android实现点击按钮切换不同的fragment布局

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

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();
 }
}
}

大家需要创建5个fragment，还有对应的xml文件，这里我给大家展示我创建的MyFragment4.java：

package com.example.xh.twostylefragment;

import android.os.Bundle;
 import android.support.v4.app.Fragment;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;

/**
* Created by Administrator on 2016/7/8.
*/
public class MyFragment4 extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 View view = LayoutInflater.from(getActivity()).inflate(R.layout.shoppingcar,container,false);//用view保存shoppingcar.xml布局，大家可以
 return view;                     //自己创建一个xml.
}

}

差不多就是这样的了，有问题大家可以提出来。

来源：https://blog.csdn.net/qq_35595164/article/details/52193086