Android绘制一条边为弧形的矩形

这个标题可能有语法错误，

效果就是下图：

利用Android canvas绘图实现；

package com.example.demo.practice.ui;import android.annotation.SuppressLint;import android.content.Context;import android.graphics.Canvas;import android.graphics.Paint;import android.graphics.RectF;import android.util.AttributeSet;import android.util.Log;import android.view.View;/** * Created by hanbo on 2018-01-11. */public class IArcView extends View {    private static String TAG = "自定义绘图";    public IArcView(Context context, AttributeSet attrs) {        super(context, attrs);    }    public IArcView(Context context) {        super(context);    }    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        setMeasuredDimension(widthMeasureSpec, heightMeasureSpec);        super.onMeasure(widthMeasureSpec, heightMeasureSpec);    }    @Override    protected void onDraw(Canvas canvas) {        float width = getWidth();        float height = getHeight();        super.onDraw(canvas);        Paint paint = new Paint();        paint.setColor(StringToColor("#394263"));        paint.setStrokeWidth(1);        paint.setAntiAlias(true);        paint.setStyle(Paint.Style.FILL);        RectF rectF = new RectF(0, 0, width, height);        RectF bottom = new RectF(0, height/2, width, height);        // 画弧形        canvas.drawArc(rectF, -180, 180, false, paint);        // 画底部矩形        canvas.drawRect(bottom,paint);        //圆弧描边        paint.setColor(StringToColor("#646e91"));        paint.setStyle(Paint.Style.STROKE);        canvas.drawArc(rectF, -180, 180, false, paint);    }    /**     * #颜色转16进制颜色     *     * @param str {String} 颜色     * @return     */    private int StringToColor(String str) {        return 0xff000000 | Integer.parseInt(str.substring(2), 16);    }}

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