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, в то время как он должен быть центрирован. Это происходит только тогда, когда я дополнительно прокручиваю первую страницу:

Кодекс жеста:

 public class mainActivitySimpleOnGestureListener extends GestureDetector.SimpleOnGestureListener {

private int mViewpageX,mViewpageY,mViewpageWidth,mViewpageHeight;

public  void setViewPagePosition(int mViewpageWidth,int mViewpageHeight ){

    this.mViewpageWidth = mViewpageWidth*7/10;
    this.mViewpageHeight = mViewpageHeight*7/10;

    this.mViewpageX = (mViewpageWidth /2)-(mViewpageWidth*7/10/2 );
    this.mViewpageY = (mViewpageHeight /2)-(mViewpageHeight*7/10/2 );;

}

public static void setGestureDetectorTouchSlop(GestureDetector gestureDetector, int value) {
    try {
        Field f_mTouchSlopSquare = GestureDetector.class.getDeclaredField("mTouchSlopSquare");
        f_mTouchSlopSquare.setAccessible(true);
        f_mTouchSlopSquare.setInt(gestureDetector, value * value);
    } catch (NoSuchFieldException | IllegalAccessException | NullPointerException e) {
        Log.w(TAG, gestureDetector.toString(), e);
    }
}
public static void setGestureDetectorTouchSlop(GestureDetectorCompat gestureDetector, int value) {
    try {
        Field f_mImpl = GestureDetectorCompat.class.getDeclaredField("mImpl");
        f_mImpl.setAccessible(true);
        Object mImpl = f_mImpl.get(gestureDetector);
        if (mImpl == null) {
            Log.w(TAG, f_mImpl   " is null");
            return;
        }
        Class<?> c_GDCIJellybeanMr2 = null;
        Class<?> c_GDCIBase = null;
        try {
            c_GDCIJellybeanMr2 = Class.forName(GestureDetectorCompat.class.getName()   "$GestureDetectorCompatImplJellybeanMr2");
            c_GDCIBase = Class.forName(GestureDetectorCompat.class.getName()   "$GestureDetectorCompatImplBase");
        } catch (ClassNotFoundException ignored) {
        }
        if (c_GDCIJellybeanMr2 != null amp;amp; c_GDCIJellybeanMr2.isInstance(mImpl)) {
            Field f_mDetector = c_GDCIJellybeanMr2.getDeclaredField("mDetector");
            f_mDetector.setAccessible(true);

            Object mDetector = f_mDetector.get(mImpl);
            if (mDetector instanceof GestureDetector)
                setGestureDetectorTouchSlop((GestureDetector) mDetector, value);
        } else if (c_GDCIBase != null) {
            Field f_mTouchSlopSquare = c_GDCIBase.getDeclaredField("mTouchSlopSquare");
            f_mTouchSlopSquare.setAccessible(true);
            f_mTouchSlopSquare.setInt(mImpl, value * value);
        } else {
            Log.w(TAG, "not handled: "   mImpl.getClass().toString());
        }
    } catch (NoSuchFieldException | IllegalAccessException | NullPointerException e) {
        Log.w(TAG, gestureDetector.getClass().toString(), e);
    }
}

@Override
public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {

    //  Logger.v("onFling  "  "x:  " e1.getX()  "   y:  " e1.getY()  "x:  " e2.getX()  "   y:  " e2.getY()   );

    JudgeSendEvent("onFling",e1,e2);
    return super.onFling(e1, e2, velocityX, velocityY);
}

@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
    return super.onSingleTapConfirmed(e);
}

@Override
public boolean onDown(MotionEvent e) {

    //  Logger.v("onDown   "  "x:  " e.getX()  "   y:  " e.getY()   );
    JudgeSendEvent("onDown",e,null);
    return super.onDown(e);
}

//Determine whether to issue an event
private void JudgeSendEvent(String action,MotionEvent e1, MotionEvent e2) {
    switch (action) {
        case "onFling":

            if (e1.getX() < mViewpageX amp;amp; e1.getY() > mViewpageY amp;amp; e1.getY() < (mViewpageY   mViewpageHeight)) {
                if (e2.getX() - e1.getX() > 20) {
                    //   Logger.v(" 向右滑动   ");
                    EventBus.getDefault().post(new slideEvent(MotionEvent.ACTION_MOVE, "right"));   //  Send a message
                } else if (e1.getX() - e2.getX() > 20) {
                    //    Logger.v(" 向左滑动   ");
                    EventBus.getDefault().post(new slideEvent(MotionEvent.ACTION_MOVE, "left"));
                }

            } else if (e1.getX() > (mViewpageX   mViewpageWidth) amp;amp; e1.getY() > mViewpageY amp;amp; e1.getY() < (mViewpageY   mViewpageHeight)) {
                if (e2.getX() - e1.getX() > 20) {
                    EventBus.getDefault().post(new slideEvent(MotionEvent.ACTION_MOVE, "right"));
                    //  Logger.v(" 向右滑动   ");
                } else if (e1.getX() - e2.getX() > 20) {
                    //  Logger.v(" 向左滑动   ");
                    EventBus.getDefault().post(new slideEvent(MotionEvent.ACTION_MOVE, "left"));
                }
            }


            break;


        case "onDown":
//            Logger.v( "  onDown   " e1.getX() "   " e1.getY()
//             "n mViewpageX  " mViewpageX  "  mViewpageWidth  " mViewpageWidth
//              "n mViewpageY  " mViewpageY  "  mViewpageWidth  " mViewpageHeight);


            if (e1.getX() < mViewpageX amp;amp; e1.getY() > mViewpageY amp;amp; e1.getY() < (mViewpageY   mViewpageHeight)) {

                // Logger.v( "  onDown left "  );
                EventBus.getDefault().post(new slideEvent(MotionEvent.ACTION_DOWN, "left"));

            } else if (e1.getX() > (mViewpageX   mViewpageWidth) amp;amp; e1.getY() > mViewpageY amp;amp; e1.getY() < (mViewpageY   mViewpageHeight)) {
                EventBus.getDefault().post(new slideEvent(MotionEvent.ACTION_DOWN, "right"));
                //Logger.v( "  onDown right "  );
            }

            break;
    }

}
}
 

The zoomchange method:

  private void zoomchange() {
    Log.d("before","enlarge  "   thewidth   " ----  "   dm2.widthPixels);
    Log.d("before","enlarge  "   theheight   " ----  "   dm2.heightPixels);
    if (dm2.widthPixels - mViewPager.getWidth() < 5) {
        mViewPager.setPageMargin(fragConst.page_interval);
        //   Logger.v("缩小  "   thewidth);
        llayoutviewpage.setGravity(CENTER_IN_PARENT|CENTER_HORIZONTAL|CENTER_VERTICAL);

        //缩小
        PropertyValuesHolder pvhX = PropertyValuesHolder.ofFloat("scaleX", 0.9f, 0.8f);
        PropertyValuesHolder pvhY = PropertyValuesHolder.ofFloat("scaleY", 1f, 0.8f);
        ObjectAnimator scale = ObjectAnimator.ofPropertyValuesHolder(mViewPager, pvhX, pvhY);
        scale.setDuration(100);
        scale.start();

        RelativeLayout.LayoutParams Rlparam = new RelativeLayout.LayoutParams(dm2.widthPixels * 8 / 10, dm2.heightPixels * 8 / 10);
        Rlparam.addRule(CENTER_IN_PARENT);
        llayoutviewpage.setLayoutParams(Rlparam);
        mainSimpleOnGestureListener.setViewPagePosition(mViewPager.getWidth(), mViewPager.getHeight());
        pagebarlt.setVisibility(VISIBLE);

        EventBus.getDefault().post(new zoomEvent(true));
        EventBus.clearCaches();
    } else {
        Log.d("test","enlarge  "   thewidth   " ----  "   dm2.widthPixels);
        Log.d("test","enlarge  "   thewidth   " ----  "   dm2.heightPixels);
        mViewPager.setPageMargin(0);
        llayoutviewpage.setGravity(CENTER_IN_PARENT|CENTER_HORIZONTAL|CENTER_VERTICAL);
        //Zoom in
        PropertyValuesHolder pvhX = PropertyValuesHolder.ofFloat("scaleX", 1f, 1f);
        PropertyValuesHolder pvhY = PropertyValuesHolder.ofFloat("scaleY", 1f, 1f);
        ObjectAnimator scale = ObjectAnimator.ofPropertyValuesHolder(mViewPager, pvhX, pvhY);
        scale.setDuration(50);
        scale.start();
        currentIsFull = true;
        RelativeLayout.LayoutParams Rlparam2 = new RelativeLayout.LayoutParams(dm2.widthPixels, dm2.heightPixels);

        Rlparam2.addRule(CENTER_IN_PARENT|CENTER_HORIZONTAL|CENTER_VERTICAL);
        llayoutviewpage.setLayoutParams(Rlparam2);

        pagebarlt.setVisibility(INVISIBLE);
        EventBus.getDefault().post(new zoomEvent(true));
    }
}
 

Кроме того, я не могу открыть фрагмент при последующем нажатии на фрагмент zoomchange . Я могу сделать это только с помощью кнопки, которая находится в режиме основной активности. Как я могу прикоснуться к этому виду?

Почему это происходит? Я использую жест для пролистывания фрагментов.