Android Fragmnet-Fragment數據交換以及ListFragment的使用

    我把Activity的視圖分成三個部分，並且在第二部分加載一個listFragment、第三部分加載一個Fragment。
    用來實現Fragmnet-Fragment、Activity-Fragment的數據交換測試。下面是效果圖：

先是佈局文件：

一共有4個XML文件，第一個是Activity的佈局，第二個是自定義適配器的佈局，第三個是中間ListFragment的佈局，第四個是右邊Fragment的佈局。

//———————-Activity的佈局文件————————

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

    <LinearLayout
        android:id="@+id/left"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="#cccccc"
        android:gravity="center_horizontal"
        android:orientation="vertical" >

        <ImageView
            android:id="@+id/imageView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:src="@drawable/timg" 
            android:paddingTop="30sp"
            android:paddingBottom="50sp"/>

        <Button
            android:id="@+id/left_button1"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="英雄列表" />

        <Button
            android:id="@+id/left_button2"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="皮膚列表" />
           <Button
            android:id="@+id/left_button3"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="五殺截圖" />
        <Button
            android:id="@+id/left_button4"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="好友列表" />

    </LinearLayout>

    <LinearLayout
        android:id="@+id/center"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="#ccdddd"
        android:gravity="center_vertical|center_horizontal"
        android:orientation="vertical" >
    </LinearLayout>

    <LinearLayout
        android:id="@+id/right"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="2"
        android:background="#ccddcc"
        android:gravity="center_horizontal"
        android:orientation="vertical" >
    </LinearLayout>

</LinearLayout>

//———————-自定義適配器佈局文件————————

<?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" >

    <ImageView
        android:id="@+id/adapter_imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingBottom="5sp"
        android:paddingLeft="10sp"
        android:paddingTop="5sp"
        android:src="@drawable/aa" />

    <TextView
        android:id="@+id/adapter_textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingBottom="5sp"
        android:paddingLeft="10sp"
        android:paddingTop="6sp"
        android:textColor="#2828ff"
        android:text="TextView" />

</LinearLayout>

//———————-ListFragment佈局文件————————

PS：

ListFragment的API規定：ListView的ID必須定義爲：android:id=”@id/android:list”

<?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" >

    <ListView
        android:id="@id/android:list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
    </ListView>

</LinearLayout>

//———————-右邊Fragmnet的佈局————————

<?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" 
    android:gravity="center_horizontal">

     <TextView
        android:id="@+id/right_textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#2828ff"
        android:textSize="18sp" 
        android:paddingTop="30dp"
        android:text="英雄介紹"/>
    <TextView
        android:id="@+id/right_textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#2828ff"
        android:paddingTop="20dp"
        android:textSize="18sp" />

</LinearLayout>

    我定義了一個XML數組文件，用來描述對英雄的介紹：

代碼：

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string-array name="hero_introduced">
        <item>拉克絲出生於享有聲望的冕衛家族，在德瑪西亞軍隊模範家庭的氛圍裏，她註定是不平凡的。</item>
        <item>蓋倫是德瑪西亞軍隊的驕傲，是無畏先鋒軍團的領袖。</item>
        <item>吉格斯生來就有着搗鼓機械的天賦，但他自由散漫、過度亢奮的天性在約德爾科學家當中實屬罕</item>
        <item>艾歐尼亞人英勇奮戰，卻無法阻止外敵，鐵蹄踏過，大地浸染血跡。</item>
        <item>特朗德爾是一個粗鄙且狡猾的巨魔，性格非常頑劣。</item>
        <item>伊澤瑞爾的血液中流淌着與生俱來的魔法天賦。。</item>
    </string-array>
</resources>

//—————————————MainActivity 代碼—————————————–
在Activity中加載Fragment的步湊：
1、FragmentManager fragmentManager = getFragmentManager(); 獲取Fragment管理類
2、FragmentTransaction transaction = fragmentManager.beginTransaction();取得FragmentTransaction 類
3、獲得一個Fragment繼承類的實例Center_Fragment center_Fragment = new Center_Fragment();
4、通過FragmentTransaction的add方法加載Fragment或者replace方法更換一個新的Fragment。

import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.left_button1).setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                FragmentManager fragmentManager = getFragmentManager();
                FragmentTransaction transaction = fragmentManager.beginTransaction();
                Center_Fragment center_Fragment = new Center_Fragment();
                transaction.replace(R.id.center, center_Fragment,"center_Fragment");
                transaction.commit();
            }
        });
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}

//——————–ListFragment子類代碼——————–
一、ListFragment的使用。
創建Center_Fragment繼承ListFragment類，並且重寫
a、onCreate //ListFragment和listview不同的是：添加適配器時使用setListAdapter方法添加
b、onCreateView
c、onPause
d、onListItemClick//點擊事件監聽

二、Fragment-Fragment數據交換
使用Fragment的方法setArguments可以在Fragment傳遞一個Bundle類，Bundle的實現類可以使用putString(“name”, “張三”)方法添加各種類型的數據的鍵值對，在接受的Fragement中用getArguments().getString(“name”);接受，name爲鍵

import java.util.ArrayList;
import java.util.List;

import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.app.ListFragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class Center_Fragment extends ListFragment {
    private String[] data = { "光輝女郎","德瑪西亞之力","炸彈人","刀鋒意志", "詛咒巨魔", "探險家", "牛頭酋長", "殤之木乃伊", "冰晶鳳凰",
            "黑暗之女", "寒冰射手", "露露","提莫隊長","炸彈人","刀鋒意志", "詛咒巨魔", "探險家", "牛頭酋長", "殤之木乃伊", "冰晶鳳凰",
            "黑暗之女", "寒冰射手" };
    private myAdapter adapter;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        adapter = new myAdapter(getData());
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        View view = LayoutInflater.from(getActivity()).inflate(R.layout.center,
                null);
        setListAdapter(adapter);
        return view;
    }

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

    @Override
    public void onListItemClick(ListView l, View v, int position, long id) {
        // TODO Auto-generated method stub
        super.onListItemClick(l, v, position, id);
        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction transaction = fragmentManager.beginTransaction();
        Right_Fragment right_Fragment = new Right_Fragment();
        Bundle bundle = new Bundle();
        bundle.putString("name", getListAdapter().getItem(position).toString());  //fargment間值傳遞
        right_Fragment.setArguments(bundle);
        transaction.replace(R.id.right, right_Fragment, "right_Fragment");
        transaction.commit();
    }

    // ----------------------------------------------------
    // 獲取數據

    public List<String> getData() {
        List<String> list = new ArrayList<String>();
        for (int i = 0; i < data.length; i++) {
            list.add(data[i]);
        }
        return list;
    }

    // 自定義適配器
    class myAdapter extends BaseAdapter {
        private List<String> list;

        public myAdapter(List<String> list) {
            // TODO Auto-generated constructor stub
            this.list = list;
        }

        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return list.size();
        }

        @Override
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return list.get(position);
        }

        @Override
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            // TODO Auto-generated method stub
            View view = null;
            if (convertView != null) {
                view = convertView;
            } else {
                view = LayoutInflater.from(getActivity()).inflate(
                        R.layout.adapter, null);
            }
            TextView textView = (TextView) view
                    .findViewById(R.id.adapter_textView1);
            textView.setText(list.get(position).toString());
            return view;
        }

    }
}

//————————————————右邊Fragment的代碼————————————————

import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;

public class Right_Fragment extends Fragment {
    private String stringCenterFragment;
    private String[] data;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        stringCenterFragment = getArguments().getString("name"); // 獲取另一個Fragment傳遞過來的，標記爲"name"的值
        Toast.makeText(getActivity(),
                "---Right_Fragment->>" + stringCenterFragment, 1).show();
        data = getResources().getStringArray(R.array.hero_introduced);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        View view = LayoutInflater.from(getActivity()).inflate(R.layout.right,
                null);
        TextView textView = (TextView) view.findViewById(R.id.right_textView2);
        int i = 0;
        if (stringCenterFragment.equals("光輝女郎")) {
            i = 0;
        } else if (stringCenterFragment.equals("德瑪西亞之力")) {
            i = 1;
        } else if (stringCenterFragment.equals("炸彈人")) {
            i = 2;
        } else if (stringCenterFragment.equals("刀鋒意志")) {
            i = 3;
        } else if (stringCenterFragment.equals("詛咒巨魔")) {
            i = 4;
        } else if (stringCenterFragment.equals("探險家")) {
            i = 5;
        } else
            i = 0;
        textView.setText(data[i]);
        return view;
    }

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

http://blog.csdn.net/q296264785/article/details/53167961

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