Android_动态加载viewpager携带的小圆点

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 第一xml中:

1:dot_focuable

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="rectangle" >    <solid android:color="#ff0000" />      <corners android:radius="5dip" /></shape>

2:dot_normal

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android"    android:shape="rectangle" >    <solid android:color="#0000cc" />    <corners android:radius="5dip" /></shape>

第二:代码

    ImageView iv;    List<ImageView> ivList;    LinearLayout ll = (LinearLayout) findViewById(R.id.ll);/** * viewpager的滑动监听事件 */private void ViewPagerListener() {    vp.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {        @Override        public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {        }        @Override        public void onPageSelected(int position) {            for (int x = 0; x < ivList.size(); x++) {                if (position % adlist.size() == x) {                    //证明点和图片是对应的，应该点是变红的                    ivList.get(position % adlist.size()).setImageResource(R.drawable.dot_focuable);                } else {                    ivList.get(x).setImageResource(R.drawable.dot_normal);                }            }        }        @Override        public void onPageScrollStateChanged(int state) {        }    });}/** * 初使化点的 */private void initDot() {    ivList = new ArrayList<>();    if (ivList != null) {        ivList.clear();    }    for (int x = 0; x < adlist.size(); x++) {        iv = new ImageView(MainActivity.this);        if (x == 0) {            //第一张，让其圆点进行选中状态            iv.setImageResource(R.drawable.dot_focuable);        } else {            iv.setImageResource(R.drawable.dot_normal);            //其它的都不选中        }        LinearLayout.LayoutParams parmes = new LinearLayout.LayoutParams(20, 20);        //设置两个点之间的距离        parmes.setMargins(10, 0, 10, 0);        ll.addView(iv, parmes);        ivList.add(iv);    }}

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