Example usage for android.view ViewTreeObserver isAlive

Introduction

In this page you can find the example usage for android.view ViewTreeObserver isAlive.

Prototype

public boolean isAlive()

Source Link

Document

Indicates whether this ViewTreeObserver is alive.

Usage

From source file:com.androzic.vnspeech.MapFragment.java

private void updateMapViewArea() {
    final ViewTreeObserver vto = map.getViewTreeObserver();
    vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
        @SuppressLint("NewApi")
        @SuppressWarnings("deprecation")
        public void onGlobalLayout() {
            View root = getView();
            Rect area = new Rect();
            map.getLocalVisibleRect(area);
            View v = root.findViewById(R.id.topbar);
            if (v != null)
                area.top = v.getBottom();
            v = root.findViewById(R.id.bottombar);
            if (v != null)
                area.bottom = v.getTop();
            if (mapLicense.isShown()) {
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB && mapLicense.getRotation() != 0f)
                    area.left = mapLicense.getHeight(); // rotated view does not correctly report it's position
                else
                    area.bottom = mapLicense.getTop();
            }//  ww w.j a v  a 2  s  .com
            v = root.findViewById(R.id.rightbar);
            if (v != null)
                area.right = v.getLeft();
            if (mapButtons.isShown()) {
                // Landscape mode
                if (v != null)
                    area.bottom = mapButtons.getTop();
                else
                    area.right = mapButtons.getLeft();
            }
            if (!area.isEmpty())
                map.updateViewArea(area);
            ViewTreeObserver ob;
            if (vto.isAlive())
                ob = vto;
            else
                ob = map.getViewTreeObserver();

            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
                ob.removeGlobalOnLayoutListener(this);
            } else {
                ob.removeOnGlobalLayoutListener(this);
            }
        }
    });
}

From source file:org.mozilla.gecko.BrowserApp.java

private void showTabs(final TabsPanel.Panel panel) {
    if (Tabs.getInstance().getDisplayCount() == 0)
        return;/*  w  w w. j  a v a 2  s  . com*/

    if (ensureTabsPanelExists()) {
        // If we've just inflated the tabs panel, only show it once the current
        // layout pass is done to avoid displayed temporary UI states during
        // relayout.
        ViewTreeObserver vto = mTabsPanel.getViewTreeObserver();
        if (vto.isAlive()) {
            vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
                @Override
                public void onGlobalLayout() {
                    mTabsPanel.getViewTreeObserver().removeGlobalOnLayoutListener(this);
                    showTabs(panel);
                }
            });
        }
    } else {
        if (mDoorHangerPopup != null) {
            mDoorHangerPopup.disable();
        }
        mTabsPanel.show(panel);

        // Hide potentially visible "find in page" bar (Bug 1177338)
        mFindInPageBar.hide();
    }
}