fragment使用的簡單示例

實現如下效果

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:baselineAligned="false"
    android:orientation="horizontal" >

    <fragment
        android:id="@+id/articleFragment"
        android:name="com.example.fragmentdemo.IndexFragment"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1" />

    <fragment
        android:id="@+id/contentFragment"
        android:name="com.example.fragmentdemo.ContentFragment"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="2" />

</LinearLayout>

content_fragment.xml

<RelativeLayout 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: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="com.example.fragmentdemo.MainActivity" >

    <TextView
        android:id="@+id/contentTxt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="50sp" />

</RelativeLayout>

index_fragment.xml

<RelativeLayout 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: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="com.example.fragmentdemo.MainActivity" >

    <ListView
        android:id="@+id/listView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

</RelativeLayout>

list_item.xml

<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/textView"
    android:textSize="50sp"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

</TextView>

ContentFragment .ja

package com.example.fragmentdemo;

import android.annotation.SuppressLint;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

@SuppressLint("NewApi")
public class ContentFragment extends Fragment {

	@Override
	public void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		// 　 第一個是resource ID，指明瞭當前的Fragment對應的資源文件；
		// 　　第二個參數是父容器控件；
		// 　　第三個布爾值參數表明是否連接該佈局和其父容器控件，在這裏的情況設置爲false，
		// 因爲系統已經插入了這個佈局到父控件，設置爲true將會產生多餘的一個View
		// Group。
		return inflater.inflate(R.layout.content_fragment, container, false);
	}

	@Override
	public void onPause() {
		// TODO Auto-generated method stub
		super.onPause();
	}
}

IndexFragment.java

package com.example.fragmentdemo;

import android.annotation.SuppressLint;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

@SuppressLint("NewApi")
public class IndexFragment extends Fragment {

	@Override
	public void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
	}

	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		// 　 第一個是resource ID，指明瞭當前的Fragment對應的資源文件；
		// 　　第二個參數是父容器控件；
		// 　　第三個布爾值參數表明是否連接該佈局和其父容器控件，在這裏的情況設置爲false，
		// 因爲系統已經插入了這個佈局到父控件，設置爲true將會產生多餘的一個View
		// Group。
		return inflater.inflate(R.layout.index_fragment, container, false);
	}

	@Override
	public void onPause() {
		// TODO Auto-generated method stub
		super.onPause();
	}
}

MainActivity.java

package com.example.fragmentdemo;

import java.util.ArrayList;

import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends FragmentActivity {
	private ListView listView;
	private TextView contentTxt;
	private ArrayList<String> content;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		listView = (ListView) findViewById(R.id.listView);
		contentTxt = (TextView) findViewById(R.id.contentTxt);
		ArrayList<String> name = new ArrayList<String>();
		for (int i = 0; i < 10; i++) {
			name.add(i + "");
		}
		content = new ArrayList<String>();
		for (int i = 0; i < 10; i++) {
			content.add("" + i);
		}
		ArrayAdapter<String> adapter = new ArrayAdapter<String>(
				MainActivity.this, R.layout.list_item, name);
		listView.setAdapter(adapter);
		listView.setOnItemClickListener(ListViewItemClickListener);
	}

	OnItemClickListener ListViewItemClickListener = new OnItemClickListener() {

		@Override
		public void onItemClick(AdapterView<?> parent, View view, int position,
				long id) {
			// TODO Auto-generated method stub
			contentTxt.setText("點擊的數字是：" + content.get(position));
		}
	};
}