Example usage for android.view ViewGroup getChildCount

List of usage examples for android.view ViewGroup getChildCount

  1. HOME
  2. Java
  3. android
  4. android.view.*
  5. ViewGroup
  6. getChildCount

Introduction

In this page you can find the example usage for android.view ViewGroup getChildCount.

Prototype

public int getChildCount()

Source Link

Document

Returns the number of children in the group.

Usage

From source file:au.com.glassechidna.velocityviewpager.VelocityViewPager.java

/**
 * Tests scrollability within child views of v given a delta of dx.
 *
 * @param v View to test for horizontal scrollability
 * @param checkV Whether the view v passed should itself be checked for scrollability (true),
 *               or just its children (false).
 * @param dx Delta scrolled in pixels//from   w  ww .j  av a2 s. c o m
 * @param x X coordinate of the active touch point
 * @param y Y coordinate of the active touch point
 * @return true if child views of v can be scrolled by delta of dx.
 */
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
    if (v instanceof ViewGroup) {
        final ViewGroup group = (ViewGroup) v;
        final int scrollX = v.getScrollX();
        final int scrollY = v.getScrollY();
        final int count = group.getChildCount();
        // Count backwards - let topmost views consume scroll distance first.
        for (int i = count - 1; i >= 0; i--) {
            // TODO: Add versioned support here for transformed views.
            // This will not work for transformed views in Honeycomb+
            final View child = group.getChildAt(i);
            if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight()
                    && y + scrollY >= child.getTop() && y + scrollY < child.getBottom() && canScroll(child,
                            true, dx, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
                return true;
            }
        }
    }

    return checkV && ViewCompat.canScrollHorizontally(v, -dx);
}

From source file:com.tjych.swip.vertical.DirectionalViewPager.java

/**
 * Tests scrollability within child views of v given a delta of dx.
 *
 * @param v View to test for horizontal scrollability
 * @param checkV Whether the view v passed should itself be checked for scrollability (true),
 *               or just its children (false).
 * @param dx Delta scrolled in pixels/* ww w  .j  av  a2  s. c  o m*/
 * @param x X coordinate of the active touch point
 * @param y Y coordinate of the active touch point
 * @return true if child views of v can be scrolled by delta of dx.
 */
protected boolean canScroll(View v, boolean checkV, int dx, int dy, int x, int y) {
    if (v instanceof ViewGroup) {
        final ViewGroup group = (ViewGroup) v;
        final int scrollX = v.getScrollX();
        final int scrollY = v.getScrollY();
        final int count = group.getChildCount();
        // Count backwards - let topmost views consume scroll distance first.
        for (int i = count - 1; i >= 0; i--) {
            // TODO: Add versioned support here for transformed views.
            // This will not work for transformed views in Honeycomb+
            final View child = group.getChildAt(i);
            if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight()
                    && y + scrollY >= child.getTop() && y + scrollY < child.getBottom() && canScroll(child,
                            true, dx, dy, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
                return true;
            }
        }
    }

    return checkV && ViewCompat.canScrollHorizontally(v, -dx);
}

From source file:com.minoon.stackviewpagersample.StackViewPager.java

/**
 * Tests scrollability within child views of v given a delta of dx.
 *
 * @param v View to test for horizontal scrollability
 * @param checkV Whether the view v passed should itself be checked for scrollability (true),
 *               or just its children (false).
 * @param dx Delta scrolled in pixels/* ww w. ja  va 2  s.c  om*/
 * @param x X coordinate of the active touch point
 * @param y Y coordinate of the active touch point
 * @return true if child views of v can be scrolled by delta of dx.
 */
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
    if (v instanceof ViewGroup) {
        final ViewGroup group = (ViewGroup) v;
        // [Changed]
        //            final int scrollX = v.getScrollX();
        final int scrollX = (int) v.getTranslationX();
        final int scrollY = v.getScrollY();
        final int count = group.getChildCount();
        // Count backwards - let topmost views consume scroll distance first.
        for (int i = count - 1; i >= 0; i--) {
            // TODO: Add versioned support here for transformed views.
            // This will not work for transformed views in Honeycomb+
            final View child = group.getChildAt(i);
            if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight()
                    && y + scrollY >= child.getTop() && y + scrollY < child.getBottom() && canScroll(child,
                            true, dx, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
                return true;
            }
        }
    }

    return checkV && ViewCompat.canScrollHorizontally(v, -dx);
}

From source file:com.telerik.examples.primitives.ExampleViewPagerBase.java

/**
 * Tests scrollability within child views of v given a delta of dx.
 *
 * @param v      View to test for horizontal scrollability
 * @param checkV Whether the view v passed should itself be checked for scrollability (true),
 *               or just its children (false).
 * @param dx     Delta scrolled in pixels
 * @param x      X coordinate of the active touch point
 * @param y      Y coordinate of the active touch point
 * @return true if child views of v can be scrolled by delta of dx.
 *///from ww w  .  ja v a 2s  . c  o  m
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
    if (v instanceof ViewGroup) {
        final ViewGroup group = (ViewGroup) v;
        final int scroll = getScroll(v);
        final int invertedScroll = getInvertedScroll(v);
        final int count = group.getChildCount();
        // Count backwards - let topmost views consume scroll distance first.
        for (int i = count - 1; i >= 0; i--) {
            // TODO: Add versioned support here for transformed views.
            // This will not work for transformed views in Honeycomb+
            final View child = group.getChildAt(i);
            if (x + scroll >= getStart(child) && x + scroll < getEnd(child)
                    && y + invertedScroll >= getInvertedStart(child)
                    && y + invertedScroll < getInvertedEnd(child) && canScroll(child, true, dx,
                            x + scroll - getStart(child), y + invertedScroll - getInvertedStart(child))) {
                return true;
            }
        }
    }

    return checkV && getCanScroll(v, -dx);
}

From source file:cn.androidy.materialdesignsample.ryanharterviewpager.ViewPager.java

/**
 * Tests scrollability within child views of v given a delta of dx.
 *
 * @param v View to test for horizontal scrollability
 * @param checkV Whether the view v passed should itself be checked for scrollability (true),
 *               or just its children (false).
 * @param dx Delta scrolled in pixels/*from w  ww. j  av a2s.c o m*/
 * @param x X coordinate of the active touch point
 * @param y Y coordinate of the active touch point
 * @return true if child views of v can be scrolled by delta of dx.
 */
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
    if (v instanceof ViewGroup) {
        final ViewGroup group = (ViewGroup) v;
        final int scrollX = v.getScrollX();
        final int scrollY = v.getScrollY();
        final int count = group.getChildCount();
        // Count backwards - let topmost views consume scroll distance first.
        for (int i = count - 1; i >= 0; i--) {
            // TODO: Add versioned support here for transformed views.
            // This will not work for transformed views in Honeycomb+
            final View child = group.getChildAt(i);
            if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight()
                    && y + scrollY >= child.getTop() && y + scrollY < child.getBottom() && canScroll(child,
                            true, dx, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
                return true;
            }
        }
    }

    boolean canScroll = false;
    if (isOrientationHorizontal()) {
        canScroll = ViewCompat.canScrollHorizontally(v, -dx);
    } else {
        canScroll = ViewCompat.canScrollVertically(v, -dx);
    }
    return checkV && canScroll;
}

From source file:com.viewpagerindicator.MyDirectionalViewPager.java

/**
 * Tests scrollability within child views of v given a delta of dx.
 *
 * @param v View to test for horizontal scrollability
 * @param checkV Whether the view v passed should itself be checked for scrollability (true),
 *               or just its children (false).
 * @param dposition Delta scrolled in pixels
 * @param x X coordinate of the active touch point
 * @param y Y coordinate of the active touch point
 * @return true if child views of v can be scrolled by delta of dx.
 *//*w w  w  .  j ava2 s  .  co m*/
protected boolean canScroll(View v, boolean checkV, int dposition, int x, int y) {
    if (v instanceof ViewGroup) {
        final ViewGroup group = (ViewGroup) v;
        final int scrollX = v.getScrollX();
        final int scrollY = v.getScrollY();
        final int count = group.getChildCount();
        // Count backwards - let topmost views consume scroll distance first.
        for (int i = count - 1; i >= 0; i--) {
            // TODO: Add versioned support here for transformed views.
            // This will not work for transformed views in Honeycomb+
            final View child = group.getChildAt(i);
            if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight()
                    && y + scrollY >= child.getTop() && y + scrollY < child.getBottom() && canScroll(child,
                            true, dposition, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
                return true;
            }
        }
    }
    if (mOrientation == HORIZONTAL) {
        return checkV && ViewCompat.canScrollHorizontally(v, -dposition);
    } else {
        return checkV && ViewCompat.canScrollVertically(v, -dposition);
    }
}

From source file:com.guide.ViewPager.java

/**
 * Tests scrollability within child views of v given a delta of dx.
 * //from  w  w  w. j  ava2 s.  co  m
 * @param v
 *            View to test for horizontal scrollability
 * @param checkV
 *            Whether the view v passed should itself be checked for
 *            scrollability (true), or just its children (false).
 * @param dx
 *            Delta scrolled in pixels
 * @param x
 *            X coordinate of the active touch point
 * @param y
 *            Y coordinate of the active touch point
 * @return true if child views of v can be scrolled by delta of dx.
 */
protected boolean canScroll(View v, boolean checkV, int dx, int x, int y) {
    if (v instanceof ViewGroup) {
        final ViewGroup group = (ViewGroup) v;
        final int scrollX = v.getScrollX();
        final int scrollY = v.getScrollY();
        final int count = group.getChildCount();
        // Count backwards - let topmost views consume scroll distance
        // first.
        for (int i = count - 1; i >= 0; i--) {
            // TODO: Add versioned support here for transformed views.
            // This will not work for transformed views in Honeycomb+
            final View child = group.getChildAt(i);
            if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight()
                    && y + scrollY >= child.getTop() && y + scrollY < child.getBottom() && canScroll(child,
                            true, dx, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
                return true;
            }
        }
    }

    boolean canScroll = false;
    if (isOrientationHorizontal()) {
        canScroll = ViewCompat.canScrollHorizontally(v, -dx);
    } else {
        canScroll = ViewCompat.canScrollVertically(v, -dx);
    }
    return checkV && canScroll;
}

From source file:android.improving.utils.views.cardsview.OrientedViewPager.java

/**
 * Tests scrollability within child views of v given a delta of dx.
 *
 * @param v      View to test for horizontal scrollability
 * @param checkV Whether the view v passed should itself be checked for scrollability (true),
 *               or just its children (false).
 * @param delta  Delta scrolled in pixels
 * @param x      X coordinate of the active touch point
 * @param y      Y coordinate of the active touch point
 * @return true if child views of v can be scrolled by delta of dx.
 *///from w w  w  . j  av  a2s. c o  m
protected boolean canScroll(View v, boolean checkV, int delta, int x, int y) {
    if (v instanceof ViewGroup) {
        final ViewGroup group = (ViewGroup) v;
        final int scrollX = v.getScrollX();
        final int scrollY = v.getScrollY();
        final int count = group.getChildCount();
        // Count backwards - let topmost views consume scroll distance first.
        for (int i = count - 1; i >= 0; i--) {
            // TODO: Add versioned support here for transformed views.
            // This will not work for transformed views in Honeycomb+
            final View child = group.getChildAt(i);
            if (mOrientation == Orientation.VERTICAL) {
                if (y + scrollY >= child.getTop() && y + scrollY < child.getBottom()
                        && x + scrollX >= child.getLeft() && x + scrollX < child.getRight() && canScroll(child,
                                true, delta, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
                    return true;
                }
            } else {
                if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight()
                        && y + scrollY >= child.getTop() && y + scrollY < child.getBottom() && canScroll(child,
                                true, delta, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
                    return true;
                }
            }
        }
    }

    return checkV && ViewCompat.canScrollVertically(v, -delta);
}

From source file:dev.dworks.libs.widget.ViewPager.java

/**
 * Tests scrollability within child views of v given a delta of dx.
 *
 * @param v View to test for horizontal scrollability
 * @param checkV Whether the view v passed should itself be checked for scrollability (true),
 *               or just its children (false).
 * @param d Delta scrolled in pixels/*from ww w.j a va 2 s .  c  o m*/
 * @param x X coordinate of the active touch point
 * @param y Y coordinate of the active touch point
 * @return true if child views of v can be scrolled by delta of dx.
 */
protected boolean canScroll(View v, boolean checkV, int d, int x, int y) {
    if (v instanceof ViewGroup) {
        final ViewGroup group = (ViewGroup) v;
        final int scrollX = v.getScrollX();
        final int scrollY = v.getScrollY();
        final int count = group.getChildCount();
        // Count backwards - let topmost views consume scroll distance first.
        for (int i = count - 1; i >= 0; i--) {
            // TODO: Add versioned support here for transformed views.
            // This will not work for transformed views in Honeycomb+
            final View child = group.getChildAt(i);
            if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight()
                    && y + scrollY >= child.getTop() && y + scrollY < child.getBottom()
                    && canScroll(child, true, d, x + scrollX - child.getLeft(), y + scrollY - child.getTop())) {
                return true;
            }
        }
    }

    boolean canScroll;
    if (mOrientation == HORIZONTAL) {
        canScroll = checkV && ViewCompat.canScrollHorizontally(v, -d);
    } else {
        canScroll = checkV && ViewCompat.canScrollVertically(v, -d);
    }
    return canScroll;
}

From source file:com.cairoconfessions.MainActivity.java

public void addItem(View view) {
    // Instantiate a new "row" view.
    final ViewGroup mFilter = (ViewGroup) findViewById(R.id.filter_cat);
    final ViewGroup mFilterLoc = (ViewGroup) findViewById(R.id.filter_loc);
    final ViewGroup mFilterMain = (ViewGroup) findViewById(R.id.filter_main);
    final ViewGroup newView = (ViewGroup) LayoutInflater.from(this).inflate(R.layout.list_item_example, null);
    final ViewGroup newViewLoc = (ViewGroup) LayoutInflater.from(this).inflate(R.layout.list_item_example,
            null);//from  w ww .  ja va 2 s . co m
    final ViewGroup newViewMain = (ViewGroup) LayoutInflater.from(this).inflate(R.layout.list_item_example,
            null);
    ArrayList<View> presentView = new ArrayList<View>();

    mFilter.findViewsWithText(presentView, ((TextView) view).getText(), 1);
    if (presentView.size() == 0) {
        final String filterName = ((TextView) view).getText().toString();
        switch (((LinearLayout) view.getParent()).getId()) {
        case R.id.cat_filter_list:
            Categories.add(filterName);
            break;
        case R.id.locations:
            Cities.add(filterName);
            break;
        }
        if (filterName.equals("Love")) {
            newView.getChildAt(0).setBackgroundResource(R.color.love);
            newViewLoc.getChildAt(0).setBackgroundResource(R.color.love);
            newViewMain.getChildAt(0).setBackgroundResource(R.color.love);
        }
        if (filterName.equals("Pain")) {
            newView.getChildAt(0).setBackgroundResource(R.color.pain);
            newViewLoc.getChildAt(0).setBackgroundResource(R.color.pain);
            newViewMain.getChildAt(0).setBackgroundResource(R.color.pain);
        }
        if (filterName.equals("Guilt")) {
            newView.getChildAt(0).setBackgroundResource(R.color.guilt);
            newViewLoc.getChildAt(0).setBackgroundResource(R.color.guilt);
            newViewMain.getChildAt(0).setBackgroundResource(R.color.guilt);
        }
        if (filterName.equals("Fantasy")) {
            newView.getChildAt(0).setBackgroundResource(R.color.fantasy);
            newViewLoc.getChildAt(0).setBackgroundResource(R.color.fantasy);
            newViewMain.getChildAt(0).setBackgroundResource(R.color.fantasy);
        }
        if (filterName.equals("Dream")) {
            newView.getChildAt(0).setBackgroundResource(R.color.dream);
            newViewLoc.getChildAt(0).setBackgroundResource(R.color.dream);
            newViewMain.getChildAt(0).setBackgroundResource(R.color.dream);
        }
        ((TextView) newView.findViewById(android.R.id.text1)).setText(filterName);
        ((TextView) newViewLoc.findViewById(android.R.id.text1)).setText(filterName);
        ((TextView) newViewMain.findViewById(android.R.id.text1)).setText(filterName);
        // Set a click listener for the "X" button in the row that will
        // remove the row.

        newView.findViewById(R.id.delete_button).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mFilter.removeView(newView);
                mFilterLoc.removeView(newViewLoc);
                mFilterMain.removeView(newViewMain);
                if (mFilter.getChildCount() == 0) {
                    findViewById(R.id.content_loc).setVisibility(View.GONE);
                    findViewById(R.id.content_cat).setVisibility(View.GONE);
                    findViewById(R.id.content_main).setVisibility(View.GONE);
                }
                if (Categories.contains(filterName))
                    while (Categories.remove(filterName))
                        ;
                if (Cities.contains(filterName))
                    while (Cities.remove(filterName))
                        ;
                updateFilters();
            }
        });
        newViewLoc.findViewById(R.id.delete_button).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mFilterLoc.removeView(newViewLoc);
                mFilter.removeView(newView);
                mFilterMain.removeView(newViewMain);
                if (mFilterLoc.getChildCount() == 0) {
                    findViewById(R.id.content_loc).setVisibility(View.GONE);
                    findViewById(R.id.content_cat).setVisibility(View.GONE);
                    findViewById(R.id.content_main).setVisibility(View.GONE);
                }
                if (Categories.contains(filterName))
                    while (Categories.remove(filterName))
                        ;
                if (Cities.contains(filterName))
                    while (Cities.remove(filterName))
                        ;
                updateFilters();
            }

        });
        newViewMain.findViewById(R.id.delete_button).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                mFilterLoc.removeView(newViewLoc);
                mFilter.removeView(newView);
                mFilterMain.removeView(newViewMain);
                if (mFilterMain.getChildCount() == 0) {
                    findViewById(R.id.content_loc).setVisibility(View.GONE);
                    findViewById(R.id.content_cat).setVisibility(View.GONE);
                    findViewById(R.id.content_main).setVisibility(View.GONE);
                }
                if (Categories.contains(filterName))
                    while (Categories.remove(filterName))
                        ;
                if (Cities.contains(filterName))
                    while (Cities.remove(filterName))
                        ;
                updateFilters();
            }

        });

        // Because mFilter has android:animateLayoutChanges set to true,
        // adding this view is automatically animated.
        // mFilterCat.addView(newViewCat);
        mFilter.addView(newView, 0);
        mFilterLoc.addView(newViewLoc, 0);
        mFilterMain.addView(newViewMain, 0);
        findViewById(R.id.content_loc).setVisibility(View.VISIBLE);
        findViewById(R.id.content_cat).setVisibility(View.VISIBLE);
        findViewById(R.id.content_main).setVisibility(View.VISIBLE);
        updateFilters();
        Toast.makeText(this, filterName + " filter added!", Toast.LENGTH_LONG).show();
    } else
        Toast.makeText(this, "Already added!", Toast.LENGTH_LONG).show();
}