java - 设置RelativeLayout Param高度时ImageView的尺寸会缩小

Question

我有一项 Activity ，其作用类似于底表。我已将其设置为用户可以用手指拖动它，它会相应地移动。一切正常，除非拖动底部表单时，最接近底部的图标会被调整大小，而不是直接从屏幕上掉下来。这会产生奇怪且不需要的效果。

这是正在发生的事情的图片:

调整大小的方法如下:

public void setAdjustableTouchListener() {
        full.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getActionMasked()) {
                    case MotionEvent.ACTION_DOWN:
                        mDragStartY = event.getY();
                        mDraggingStarted = SystemClock.elapsedRealtime();
                        mPointerOffset = event.getRawY() + main.getMeasuredHeight();
                        return true;
                    case MotionEvent.ACTION_UP:
                        if (mDragStartY < (event.getY() + TAP_DRIFT_TOLERANCE) && mDragStartY > (event.getY() - TAP_DRIFT_TOLERANCE)
                                && ((SystemClock.elapsedRealtime() - mDraggingStarted) < SINGLE_TAP_MAX_TIME)) {
                            result = "Dismissed";
                            finish();
                        } else {
                            if (main.getMeasuredHeight() > (viewConversion + heightDifference)) {
                                ResizeAnimation a = new ResizeAnimation(main);
                                a.setDuration(500);
                                a.setParams(main.getMeasuredHeight(), extendedViewHeight);
                                main.startAnimation(a);
                            } else if (main.getMeasuredHeight() < (viewConversion + heightDifference)
                                    && main.getMeasuredHeight() > viewConversion) {
                                ResizeAnimation a = new ResizeAnimation(main);
                                a.setDuration(500);
                                a.setParams(main.getMeasuredHeight(), viewConversion);
                                main.startAnimation(a);
                            } else if (main.getMeasuredHeight() < viewConversion && main.getMeasuredHeight() > (viewConversion / 2)) {
                                ResizeAnimation a = new ResizeAnimation(main);
                                a.setDuration(500);
                                a.setParams(main.getMeasuredHeight(), viewConversion);
                                main.startAnimation(a);
                            } else {
                                result = "Dismissed";
                                finish();
                            }
                        }
                        return true;
                    case MotionEvent.ACTION_MOVE:
                        if (mPointerOffset - event.getRawY() < extendedViewHeight)
                            setPrimaryContentHeight((int) (mPointerOffset - event.getRawY()));
                        return true;
                    default:
                        return true;
                }
            }
        });
    }

Answer 1

试试这个

  imageView.setScaleType(ImageView.ScaleType.FIT_XY);