filemanager.java

7个Android应用程序源代码

		builder.setView(dialogview);
		builder.setPositiveButton(android.R.string.ok,
				new AlertDialog.OnClickListener() {
					public void onClick(DialogInterface dialog, int which) {
						String value = ((EditText) dialogview.findViewById(R.id.EditText_PROM)).getText().toString();
						if ( newFolder(value) )
						{
							Builder builder = new Builder(FileManager.this);
							builder.setTitle("提示");
							builder.setMessage("新建文件夹成功");
							builder.setPositiveButton(android.R.string.ok,
									new AlertDialog.OnClickListener() {
										public void onClick(DialogInterface dialog, int which) {
											//点击确定按钮之后,继续执行网页中的操作
											dialog.cancel();
										}
									});
							builder.setCancelable(false);
							builder.create();
							builder.show();
						}
						else
						{
							Builder builder = new Builder(FileManager.this);
							builder.setTitle("提示");
							builder.setMessage("新建文件夹失败");
							builder.setPositiveButton(android.R.string.ok,
									new AlertDialog.OnClickListener() {
										public void onClick(DialogInterface dialog, int which) {
											//点击确定按钮之后,继续执行网页中的操作
											dialog.cancel();
										}
									});
							builder.setCancelable(false);
							builder.create();
							builder.show();	
						}
					}
				});
		builder.setNegativeButton(android.R.string.cancel,
				new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int which) {
						dialog.cancel();
					}
				});
		builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
					public void onCancel(DialogInterface dialog) {
						dialog.cancel();
					}
				});
		builder.show();
	}
	//新建文件夹
	public boolean newFolder(String file)
	{
		File dirFile = new File(this.currentDirectory.getAbsolutePath()+"/"+file);
		try
		{
			if (!(dirFile.exists()) && !(dirFile.isDirectory()))
			{
				boolean creadok = dirFile.mkdirs();
				if (creadok)
				{
					this.browseTo(this.currentDirectory);
					return true;
				}
				else
				{
					return false;
				}
			}
		}
		catch (Exception e)
		{
			e.printStackTrace();
			System.out.println(e);
			return false;
		}
		return true;
	}
	//删除文件
    public boolean deleteFile(File file)
	{
		boolean result = false;
		if (file != null)
		{
			try
			{
				File file2 = file;
				file2.delete();
				result = true;
			}
			catch (Exception e)
			{
				e.printStackTrace();
				result = false;
			}
		}
		return result;
	} 
    //删除文件夹
	public boolean deleteFolder(File folder)
	{
		boolean result = false;
		try
		{
			String childs[] = folder.list();
			if (childs == null || childs.length <= 0)
			{
				if (folder.delete())
				{
					result = true;
				}
			}
			else
			{
				for (int i = 0; i < childs.length; i++)
				{
					String childName = childs[i];
					String childPath = folder.getPath() + File.separator + childName;
					File filePath = new File(childPath);
					if (filePath.exists() && filePath.isFile())
					{
						if (filePath.delete())
						{
							result = true;
						}
						else
						{
							result = false;
							break;
						}
					}
					else if (filePath.exists() && filePath.isDirectory())
					{
						if (deleteFolder(filePath))
						{
							result = true;
						}
						else
						{
							result = false;
							break;
						}
					}
				}
				folder.delete();
			}
		}
		catch (Exception e)
		{
			e.printStackTrace();
			result = false;
		}
		return result;
	} 
	
	//处理文件，包括打开，重命名等操作
	public void fileOptMenu(final File file)
	{
		OnClickListener listener = new DialogInterface.OnClickListener() {
			public void onClick(DialogInterface dialog, int which)
			{
				if (which == 0)
				{
					openFile(file);
				}
				else if (which == 1)
				{
					//自定义一个带输入的对话框由TextView和EditText构成
					final LayoutInflater factory = LayoutInflater.from(FileManager.this);
					final View dialogview = factory.inflate(R.layout.rename, null);
					//设置TextView的提示信息
					((TextView) dialogview.findViewById(R.id.TextView01)).setText("重命名");
					//设置EditText输入框初始值
					((EditText) dialogview.findViewById(R.id.EditText01)).setText(file.getName());
					
					Builder builder = new Builder(FileManager.this);
					builder.setTitle("重命名");
					builder.setView(dialogview);
					builder.setPositiveButton(android.R.string.ok,
							new AlertDialog.OnClickListener() {
								public void onClick(DialogInterface dialog, int which) {
									//点击确定之后
									String value = GetCurDirectory()+"/"+((EditText) dialogview.findViewById(R.id.EditText01)).getText().toString();
									if(new File(value).exists())
									{
										Builder builder = new Builder(FileManager.this);
										builder.setTitle("重命名");
										builder.setMessage("文件名重复，是否需要覆盖？");
										builder.setPositiveButton(android.R.string.ok,
												new AlertDialog.OnClickListener() {
													public void onClick(DialogInterface dialog, int which) {
														String str2 = GetCurDirectory()+"/"+((EditText) dialogview.findViewById(R.id.EditText01)).getText().toString();
														file.renameTo(new File(str2));
														browseTo(new File(GetCurDirectory()));
													}
												});
										builder.setNegativeButton(android.R.string.cancel,
												new DialogInterface.OnClickListener() {
													public void onClick(DialogInterface dialog, int which) {
														dialog.cancel();
													}
												});
										builder.setCancelable(false);
										builder.create();
										builder.show();
									}
									else 
									{
										//重命名
										file.renameTo(new File(value));
										browseTo(new File(GetCurDirectory()));
									}
								}
							});
					builder.setNegativeButton(android.R.string.cancel,
							new DialogInterface.OnClickListener() {
								public void onClick(DialogInterface dialog, int which) {
									dialog.cancel();
								}
							});
					builder.setOnCancelListener(new DialogInterface.OnCancelListener() {
								public void onCancel(DialogInterface dialog) {
									dialog.cancel();
								}
							});
					builder.show();
				}
				else if ( which == 2 )
				{
					Builder builder = new Builder(FileManager.this);
					builder.setTitle("删除文件");
					builder.setMessage("确定删除"+file.getName()+"？");
					builder.setPositiveButton(android.R.string.ok,
							new AlertDialog.OnClickListener() {
								public void onClick(DialogInterface dialog, int which) {
									if ( deleteFile(file) )
									{
										Builder builder = new Builder(FileManager.this);
										builder.setTitle("提示对话框");
										builder.setMessage("删除成功");
										builder.setPositiveButton(android.R.string.ok,
												new AlertDialog.OnClickListener() {
													public void onClick(DialogInterface dialog, int which) {
														//点击确定按钮之后
														dialog.cancel();
														browseTo(new File(GetCurDirectory()));
													}
												});
										builder.setCancelable(false);
										builder.create();
										builder.show();
									}
									else 
									{
										Builder builder = new Builder(FileManager.this);
										builder.setTitle("提示对话框");
										builder.setMessage("删除失败");
										builder.setPositiveButton(android.R.string.ok,
												new AlertDialog.OnClickListener() {
													public void onClick(DialogInterface dialog, int which) {
														//点击确定按钮之后
														dialog.cancel();
													}
												});
										builder.setCancelable(false);
										builder.create();
										builder.show();	
									}
								}
							});
					builder.setNegativeButton(android.R.string.cancel,
							new DialogInterface.OnClickListener() {
								public void onClick(DialogInterface dialog, int which) {
									dialog.cancel();
								}
							});
					builder.setCancelable(false);
					builder.create();
					builder.show();
				}
				else if ( which == 3 )//复制
				{
					//保存我们复制的文件目录
					myTmpFile = file;
					//这里我们用0表示复制操作
					myTmpOpt = 0;
				}
				else if ( which == 4 )//剪切
				{
					//保存我们复制的文件目录
					myTmpFile = file;
					//这里我们用0表示剪切操作
					myTmpOpt = 1;	 
				}
			}
		};
		//显示操作菜单
	    String[] menu={"打开","重命名","删除","复制","剪切"};
	    new AlertDialog.Builder(FileManager.this)
	        .setTitle("请选择你要进行的操作")
	        .setItems(menu,listener)
	        .show();
	}
	//得到当前目录的绝对路劲
	public String GetCurDirectory()
	{
		return this.currentDirectory.getAbsolutePath();
	}
	//移动文件
	public void moveFile(String source, String destination)
	{
		new File(source).renameTo(new File(destination));   
	}
	//复制文件
	public void copyFile(File src, File target)
	{
		InputStream in = null;
		OutputStream out = null;

		BufferedInputStream bin = null;
		BufferedOutputStream bout = null;
		try
		{
			in = new FileInputStream(src);
			out = new FileOutputStream(target);
			bin = new BufferedInputStream(in);
			bout = new BufferedOutputStream(out);

			byte[] b = new byte[8192];
			int len = bin.read(b);
			while (len != -1)
			{
				bout.write(b, 0, len);
				len = bin.read(b);
			}

		}
		catch (FileNotFoundException e)
		{
			e.printStackTrace();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
		finally
		{
			try
			{
				if (bin != null)
				{
					bin.close();
				}
				if (bout != null)
				{
					bout.close();
				}
			}
			catch (IOException e)
			{
				e.printStackTrace();
			}
		}
	}
}