Android动态添加Fragment

知识养成了思想,思想同时又在融化知识。这篇文章主要讲述Android动态添加Fragment相关的知识，希望能为你提供帮助。
效果图如下:

文章图片

项目结构图如下:

文章图片

Fragment1:

package com.demo.dongtaifragment; import android.app.Fragment; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class Fragment2 extends Fragment {//显示faragemnt1 自己要显示的内容 @Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {View view = inflater.inflate(R.layout.fragemnt2, null); return view; } }

Fragment2:

package com.demo.dongtaifragment; import android.app.Fragment; import android.os.Bundle; import android.support.annotation.NonNull; import android.support.annotation.Nullable; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; public class Fragment2 extends Fragment {//显示faragemnt1 自己要显示的内容 @Nullable @Override public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {View view = inflater.inflate(R.layout.fragemnt2, null); return view; } }

【Android动态添加Fragment】MainActivity:

package com.demo.dongtaifragment; import android.app.FragmentManager; import android.app.FragmentTransaction; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.WindowManager; public class MainActivity extends AppCompatActivity {@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //[1]获取手机的分辨率 WindowManager wm = (WindowManager) getSystemService(WINDOW_SERVICE); int width = wm.getDefaultDisplay().getWidth(); int height = wm.getDefaultDisplay().getHeight(); FragmentManager fragmentManager= getFragmentManager(); //开启事务 FragmentTransaction beginTransaction = fragmentManager.beginTransaction(); Fragment1 fragment1 = new Fragment1(); //判断横竖 if(height> width){ //说明是竖屏加载一个fragment beginTransaction.replace(android.R.id.content, new Fragment1()); }else{ //说明是横屏beginTransaction.replace(android.R.id.content, new Fragment2()); }//最后一步记得commit beginTransaction.commit(); } }

fragemnt1.xml:

< ?xml version="1.0" encoding="utf-8"?> < android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> < TextView android:layout_width="wrap_content" android:layout_height="match_parent" android:text="我是fragment1竖屏的内容" android:textSize="20sp" /> < /android.support.constraint.ConstraintLayout>

fragemnt2.xml:

< ?xml version="1.0" encoding="utf-8"?> < android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> < TextView android:layout_width="wrap_content" android:layout_height="match_parent" android:text="我是fragment2横屏的内容" android:textSize="30sp"/> < /android.support.constraint.ConstraintLayout>