自定义View：

public class TargetView extends View {
    private Paint paint;
    private int[] radii = {100, 250, 400, 550, 700}; // 五个圆的半径
    private int numberOfSegments = 8;
    private int[][] regionValues; // 存储每个区域的值

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

    private void init() {
        paint = new Paint();
        regionValues = new int[5][numberOfSegments]; // 5个圆，每个圆8个区域
        for (int i = 0; i < 5; i++) {
            for (int j = 0; j < numberOfSegments; j++) {
                regionValues[i][j] = i * numberOfSegments + j + 1; // 示例值
            }
        }
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        drawCircles(canvas);
        drawSegments(canvas);
        drawSegmentValues(canvas);
    }

    private void drawCircles(Canvas canvas) {
        for (int radius : radii) {
            paint.setColor(Color.LTGRAY);
            canvas.drawCircle(getWidth() / 2, getHeight() / 2, radius, paint);
        }
    }

    private void drawSegments(Canvas canvas) {
        paint.setColor(Color.BLACK);
        for (int i = 0; i < numberOfSegments; i++) {
            float angle = (float) (Math.toRadians(360.0 / numberOfSegments * i));
            for (int radius : radii) {
                float startX = (float) (getWidth() / 2 + radius * Math.cos(angle));
                float startY = (float) (getHeight() / 2 + radius * Math.sin(angle));
                canvas.drawLine(getWidth() / 2, getHeight() / 2, startX, startY, paint);
            }
        }
    }

    private void drawSegmentValues(Canvas canvas) {
        paint.setColor(Color.BLACK);
        paint.setTextSize(40);
        paint.setTextAlign(Paint.Align.CENTER);
        for (int i = 0; i < regionValues.length; i++) {
            for (int j = 0; j < numberOfSegments; j++) {
                float angle = (float) (Math.toRadians(360.0 / numberOfSegments * j + 22.5)); // 中心角
                float centerX = (float) (getWidth() / 2 + radii[i] * Math.cos(angle) * 0.5);
                float centerY = (float) (getHeight() / 2 + radii[i] * Math.sin(angle) * 0.5);
                canvas.drawText(String.valueOf(regionValues[i][j]), centerX, centerY, paint);
            }
        }
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            float x = event.getX();
            float y = event.getY();
            int[] result = getRegionIndex(x, y);
            if (result != null) {
                int circleIndex = result[0];
                int segmentIndex = result[1];
                String position = getPosition(x, y);
                String message = "环: " + (circleIndex + 1) + ", 分割点: " + (segmentIndex + 1) + ", 位置: " + position;
                Toast.makeText(getContext(), message, Toast.LENGTH_SHORT).show();
            }
        }
        return true;
    }

    private int[] getRegionIndex(float x, float y) {
        float dx = x - getWidth() / 2;
        float dy = y - getHeight() / 2;
        double distance = Math.sqrt(dx * dx + dy * dy);

        for (int i = 0; i < radii.length; i++) {
            if (distance <= radii[i]) {
                for (int j = 0; j < numberOfSegments; j++) {
                    double angle = Math.toDegrees(Math.atan2(dy, dx));
                    if (angle < 0) angle += 360;
                    if (angle >= (360.0 / numberOfSegments) * j && angle < (360.0 / numberOfSegments) * (j + 1)) {
                        return new int[]{i, j}; // 返回圆的索引和分割区域索引
                    }
                }
            }
        }
        return null; // 点击不在任何区域内
    }

    private String getPosition(float x, float y) {
        String horizontal = (x < getWidth() / 2) ? "左" : "右";
        String vertical = (y < getHeight() / 2) ? "上" : "下";
        return horizontal + " " + vertical;
    }

TestActivity ： 

import android.os.Bundle;

import androidx.appcompat.app.AppCompatActivity;

public class TestActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(new TargetView(this));
        TargetView targetView = new TargetView(this);
        setContentView(targetView);

    }
}

build.gradle的module中dependencies 增加:

    implementation 'com.licheedev:android-serialport:2.1.3'

xml自定义布局引用：

    <com.所在包名.TargetView
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>