fragment的使用

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head.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="wrap_content"    android:orientation="horizontal" >    <ImageView         android:id="@+id/head_iv"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@drawable/ic_launcher"/>    <TextView        android:id="@+id/head_tv"        android:layout_width="wrap_content"        android:layout_height="match_parent"android:gravity="center"android:text="这是head"/></LinearLayout>

body.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <TextView         android:id="@+id/body_tv"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:text="这是body"        android:gravity="center"/></LinearLayout>

低级的方法：项目名为Fragment

HeadFragment.java

package com.example.fragment;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.Toast;public class HeadFragment extends Fragment{private ImageView iv;@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {View view=inflater.inflate(R.layout.head, container, false);iv=(ImageView) view.findViewById(R.id.head_iv);iv.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Toast.makeText(getActivity(), "Click head", 1000).show();}});return view;}}

BodyFragment.java

package com.example.fragment;import android.os.Bundle;import android.support.v4.app.Fragment;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.Toast;public class BodyFragment extends Fragment{@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {View view=inflater.inflate(R.layout.body, container, false);return view;}}

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <LinearLayout         android:id="@+id/main_head"        android:layout_width="match_parent"        android:layout_height="wrap_content">            </LinearLayout>    <LinearLayout         android:id="@+id/main_body"        android:layout_width="match_parent"        android:layout_height="match_parent">            </LinearLayout></LinearLayout>

MainActivity.java

package com.example.fragment;import android.os.Bundle;import android.support.v4.app.FragmentActivity;import android.support.v4.app.FragmentManager;import android.support.v4.app.FragmentTransaction;import android.view.Window;import android.widget.LinearLayout;public class MainActivity extends FragmentActivity {private LinearLayout mainHead, mainBody;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);// 设置没有标题栏，必须写在setContentview之前this.requestWindowFeature(Window.FEATURE_NO_TITLE);setContentView(R.layout.activity_main);FragmentManager fm = getSupportFragmentManager();// 开启事务FragmentTransaction ft = fm.beginTransaction();ft.add(R.id.main_head, new HeadFragment());ft.add(R.id.main_body, new BodyFragment());ft.commit();}}

高级的方法：项目名为Fragment

HeadFragment.java

package com.example.fragment;import android.app.Fragment;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.Toast;public class HeadFragment extends Fragment{private ImageView iv;@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {View view=inflater.inflate(R.layout.head, container, false);iv=(ImageView) view.findViewById(R.id.head_iv);iv.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {Toast.makeText(getActivity(), "Click head", 1000).show();}});return view;}}

BodyFragment.java

package com.example.fragment;import android.app.Fragment;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;public class BodyFragment extends Fragment{@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState) {View view=inflater.inflate(R.layout.body, container, false);return view;}}

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <fragment         android:id="@+id/main_head"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:name="com.example.fragment.HeadFragment"/>    <fragment         android:id="@+id/main_body"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:name="com.example.fragment.BodyFragment"/></LinearLayout>

MainActivity.java

package com.example.fragment;import android.app.Activity;import android.os.Bundle;import android.widget.LinearLayout;public class MainActivity extends Activity {private LinearLayout mainHead,mainBody;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);}}

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