fragment的入门DEMO

效果图：

代码如下：

1、main.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="horizontal" >

    <fragment

        android:id="@+id/title"

        class="com.njupt.fragment1.TitleFragment"

        android:layout_width="0dp"

        android:layout_height="fill_parent"

        android:layout_weight="1"

        />

    <FrameLayout

        android:id="@+id/detail"

        android:layout_width="0dp"

        android:layout_height="fill_parent"

        android:layout_weight="1"

        />

</LinearLayout>

2、TitleFragment

package com.njupt.fragment1;

import android.app.FragmentManager;

import android.app.FragmentTransaction;

import android.app.ListFragment;

import android.os.Bundle;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.ListView;

public class TitleFragment extends ListFragment {

	private String[] data = new String[]{

		"星期一",

		"星期二",

		"星期三",

		"星期四",

		"星期五",

		"星期六",

		"星期天"

	};

	private int currentPosition = 0;

	@Override

	public void onActivityCreated(Bundle savedInstanceState) {

		super.onActivityCreated(savedInstanceState);

		setListAdapter(new ArrayAdapter<String>(getActivity(),android.R.layout.simple_list_item_activated_1,android.R.id.text1,data));

		showDetail(currentPosition);

	}

	public void showDetail(int index){

		FragmentManager fm = getFragmentManager();

		DetailFragment detail = (DetailFragment) fm.findFragmentById(R.id.detail);

		if(detail == null || index != detail.getShowIndex()){

			getListView().setChoiceMode(ListView.CHOICE_MODE_SINGLE);

			getListView().setItemChecked(index, true);

			detail = DetailFragment.getInstance(index);

			FragmentTransaction ft = fm.beginTransaction();

			ft.replace(R.id.detail, detail);

			ft.commit();

		}

	}

	@Override

	public void onListItemClick(ListView l, View v, int position, long id) {

		super.onListItemClick(l, v, position, id);

		showDetail(position);

	}

}

3、DetailFragment

package com.njupt.fragment1;

import android.app.Fragment;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.TextView;

public class DetailFragment extends Fragment {

	private String[] data = new String[]{

		"星期一",

		"星期二",

		"星期三",

		"星期四",

		"星期五",

		"星期六",

		"星期天",

	};

	public static DetailFragment getInstance(int index){

		DetailFragment df = new DetailFragment();

		Bundle args = new Bundle();

		args.putInt("index", index);

		df.setArguments(args);

		return df;

	}

	public int getShowIndex(){

		return getArguments().getInt("index");

	}

	@Override

	public View onCreateView(LayoutInflater inflater, ViewGroup container,

			Bundle savedInstanceState) {

		TextView tv = new TextView(getActivity());

		tv.setText(data[getShowIndex()]);

		return tv;

	}

}