android图片轮播+点击跳转广告页面

Android轮播网络图片+点击跳转广告页面————————–一些新手总是很头疼怎么获取网络图片的url之后让它像一些广告那样轮播起来，点击图片之后跳转到指定网页。效果如下

在布局引用自定义控件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"  android:background="#FFFFFF"  tools:context="com.example.slideshowdemo.MainActivity"  >  <!-- 主题图片 -->  <com.example.sideshowview.SlideShowView
        android:id="@+id/slideshowView"  android:layout_width="fill_parent"  android:layout_height="200dp"  android:layout_centerHorizontal="true" />  </LinearLayout>

MainActivity.java

public class MainActivity extends Activity {private String[] imageUrls = new String[]{  "http://d.hiphotos.baidu.com/image/pic/item/9f2f070828381f30b2bd028fac014c086e06f074.jpg",  "http://h.hiphotos.baidu.com/image/pic/item/2934349b033b5bb55e73afd833d3d539b600bc74.jpg",  "http://b.hiphotos.baidu.com/image/pic/item/ac345982b2b7d0a2bdfa8bbbceef76094b369ae1.jpg",  "http://g.hiphotos.baidu.com/image/pic/item/2e2eb9389b504fc213023f23e0dde71190ef6db3.jpg" } ;private String[] imageUris = new String[]{"http://www.baidu.com","http://www.sina.com.cn","http://www.taobao.com","http://www.tudou.com" };private List<Map<String,String>> imageList = new ArrayList<Map<String,String>>();@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);for (int i = 0; i < 4; i++) {Map<String,String> image_uri = new HashMap<String,String>();image_uri.put("imageUrls", imageUrls[i]);image_uri.put("imageUris", imageUris[i]);imageList.add(image_uri);}SlideShowView view = (SlideShowView) findViewById(R.id.slideshowView); view.setImageUrls(imageList);}}

自定义轮播的详细实现

public class SlideShowView extends FrameLayout implements OnClickListener{  // 使用universal-image-loader插件读取网络图片，需要工程导入universal-image-loader-1.8.6-with-sources.jar  private ImageLoader imageLoader = ImageLoader.getInstance();  //轮播图图片数量  private final static int IMAGE_COUNT = 5;  //自动轮播的时间间隔  private final static int TIME_INTERVAL = 5;  //自动轮播启用开关  private final static boolean isAutoPlay = true;   //自定义轮播图的资源  private List<Map<String,String>> imageUrls;  //放轮播图片的ImageView 的list  private List<ImageView> imageViewsList;  //放圆点的View的list  private List<View> dotViewsList;  private ViewPager viewPager;  //当前轮播页  private int currentItem  = 0;  //定时任务  private ScheduledExecutorService scheduledExecutorService;  private Context context;  //Handler  private Handler handler = new Handler(){  @Override  public void handleMessage(Message msg) {  // TODO Auto-generated method stub  super.handleMessage(msg);  viewPager.setCurrentItem(currentItem);  }  };  public SlideShowView(Context context) {  this(context,null);  // TODO Auto-generated constructor stub  }  public SlideShowView(Context context, AttributeSet attrs) {  this(context, attrs, 0);  // TODO Auto-generated constructor stub  }  public SlideShowView(Context context, AttributeSet attrs, int defStyle) {  super(context, attrs, defStyle);  this.context = context;  initImageLoader(context);  if(isAutoPlay){  startPlay();  }  }  /** * 开始轮播图切换 */  private void startPlay(){  scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();  scheduledExecutorService.scheduleAtFixedRate(new SlideShowTask(), 1, 4, TimeUnit.SECONDS);  }  /** * 停止轮播图切换 */  private void stopPlay(){  scheduledExecutorService.shutdown();  }  /** * 初始化相关Data */  private void initData(){  imageViewsList = new ArrayList<ImageView>();  dotViewsList = new ArrayList<View>();  initUI(context);  }  public void setImageUrls(List<Map<String,String>> imageList){this.imageUrls = imageList;initData();}@Overridepublic void onClick(View v) {// TODO Auto-generated method stubIntent intent = null;Bundle bundle = null;switch (v.getId()) {case 0:intent = new Intent(context,WebViewActivity.class);bundle = new Bundle();bundle.putString("url", imageUrls.get(0).get("imageUris"));intent.putExtras(bundle);context.startActivity(intent);break;case 1:intent = new Intent(context,WebViewActivity.class);bundle = new Bundle();bundle.putString("url", imageUrls.get(1).get("imageUris"));intent.putExtras(bundle);context.startActivity(intent);break;case 2:intent = new Intent(context,WebViewActivity.class);bundle = new Bundle();bundle.putString("url", imageUrls.get(2).get("imageUris"));intent.putExtras(bundle);context.startActivity(intent);break;case 3:intent = new Intent(context,WebViewActivity.class);bundle = new Bundle();bundle.putString("url", imageUrls.get(3).get("imageUris"));intent.putExtras(bundle);context.startActivity(intent);break;}}/** * 初始化Views等UI */  private void initUI(Context context){  if(imageUrls == null || imageUrls.size() == 0)  return;  LayoutInflater.from(context).inflate(R.layout.layout_slideshow, this, true);  LinearLayout dotLayout = (LinearLayout)findViewById(R.id.dotLayout);  dotLayout.removeAllViews();  // 热点个数与图片特殊相等  for (int i = 0; i < imageUrls.size(); i++) {  ImageView view =  new ImageView(context);  view.setId(i);view.setTag(imageUrls.get(i).get("imageUrls"));  if(i==0)//给一个默认图  view.setBackgroundResource(R.drawable.detail_p1);  view.setScaleType(ScaleType.FIT_XY);  view.setOnClickListener(this);imageViewsList.add(view);  ImageView dotView =  new ImageView(context);  LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT);  params.leftMargin = 4;  params.rightMargin = 4;  dotLayout.addView(dotView, params);  dotViewsList.add(dotView);  }  viewPager = (ViewPager) findViewById(R.id.viewPager);  viewPager.setFocusable(true);  viewPager.setAdapter(new MyPagerAdapter());  viewPager.setOnPageChangeListener(new MyPageChangeListener());  }  /** * 填充ViewPager的页面适配器 *  */  private class MyPagerAdapter  extends PagerAdapter{  @Override  public void destroyItem(View container, int position, Object object) {  // TODO Auto-generated method stub  //((ViewPag.er)container).removeView((View)object);  ((ViewPager)container).removeView(imageViewsList.get(position));  }  @Override  public Object instantiateItem(View container, int position) {  ImageView imageView = imageViewsList.get(position);  imageLoader.displayImage(imageView.getTag() + "", imageView);  ((ViewPager)container).addView(imageViewsList.get(position));  return imageViewsList.get(position);  }  @Override  public int getCount() {  // TODO Auto-generated method stub  return imageViewsList.size();  }  @Override  public boolean isViewFromObject(View arg0, Object arg1) {  // TODO Auto-generated method stub  return arg0 == arg1;  }  @Override  public void restoreState(Parcelable arg0, ClassLoader arg1) {  // TODO Auto-generated method stub  }  @Override  public Parcelable saveState() {  // TODO Auto-generated method stub  return null;  }  @Override  public void startUpdate(View arg0) {  // TODO Auto-generated method stub  }  @Override  public void finishUpdate(View arg0) {  // TODO Auto-generated method stub  }  }  /** * ViewPager的监听器 * 当ViewPager中页面的状态发生改变时调用 *  */  private class MyPageChangeListener implements OnPageChangeListener{  boolean isAutoPlay = false;  @Override  public void onPageScrollStateChanged(int arg0) {  // TODO Auto-generated method stub  switch (arg0) {  case 1:// 手势滑动，空闲中  isAutoPlay = false;  break;  case 2:// 界面切换中  isAutoPlay = true;  break;  case 0:// 滑动结束，即切换完毕或者加载完毕  // 当前为最后一张，此时从右向左滑，则切换到第一张  if (viewPager.getCurrentItem() == viewPager.getAdapter().getCount() - 1 && !isAutoPlay) {  viewPager.setCurrentItem(0);  }  // 当前为第一张，此时从左向右滑，则切换到最后一张  else if (viewPager.getCurrentItem() == 0 && !isAutoPlay) {  viewPager.setCurrentItem(viewPager.getAdapter().getCount() - 1);  }  break;  }  }  @Override  public void onPageScrolled(int arg0, float arg1, int arg2) {  // TODO Auto-generated method stub  }  @Override  public void onPageSelected(int pos) {  // TODO Auto-generated method stub  currentItem = pos;  for(int i=0;i < dotViewsList.size();i++){  if(i == pos){  ((View)dotViewsList.get(pos)).setBackgroundResource(R.drawable.compose_guide_check_box_number);  }else {  ((View)dotViewsList.get(i)).setBackgroundResource(R.drawable.compose_guide_check_box_default);  }  }  }  }  /** *执行轮播图切换任务 */  private class SlideShowTask implements Runnable{  @Override  public void run() {  // TODO Auto-generated method stub  synchronized (viewPager) {  currentItem = (currentItem+1)%imageViewsList.size();  handler.obtainMessage().sendToTarget();  }  }  }  /** * 销毁ImageView资源，回收内存 */  private void destoryBitmaps() {  for (int i = 0; i < IMAGE_COUNT; i++) {  ImageView imageView = imageViewsList.get(i);  Drawable drawable = imageView.getDrawable();  if (drawable != null) {  //解除drawable对view的引用  drawable.setCallback(null);  }  }  }  public static void initImageLoader(Context context) {  ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(context).threadPriority(Thread.NORM_PRIORITY - 2).denyCacheImageMultipleSizesInMemory().discCacheFileNameGenerator(new Md5FileNameGenerator()).tasksProcessingOrder(QueueProcessingType.LIFO).writeDebugLogs() .build();  ImageLoader.getInstance().init(config);  }}

带指示器的布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent">  <android.support.v4.view.ViewPager  android:id="@+id/viewPager"  android:layout_width="match_parent"  android:layout_height="match_parent" />  <LinearLayout android:id="@+id/dotLayout"  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:layout_alignParentBottom="true"  android:padding="8dp"  android:gravity="right"  android:orientation="horizontal">  <View  android:id="@+id/v_dot1"  android:layout_width="8dp"  android:layout_height="8dp"  android:background="@drawable/compose_guide_check_box_default" />  <View  android:id="@+id/v_dot2"  android:layout_width="8dp"  android:layout_height="8dp"  android:layout_marginLeft="5dp"  android:background="@drawable/compose_guide_check_box_number" />  </LinearLayout>
</RelativeLayout>

点击广告跳转的web

public class WebViewActivity extends Activity{private WebView mWebView;private TextView mTitle;private ImageButton mBackBtn;private Bundle mBundle;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsetContentView(R.layout.activity_web);super.onCreate(savedInstanceState);mBundle = getIntent().getExtras();initView();}public void initView() {// TODO Auto-generated method stubmWebView = (WebView) findViewById(R.id.web_webview);mWebView.loadUrl(mBundle.getString("url"));mWebView.requestFocusFromTouch();mWebView.getSettings().setCacheMode(WebSettings.LOAD_CACHE_ELSE_NETWORK);/**覆盖调用系统或自带浏览器行为打开网页*/mWebView.setWebViewClient(new WebViewClient(){@Overridepublic boolean shouldOverrideUrlLoading(WebView view, String url) {// TODO Auto-generated method stubview.loadUrl(url);return true;}});/**判断加载过程*/mWebView.setWebChromeClient(new WebChromeClient() {@Overridepublic void onProgressChanged(WebView view, int newProgress) {// TODO Auto-generated method stubif (newProgress == 100) {// 网页加载完成} else {// 加载中}}});initListener();}public void initListener() {// TODO Auto-generated method stub/**加载javascript*/
//      WebSettings mWebSetting = mWebView.getSettings();
//      mWebSetting.setJavaScriptEnabled(true);
//      mWebView.addJavascriptInterface(new Object() {
//            public void clickOnAndroid() {
//                new Handler().post(new Runnable() {
//                    public void run() {
//                      mWebView.loadUrl("javascript:wave()");
//                    }
//                });
//            }
//        }, "demo");/**打开页面时， 自适应屏幕*/WebSettings webSettings =   mWebView .getSettings();       webSettings.setUseWideViewPort(true);//设置此属性，可任意比例缩放webSettings.setLoadWithOverviewMode(true);/**便页面支持缩放*/webSettings.setJavaScriptEnabled(true);  webSettings.setBuiltInZoomControls(true);webSettings.setSupportZoom(true);}}

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