viewpager图片滑动切换（带小点点）

【实例简介】Android 使用ViewPager实现左右循环滑动图片（带小点点）

【实例截图】
【核心代码】//将点点加入到ViewGroup中  
        tips = new ImageView[imgIdArray.length];  
        for(int i=0; i<tips.length; i ){  
            ImageView imageView = new ImageView(this);  
            imageView.setLayoutParams(new LayoutParams(10,10));  
            tips[i] = imageView;  
            if(i == 0){  
                tips[i].setBackgroundResource(R.drawable.page_indicator_focused);  
            }else{  
                tips[i].setBackgroundResource(R.drawable.page_indicator_unfocused);  
            }  
              
            LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(new ViewGroup.LayoutParams(LayoutParams.WRAP_CONTENT,    
                    LayoutParams.WRAP_CONTENT));  
            layoutParams.leftMargin = 5;  
            layoutParams.rightMargin = 5;  
            group.addView(imageView, layoutParams);  
        }  
          
          
        //将图片装载到数组中  
        mImageViews = new ImageView[imgIdArray.length];  
        for(int i=0; i<mImageViews.length; i ){  
            ImageView imageView = new ImageView(this);  
            mImageViews[i] = imageView;  
            imageView.setBackgroundResource(imgIdArray[i]);  
        }  
          
        //设置Adapter  
        viewPager.setAdapter(new MyAdapter());  
        //设置监听，主要是设置点点的背景  
        viewPager.setOnPageChangeListener(this);  
        //设置ViewPager的默认项, 设置为长度的100倍，这样子开始就能往左滑动  
        viewPager.setCurrentItem((mImageViews.length) * 100);  
          
    }