如何在android中使用xml布局创建弧形进度条，而不需要额外的库？

public class ArcProgressBar extends View {
    private Paint paint;
    private RectF rectF;
    private float progress;

    public ArcProgressBar(Context context) {
        super(context);
        init();
    }

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

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

    private void init() {
        paint = new Paint();
        paint.setAntiAlias(true);
        paint.setStyle(Paint.Style.STROKE);
        paint.setStrokeWidth(10);
        paint.setColor(Color.BLUE);
        rectF = new RectF();
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        float angle = 360 * progress / 100;
        canvas.drawArc(rectF, -90, angle, false, paint);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        int width = MeasureSpec.getSize(widthMeasureSpec);
        int height = MeasureSpec.getSize(heightMeasureSpec);
        int size = Math.min(width, height);
        rectF.set(10, 10, size - 10, size - 10);
        setMeasuredDimension(size, size);
    }

    public void setProgress(float progress) {
        this.progress = progress;
        invalidate();
    }
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <com.example.myapplication.ArcProgressBar
        android:id="@+id/arcProgressBar"
        android:layout_width="200dp"
        android:layout_height="200dp" />

</LinearLayout>

public class MainActivity extends AppCompatActivity {
    private ArcProgressBar arcProgressBar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        arcProgressBar = findViewById(R.id.arcProgressBar);
        arcProgressBar.setProgress(50);
    }
}