TextView添加渐变和阴影

Question

我有个问题.我想要一个带有渐变颜色的textview.它背后有一个黑色的影子.问题是阴影使用渐变的颜色而不是使用被调用的颜色(Color.BLACK)

我的代码是: numberTextView = (TextView)findViewById(R.id.something);

    Shader textShaderTop = new LinearGradient(0, 30, 0, 60,
                new int[]{Color.parseColor("#A6A6A6"), Color.parseColor("#E8E8E8"), Color.parseColor("#A6A6A6")},
                new float[]{0, 0.5f, 1}, TileMode.CLAMP);
    numberTextView.getPaint().setShader(textShaderTop);

    numberTextView.setShadowLayer(
              0.1f,   //float radius
              20f,  //float dx
              20f,  //float dy 
              Color.BLACK //this is not black on the screen, but it uses the gradient color!?
              );

有谁知道该怎么做

Answer 1

我有完全相同的问题.我设法通过扩展TextView和重写onDraw方法来修复它.这是它的样子

@Override
protected void onDraw(Canvas canvas) {
    // draw the shadow
    getPaint().setShadowLayer(1, 1, 1, 0xbf000000); // or whatever shadow you use
    getPaint().setShader(null);
    super.onDraw(canvas);

    // draw the gradient filled text
    getPaint().clearShadowLayer();
    getPaint().setShader(new LinearGradient(0, getHeight(), 0, 0, 0xffacacac, 0xffffffff, TileMode.CLAMP)); // or whatever gradient/shader you use
    super.onDraw(canvas);
}

但是,如果要在渐变中使用具有透明度的颜色,则此方法可能无效.