轮播图

轮播图    

	Pageadapter pageadapter = new Pageadapter();
        ViewPager.setAdapter(pageadapter);
        ViewPager.setCurrentItem(list.size() * 10000);
        
        ViewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
			
			@Override
			public void onPageSelected(int arg0) {
				// TODO Auto-generated method stub
				if (arg0 % list.size()  == list.size() -1) {
					button.setVisibility(View.VISIBLE);
				}
				switch (arg0 % list.size()) {
				case 0:
					radioGroup.check(R.id.but01);
					break;
				case 1:
					radioGroup.check(R.id.but02);
					break;
				case 2:
					radioGroup.check(R.id.but03);
					break;
				case 3:
					radioGroup.check(R.id.but04);
					break;
				case 4:
					radioGroup.check(R.id.but05);
					break;

				default:
					break;
				}
				
			}
			
			@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
				
			}
		});
        button.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				Intent intent = new Intent(MainActivity.this,second.class);
				startActivity(intent);
			}
		});
        intidata();
    }
    	
    private void intidata() {
		// TODO Auto-generated method stub
		Timer timer = new Timer();
		 TimerTask timerTask  = new TimerTask() {
			
			@Override
			public void run() {
				// TODO Auto-generated method stub
				handler.sendEmptyMessage(0);
			}
		};
		timer.schedule(timerTask,2000 , 2000);
		
	}
    
    Handler  handler = new Handler(){
    	public void handleMessage(android.os.Message msg) {
    		int currentItem = ViewPager.getCurrentItem();
    		currentItem++;
    		ViewPager.setCurrentItem(currentItem);
    	};
    };