Viewpager

来源：互联网发布：心理治疗效果知乎编辑：程序博客网时间：2024/06/05 13:44

   private FragmentManager manager;
   private RadioButton b1;
   private RadioButton b2;
   private RadioButton b3;
   private RadioButton b4;
   private ViewPager viewPager;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       init();
       manager = getSupportFragmentManager();

   }

   private void init() {

       viewPager = (ViewPager) findViewById(R.id.frame);
       b1 = (RadioButton) findViewById(R.id.b1);
       b2 = (RadioButton) findViewById(R.id.b2);
       b3 = (RadioButton) findViewById(R.id.b3);
       b4 = (RadioButton) findViewById(R.id.b4);

       b1.setOnClickListener(this);
       b2.setOnClickListener(this);
       b3.setOnClickListener(this);
       b4.setOnClickListener(this);

       viewPager.setAdapter(new FragmentPagerAdapter(
               getSupportFragmentManager()) {

           @Override
           public int getCount() {
               // TODO Auto-generated method stub
               return 4;
           }

           @Override
           public Fragment getItem(int arg0) {
               // TODO Auto-generated method stub
               Fragment fragment = null;
               switch (arg0) {
               case 0:
                   fragment = new NewsFragment();
                   break;
               case 1:
                   fragment = new RoidFragment();
                   break;
               case 2:
                   fragment = new NewsFragment();
                   break;
               case 3:
                   fragment = new NewsFragment();
                   break;
               default:
                   break;
               }
               return fragment;
           }
       });
       viewPager.setOnPageChangeListener(new OnPageChangeListener() {@Override
           public void onPageSelected(int arg0) {
           // TODO Auto-generated method stub
           switch (arg0) {
           case 0:
               b1.setTextColor(Color.GREEN);
               b2.setTextColor(Color.BLACK);
               b3.setTextColor(Color.BLACK);
               b4.setTextColor(Color.BLACK);
               break;
           case 1:
               b1.setTextColor(Color.BLACK);
               b2.setTextColor(Color.GREEN);
               b3.setTextColor(Color.BLACK);
               b4.setTextColor(Color.BLACK);
               break;
           case 2:
               b1.setTextColor(Color.BLACK);
               b2.setTextColor(Color.BLACK);
               b3.setTextColor(Color.GREEN);
               b4.setTextColor(Color.BLACK);
               break;
           case 3:
               b1.setTextColor(Color.BLACK);
               b2.setTextColor(Color.BLACK);
               b3.setTextColor(Color.BLACK);
               b4.setTextColor(Color.GREEN);
               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

       }
   });
   }

   @Override
   public void onClick(View v) {
       switch (v.getId()) {
       case R.id.b1:
           viewPager.setCurrentItem(0);
           break;
       case R.id.b2:
           viewPager.setCurrentItem(1);
           break;
       case R.id.b3:
           viewPager.setCurrentItem(2);
           break;
       case R.id.b4:
           viewPager.setCurrentItem(3);
           break;
       default:
           break;

       }

   }

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