官方教程 https://developer.android.com/training/basics/fragments/index.html
使用as新建两个空的fragment
新建一个activity用于显示fragment
package com.example.h.learn.activity;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.FragmentTransaction;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import com.example.h.learn.R;
import com.example.h.learn.fragment.BlankFragment1;
import com.example.h.learn.fragment.BlankFragment2;
public class FragmentActivity extends AppCompatActivity implements View.OnClickListener, BlankFragment1.OnFragmentInteractionListener, BlankFragment2.OnFragmentInteractionListener{
//必须实现此方法,否则会报错
@Override
public void onFragmentInteraction(Uri uri) {
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fragment);
int[] ids = new int[]{R.id.btn_fragment1, R.id.btn_fragment2};
for (int id:ids
) {
findViewById(id).setOnClickListener(this);
}
if(findViewById(R.id.fragment_layout)!=null){
//避免fragment重叠
if(savedInstanceState !=null){
return;
}
//第一次创建,默认显示第一个fragment
BlankFragment1 itemFragment = new BlankFragment1();
//传参数
itemFragment.setArguments(getIntent().getExtras());
getSupportFragmentManager().beginTransaction().add(R.id.fragment_layout, itemFragment).commit();
}
}
@Override
public void onClick(View v) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
switch (v.getId()){
//显示第一个fragment
case R.id.btn_fragment1:
transaction.replace(R.id.fragment_layout, new BlankFragment1());
transaction.addToBackStack(null);
transaction.commit();
break;
//显示第二个fragment
case R.id.btn_fragment2:
transaction.replace(R.id.fragment_layout, new BlankFragment2());
transaction.addToBackStack(null);
transaction.commit();
break;
default:
}
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.h.learn.activity.FragmentActivity">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:text="fragment1"
android:id="@+id/btn_fragment1"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:text="fragment2"
android:id="@+id/btn_fragment2"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
<FrameLayout
android:id="@+id/fragment_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"></FrameLayout>
</LinearLayout>
运行效果
fragment传参 http://dditblog.com/itshare_296.html