IOS 圖片轉換二進位 二進位轉換為圖片

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//類方法  圖片 轉換為二進位+(NSData *)Image_TransForm_Data:(UIImage *)image{    NSData *imageData = UIImageJPEGRepresentation(image , 0.5);
    //幾乎是按0.5圖片大小就降到原來的一半 比如這裡 24KB 降到11KB    return imageData;}//調用方法舉例-(void)viewWillAppear:(BOOL)animated{    [self Read_ImageData];}- (void)viewDidLoad{     nav_View=[[NavView alloc]init];    [self.view addSubview: [nav_View NavView_Title:@"通告"]];    [super viewDidLoad];    [self Read_ImageData];}//以下方法 就是把一圖片壓縮成二進位 再轉換成圖片做顯示 效果 不錯-(void)Read_ImageData{    UIImageView *imageView1=[[UIImageView alloc]initWithFrame:CGRectMake(0, 80, 200, 200)];    imageView1.image=[UIImage imageNamed:@"cat_food.png"];    [self.view addSubview:imageView1];         UIImageView *imageView3=[[UIImageView alloc]initWithFrame:CGRectMake(0, 280, 200, 200)];    imageView3.image=[UIImage imageWithData:[Function Image_TransForm_Data:imageView1.image] ];    [self.view addSubview:imageView3];    NSData *data = [NSData dataWithData:[Function Image_TransForm_Data:imageView1.image ]];    [data writeToFile:[Function CreateTheFolder_From:Library_Cache FileHolderName:MyFolder FileName:@"pp111111.png"] atomically:YES];}

：如下

能看到一點被壓縮品質的細節是不是 還好哈哈