图像不显示表单UIImagePickerControllerReferenceURL图像路径
图像不显示表单UIImagePickerControllerReferenceURL图像路径
提问于 2014-03-27 16:34:08
我使用UIImagePickerControllerReferenceURL从图片库中选择了图像，我得到了图像路径，并分配给imageView.image仍然不显示该图像，下面是我的代码。
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
NSURL *refURL = [info valueForKey:UIImagePickerControllerReferenceURL];
ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *imageAsset) {
ALAssetRepresentation *imageRep = [imageAsset defaultRepresentation];
NSString *homeDirectoryPath = NSHomeDirectory();
NSString *imagName = [imageRep filename];
NSString *imagePath = [homeDirectoryPath stringByAppendingString:imagName];
imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0,0,40,40)];
imageView.image= [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:imagePath]]];
UIView *aView=[[UIView alloc]initWithFrame:CGRectMake(100,100,100,50)];
aView.backgroundColor=[UIColor lightGrayColor];
[aView addSubview:imageView];
[categoryDisplayScrollView addSubview:aView];
[self dismissViewControllerAnimated:YES completion:NULL];
};
ALAssetsLibrary* assetslibrary = [[ALAssetsLibrary alloc] init];
[assetslibrary assetForURL:refURL resultBlock:resultblock failureBlock:nil];
}回答 2
Stack Overflow用户
发布于 2014-03-27 17:08:29
您可以使用UIImagePickerControllerOriginalImage获取图像。
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *imagepicked = [info objectForKey:UIImagePickerControllerOriginalImage];
ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *imageAsset) {
ALAssetRepresentation *imageRep = [imageAsset defaultRepresentation];
NSString *homeDirectoryPath = NSHomeDirectory();
NSString *imagName = [imageRep filename];
NSString *imagePath = [homeDirectoryPath stringByAppendingString:imagName];
imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0,0,40,40)];
imageView.image= imagepicked;
UIView *aView=[[UIView alloc]initWithFrame:CGRectMake(100,100,100,50)];
aView.backgroundColor=[UIColor lightGrayColor];
[aView addSubview:imageView];
[categoryDisplayScrollView addSubview:aView];
[self dismissViewControllerAnimated:YES completion:NULL];
};
ALAssetsLibrary* assetslibrary = [[ALAssetsLibrary alloc] init];
[assetslibrary assetForURL:refURL resultBlock:resultblock failureBlock:nil];
}希望这对你有帮助...！
Stack Overflow用户
发布于 2014-03-27 18:29:26
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo (NSDictionary *)info
{
UIImage *chosenImage = info[UIImagePickerControllerOriginalImage];
[picker dismissViewControllerAnimated:YES completion:nil];
}正如在上面的代码中提到的，你可以使用UIImagePickerControllerOriginalImage键从info字典中获取UIImage。
下一步是将此UIImage分配给UIImageView。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/22682095
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