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2013/05/30

[iOS] UIImageView & UIImage

我是UIImageView,我負責將圖片顯示在畫面上。



我是UIImage,我負責從檔案中載入圖片的資料




UIImageView說:哦,那我們合作吧,你載入圖片資料,我在依你載入的資料顯示圖片在畫面上。






第1步:建立一個名為"UIImageView_UIImage"的"Single View Application"專案



第2步:將"apple.png"透過拖拉或以"Add File"的功能將"apple.png"加至專案中




 

第3步:拖拉UIImageView至畫面中
 

 




第4步:建立UIImageView的IBOutlet物件參考於ViewController中
  • 4.1 對UIImageView按右鍵,按任"New Referencing Outlet"右邊的圓點,並拖拉至ViewController類別中

































  • 4.2 於"Name"欄位輸入"imageView",並按下"Connect"


































  • 4.3 確認imageView Outlet建立完成


































第5步:於"ViewController.m"實作檔中的viewDidLoad方法中,透過UIImage載入apple.png檔案,在交由imageView顯示圖片


- (void)viewDidLoad
{
    [super viewDidLoad];
    

    //透過UIImage載入apple.png
    UIImage *image = [UIImage imageNamed:@"apple.png"];
    //在透過UIImageViewimage屬性,載入UIImageUIImageView中,以顯示圖片
    self.imageView.image = image;

}



第6步:執行程式,圖片以透過UIImageView顯示圖片了





檔案連結:UIImageView_UIImage.zip