我想創建一個圖像的縮略圖,我從圖片庫或相機使用UIImagePickerController導入使用- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)selectedImage editingInfo:(NSDictionary *)editingInfo當我使用相機時,點擊圖像的縮略圖很容易創建,但是當通過從照片庫中選擇圖像完成相同的操作時,我的應用程序崩潰。當我在應用程序中啓用NSZombie時,它顯示f- [UIImage drawInRect:]:消息發送到釋放實例0x5abc140上myThumbnail變量..在iPhone中創建圖像的縮略圖?
我可能做錯什麼?
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)selectedImage editingInfo:(NSDictionary *)editingInfo
{
[self saveImage:selectedImage];
}
- (void)saveImage:(UIImage *)img
{
myThumbNail = img;
UIGraphicsBeginImageContext(CGSizeMake(60.0,60.0));
[myThumbNail drawInRect:CGRectMake(0.0, 0.0, 60.0, 60.0)];// gets killed here
}
這是您正在使用的確切代碼? – 2011-04-12 02:49:54