本文实例为大家分享了android点击按钮切换不同布局的具体代码，供大家参考，具体内容如下

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先上效果图：

如图所示，实现点击下面的按钮切换不同的fragment布局；

不说了，先上主MainActivity代码：

MainActivity.java:

package com.example.xh.twostylefragment;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
 
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
  //定义5个fragment
  private MyFragment f1;
  private MyFragment2 f2;
  private MyFragment3 f3;
  private MyFragment4 f4;
  private MyFragment5 f5;
  //定义底部5个按钮
  private Button foot1;
  private Button foot2;
  private Button foot3;
  private Button foot4;
  private Button foot5;
  int i = 0;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
 
    foot1 = (Button) findViewById(R.id.btn1);//注册按钮
    foot2 = (Button) findViewById(R.id.btn2);
    foot3 = (Button) findViewById(R.id.btn3);
    foot4 = (Button) findViewById(R.id.btn4);
    foot5 = (Button) findViewById(R.id.btn5);
    foot1.setOnClickListener(this);//对按钮设置监听
    foot2.setOnClickListener(this);
    foot3.setOnClickListener(this);
    foot4.setOnClickListener(this);
    foot5.setOnClickListener(this);
    //第一次初始化首页默认显示第一个fragment
    initFragment1();
  }
 
  //显示第一个fragment
  private void initFragment1(){
    //开启事务，fragment的控制是由事务来实现的
    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
 
    //第一种方式（add），初始化fragment并添加到事务中，如果为null就new一个
    if(f1 == null){
      f1 = new MyFragment();
      transaction.add(R.id.main_frame_layout, f1);
    }
    //隐藏所有fragment
    hideFragment(transaction);
    //显示需要显示的fragment
    transaction.show(f1);
 
    //第二种方式(replace)，初始化fragment
//    if(f1 == null){
//      f1 = new MyFragment("首页");
//    }
//    transaction.replace(R.id.main_frame_layout, f1);
 
    //提交事务
    transaction.commit();
  }
 
  //显示第二个fragment
  private void initFragment2(){
    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
 
    if(f2 == null){
      f2 = new MyFragment2();
      transaction.add(R.id.main_frame_layout,f2);
    }
    hideFragment(transaction);
    transaction.show(f2);
 
//    if(f2 == null) {
//      f2 = new MyFragment("分类");
//    }
//    transaction.replace(R.id.main_frame_layout, f2);
 
    transaction.commit();
  }
 
  //显示第三个fragment
  private void initFragment3(){
    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
 
    if(f3 == null){
      f3 = new MyFragment3();
      transaction.add(R.id.main_frame_layout,f3);
    }
    hideFragment(transaction);
    transaction.show(f3);
 
//    if(f3 == null) {
//      f3 = new MyFragment("发现");
//    }
//    transaction.replace(R.id.main_frame_layout, f3);
 
    transaction.commit();
  }
  private void initFragment4(){
    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
 
    if(f4 == null){
      f4 = new MyFragment4();
      transaction.add(R.id.main_frame_layout,f4);
    }
    hideFragment(transaction);
    transaction.show(f4);
 
//    if(f4 == null) {
//      f4 = new MyFragment("购物车");
//    }
//    transaction.replace(R.id.main_frame_layout, f4);
 
    transaction.commit();
  }
  private void initFragment5(){
    FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
 
    if(f5 == null){
      f5 = new MyFragment5();
      transaction.add(R.id.main_frame_layout,f5);
    }
    hideFragment(transaction);
    transaction.show(f5);
 
//    if(f5 == null) {
//      f5 = new MyFragment("我的);
//    }
//    transaction.replace(R.id.main_frame_layout, f5);
 
    transaction.commit();
  }
 
  //隐藏所有的fragment
  private void hideFragment(FragmentTransaction transaction){
    if(f1 != null){
      transaction.hide(f1);
    }
    if(f2 != null){
      transaction.hide(f2);
    }
    if(f3 != null){
      transaction.hide(f3);
    }
    if(f4 != null){
      transaction.hide(f4);
    }
    if(f5 != null){
      transaction.hide(f5);
    }
  }
 
  @Override
  public void onClick(View v) {//点击哪个按钮就显示哪个fragment;
    if(v == foot1){
      initFragment1();
    }else if(v == foot2){
      initFragment2();
    }else if(v == foot3){
      initFragment3();
    }else if(v == foot4){
      initFragment4();
    }else if(v == foot5){
      initFragment5();
    }
  }
}

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