标签：文件管理 filemanager 文件信息
读取存储空间下的文件并以ListView的形式显示出来。
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, "呵呵", 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);
}
}
/**
* 文件操作提示
*
* @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("创建文件夹");
builder.setView(textEntryView);
builder.setPositiveButton("确定", new CreateDialog(textEntryView));
builder.setNegativeButton("取消", 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("确定", new RenameDialog(textEntryView2));
// <span
// style="font-family:Arial,Helvetica,sans-serif;">builder.setNegativeButton("取消",
// null);</span>
builder.setNegativeButton("取消", null);
break;
case 2:
builder.setTitle("确定要删除吗？");
builder.setPositiveButton("确定", new DeleteDialog());
builder.setNegativeButton("取消", 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("创建文件夹");
builder.setView(textEntryView);
builder.setPositiveButton("确定", new CreateDialog(textEntryView));
builder.setNegativeButton("取消", null);
break;
case 1:// 按时间排序
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("确定", new RenameDialog(textEntryView2));
// <span
// style="font-family:Arial,Helvetica,sans-serif;">builder.setNegativeButton("取消",
// null);</span>
builder.setNegativeButton("取消", null);
break;
case 2:
builder.setTitle("确定要删除吗？");
builder.setPositiveButton("确定", new DeleteDialog());
builder.setNegativeButton("取消", null);
break;
}
builder.create().show();
}
/**
* 根据路径删除指定的目录或文件，无论存在与否
*
* @param sPath 要删除的目录或文件
* @return 删除成功返回 true，否则返回 false。
*/
public boolean DeleteFolder(String sPath) {
flag = false;
File file = new File(sPath);
// 判断目录或文件是否存在
if (!file.exists()) { // 不存在返回 false
return flag;
} else {
// 判断是否为文件
if (file.isFile()) { // 为文件时调用删除文件方法
return deleteFile(sPath);
} else { // 为目录时调用删除目录方法
return deleteDirectory(sPath);
}
}
}
/**
* 删除单个文件
*
* @param sPath 被删除文件的文件名
* @return 单个文件删除成功返回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）以及目录下的文件
*
* @param sPath 被删除目录的文件路径
* @return 目录删除成功返回true，否则返回false
*/
public boolean deleteDirectory(String sPath) {
// 如果sPath不以文件分隔符结尾，自动添加文件分隔符
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，或者不是一个目录，则退出
if (!dirFile.exists() || !dirFile.isDirectory()) {
return false;
}
flag = true;
// 删除文件夹下的所有文件(包括子目录)
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);
// 获取文件媒体类型
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"},
{".exe", "application/octet-stream"}, {".gif", "image/gif"},
{".gtar", "application/x-gtar"},
{".js", "application/x-javascript"},
{".m3u", "audio/x-mpegurl"}, {".m4a", "audio/mp4a-latm"},
{".m4b", "audio/mp4a-latm"}, {".m4p", "audio/mp4a-latm"},
{".m4u", "video/vnd.mpegurl"}, {".m4v", "video/x-m4v"},
{".mov", "video/quicktime"},
{".mpc", "application/vnd.mpohun.certificate"},
{".msg", "application/vnd.ms-outlook"},
{".rtf", "application/rtf"}, {".wma", "audio/x-ms-wma"},
{".wmv", "audio/x-ms-wmv"}};
// add for test end
// 获取文件类型
private String getMIMEType(File file) {
String type = "";
String fileName = file.getName();
String end = fileName.substring(fileName.indexOf(".") + 1)
.toLowerCase();
// 判断文件类型
// 文档文件Text
if (end.equals("xml") || end.equals("text") || end.equals("h")
|| end.equals("sh") || end.equals("rc") || end.equals("java")
|| end.equals("c") || end.equals("cpp") || end.equals("conf")
|| end.equals("prop") || end.equals("log"))
type = "text/plain";
else if (end.equals("htm") || end.equals("html"))
type = "text/html";
// 视频文件Video
else if (end.equals("mpe") || end.equals("mpg") || end.equals("mpeg"))
type = "video/mpeg";
else if (end.equals("3gp"))
type = "video/3gpp";
else if (end.equals("mp4") || end.equals("mpeg4"))
type = "video/mp4";
else if (end.equals("avi"))
type = "video/x-msvideo";
else if (end.equals("asf"))
type = "video/x-ms-asf";
// 音频文件Audio
else if (end.equals("mp2") || end.equals("mp3"))
type = "audio/x-mpeg";
else if (end.equals("wav"))
type = "audio/x-wav";
else if (end.equals("rmvb"))
type = "audio/x-pn-realaudio";
else if (end.equals("ogg"))
type = "audio/ogg";
else if (end.equals("mpga"))
type = "audio/mpeg";
// 图片文件
else if (end.equals("png"))
type = "image/png";
else if (end.equals("jpg") || end.equals("jpeg"))
type = "image/jpeg";
// 扩展文件Application
else if (end.equals("ppt") || end.equals("pps"))
type = "application/vnd.ms-powerpoint";
else if (end.equals("doc"))
type = "application/msword";
else if (end.equals("wps"))
type = "application/vnd.ms-works";
else if (end.equals("apk"))
type = "application/vnd.android.package-archive";
else if (end.equals("pdf"))
type = "application/pdf";
else if (end.equals("rar"))
type = "application/x-rar-compressed";
else if (end.equals("tgz") || end.equals("z"))
type = "application/x-compressed";
else if (end.equals("tar"))
type = "application/x-tar";
else if (end.equals("zip"))
type = "application/zip";
else if (end.equals("gz"))
type = "application/x-gzip";
else if (end.equals("jar"))
type = "application/java-archive";
else if (end.equals("bin") || end.equals("exe"))
type = "application/octet-stream";
// 未知文件
else if (end.equals(""))
type = "*/*";
/*
* if (end.equals("wma") || end.equals("mp3") || end.equals("midi") ||
* end.equals("ape") || end.equals("amr") || end.equals("ogg") ||
* end.equals("wav") || end.equals("acc")) { type = "audio"; } else if
* (end.equals("3gp") || end.equals("mp4") || end.equals("rmvb") ||
* end.equals("flv") || end.equals("avi") || end.equals("wmv") ||
* end.equals("f4v")) { type = "video"; } else if (end.equals("jpg") ||
* end.equals("gif") || end.equals("png") || end.equals("jpeg") ||
* end.equals("bmp")) { type = "image"; } //add for doc start else
* if(end
* .equals("txt")||end.equals("cpp")||end.equals("c")||end.equals("java"
* )||end.equals("prop")){ type = "text"; } //add for doc end else {
* Toast.makeText(getApplicationContext(), "未知文件类型", Toast.LENGTH_LONG)
* .show(); return null; }
*/
// MIME Type格式是"文件类型/文件扩展名"
type += "/*";
return type;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.add(0, Menu.FIRST, 0, "新建");
menu.add(0, Menu.FIRST + 1, 0, "关于");
menu.add(0, Menu.FIRST + 2, 0, "排序");
menu.add(0, Menu.FIRST + 3, 0, "退出");
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case 1: // 新建（文件夹）
myNewDialog(0);
break;
case 2: // 关于
Toast.makeText(this, "Copyright@Tchip 2014", Toast.LENGTH_SHORT)
.show();
break;
case 3: // 排序
mySortDialog(0);
break;
case 4: // 退出应用
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_HOME);
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
android.os.Process.killProcess(android.os.Process.myPid());
}
return super.onOptionsItemSelected(item);
}
@Override
public boolean onItemLongClick(AdapterView<?> arg0, View arg1, int arg2,
long arg3) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
String[] items = {"重命名", "删除"};
builder.setItems(items, new LongDialog(arg2));
builder.create().show();
return true;
}
class CreateDialog implements DialogInterface.OnClickListener {
private View textEntryView;
public CreateDialog(View textEntryView) {
this.textEntryView = textEntryView;
}
@Override
public void onClick(DialogInterface dialog, int which) {
// EditText userName = (EditText) textEntryView
// .findViewById(R.id.fname);
EditText userName = (EditText) textEntryView
.findViewById(R.id.fname);
String fn = userName.getText().toString().trim();
if (!TextUtils.isEmpty(fn)) {
File file = new File(backFile, fn);
if (file.exists()) {
Toast.makeText(Main.this, "文件夹已存在", Toast.LENGTH_SHORT)
.show();
} else {
if (file.mkdir()) {
Toast.makeText(Main.this, "创建成功！", Toast.LENGTH_SHORT)
.show();
} else {
Toast.makeText(Main.this, "创建失败！", Toast.LENGTH_SHORT)
.show();
}
listDir(file.getAbsolutePath());
// fileScan(f.getAbsolutePath());
adapter.notifyDataSetChanged();
}
}
}
}
class RenameDialog implements DialogInterface.OnClickListener {
private View textEntryView2;
public RenameDialog(View textEntryView2) {
this.textEntryView2 = textEntryView2;
}
@Override
public void onClick(DialogInterface dialog, int which) {
EditText userName = (EditText) textEntryView2
.findViewById(R.id.fname);
String fn = userName.getText().toString().trim();
if (!TextUtils.isEmpty(fn)) {
File old = new File(currentPath);
File f = new File(backFile.getAbsolutePath(), fn);
if (f.exists()) {
Toast.makeText(Main.this, "文件已存在", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(Main.this, "文件重命名 " + old.renameTo(f), Toast.LENGTH_SHORT)
.show();
listDir(f.getAbsolutePath());
// fileScan(f.getAbsolutePath());
adapter.notifyDataSetChanged();
}
}
}
}
class DeleteDialog implements DialogInterface.OnClickListener {
@Override
public void onClick(DialogInterface dialog, int which) {
File file = new File(currentPath);
if (file.exists()) {
DeleteFolder(file.getAbsolutePath());
listDir(file.getParent());
// fileScan(f.getAbsolutePath());
adapter.notifyDataSetChanged();
} else
Toast.makeText(Main.this, "文件不存在！", Toast.LENGTH_SHORT).show();
}
}
// 文件操作选择
class LongDialog implements DialogInterface.OnClickListener {
private int pos = 0;
public LongDialog(int pos) {
this.pos = pos;
}
@Override
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case 0:
currentPath = (String) items.get(pos).get("path");
myNewDialog(1);
break;
case 1:
currentPath = (String) items.get(pos).get("path");
myNewDialog(2);
break;
}
}
}
}标签：文件管理 filemanager 文件信息
原文地址：http://blog.csdn.net/zhoumushui/article/details/43523447
