喵呜~今天来写片段了~
点击App->New-.>Fragment->Fragment(blank)~就会出现啦（Include的两个东西不需要喔，factory methods和Interface feedbacks）
然后呢，就会有新建了Fragment.java和.xml的两个文件，到Fragmen.xml随便写点什么，background,Button,Textview，然后到activity_main.xml,新建个Button，给它个@id/bn
然后到MainActivity.java
これを打ち込むでよいだ
package com.example.fragment; import android.support.v4.app.FragmentManager; import android.support.v4.app.FragmentTransaction; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; public class MainActivity extends AppCompatActivity { boolean status=false; Button bn; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); bn=(Button)findViewById(R.id.bn); bn.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { android.app.FragmentManager fragmentManager=getFragmentManager(); android.app.FragmentTransaction fragmentTransaction=fragmentManager.beginTransaction(); if(!status) { FragmentOne f1=new FragmentOne(); fragmentTransaction.add(R.id.fragment_container,f1); fragmentTransaction.commit(); bn.setText("LOAD SECOND FRAGMENT"); status=true; } else { FragmentTwo f2=new FragmentTwo(); fragmentTransaction.add(R.id.fragment_container,f2); fragmentTransaction.commit(); bn.setText("LOAD FIRST FRAGMENT"); status=false; } } }); } }
