找到动态创建的Imageview的高度和宽度？

Question

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

ImageView的     mainimage = new ImageView（HLActivity.this）;     mainimage.setLayoutParams（PARAMS）;

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

我已经尝试过mainimage.getwidth（）和mainimage.getHeight（）;

现在我想知道之后ImageView的orignalwidth和高度     将图像放在imageview中。能帮帮我吗。

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Answer 1

getWidth()和getHeight()确实是您正在寻找的，但是当您还没有测量视图时，您正试图询问宽度和高度。为了解决这个问题，我们向ImageView发布了一条消息，该消息将在测量完成后执行。

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);
    }
});