写出 文件 iOS

 

    //1,写出文件 , 图片格式

    NSData *imageData = UIImageJPEGRepresentation(newImg, 0);

    NSString *path =[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingString:@"image.png"];

    [imageData writeToFile:path atomically:YES];