androidx.core.view.NestedScrollingParentHelper Java Examples

private void init(Context context, AttributeSet attrs) {
    mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
    mDurationToStartPosition = getResources().getInteger(android.R.integer.config_longAnimTime);
    mDurationToCorrectPosition = getResources().getInteger(android.R.integer.config_longAnimTime);
    mSpinnerFinalOffset = mTotalDragDistance = dp2px(DEFAULT_MAX_DRAG_DISTANCE);
    
    mDecelerateInterpolator = new DecelerateInterpolator(2);
    
    setWillNotDraw(false);
    ViewCompat.setChildrenDrawingOrderEnabled(this, true);
    
    setRefreshView(new DefaultRefreshView(context));
    
    mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);
    mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
    setNestedScrollingEnabled(true);
}
 

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

    mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();

    mMediumAnimationDuration = getResources().getInteger(android.R.integer.config_mediumAnimTime);

    setWillNotDraw(false);
    mDecelerateInterpolator = new DecelerateInterpolator(DECELERATE_INTERPOLATION_FACTOR);

    final DisplayMetrics metrics = getResources().getDisplayMetrics();
    mCircleWidth = (int) (CIRCLE_DIAMETER * metrics.density);
    mCircleHeight = (int) (CIRCLE_DIAMETER * metrics.density);
    mDragTriggerDistances[DIRECTION_TOP] = DEFAULT_CIRCLE_TARGET * metrics.density;
    mDragTriggerDistances[DIRECTION_BOTTOM] = DEFAULT_CIRCLE_TARGET * metrics.density;

    createProgressView();
    setChildrenDrawingOrderEnabled(true);

    mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);
    mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
    mNestedScrollingChildHelper.setNestedScrollingEnabled(true);
    setNestedScrollingEnabled(true);

    final TypedArray a = context.obtainStyledAttributes(attrs, LAYOUT_ATTRS);
    setEnabled(a.getBoolean(0, true));
    a.recycle();
}
 

/**
 * Constructor that is called when inflating SwipeRefreshLayout from XML.
 *
 * @param context
 * @param attrs
 */
public CustomSwipeRefreshLayout(Context context, AttributeSet attrs) {
    super(context, attrs);
    mGestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
            //                                如果水平方向的偏移量大于竖直方向的偏移量，就消化该事件,
            return Math.abs(distanceX) > Math.abs(distanceY) || super.onScroll(e1, e2, distanceX, distanceY);

        }
    });
    mTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();

    mMediumAnimationDuration = getResources().getInteger(
            android.R.integer.config_mediumAnimTime);

    setWillNotDraw(false);
    mDecelerateInterpolator = new DecelerateInterpolator(DECELERATE_INTERPOLATION_FACTOR);

    final DisplayMetrics metrics = getResources().getDisplayMetrics();
    if (((IAdaptScreen) getContext()).cancelAdapt()) {
        mCircleDiameter = (int) (MaterialProgressDrawable.CIRCLE_DIAMETER_LARGE * metrics.density);
    } else {
        mCircleDiameter = (int) (MaterialProgressDrawable.CIRCLE_DIAMETER * metrics.density);
    }

    createProgressView();
    ViewCompat.setChildrenDrawingOrderEnabled(this, true);
    // the absolute offset has to take into account that the circle starts at an offset
    mSpinnerOffsetEnd = (int) (DEFAULT_CIRCLE_TARGET * metrics.density);
    mTotalDragDistance = mSpinnerOffsetEnd;
    mNestedScrollingParentHelper = new NestedScrollingParentHelper(this);

    mNestedScrollingChildHelper = new NestedScrollingChildHelper(this);
    setNestedScrollingEnabled(true);

    mOriginalOffsetTop = mCurrentTargetOffsetTop = -mCircleDiameter;
    moveToStart(1.0f);

    final TypedArray a = context.obtainStyledAttributes(attrs, LAYOUT_ATTRS);
    setEnabled(a.getBoolean(0, true));
    a.recycle();
}
 

public HomeView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);

    mHelper = new NestedScrollingParentHelper(this);
}
 

public NestedScrollView(Context context, AttributeSet attrs, int defStyleAttr) {
    super(context, attrs, defStyleAttr);
    initScrollView();

    final TypedArray a = context.obtainStyledAttributes(
            attrs, SCROLLVIEW_STYLEABLE, defStyleAttr, 0);

    setFillViewport(a.getBoolean(0, false));

    a.recycle();

    mParentHelper = new NestedScrollingParentHelper(this);
    mChildHelper = new NestedScrollingChildHelper(this);

    // ...because why else would you be using this widget?
    setNestedScrollingEnabled(true);

    ViewCompat.setAccessibilityDelegate(this, ACCESSIBILITY_DELEGATE);
}
 

public NestedScrollingParentView(Context context, AttributeSet attrs) {
    super(context, attrs);
    setOrientation(LinearLayout.VERTICAL);
    mScroller = new OverScroller(context);
    mNestedScrollingParentHelper=new NestedScrollingParentHelper(this);
}
 

public ContainerView(Context context) {
    super(context);
    nestedScrollingParentHelper = new NestedScrollingParentHelper(this);
    setWillNotDraw(false);
}
 

public ContainerView(Context context) {
    super(context);
    nestedScrollingParentHelper = new NestedScrollingParentHelper(this);
    setWillNotDraw(false);
}