在 iPad 模擬器上獲取照片時, 在代理方法中
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
NSLog{@“info = %@“, info};
}
得到的info 字典里面沒UIImagePickerControllerOriginalImage 和 UIImagePickerControllerEditedImage, 需要使用另外的方式獲得圖片
+(UIImage *) loadImageFromAssertByUrl:(NSURL *)url completion:(void (^)(UIImage*)) completion{
__block UIImage* img;
ALAssetsLibrary *assetLibrary=[[ALAssetsLibrary alloc] init];
[assetLibrary assetForURL:url resultBlock:^(ALAsset *asset) {
ALAssetRepresentation *rep = [asset defaultRepresentation];
Byte *buffer = (Byte*)malloc(rep.size);
NSUInteger buffered = [rep getBytes:buffer fromOffset:0.0 length:rep.size error:nil];
NSData *data = [NSData dataWithBytesNoCopy:buffer length:buffered freeWhenDone:YES];
img = [UIImage imageWithData:data];
completion(img);
NSLog(@"img ::: %@", img);
} failureBlock:^(NSError *err) {
NSLog(@"Error: %@",[err localizedDescription]);
}];
return img;
}
傳入的 Url 為[info objectForKey: UIImagePickerControllerReferenceURL]的值.
