) {
//释放资源,
//container.removeView((View) object);
}
public synchronized void notifyImages(List<ADBean> listADbeans){
this.listADbeans = listADbeans;
notifyDataSetChanged();
}
public interface OnItemClickListener{
void OnItemClick(View view,int position);
}
public void setOnItemClickListener(OnItemClickListener onItemClickListener){
this.onItemClickListener = onItemClickListener;
}
}
线程管理：
/**
* 线程管理器
**/
public class ThreadPoolManager {
private ExecutorService service;
private ThreadPoolManager(){
int num = Runtime.getRuntime().availableProcessors();
service = Executors.newFixedThreadPool(num);
}
private static final ThreadPoolManager manager= new ThreadPoolManager();
public static ThreadPoolManager getInstance(){
return manager;
}
public void addTask(Runnable runnable){
service.execute(runnable);
}
}