以下程式碼在 Android 的平台下,無法正確的處理 JPG 圖型,但在 WIndows 下是對的.

void __fastcall TForm2::Button1Click(TObject *Sender)
{ System::Ioutils::TPath::GetPublicPath();
String bk;
#if defined(_PLAT_ANDROID)
bk = System::Ioutils::TPath::GetDocumentsPath() PathDelim _D("123.jpg");
#else
bk = _D("123.png");
#endif

if(FileExists(bk))
{
TImage *img = new TImage(NULL);

TBitmapData LBitmapData;
int w,h;
TAlphaColorArray* LColorArray;

unsigned int start = TThread::GetTickCount();
//for( int i=0;i<100;i )
{
img->Bitmap->LoadFromFile(bk);

if(img->Bitmap->Map(TMapAccess::ReadWrite, LBitmapData))
{
for(int y=0;y<>> /> {< /> >( /> >> /> {< /> > /> /> /> {< /> /> }< /> }< /> }< /> >Bitmap->Unmap(LBitmapData);
}
}
Edit1->Text = TThread::GetTickCount()-start;

Image1->Bitmap->Assign(img->Bitmap);
delete img;
}
}
有附圖在檔案中

附加檔案：58edee73757da_3.TestBitmapPixel.rar