电影展示Fragment

1.MainActivity

import android.os.Bundle;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;

public class MainActivity extends Activity implements Callback {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);       
    }

    @Override
    public void getMovieResult(String content) {
        RightFragment rightFragment = new RightFragment();  
        Bundle bundle = new Bundle();
        bundle.putString("MovieContent", content);
        rightFragment.setArguments(bundle);
        
        FragmentManager manager = getFragmentManager();
        FragmentTransaction transaction = manager.beginTransaction();
        transaction.replace(R.id.layout_container_rightFragment, rightFragment);
        //对于是否要加transaction.addToBackStack(null)
        //也就是将Fragment加入到回退栈。官方的说法是取决于你是否要在回退的时候显示上一个Fragment。
        transaction.addToBackStack(null);
        transaction.commit();       
    }   
}

activity_main布局

<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="horizontal" >
  <fragment 
      android:id="@+id/leftFragment"
      android:layout_width="0dp"
      android:layout_weight="1"
      android:layout_height="match_parent"
      android:name="com.qianfeng.fragmentmovie.LeftFragment"/>
  
  <LinearLayout 
      android:id="@+id/layout_container_rightFragment"
      android:layout_width="0dp"
      android:layout_weight="2"
      android:layout_height="match_parent"
      android:orientation="horizontal">     
  </LinearLayout>
</LinearLayout>

RightFragment:

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 RightFragment extends Fragment {
    private TextView textView;  
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_right, container, false);
        textView = (TextView) view.findViewById(R.id.textView);
        String str = getArguments().getString("MovieContent");
        textView.setText(str);
        return view;
    }
}

fragment_right布局

<?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" >
    <ScrollView 
        android:layout_width="match_parent"
        android:layout_height="wrap_content">      
        <TextView 
            android:id="@+id/textView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="展示电影内容的TextView"/>      
    </ScrollView>   
</LinearLayout>

定义一个回调接口

public interface Callback {
    public void getMovieResult(String content);
}

LeftFragment代码:

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import android.app.Activity;
import android.app.Fragment;
import android.content.res.AssetManager;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class LeftFragment extends Fragment {

    private ListView listView;
    private String[] arrTitle = {"扫毒","功夫战斗机","顶楼的大象","狂爱恶徒","兽性窥探","新金瓶梅","绣春刀","变形金刚4","后会无期","3D肉蒲团","色·戒"};
    private ArrayAdapter<String> adapter;
    private Callback myListener;
    
    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        myListener = (Callback) getActivity();
    }
    
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
            Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_left,container , false);
        listView = (ListView) view.findViewById(R.id.listView);
        adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, arrTitle);
        listView.setAdapter(adapter);
        
        getMovieContent(0);//默认加载第一条电影内容
        
        //绑定每一项item的单击事件 点击item的时候解析相应的文本内容然后显示在右侧的Fragment中的TextView上
        listView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                getMovieContent(position);
            }
        }); 
        return view;
    }
    
    //自定义获取相应电影内容的方法
    public void getMovieContent(int position){
        InputStream is = null;
        ByteArrayOutputStream baos = null;
        try {
            AssetManager manager = getActivity().getResources().getAssets();
            is= manager.open("movie"+position+".txt");//将资产目录下的文件通过流读取
            baos = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            int len = 0;
            while ((len=is.read(buffer))!=-1) {
                baos.write(buffer, 0, len);
                baos.flush();
            }
            //电影内容字符串
            byte[] result = baos.toByteArray();
            String movieContent = new String(result, "utf-8");
            myListener.getMovieResult(movieContent);        
        } catch (Exception e) {
            e.printStackTrace();
        }finally{
            if (is!=null) {
                try {
                    is.close();
                    baos.close();
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
    }
}

fragment_left布局

<?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" >   
    <ListView 
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:divider="#5f00"
        android:dividerHeight="1dp"
        android:listSelector="#50f0"
        android:background="@android:color/darker_gray">     
    </ListView>
</LinearLayout>

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