获取Android相关文档路径

 if( System::Ioutils::TFile::Exists ("photo.BMP") )
    System::Ioutils::TFile::Delete("photo.BMP");

delphi 新路径、文件功能 IOUtils单元,文件路径，文件管理

http://docwiki.embarcadero.com/RADStudio/Berlin/en/Disk_And_Directory_Support_Routines

http://docwiki.embarcadero.com/RADStudio/XE8/en/Standard_RTL_Path_Functions_across_the_Supported_Target_Platforms

use system.IOUtils

       TPath.GetPicturesPath;
       tpath.GetTempPath;
       TPath.GetMusicPath;
       TPath.GetPicturesPath;
       TPath.GetDocumentsPath;
       TPath.GetDownloadsPath;
       TPath.GetCameraPath;

 TPath.GetFullPath( 'c:\a\b.txt’');    //  c:\a\b.txt  带文件名的完整路径

TPath.GetDirectoryName( 'c:\a\b.txt’');    //  c:\a  路径

   system.IOUtils.TPath.GetDocumentsPath；

System.IOUtils.TFile.Copy

  TFile.Create('');
  TDirectory.CreateDirectory('');

 GetSharedDocumentsPath

PathDelim

TPath.DirectorySeparatorChar

 连接路径字符串

TPath.Combine(System.IOUtils.TPath.GetDocumentsPath, afileName)

c++builder 获取Android路径，可以直接用命名空间::写代码

包含头文件#include <System.Ioutils.hpp>

Caption= System::Ioutils::TPath::GetDocumentsPath();

"D:\\Users\\Administrator\\Documents"

System::Ioutils::TFile::Exists

得到文件清单,文件列表

 ListBox1->Items->AddStrings( System::Ioutils::TDirectory::GetFiles(Edit1->Text));

递归文件清单

 TStringDynArray sl;
 sl =TDirectory.GetFiles(path, '*.txt', TSearchOption.soAllDirectories);

windows path ：

C:\Users\Administrator\Pictures
C:\Users\Administrator\AppData\Local\Temp\
C:\Users\Administrator\Music
D:\Users\Administrator\Documents
C:\Users\Administrator\AppData\Local
C:\Users\Administrator\Pictures
C:\Users\Administrator\AppData\Local
C:\Users\Administrator\AppData\Roaming
C:\ProgramData
C:\Users\Administrator\Videos
C:\Users\Administrator\Music
C:\Users\Administrator\Music
E:\mytest\Win32\Debug\
-------Shared-------
C:\Users\Public\Documents
C:\Users\Public\Pictures
C:\Users\Public\Pictures
C:\Users\Public\Music
C:\Users\Public\Videos
C:\Users\Public\Music
C:\Users\Public\Music
C:\ProgramData
C:\Users\Public\Music

Android Path

/storage/sdcard0/Android/data/com.mm.mtt/files/Pictures
/storage/sdcard0/Android/data/com.mm.mtt/files/tmp
/storage/sdcard0/Android/data/com.mm.mtt/files/Music
/data/data/com.mm.mtt/files 、、GetDocumentsPath

/storage/sdcard0/Android/data/com.mm.mtt/files/Download
/storage/sdcard0/Android/data/com.mm.mtt/files/DCIM
/data/data/com.mm.mtt/cache
/data/data/com.mm.mtt/files 、、GetHomePath
/storage/sdcard0/Android/data/com.mm.mtt/files
/storage/sdcard0/Android/data/com.mm.mtt/files/Movies
/storage/sdcard0/Android/data/com.mm.mtt/files/Ringtones
/storage/sdcard0/Android/data/com.mm.mtt/files/Alarms
/data/app-lib/com.mm.mtt-2
-------Shared-------
/storage/sdcard0/Android/data/com.mm.mtt/files
/storage/sdcard0/Pictures
/storage/sdcard0/DCIM
/storage/sdcard0/Music
/storage/sdcard0/Movies
/storage/sdcard0/Alarms
/storage/sdcard0/Alarms
/storage/sdcard0/Download
/storage/sdcard0/Ringtones

建立文件夹，不存在建立，存在忽略不报错

system.IOUtils.TDirectory.CreateDirectory('c:\a\b\c\');

System.IOUtils.TFile.Exists

System::Ioutils::TPath::GetDirectoryName //取路径

相当于以前的ExtractFilePath

一句话读文本文件

TStringDynArray fileArr=  System::Ioutils::TFile::ReadAllLines(filePath);

 for (lineno = 0; lineno < fileArr.Length; lineno++)
         {
　　　　 fileArr[lineno]；

　　 }

ForceDirectories

bf:=tpath.IsRelativePath('E:\doc');//false
bf:=tpath.IsRelativePath('ab');//true
bf:=tpath.IsPathRooted('E:\doc');//true
bf:=tpath.IsPathRooted('ab');//false
bf:=tpath.IsDriveRooted('E:\doc');//true
bf:=tpath.IsDriveRooted('ab');//false