模拟实现android 文件管理器功能（循环打开文件夹）

一、 这部分仅实现了文件夹循环打开，  完整模仿代码我在后面文章中会贴出来。

        这要对listview的使用有一定的了解， 还没入门的同学请看http://blog.csdn.net/xiaominmincs/article/details/7799986

看运行后的效果：

二、xml代码：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" 
    >

    <TextView
        android:id="@+id/tv"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="sdcard目录" />
    <ListView 
     android:id="@+id/lvfiles"
     android:layout_width="fill_parent"
    android:layout_height="wrap_content"
     >
      </ListView>

</LinearLayout>

三、 java代码：

package xmm.Zt_07_storage;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class Filestorage extends Activity {
/** Called when the activity is first created. */

File f;
private FileOutputStream out;
private FileInputStream in;
private BufferedReader reader;
File[] arrf;
private TextView tv1;
ListView lvfile;
Intent intents=new Intent();
String path;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.filestorage);
TextView  tv=(TextView) findViewById(R.id.tv);
lvfile = (ListView) findViewById(R.id.lvfiles);
String compath = getIntent().getStringExtra("path");
if (compath == "" || compath.equals("")) {
compath= "/mnt/sdcard";
} 
 tv.setText(compath);
f = new File(compath);

if (!(getSDcard() == 0)) {
lvfile.setAdapter(new MyAdapter());
lvfile.setOnItemClickListener(new OnItemClickListener() {

public void onItemClick(AdapterView<?> arg0, View arg1,
int arg2, long arg3) {
// TODO Auto-generated method stub
path = arrf[arg2].getAbsolutePath();
tv1.setText(path);
intents.putExtra("path", path);

intents.setClass(Filestorage.this, Filestorage.class);
startActivity(intents);
}
});
}

}



public int getSDcard() {
arrf = f.listFiles();
if (arrf == null || arrf.equals(null)) {
Toast.makeText(this, "sd卡里面没有数据", Toast.LENGTH_LONG);
return 0;
} else {
return 1;
}
}

public class MyAdapter extends BaseAdapter {

public int getCount() {
// TODO Auto-generated method stub
Log.e("---getCount", arrf.length + "");
return arrf.length;
}

public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arrf[arg0];
}

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

public View getView(int position, View convertView, ViewGroup parent) {
LayoutInflater inflater = getLayoutInflater();
View row = inflater.inflate(R.layout.filerowlayout, null);
tv1 = (TextView) row.findViewById(R.id.tvfile);
tv1.setText(arrf[position].getName());
return row;
}

}

}

最后： 希望大家一起讨论！ 谢谢！    

完整代码：http://115.com/file/dp932rc9#zt_07_storage.rar