android - 如何在android上获取按钮的背景颜色？

Question

我想获取按钮的颜色。我无法从返回可绘制对象的 getbackground 函数中获取颜色。我使用 getsolidcolor 返回整数值但它一直是 0(零).. 我不明白问题出在哪里。也许它不是真正的功能..

这是我的安卓代码

            int renk = btn1.getSolidColor();

        if(renk== Color.GREEN)
            Toast.makeText(getApplicationContext(), "green" , 1000).show();
        else if(renk== Color.RED)
            Toast.makeText(getApplicationContext(), "red" , 1000).show();
        else if(renk== Color.YELLOW)
            Toast.makeText(getApplicationContext(), "yellow" , 1000).show();
        else
            Toast.makeText(getApplicationContext(), "unknown", 1000).show();

        btn1.setBackgroundColor(Color.YELLOW);
     renk = btn1.getSolidColor();


        if(renk== Color.GREEN)
            Toast.makeText(getApplicationContext(), "green" , 1000).show();
        else if(renk== Color.RED)
            Toast.makeText(getApplicationContext(), "red" , 1000).show();
        else if(renk== Color.YELLOW)
            Toast.makeText(getApplicationContext(), "yellow" , 1000).show();
        else
            Toast.makeText(getApplicationContext(), "unknown", 1000).show();

即使我将背景设置为黄色，我也只是收到未知的 toast 消息..

Answer 1

给你....

 Button myButton = (Button) findViewById(R.id.takePicture);

 myButton.setBackgroundDrawable(new PaintDrawable(Color.YELLOW));

 PaintDrawable drawable = (PaintDrawable) myButton.getBackground();

 int color = drawable.getPaint().getColor();