自定义视图扩展了视图类，但仍基于XML布局 [英] Custom View extending the View-Class but still based on a XML-Layout

问题描述

我想构建自己的自定义视图，看起来像Crysis-GUI。

I want to build my own custom view which should look like the Crysis-GUI.

首先，我设计了一个基于XML的布局，并通过setContentView（int resid）-方法。效果很好。

At first I designed a XML-based Layout and made it visible via the setContentView(int resid)-Method. Worked pretty well.

但是现在我不愿再走一步来绘制布局了。因此，我创建了一个新的类，让它扩展View并覆盖onDraw（）-Method。到现在为止还挺好。

But now I wan't to go a step further and draw in my Layout. So I created a new Class, let it extend View and overrode the onDraw()-Method. So far so good. Works as expected

public class RifleView extends View {

public RifleView(Context context) {
    super(context);
}

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    Paint p = new Paint();
    p.setARGB(255, 255, 0, 0);
    canvas.drawText("Hello World", 20, 20, p);
}

}

但是，如何仍可以使用XML布局？我不能再使用setContentView，那么如何达到相同的效果？

But how can I still use my XML-Layout? I can't do setContentView anymore, so how could the same effect be achieved?

推荐答案

为什么不能使用setContentView？只需像这样创建一个xml标签：< com.mycompany.mypackage.myComponent ... xml为标签添加一个< /com.mycompany.mypackage.myComponent>

Why can't you use setContentView ? Just make an xml tag like that : <com.mycompany.mypackage.myComponent ... xml attributes an tags </com.mycompany.mypackage.myComponent>

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