读取存储空间下的文件并以ListView的情势显示出来。
package com.zms.filemanager;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.Toast;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
public class Main extends Activity implements AdapterView.OnItemClickListener,
AdapterView.OnItemLongClickListener {
private ListView fileView;
private String path = "/sdcard";// 文件路径
private List<Map<String, Object>> items;
private SimpleAdapter adapter;
private File backFile = null;
private String currentPath = "/sdcard";
private boolean flag;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
setTitle("文件管理");
fileView = (ListView) findViewById(R.id.filelist);
listDir(path);
}
/**
* 动态绑定文件信息到listview上
*
* @param path
*/
private void listDir(String path) {
items = bindList(path);
// if(items!=null){
adapter = new SimpleAdapter(this, items, R.layout.file_row,
new String[]{"name", "path", "img"}, new int[]{R.id.name,
R.id.desc, R.id.img});
fileView.setAdapter(adapter);
fileView.setOnItemClickListener(this);
fileView.setOnItemLongClickListener(this);
fileView.setSelection(0);
// }
}
/**
* 返回所有文件目录信息
*
* @param path
* @return
*/
private List<Map<String, Object>> bindList(String path) {
File[] files = new File(path).listFiles();
// if(files!=null){
List<Map<String, Object>> list = new ArrayList<Map<String, Object>>(
files.length);
Map<String, Object> root = new HashMap<String, Object>();
root.put("name", "/sdcard");
root.put("img", R.drawable.folder);
root.put("path", "根目录");
list.add(root);
Map<String, Object> pmap = new HashMap<String, Object>();
pmap.put("name", "返回");
pmap.put("img", R.drawable.back);
pmap.put("path", "上级目录");
list.add(pmap);
for (File file : files) {
Map<String, Object> map = new HashMap<String, Object>();
if (file.isDirectory()) {
map.put("img", R.drawable.folder);
} else {
map.put("img", R.drawable.doc);
}
map.put("name", file.getName());
map.put("path", file.getPath());
list.add(map);
}
return list;
/*
* } return null;
*/
}
@Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position,
long arg3) {
if (position == 0) {// 返回到/sdcard目录
path = "/sdcard";
listDir(path);
} else if (position == 1) {// 返回上一级目录
toParent();
} else {
if (items != null) {
path = (String) items.get(position).get("path");
File file = new File(path);
if (file.canRead() && file.canExecute() && file.isDirectory()) {
listDir(path);
} else {
openFile(file);
Toast.makeText(this, "嘿嘿", Toast.LENGTH_SHORT).show();
}
}
}
backFile = new File(path);
}
private void toParent() {// 回到父目录
File file = new File(path);
File parent = file.getParentFile();
if (parent == null) {
listDir(path);
} else {
path = parent.getAbsolutePath();
listDir(path);
}
}
/**
* 文件操作提醒
*
* @param id
*/
private void myNewDialog(int id) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
switch (id) {
case 0:
LayoutInflater factory = LayoutInflater.from(this);
final View textEntryView = factory.inflate(R.layout.filedialog,
null);
builder.setTitle("创立文件夹");
builder.setView(textEntryView);
builder.setPositiveButton("肯定", new CreateDialog(textEntryView));
builder.setNegativeButton("撤消", null);
break;
case 1:
LayoutInflater factory2 = LayoutInflater.from(this);
final View textEntryView2 = factory2.inflate(R.layout.filedialog,
null);
builder.setTitle("重命名文件");
builder.setView(textEntryView2);
builder.setPositiveButton("肯定", new RenameDialog(textEntryView2));
// <span
//>builder.setNegativeButton("撤消",
// null);</span>
builder.setNegativeButton("撤消", null);
break;
case 2:
builder.setTitle("肯定要删除吗？");
builder.setPositiveButton("肯定", new DeleteDialog());
builder.setNegativeButton("撤消", null);
break;
}
builder.create().show();
}
private void mySortDialog(int id) { // 排序
AlertDialog.Builder builder = new AlertDialog.Builder(this);
switch (id) {
case 0:// 按名称排序
LayoutInflater factory = LayoutInflater.from(this);
final View textEntryView = factory.inflate(R.layout.filedialog,
null);
builder.setTitle("创立文件夹");
builder.setView(textEntryView);
builder.setPositiveButton("肯定", new CreateDialog(textEntryView));
builder.setNegativeButton("撤消", null);
break;
case 1:// 按时光排序
LayoutInflater factory2 = LayoutInflater.from(this);
final View textEntryView2 = factory2.inflate(R.layout.filedialog,
null);
builder.setTitle("重命名文件");
builder.setView(textEntryView2);
builder.setPositiveButton("肯定", new RenameDialog(textEntryView2));
// <span
//>builder.setNegativeButton("撤消",
// null);</span>
builder.setNegativeButton("撤消", null);
break;
case 2:
builder.setTitle("肯定要删除吗？");
builder.setPositiveButton("肯定", new DeleteDialog());
builder.setNegativeButton("撤消", null);
break;
}
builder.create().show();
}
/**
* 依据路径删除指定的目录或文件，不管存在与否
*
* @param sPath 要删除的目录或文件
* @return 删除胜利返回 true，否则返回 false。
*/
public boolean DeleteFolder(String sPath) {
flag = false;
File file = new File(sPath);
// 断定目录或文件是不是存在
if (!file.exists()) { // 不存在返回 false
return flag;
} else {
// 断定是不是为文件
if (file.isFile()) { // 为文件时调用删除文件办法
return deleteFile(sPath);
} else { // 为目录时调用删除目录办法
return deleteDirectory(sPath);
}
}
}
/**
* 删除单个文件
*
* @param sPath 被删除文件的文件名
* @return 单个文件删除胜利返回true，否则返回false
*/
public boolean deleteFile(String sPath) {
flag = false;
File file = new File(sPath);
// 路径为文件且不为空则进行删除
if (file.isFile() && file.exists()) {
file.delete();
flag = true;
}
return flag;
}
/**
* 删除目录（文件夹）和目录下的文件
*
* @param sPath 被删除目录的文件路径
* @return 目录删除胜利返回true，否则返回false
*/
public boolean deleteDirectory(String sPath) {
// 如果sPath不以文件分隔符结尾，主动添加文件分隔符
if (!sPath.endsWith(File.separator)) {
sPath = sPath + File.separator;
}
File dirFile = new File(sPath);
// 如果dir对应的文件不存在，或不是一个目录，则退出
if (!dirFile.exists() || !dirFile.isDirectory()) {
return false;
}
flag = true;
// 删除文件夹下的所有文件(包含子目录)
File[] files = dirFile.listFiles();
for (int i = 0; i < files.length; i++) {
// 删除子文件
if (files[i].isFile()) {
flag = deleteFile(files[i].getAbsolutePath());
if (!flag)
break;
} // 删除子目录
else {
flag = deleteDirectory(files[i].getAbsolutePath());
if (!flag)
break;
}
}
if (!flag)
return false;
// 删除当前目录
if (dirFile.delete()) {
return true;
} else {
return false;
}
}
/**
* 文件刷新
*
* @param file
*/
private void fileScan(String file) {
Uri data = Uri.parse("file://" + file);
sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, data));
}
/**
* 启动文件打开
*
* @param f
*/
private void openFile(File f) {
Intent intent = new Intent();
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setAction(android.content.Intent.ACTION_VIEW);
// 获得文件媒体类型
String type = getMIMEType(f);
if (type == null)
return;
intent.setDataAndType(Uri.fromFile(f), type);
startActivity(intent);
}
// add for test start
private final String[][] MIME_MapTable = {
// {后缀名， MIME类型}
{".bin", "application/octet-stream"}, {".bmp", "image/bmp"},
package com.zms.fil
