iPhone-从文件夹中显示图片
问题描述：
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"];
答
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;