找到動態創建的Imageview的高度和寬度？

Question

1. LayoutParams params = new FrameLayout.LayoutParams（ LayoutParams.MATCH_PARENT，LayoutParams.MATCH_PARENT）;

imageView mainimage = new ImageView（HLActivity.this）; mainimage.setLayoutParams（params）;

loader.DisplayImage(_pageslist.get(j).getUrl(), mainimage); 

我已經嘗試mainimage.getwidth（）和mainimage.getHeight（）;

現在我想以後 發生在imageview的形象，findout的的ImageView的orignalwidth和高度。你能幫我麼。

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Answer 1

getWidth()和getHeight()你正在尋找確實的，但您要問的寬度和視圖時尚未測量的高度。爲了解決這個問題，我們發佈一條消息給ImageView，它將在測量完成後執行。

LayoutParams params = new FrameLayout.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); 
// mark it as final, so it can be accessed in the runnable. 
final imageView mainimage = new ImageView(HLActivity.this); 
mainimage.setLayoutParams(params); 
mainimage.post(new Runnable() { 

    @Override 
    public void run() { 
     // get the width and the height 
     int width = mainimage.getWidth(); 
     int height = mainimage.getHeight(); 
     // do what you want to do with the sizes. 
     loader.DisplayImage(_pageslist.get(j).getUrl(), mainimage); 
    } 
});