如何在onDraw方法之外使用canvas？

Question

I need to draw something on the same canvas that onDraw() get access to.

This works fine as long as I am inside OnDraw(), but I don't know how to get that canvas when I'm outside.

Thanks for any suggestions.

@Override
protected void onDraw(Canvas canvas) {
    canvas.doSomething  // works fine
}

//new method to draw omething on the same canvas
mydraw(how to get canvas in here?){}

Answer 1

onDraw由系统调用，你应该在那里调用你的绘图，你总是可以将Canvas作为参数传递给你的myDraw方法

Answer 2

You can try to send canvas to your own method:

@Override
protected void onDraw(Canvas canvas) {
    yourMethod(canvas);
}

void yourMethod(Canvas canvas){
    //TODO
    //your code goes here
}