无限轮播

Posted 2020-07-18 glj521

动态生产小圆点

public void setvpdata() {
        if(ivlist!=null){
            ivlist.clear();
        }
        if(ll.getChildCount()>0){
            ll.removeAllViews();
        }
        for (int i = 0; i < vplist.size(); i++) {
            ImageView iv = new ImageView(getActivity());
            if(i==0){
                iv.setImageResource(R.drawable.vp_shap);
            }else{
                iv.setImageResource(R.drawable.vp_shap_normal);
            }
            LayoutParams params = new LayoutParams(10, 10);
            params.setMargins(10, 0, 10, 0);
            ll.addView(iv,params);
            ivlist.add(iv);
        }

public void setData() {

        vp.setAdapter(new ViewPagerAdapter(getActivity(),vplist));
        vp.setCurrentItem(100000);
        
        
        vp.setOnPageChangeListener(new OnPageChangeListener() {
            
            @Override
            public void onPageSelected(int arg0) {
                for (int i = 0; i < ivlist.size(); i++) {
                    if(i==arg0%ivlist.size()){
                        ivlist.get(arg0%ivlist.size()).setImageResource(R.drawable.vp_shap);
                    }else{
                        ivlist.get(i).setImageResource(R.drawable.vp_shap_normal);
                    }
                }
                
            }
            
            @Override
            public void onPageScrolled(int arg0, float arg1, int arg2) {
                // TODO Auto-generated method stub
                
            }
            
            @Override
            public void onPageScrollStateChanged(int arg0) {
                // TODO Auto-generated method stub
                
            }
        });
        
        myhandler.sendEmptyMessageDelayed(1, 2000);
    }

private Handler myhandler = new Handler(){
        public void handleMessage(android.os.Message msg) {
            switch (msg.what) {
            case 1:
                int len = vp.getCurrentItem();
                len++;
                vp.setCurrentItem(len);
                myhandler.sendEmptyMessageDelayed(1, 2000);
                break;

            }
        };
    };