photolibrary

问题 Is there a way to get the file size on disk of a PHAsset without doing requestImageDataForAsset or converting it to ALAsset ? I am loading in previews of a user's photo library - potentially many thousands of them - and it's imperative to my app that they know the size before import. 回答1: You can grab the fileSize of a PHAsset and convert it to human readable form like this: let resources = PHAssetResource.assetResources(for: yourAsset) // your PHAsset var sizeOnDisk: Int64? = 0 if let

问题 Is there a way to get the file size on disk of a PHAsset without doing requestImageDataForAsset or converting it to ALAsset ? I am loading in previews of a user's photo library - potentially many thousands of them - and it's imperative to my app that they know the size before import. 回答1: You can grab the fileSize of a PHAsset and convert it to human readable form like this: let resources = PHAssetResource.assetResources(for: yourAsset) // your PHAsset var sizeOnDisk: Int64? = 0 if let

问题 Using PhoneGap(Cordova), Am trying to get base64 image data of the photo chosen from the photo library. I could do that.. when the photo is captured from camera, With the below snippet of code in Cordova. navigator.camera.getPicture(onSuccess, onFail, { quality: 50, destinationType: Camera.DestinationType.DATA_URL }); function onSuccess(imageData) { var image = document.getElementById('myImage'); image.src = "data:image/jpeg;base64," + imageData; } function onFail(message) { alert('Failed

问题 I am creating an iPad app that has several pictures ( UIImageViews ) in a horizontal scrollview. I want to allow the user to be able to save the images to their Photo Library when they tap on one of the UIImageView s. I like the way Safari handles this matter: you just tap and hold until a pop up menu appears and then click save image. I know there is the " UIImageWriteToSavedPhotosAlbum ". But I am a newbie to iOS development and I'm not too sure where to go with it and where to put it (i.e.

问题 I'm working with an application in which I'm loading images from photolibrary. I'm using the following code for binding the image to imageView. -(void)loadImage:(UIImageView *)imgView FileName:(NSString *)fileName { typedef void (^ALAssetsLibraryAssetForURLResultBlock)(ALAsset *asset); typedef void (^ALAssetsLibraryAccessFailureBlock)(NSError *error); ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *myasset) { ALAssetRepresentation *rep = [myasset defaultRepresentation];

问题 i want to get the count of photos in photoLibrary. Currently, i'am able to get the photoes from photoLibrary and add to myApp's Document directry ONE BY ONE. But what i want is, save all the photos from photoLibrary to Document directry of myApp ALL AT ONCE. Thats why i need the count of photoes in photoLibrary. I've used UIImagePickerControllerSourceTypePhotoLibrary to retrieve the photoes from iPhone photoLibrary. Any help would be appreaciated.. thanks in advance.... 回答1: Use

问题 Ionic-3 Photo-library plugin crashes in iOS version 13. Works fine in iOS 12 version. Here is the log: 2019-09-30 12:03:03.878478+0530 destinate[453:135517] [core] "Error returned from daemon: Error Domain=com.apple.accounts Code=7 “(null)”" Fatal error: Unexpectedly found nil while unwrapping an Optional value: file /Volumes/Data/Projects/Destinate/destinate/platforms/ios/destinate/Plugins/cordova-plugin-photo-library/PhotoLibraryService.swift, line 314 2019-09-30 12:03:04.117471+0530

问题 I am using Cordova 5.3.3 and the Apache Camera Plugin 1.2.0 on IOS 9. I can succesfully take a picture with the camera however when I try to get a picture from photo library it goes back to camera and I get an error "has no access to assets" in the cordova error callback. I am using the following code. navigator.camera.getPicture(onSuccess, onFail, { quality: 75, destinationType: Camera.DestinationType.DATA_URL, sourceType : Camera.PictureSourceType.PHOTOLIBRARY }); When I check the the

问题 I'm using this code to render an image from view. Then i am saving it to photo album. The image is blurry? Why? Is there a solution? UIGraphicsBeginImageContext(self.view.bounds.size); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); Tnx all. 回答1: You are propably using a retina device, Change the following UIGraphicsBeginImageContext(self.view.bounds.size) to

问题 I have successfully added metadata to a jpg created within the app and saved it to the Camera Roll using the writeImageToSavedPhotosAlbum: metadata: completionBlock: method. However I would also like the option of emailing this jpg with the metadata (such as location, exit, etc.). I use this to email: MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init]; picker.mailComposeDelegate = self; NSData *myData = UIImageJPEGRepresentation(emailImage, 0.8); [picker