Android TextView 自定义字体粗细

继承TextView 重写onDraw，在super.onDraw(canvas)方法前修改画笔宽度

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

    public BoldTextView(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    public BoldTextView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        //获取当前控件的画笔
        TextPaint paint = getPaint();
        //设置画笔的描边宽度值
        paint.setStrokeWidth(2.2f);
        paint.setStyle(Paint.Style.FILL_AND_STROKE);
        super.onDraw(canvas);
    }
}