Ich habe eine benutzerdefinierte Ansicht, in der ich einen großen Kreis und einen kleinen Kreis am Rand dieses großen Kreises zeichne.

Ich möchte den kleinen Kreis verschieben und möchte daher einen On-Touch-Listener nur für den kleinen Kreis haben.

Könnten Sie mir bitte sagen, wie ich den Intouch-Listener nur für den kleinen Kreis einstellen soll?

public class ThermoView extends View{

    private ImageView mThermostatBgrd;
    private ImageView mCurTempArrow;
    private ImageView mSetPointIndicator;
    public static final int THEMROSTAT_BACKGROUND = 0;
    public static final int THEMROSTAT_CURR_TEMP = 1;
    public static final int THEMROSTAT_SET_POINT = 2;

    private float mViewCentreX;
    private float mViewCentreY;
    private float mThermostatRadius;

    private Canvas mCanvas;
    private Paint mPaint;
    private Paint mPaintCurTemp;
    private Paint mPaintSetTemp;
    private Paint mPaintOverrideTemp;
    private Paint mPaintCurTempIndicator;

    private Boolean mManualOverride = false;
    private double mManualOverrideAngle;

    private int mMaxTemp = 420;
    private int mMinTemp = 120;

    private RectF mCurrTempBox;
    private float mCurTempCircleX;
    private float mCurTempCircleY;
    private Matrix mMatrix;



    public double getManualOverrideAngle() {
        return mManualOverrideAngle;
    }

    public void setManualOverrideAngle(double mManualOverrideAngle) {
        this.mManualOverrideAngle = mManualOverrideAngle;
    }

    public RectF getCurrTempBox() {
        if (mCurrTempBox == null){
            mCurrTempBox = new RectF();
        }
        return mCurrTempBox;
    }

    public void setCurrTempBox(RectF mCurrTempBox) {
        this.mCurrTempBox = mCurrTempBox;
    }


    public Boolean getManualOverride() {
        return mManualOverride;
    }

    public void setManualOverride(Boolean mManualOverride) {
        this.mManualOverride = mManualOverride;
    }

    public ThermoView(Context context, AttributeSet attrs) {
        super(context, attrs);

    }



    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        Path smallCirle = new Path();
        int viewWidth = getMeasuredWidth();
        int viewHeight = getMeasuredHeight();
        mViewCentreX = viewWidth/2;
        mViewCentreY = viewHeight/2;
        float paddingPercent = 0.2f;
        int thermostatThickness = 20;
        mThermostatRadius = (int) ((Math.min(mViewCentreX, mViewCentreY)*(1- paddingPercent))); 

        if (mPaint == null){
            mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        }
        mPaint.setStyle(Paint.Style.STROKE);
        mPaint.setStrokeWidth(thermostatThickness);

        mPaint.setColor(0xffff0000); 

        Path arcPath = new Path();

        RectF container = new RectF();
        container.set(mViewCentreX - mThermostatRadius, mViewCentreY - mThermostatRadius, 
                                    mViewCentreX + mThermostatRadius, mViewCentreY + mThermostatRadius);
        arcPath.addArc(container, 120, 300);
        canvas.drawPath(arcPath, mPaint);



        int dummyCurTemp = 200;
        if (mPaintCurTemp == null){
            mPaintCurTemp = new Paint(Paint.ANTI_ALIAS_FLAG);
        }
        mPaintCurTemp.setTextAlign(Align.CENTER);
        mPaintCurTemp.setTextSize(100);
        canvas.drawText(String.valueOf(dummyCurTemp), mViewCentreX, mViewCentreY, mPaintCurTemp);


        if (this.mManualOverride == false){

            double angle = (360-120-(300/(mMaxTemp - mMinTemp))*(dummyCurTemp-mMinTemp))*(Math.PI/180);

            this.mCurTempCircleX = (float) (mViewCentreX + mThermostatRadius*(Math.cos(angle)));
            this.mCurTempCircleY = (float) (mViewCentreY - mThermostatRadius*(Math.sin(angle)));

            if (mCurrTempBox == null){
                mCurrTempBox = new RectF();
            }
            if (mPaintCurTempIndicator == null){
                mPaintCurTempIndicator = new Paint(Paint.ANTI_ALIAS_FLAG);
            }


            mPaintCurTempIndicator.setStyle(Paint.Style.STROKE);
            mPaintCurTempIndicator.setStrokeWidth(thermostatThickness/2);
            mPaintCurTempIndicator.setColor(Color.GREEN);
            mCurrTempBox.set(mCurTempCircleX-50, mCurTempCircleY-50, mCurTempCircleX+50, mCurTempCircleY+50);
            smallCirle.addCircle(mCurTempCircleX, mCurTempCircleY, 50, Direction.CW);
            canvas.drawPath(smallCirle, mPaintCurTempIndicator);





        }else{



            if (mCurrTempBox == null){
                mCurrTempBox = new RectF();
            }
            if (mPaintCurTempIndicator == null){
                mPaintCurTempIndicator = new Paint(Paint.ANTI_ALIAS_FLAG);
            }
            if (mMatrix == null){
                mMatrix = new Matrix();
            }
            //mMatrix.reset();


            mMatrix.postRotate((float) (mManualOverrideAngle), mViewCentreX,mViewCentreY);

            //mMatrix.postTranslate(mViewCentreX, mViewCentreY);
            mPaintCurTempIndicator.setStyle(Paint.Style.STROKE);
            mPaintCurTempIndicator.setStrokeWidth(thermostatThickness/2);
            mPaintCurTempIndicator.setColor(Color.GREEN);



            canvas.concat(mMatrix);

            smallCirle.addCircle(mCurTempCircleX, mCurTempCircleY, 50, Direction.CW);
            canvas.drawPath(smallCirle, mPaintCurTempIndicator);


        }





    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
                    switch (event.getAction()) {

                case MotionEvent.ACTION_DOWN:


                    mInitialX = event.getX();
                    mInitialY = event.getY();

                    RectF touchedAt = new RectF(mInitialX-10, mInitialY-10, mInitialX+10, mInitialY+10);
                    RectF indicatorAt = mThermoStatView.getCurrTempBox();
                    if (RectF.intersects(indicatorAt, touchedAt)){
                        this.isIndicatorSelected = true;
                        mThermoStatView.setManualOverride(true);

                    }
                    break;

                case MotionEvent.ACTION_MOVE:

                    if (this.isIndicatorSelected == true){

                        float angle = (float) (180*Math.atan2(event.getY() - mThermostatHeight/2, event.getX() - mThermostatWidth/2) / Math.PI);
                        mThermoStatView.setManualOverrideAngle(angle);
                        mThermoStatView.invalidate();
                        //mThermoStatView.requestLayout();


                    }
                    break;

                case MotionEvent.ACTION_UP:
                    if (this.isIndicatorSelected == true){
                        this.isIndicatorSelected = false;

                    }
                    break;
            }


            return true;


    }
}