【移动应用开发技术】Adroid中Fragment的简单使用

【移动应用开发技术】Adroid中Fragment的简单使用

下面四个步骤就能创建一个简单的fragment1.扩展Fragmentclass2.在XML或Java中提供显示3.覆盖onCreateView方法4.在activity中使用Fragment如下就是简单的显例创建一个FirstActivityFragment.java文件，扩展Fragmentclasspackage

com.example.liang.login;

import

android.content.Context;

import

android.os.Bundle;

import

android.support.v4.app.Fragment;

import

android.support.v4.view.VelocityTrackerCompat;

import

android.view.LayoutInflater;

import

android.view.View;

import

android.view.ViewGroup;

import

android.widget.TextView;

import

android.widget.Toast;

/**

*

Created

by

liang

on

2016/7/15.

*/

public

class

FirstActivityFragment

extends

Fragment

{

public

FirstActivityFragment(){

}

@Override

public

View

onCreateView(LayoutInflater

inflater,

ViewGroup

container,

Bundle

savedInstanceState){

View

v

=

inflater.inflate(R.layout.fragment_first,

container,

false);

TextView

textView

=

(TextView)v.findViewById(R.id.showFirstFragmentInfo);

final

Context

context

=

this.getActivity();

textView.setOnClickListener(new

View.OnClickListener()

{

@Override

public

void

onClick(View

v)

{

Toast

hello;

hello

=

Toast.makeText(context,"hello",Toast.LENGTH_LONG);

hello.show();

}

});

return

v;

}

@Override

public

void

onCreate(

Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

}

}为Fragment创建一个xml

fragment_first.xml<?xml

version="1.0"

encoding="utf-8"?>

<LinearLayout

xmlns:android="/apk/res/android"

android:orientation="vertical"

android:layout_width="match_parent"

android:layout_height="match_parent">

<TextView

android:layout_width="match_parent"

android:layout_height="match_parent"

android:id="@+id/showFirstFragmentInfo"

android:text="this

is

a

firstFragment"/>

</LinearLayout>并在一个activityview中使用<?xml

version="1.0"

encoding="utf-8"?>

<LinearLayout

xmlns:android="/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical"

android:background="#33FF00">

<fragment

xmlns:android=

"/apk/res/android"

xmlns:tools="/tools"

android:id="@+id/fragment"

android:name="com.example.liang.login.FirstActivityFragment"

tools:layout="@la