问题描述
- iPhone-从文件夹中显示图片
-
显示保存在文件夹中的图片。只返回了文件名字,没显示。NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString*patientlastName; NSString*test=@"nicej"; patientlastName=[test stringByReplacingOccurrencesOfString:@" " withString:@""]; NSString * filePath = [NSString stringWithFormat:@"%@/Documents//%@.png", NSHomeDirectory(),patientlastName]; BOOL fileExists = [[NSFileManager defaultManager] fileExistsAtPath:filePath]; if (fileExists == 0) { NSLog(@"File is Not exists"); appDelegate.imageURL=@"File Not Exists"; } NSString *userfile=[NSString stringWithFormat:@"%@",patientlastName]; appDelegate.imageURL=userfile; PictureDisplayViewController *targetController = [[PictureDisplayViewController alloc] initWithNibName:@"PictureDisplayViewController" bundle:nil]; targetController.modalPresentationStyle = UIModalPresentationFullScreen; [self.splitViewController presentViewController:targetController animated:YES completion:nil];
PictureDisplayViewController中:
imageView.image=[UIImage imageNamed:@"nicej.png"];
解决方案
保存图片路径:
NSFileManager *fileMan = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *str= [NSString stringWithFormat:@"%@.png",patientlastName];
NSString *Image_filePath=[documentsDirectory stringByAppendingPathComponent:str];
NSData *imagedata=UIImagePNGRepresentation(yourimage);
[fileMan createFileAtPath:[Image_filePath stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] contents:imagedata attributes:nil];
获取图片路径:
NSString* fileName = [NSString stringWithFormat:@"%@.png",patientlastName}
NSArray *arrayPaths =
NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory,
NSUserDomainMask,
YES);
NSString *path = [arrayPaths objectAtIndex:0];
NSString* pdfFileName = [path stringByAppendingPathComponent:fileName];
UIImage *image1=[UIImage imageWithContentsOfFile:pdfFileName];
imageView.image=image1;
时间: 2024-12-02 16:39:41