IOS在Document目錄下創建文件夾、保存、讀取、以及刪除文件

    //  在Documents目錄下創建一個名為LaunchImage的文件夾
    NSString *path = [[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"] stringByAppendingPathComponent:@"LaunchImage"];
    NSLog(@"%@",path);
    
    NSFileManager *fileManager = [NSFileManager defaultManager];
    BOOL isDir = FALSE;
    BOOL isDirExist = [fileManager fileExistsAtPath:path isDirectory:&isDir];
    if(!(isDirExist && isDir))
        
    {
        BOOL bCreateDir = [fileManager createDirectoryAtPath:path withIntermediateDirectories:YES attributes:nil error:nil];
        if(!bCreateDir){
            NSLog(@"創建文件夾失敗！");
        }
        NSLog(@"創建文件夾成功，文件路徑%@",path);
    }
    
    UIImage *image=[UIImage imageWithContentsOfFile:@"testimage.png"];
    NSData *data = UIImagePNGRepresentation(image);
    //將testimage.png保存到LaunchImage文件夾下，新名稱為image1.png
         BOOL isSaved=   [fileManager createFileAtPath:[path stringByAppendingString:@"/image1.png"] contents:data attributes:nil];
    NSLog(@"圖片保存狀態：%d",isSaved);
    
    //獲取保存的圖片
    UIImage *newimage=[UIImage imageWithContentsOfFile:[path stringByAppendingString:@"/image1.png"]];
   
//   刪除文件
     BOOL isDelete=[fileManager removeItemAtPath:path error:nil];
    NSLog(@"%d",isDelete);