Fragemnt和TextView的交互（TextView在LinearLayout中）

import android.support.v4.app.Fragment;import android.support.v4.app.FragmentActivity;import android.os.Bundle;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentTransaction;import android.view.View;import android.widget.LinearLayout;import android.widget.TextView;

import java.util.ArrayList;import java.util.List;

public class MainActivity extends FragmentActivity { private LinearLayout mlinearlayout;    //装载TextView的布局    private FragmentManager mFragmentManager;    private List<Fragment> mfragmentList;   //fragment的集合    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //初始化        init();        //开启事务   将所有Fragment加入布局        mFragmentManager = getSupportFragmentManager();        FragmentTransaction transaction = mFragmentManager.beginTransaction();        //处理事务        XinWen_Fragment xinWenFragment= new XinWen_Fragment();        mfragmentList.add(xinWenFragment);        transaction.add(R.id.fragment_layout, xinWenFragment, "XINWEN");        transaction.hide(xinWenFragment);

        TuPian_Fragment tuPinFragment = new TuPin_Fragment();        mfragmentList.add(tuPinFragment);        transaction.add(R.id.fragment_layout, tuPinFragment, "TUPIN");        transaction.hide(tuPinFragment);

        ShiPin_Fragment shiPinFragment = new ShiPin_Fragment();        mfragmentList.add(shiPinFragment);        transaction.add(R.id.fragment_layout, shiPinFragment, "SHIPIN");        transaction.hide(shiPinFragment);

        WoDe_Fragment woDeFragment = new WoDe_Fragment();        mfragmentList.add(woDeFragment);        transaction.add(R.id.fragment_layout,woDeFragment,"WODE");        transaction.hide(woDeFragment);        //展示一个Fragment        transaction.show(xinWenFragment);        //提交事务        transaction.commit();

    }   public void init(){       mlinearlayout = (LinearLayout)findViewById(R.id.main_layout);       mfragmentList = new ArrayList<Fragment>();       //设置默认选中的TextView       mlinearlayout.getChildAt(0).setSelected(true);       //外层for循环是为view添加标签       for (int i=0;i<4;i++){           TextView view = (TextView) mlinearlayout.getChildAt(i);           view.setTag(i);           view.setOnClickListener(new View.OnClickListener() {               @Override               public void onClick(View v) {                   int index= (int) v.getTag();                 FragmentTransaction fragmentTransaction = mFragmentManager.beginTransaction();               //内层循环是把Fragment和TextView交互起来                   for(int i=0;i<4;i++){                       if (i==index){                           mlinearlayout.getChildAt(i).setSelected(true);                           fragmentTransaction.show(mfragmentList.get(i)) ;                       }else{                           mlinearlayout.getChildAt(i).setSelected(false);                           fragmentTransaction.hide(mfragmentList.get(i)) ;                       }

                   }                   fragmentTransaction.commit();               }           });       }   }}