[英]How To get Image URL From PHAsset? Is it possible To save Image using PHAsset URL to document Directory?
I used 我用了
`NSURL *urlA = [info valueForKey:@"PHImageFileURLKey"];`
but when i try to save image using URL then URL is nil. 但是当我尝试使用URL保存图像时,URL为零。
`NSData *pngData =[NSData dataWithContentsOfURL:urlA options:NSDataReadingMapped error:nil];`
asset = Here you have to pass your PHAsset . asset =在这里你必须通过你的PHAsset。
PHImageRequestOptions * imageRequestOptions = [[PHImageRequestOptions alloc] init];
[[PHImageManager defaultManager]
requestImageDataForAsset:asset
options:imageRequestOptions
resultHandler:^(NSData *imageData, NSString *dataUTI,
UIImageOrientation orientation,
NSDictionary *info)
{
NSLog(@"info = %@", info);
if ([info objectForKey:@"PHImageFileURLKey"]) {
NSURL *path = [info objectForKey:@"PHImageFileURLKey"];
// if you want to save image in document see this.
[self saveimageindocument:imageData withimagename:[NSString stringWithFormat:@"DEMO"]];
}
}];
-(void) saveimageindocument:(NSData*) imageData withimagename:(NSString*)imagename{
NSString *writePath = [NSString stringWithFormat:@"%@/%@.png",[Utility getDocumentDirectory],imagename];
if (![imageData writeToFile:writePath atomically:YES]) {
// failure
NSLog(@"image save failed to path %@", writePath);
} else {
// success.
NSLog(@"image save Successfully to path %@", writePath);
}
}
+ (NSString*)getDocumentDirectory {
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
return [paths objectAtIndex:0];
}
Check image that landscape mode or portrait mode 检查横向模式或纵向模式的图像
if (chooseimage.size.height >= chooseimage.size.width)
{
Islandscape = NO;
}else{
UIImage* landscapeImage = [UIImage imageWithCGImage:chooseimage.CGImage
scale:chooseimage.scale
orientation:UIImageOrientationLeft];
self.imgPreviewView.image = landscapeImage;
self.imgPreviewView.contentMode = UIViewContentModeScaleAspectFill;
Islandscape = YES;
}
Add this permission into info.plist file 将此权限添加到info.plist文件中
<key>NSPhotoLibraryUsageDescription</key>
<string>$(PRODUCT_NAME) would like to access your photo library to let you select a picture.</string>
You can get the imageURL from PHContentEditingInput : 您可以从PHContentEditingInput获取imageURL:
Swift: 迅速:
asset.requestContentEditingInput(with: PHContentEditingInputRequestOptions()) { (eidtingInput, info) in
if let input = eidtingInput, let imgURL = input.fullSizeImageURL {
// imgURL
}
}
Objective-C: Objective-C的:
[asset requestContentEditingInputWithOptions:[PHContentEditingInputRequestOptions new] completionHandler:^(PHContentEditingInput *contentEditingInput, NSDictionary *info) {
NSURL *imageURL = contentEditingInput.fullSizeImageURL;
}];
//This is the Complete Swift Code of getting image URL with PHAsset answer of Himanshu Moradiya //这是使用Himanshu Moradiya的PHAsset答案获取图像URL的完整Swift代码
let imageRequestOptions = PHImageRequestOptions()
PHImageManager.default().requestImageData(for: currentAsset, options: imageRequestOptions, resultHandler: { imageData, dataUTI, orientation, info in
if let info = info {
print("info = \(info)")
}
if info?["PHImageFileURLKey"] != nil {
let path = info?["PHImageFileURLKey"] as? URL
print(path) //here you get complete URL
// if you want to save image in document see this.
// self.saveimageindocument(imageData, withimagename: "DEMO")
}
})
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