Android 以编程方式设置自定义视图的高度和宽度 [英] Android set height and width of Custom view programmatically

问题描述

我创建了一个名为 Graphview 的自定义视图.这是 GraphView 类的结构.

I have created a custom view named Graphview . Here is the structure for the GraphView class.

public class GraphView extends View {

    public GraphView(Context context, float[] values, String title, String[] horlabels, String[] verlabels, boolean type) {
        super(context);
                ........
   }

   ..................
   .................
}

我使用 addview() 在表格行中添加了视图.它工作正常.现在我想为 GraphView 设置高度和宽度.怎么做?

I have added the view in a tablerow using addview(). It is working fine. Now I want to set height and width for the GraphView. How to do that?

推荐答案

如果您知道视图的确切大小，只需使用 setLayoutParams():

If you know the exact size of the view, just use setLayoutParams():

graphView.setLayoutParams(new LayoutParams(width, height));

或者在 Kotlin 中:

Or in Kotlin:

graphView.layoutParams = LayoutParams(width, height)

但是，如果您需要更灵活的方法，您可以重写 onMeasure() 以根据可用空间和布局约束更精确地测量视图 (wrap_content, match_parent，或固定大小).您可以在 android 文档.

However, if you need a more flexible approach you can override onMeasure() to measure the view more precisely depending on the space available and layout constraints (wrap_content, match_parent, or a fixed size). You can find more details about onMeasure() in the android docs.

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