linearlayout实现fragment切换

来源：互联网发布：淘宝皇冠多少信誉编辑：程序博客网时间：2024/05/22 14:12

在布局文件中，使用linearlayout实现fragment的容器

public class MainfragmentActivity extends FragmentActivity{

//   Discoverfragment discover;
//   Mefragment me;
   Sportfragment sport;
//
//   private Button btn1;
//   private Button btn2;
//   private Button btn3;

   int currentfragmentIndex=0;
   int clickButtonIndex=0;
   Button[] btnArray=new Button[3];

   Fragment[] fragment=new Fragment[3];
   @Override
   protected void onCreate(Bundle arg0) {
       // TODO Auto-generated method stub
       super.onCreate(arg0);
       try {
           setContentView(R.layout.main_fragment);
           setview();
           setlistener();
           btnArray[0].setSelected(true);
           sport=new Sportfragment();
           FragmentManager manner=getSupportFragmentManager();
           FragmentTransaction action=manner.beginTransaction();

           action.add(R.id.fragment_container, sport);

           action.commit();

           fragment[0]=sport;
           fragment[1]=new Discoverfragment();
           fragment[2]=new Mefragment();

       } catch (Exception e) {
           e.printStackTrace();
       }
   }
   private void setlistener() {
       Myclicklistener my=new Myclicklistener();
       for (Button btn:btnArray) {
           btn.setOnClickListener(my);
       }

   }
   private void setview() {
       btnArray[0]=(Button) findViewById(R.id.btn_main_fragment_sport);
       btnArray[1]=(Button) findViewById(R.id.btn_main_fragment_discover);
       btnArray[2]=(Button) findViewById(R.id.btn_main_fragment_me);

   }

   class Myclicklistener implements OnClickListener{

       @Override
       public void onClick(View v) {
           switch (v.getId()) {
           case R.id.btn_main_fragment_sport:
               clickButtonIndex=0;

               break;
           case R.id.btn_main_fragment_discover:
               clickButtonIndex=1;
               break;
           case R.id.btn_main_fragment_me:
               clickButtonIndex=2;
               break;

           }
           if (clickButtonIndex!=currentfragmentIndex) {
               FragmentManager manner=getSupportFragmentManager();
               FragmentTransaction action=manner.beginTransaction();

               action.hide(fragment[currentfragmentIndex]);

               Fragment showfragment=fragment[clickButtonIndex];
               if (!showfragment.isAdded()) {
                   action.add(R.id.fragment_container, showfragment);
               }
               action.show(showfragment);
               action.commit();
           }
           btnArray[currentfragmentIndex].setSelected(false);
           btnArray[clickButtonIndex].setSelected(true);
           currentfragmentIndex=clickButtonIndex;
       }

   }

}

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