android - 如何在 Android 中设置红色 TextView 的删除线

Question

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Answer 1

制作一个自定义的TextView

    class CustomTextView extends TextView {
            public Paint paint;
            public boolean addStrike = false;
    public CustomTextView(Context context, AttributeSet attrs) {
    super(context, attrs);
}
        public CustomTextView(Context context) {
            super(context);
            init(context);
        }

        public CustomTextView(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);
            init(context);
        }

        private void init(Context context) {
            paint = new Paint();
            paint.setColor(Color.RED);
            paint.setStrokeWidth(getResources().getDisplayMetrics().density * 1);
        }

        @Override
        protected void onDraw(Canvas canvas) {
            // TODO Auto-generated method stub
            super.onDraw(canvas);
            if (addStrike) {
                canvas.drawLine(0, getHeight() / 2, getWidth(),
                        getHeight() / 2, paint);
            }
        }

    }

为了添加 stoke 你可以调用

myCustomTextView.addStrike = true;
myCustomTextView.invalidate();

要取消罢工，您只需调用

myCustomTextView.addStrike = false;
myCustomTextView.invalidate();