具有背景颜色和行距的 TextView [英] TextView with background color and line spacing

问题描述

我想显示如下文本...

I'd like to show the text like the below...

我的编码如下:

SpannableString sText = new SpannableString(text);
sText.setSpan(new BackgroundColorSpan(Color.YELLOW), 0, sText.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);

holder.txtText.setLineSpacing(0, 1.5f);
textView.setText(sText);

推荐答案

试试这个.创建自定义 TextView 并覆盖方法 draw(Canvas canvas).

try this. Create custom TextView and override method draw(Canvas canvas).

public class BgColorTextView extends TextView {
    public BgColorTextView(Context context) {
        super(context);
    }

    public BgColorTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public BgColorTextView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    public BgColorTextView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    @Override
    public void draw(Canvas canvas) {
        int lineCount = getLayout().getLineCount();
        Rect rect = new Rect();
        Paint paint = new Paint();
        paint.setColor(getResources().getColor(R.color.YOUR_CUSTOM_COLOR));
        for (int i = 0; i < lineCount; i++) {
            rect.top = (getLayout().getLineTop(i));
            rect.left = (int) getLayout().getLineLeft(i);
            rect.right = (int) getLayout().getLineRight(i);
            rect.bottom = (int) (getLayout().getLineBottom(i) - ((i + 1 == lineCount) ? 0 : getLayout().getSpacingAdd()));

            canvas.drawRect(rect, paint);
        }
        super.draw(canvas);
    }
}

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