iOS 圖片的儲存以及讀取和刪除

標籤：

將圖片儲存到本地

 NSArray *dirArray = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);            NSString *path = [dirArray firstObject];            path = [path stringByAppendingPathComponent:[NSString stringWithFormat:@"IDCARD%zd",_selectIndex]];            NSData *imageData = UIImageJPEGRepresentation(image, 1.0);            [imageData writeToFile:path atomically:YES];

圖片的存到本地之後的讀取

 NSArray *dirArray = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);        NSString *path = [dirArray firstObject];        path = [path stringByAppendingPathComponent:[NSString stringWithFormat:@"IDCARD%zd",i]];        if([[NSFileManager defaultManager] fileExistsAtPath:path]){            NSData *picData = [NSData dataWithContentsOfFile:path];            view.idCardImageView.image = [UIImage imageWithData:picData];            }

將儲存到本地的圖片刪除

 NSArray *dirArray = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);        NSString *path = [dirArray firstObject];        path = [path stringByAppendingPathComponent:[NSString stringWithFormat:@"IDCARD%zd",i]];        if([[NSFileManager defaultManager] fileExistsAtPath:path])//如果存在臨時檔案的設定檔        {            [[NSFileManager defaultManager]  removeItemAtPath:path error:nil];        }

iOS 圖片的儲存以及讀取和刪除