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我阅读了文档,但无法做出转换。事件的流程应该是什么样的?谁叫谁?Android图形:TransitionDrawable如何工作?
假设我想要一个活动调用init()来画线a,然后调用去5秒过渡到b线。我该怎么做这个代码?
public class Fun extends View
{
Drawable a;
Drawable b;
TransitionDrawable t;
public Fun(Context context)
{
super(context);
a = new LineA();
b = new LineB();
Drawable ray[] = {a,b};
t = new TransitionDrawable(ray);
}
@Override
protected void onDraw(Canvas canvas)
{
t.draw(canvas);
}
public void init()
{
t.resetTransition();
}
public void go()
{
t.startTransition(5000);
}
谢谢!