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来源：互联网发布：vb中对象的属性编辑：程序博客网时间：2024/05/20 11:52
package com.test.main.myframe;import android.app.Activity;import android.app.FragmentManager;import android.app.FragmentTransaction;import android.graphics.Color;import android.os.Bundle;import android.view.View;import android.widget.TextView;public class MainActivity extends Activity implements View.OnClickListener{    private TextView tte1;    private TextView tte2;    private TextView tte3;    private TextView tte4;    private FragmentManager af;    private FirstFragment firstFragment;    private SecondFragment secondFragment;    private ThreeFragment threeFragment;    private FourFragment fourFragment;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        init();        af=getFragmentManager();        setTabSelection(0);    }    private void setTabSelection(int index) {        resetTab();        FragmentTransaction beginTransaction = af.beginTransaction();        hideFragment(beginTransaction);        switch (index){            case 0:                tte1.setTextColor(Color.BLUE);                if(firstFragment==null){                    firstFragment=new FirstFragment();                    beginTransaction.add(R.id.main_frame,firstFragment);                }else {                    beginTransaction.show(firstFragment);                }                break;            case 1:                tte2.setTextColor(Color.BLUE);                if(secondFragment==null){                    secondFragment=new SecondFragment();                    beginTransaction.add(R.id.main_frame,secondFragment);                }else {                    beginTransaction.show(secondFragment);                }                break;            case 2:                tte3.setTextColor(Color.BLUE);                if(threeFragment==null){                    threeFragment=new ThreeFragment();                    beginTransaction.add(R.id.main_frame,threeFragment);                }else {                    beginTransaction.show(threeFragment);                }                break;            case 3:                tte4.setTextColor(Color.BLUE);                if(fourFragment==null){                    fourFragment=new FourFragment();                    beginTransaction.add(R.id.main_frame,fourFragment);                }else {                    beginTransaction.show(fourFragment);                }                break;        }        beginTransaction.commit();    }    private void hideFragment(FragmentTransaction beginTransaction) {        if(firstFragment!=null){            beginTransaction.hide(firstFragment);        }        if(secondFragment!=null){            beginTransaction.hide(secondFragment);        }        if(threeFragment!=null){            beginTransaction.hide(threeFragment);        }        if(fourFragment!=null){            beginTransaction.hide(fourFragment);        }    }    private void resetTab() {        tte1.setTextColor(Color.GREEN);        tte2.setTextColor(Color.GREEN);        tte3.setTextColor(Color.GREEN);        tte4.setTextColor(Color.GREEN);    }    private void init() {        tte1=(TextView)findViewById(R.id.tte1);        tte2=(TextView)findViewById(R.id.tte2);        tte3=(TextView)findViewById(R.id.tte3);        tte4=(TextView)findViewById(R.id.tte4);        tte1.setOnClickListener(this);        tte2.setOnClickListener(this);        tte3.setOnClickListener(this);        tte4.setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()){            case R.id.tte1:                setTabSelection(0);                break;            case R.id.tte2:                setTabSelection(1);                break;            case R.id.tte3:                setTabSelection(2);                break;            case R.id.tte4:                setTabSelection(3);                break;        }    }}
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