也就是这个样子，几个图片可以互换 其中主要的空间用到了Viewpager
public class Whatsnew extends Activity { private ViewPager mViewPager; private ImageView mPage0; private ImageView mPage1; private ImageView mPage2; private ImageView mPage3; private ImageView mPage4; private ImageView mPage5; private int currIndex = 0; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.whatsnew_viewpager); mViewPager = (ViewPager)findViewById(R.id.whatsnew_viewpager); mViewPager.setOnPageChangeListener(new MyOnPageChangeListener()); mPage0 = (ImageView)findViewById(R.id.page0); mPage1 = (ImageView)findViewById(R.id.page1); mPage2 = (ImageView)findViewById(R.id.page2); mPage3 = (ImageView)findViewById(R.id.page3); mPage4 = (ImageView)findViewById(R.id.page4); mPage5 = (ImageView)findViewById(R.id.page5); //将要分页显示的View装入数组中 LayoutInflater mLi = LayoutInflater.from(this); View view1 = mLi.inflate(R.layout.whats1, null); View view2 = mLi.inflate(R.layout.whats2, null); View view3 = mLi.inflate(R.layout.whats3, null); View view4 = mLi.inflate(R.layout.whats4, null); View view5 = mLi.inflate(R.layout.whats5, null); View view6 = mLi.inflate(R.layout.whats6, null); //每个页面的view数据 final ArrayList<View> views = new ArrayList<View>(); views.add(view1); views.add(view2); views.add(view3); views.add(view4); views.add(view5); views.add(view6); //填充ViewPager的数据适配器 PagerAdapter mPagerAdapter = new PagerAdapter() { @Override public boolean isViewFromObject(View arg0, Object arg1) { return arg0 == arg1; } @Override //返回用view的数量，也就是几个页面构成 public int getCount() { return views.size(); } @Override public void destroyItem(View container, int position, Object object) { //删除指定位置的View ((ViewPager)container).removeView(views.get(position)); } @Override public Object instantiateItem(View container, int position) { ((ViewPager)container).addView(views.get(position)); return views.get(position); //在指定位置添加页面 } }; mViewPager.setAdapter(mPagerAdapter); } //mViewPager的监听代码 public class MyOnPageChangeListener implements OnPageChangeListener { @Override public void onPageSelected(int arg0) {//这个方法将一个新的页面选中状态 switch (arg0) { case 0: mPage0.setImageDrawable(getResources().getDrawable(R.drawable.page_now)); mPage1.setImageDrawable(getResources().getDrawable(R.drawable.page)); break; case 1: mPage1.setImageDrawable(getResources().getDrawable(R.drawable.page_now)); mPage0.setImageDrawable(getResources().getDrawable(R.drawable.page)); mPage2.setImageDrawable(getResources().getDrawable(R.drawable.page)); break; case 2: mPage2.setImageDrawable(getResources().getDrawable(R.drawable.page_now)); mPage1.setImageDrawable(getResources().getDrawable(R.drawable.page)); mPage3.setImageDrawable(getResources().getDrawable(R.drawable.page)); break; case 3: mPage3.setImageDrawable(getResources().getDrawable(R.drawable.page_now)); mPage4.setImageDrawable(getResources().getDrawable(R.drawable.page)); mPage2.setImageDrawable(getResources().getDrawable(R.drawable.page)); break; case 4: mPage4.setImageDrawable(getResources().getDrawable(R.drawable.page_now)); mPage3.setImageDrawable(getResources().getDrawable(R.drawable.page)); mPage5.setImageDrawable(getResources().getDrawable(R.drawable.page)); break; case 5: mPage5.setImageDrawable(getResources().getDrawable(R.drawable.page_now)); mPage4.setImageDrawable(getResources().getDrawable(R.drawable.page)); break; } currIndex = arg0; //animation.setFillAfter(true);// True:图片停在动画结束位置 //animation.setDuration(300); //mPageImg.startAnimation(animation); } @Override public void onPageScrolled(int arg0, float arg1, int arg2) { } @Override public void onPageScrollStateChanged(int arg0) { } } }
其中开始设置的imageview mpage0~mapage5是代表的下面的点的图片
后面的layout whats是真正界面的view，其中还用到了泛型和集合的概念，这是java中的语言，不过多解释了，强调下pagerAdaper的复写，添加集合的方式就是如此，可以记住，以后使用就方便了，一些方法的注释来自SDK docs解释文件中
LayoutInflater这个类是实例化一个布局XML文件到相应的视图对象。但它却永远不会直接使用。相反,使用getLayoutInflater()或getSystemService(字符串)来检索一个标准LayoutInflater实例已经连接到当前上下文,正确配置的设备上运行。
Inflate的意思是添加资源到指定的activity