android实现点击按钮切换不同的fragment布局
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2022-05-16 12:15:50
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...
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。
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
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