Question

I m trying to display values that a user enters on an image, there are 4 versions of image (ldpi, mdpi, hdpi and xhdpi). I want to position the textViews on a "fixed" location that adjusts to the right screensize.

有没有人建议我如何实现这个目标?

这是我要做的事的草图

< a href=" "http://dl.dropbox.com/u/251/053/stackoverflow.png" rel="nofollow" >http://dl.dropbox.com/u/251/053/stackoverflow.png

edit

Thanks for the fast responses. Uploaded a new image, this isn t possible with relative layout I guess?

http://dl.droppox.com/u/251/053/stackoverflow1.png

Answer 1

查看“实时拉尤特”文件:http://developer.android.com/reference/android/widget/RelativeLayoot.html

您可以将您的文本View 围绕您的图像View 。

Answer 2

解决这个问题的最佳方式是建立自定义版面, 期望图像视图成为第一个孩子。

其它所有的孩子都将是文本视图您也可以:

position relatively to the position of your ImageView
position proportionally to the height/width of your parent custom layout that matches the height/width of your ImageView

儿童文本查看 s 的左/上方位置信息可以通过适合您需要的自定义版式Params 类来提供。

Answer 3

我认为最好的方法是通过扩展“ 视图” 类来创建自定义视图。它不那么复杂。 < a href=" http:// developmenter.android.com/guide/potics/ ui/ customis- particults. html" rel=“ nofollow” >这里您可以找到更多关于自定义 UI 组件的信息。

The main idea is to override onDraw(Canvas canvas) and onMeasure(int widthMeasureSpec, int heightMeasureSpec) methods. In onMeasure you should return the dimensions of your view and also you may calculate the size and angle of the rectangle and also the size of text you want to draw. Or you can implement custom resize() method that will be called explicitly on you view from the activity and make text and image calculations.

当您知道所有测量数据时, 您可以在 Draw( Canvas corrack) 方法中定位并绘制图像和文字。

@Override
    protected void onDraw(Canvas canvas) {

    myImageDrawable.setBounds(0,0,50,50);
    myImageDrawable.draw(canvas);

    canvas.drawText(myText, 10, 10, myTextPaint);
}

You can find more info about Canvas class here. Also you may use StaticLayout to measure text.

友情链接