Examples with ViewTreeObserver android.view.ViewTreeObserver used on opensource projects

Example 51 with ViewTreeObserver

use of android.view.ViewTreeObserver in project android-extendedactionbar by Takhion.

the class ExtendedActionBarActivity method onCreate.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_test);
    final Resources res = getResources();
    final boolean isKitkat = Build.VERSION.SDK_INT >= 19;
    // replace window background to reduce overdraw
    final Window window = getWindow();
    final ViewGroup contentView = (ViewGroup) findViewById(android.R.id.content);
    final View content = contentView.getChildAt(0);
    final Drawable extendedWindowBackground = window.getDecorView().getBackground();
    final Drawable windowBackground = !isKitkat ? extendedWindowBackground : getWindowBackgroundLayer(extendedWindowBackground, R.id.window_background, "window_background");
    window.setBackgroundDrawable(null);
    setBackground(content, windowBackground);
    // add statusbar background
    if (isKitkat) {
        // check if translucent bars are enabled
        final int config_enableTranslucentDecor_id = res.getIdentifier("config_enableTranslucentDecor", "bool", "android");
        if (config_enableTranslucentDecor_id > 0 && res.getBoolean(config_enableTranslucentDecor_id)) {
            // get ActionBar container
            final View actionBarContainer = findViewById("action_bar_container", "android");
            if (actionBarContainer != null) {
                // add layout listener (can't get margin before layout)
                //noinspection ConstantConditions
                actionBarContainer.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

                    @SuppressWarnings("ConstantConditions")
                    @Override
                    public void onGlobalLayout() {
                        // remove layout listener
                        final ViewTreeObserver vto = actionBarContainer.getViewTreeObserver();
                        if (Build.VERSION.SDK_INT < 16)
                            vto.removeGlobalOnLayoutListener(this);
                        else
                            vto.removeOnGlobalLayoutListener(this);
                        // create and add statusbar background view
                        final Drawable statusBarBackground = getWindowBackgroundLayer(extendedWindowBackground, R.id.statusbar_background, "statusbar_background");
                        final int statusBarHeight = ((ViewGroup.MarginLayoutParams) actionBarContainer.getLayoutParams()).topMargin;
                        final View statusBarView = new View(ExtendedActionBarActivity.this);
                        setBackground(statusBarView, statusBarBackground);
                        final FrameLayout.LayoutParams statusBarBackground_lp = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, statusBarHeight, Gravity.TOP | Gravity.FILL_HORIZONTAL);
                        contentView.addView(statusBarView, 0, statusBarBackground_lp);
                        // shift content under actionbar
                        final ViewGroup.MarginLayoutParams content_lp = (ViewGroup.MarginLayoutParams) content.getLayoutParams();
                        content_lp.topMargin = getActionBar().getHeight() + statusBarHeight;
                        content.setLayoutParams(content_lp);
                    }
                });
            }
        }
    }
}

Example 52 with ViewTreeObserver

use of android.view.ViewTreeObserver in project ElasticDownload by Tibolte.

the class ElasticDownloadView method onFinishInflate.

/**
     * MARK: Overrides
     */
@Override
protected void onFinishInflate() {
    super.onFinishInflate();
    mIntroView = (IntroView) findViewById(R.id.intro_view);
    mIntroView.setListener(this);
    mProgressDownloadView = (ProgressDownloadView) findViewById(R.id.progress_download_view);
    ViewTreeObserver vto = mProgressDownloadView.getViewTreeObserver();
    vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

        @Override
        public void onGlobalLayout() {
            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
                mProgressDownloadView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
            } else {
                mProgressDownloadView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
            }
            mIntroView.getLayoutParams().width = mProgressDownloadView.getWidth();
            mIntroView.getLayoutParams().height = mProgressDownloadView.getHeight();
            mProgressDownloadView.setBackgroundColor(mBackgroundColor);
        }
    });
}

Example 53 with ViewTreeObserver

use of android.view.ViewTreeObserver in project HoloEverywhere by Prototik.

the class ActivityChooserView method onDetachedFromWindow.

@Override
protected void onDetachedFromWindow() {
    super.onDetachedFromWindow();
    ActivityChooserModel dataModel = mAdapter.getDataModel();
    if (dataModel != null) {
        dataModel.unregisterObserver(mModelDataSetOberver);
    }
    ViewTreeObserver viewTreeObserver = getViewTreeObserver();
    if (viewTreeObserver.isAlive()) {
        viewTreeObserver.removeGlobalOnLayoutListener(mOnGlobalLayoutListener);
    }
    if (isShowingPopup()) {
        dismissPopup();
    }
    mIsAttachedToWindow = false;
}

Example 54 with ViewTreeObserver

use of android.view.ViewTreeObserver in project HoloEverywhere by Prototik.

the class PopupWindow method registerForScrollChanged.

private void registerForScrollChanged(View anchor, int xoff, int yoff) {
    unregisterForScrollChanged();
    mAnchor = new WeakReference<View>(anchor);
    ViewTreeObserver vto = anchor.getViewTreeObserver();
    if (vto != null) {
        vto.addOnScrollChangedListener(mOnScrollChangedListener);
    }
    mAnchorXoff = xoff;
    mAnchorYoff = yoff;
}

Example 55 with ViewTreeObserver

use of android.view.ViewTreeObserver in project android_frameworks_base by ParanoidAndroid.

the class LayoutTransition method runChangeTransition.

/**
     * This function sets up animations on all of the views that change during layout.
     * For every child in the parent, we create a change animation of the appropriate
     * type (appearing, disappearing, or changing) and ask it to populate its start values from its
     * target view. We add layout listeners to all child views and listen for changes. For
     * those views that change, we populate the end values for those animations and start them.
     * Animations are not run on unchanging views.
     *
     * @param parent The container which is undergoing a change.
     * @param newView The view being added to or removed from the parent. May be null if the
     * changeReason is CHANGING.
     * @param changeReason A value of APPEARING, DISAPPEARING, or CHANGING, indicating whether the
     * transition is occurring because an item is being added to or removed from the parent, or
     * if it is running in response to a layout operation (that is, if the value is CHANGING).
     */
private void runChangeTransition(final ViewGroup parent, View newView, final int changeReason) {
    Animator baseAnimator = null;
    Animator parentAnimator = null;
    final long duration;
    switch(changeReason) {
        case APPEARING:
            baseAnimator = mChangingAppearingAnim;
            duration = mChangingAppearingDuration;
            parentAnimator = defaultChangeIn;
            break;
        case DISAPPEARING:
            baseAnimator = mChangingDisappearingAnim;
            duration = mChangingDisappearingDuration;
            parentAnimator = defaultChangeOut;
            break;
        case CHANGING:
            baseAnimator = mChangingAnim;
            duration = mChangingDuration;
            parentAnimator = defaultChange;
            break;
        default:
            // Shouldn't reach here
            duration = 0;
            break;
    }
    // If the animation is null, there's nothing to do
    if (baseAnimator == null) {
        return;
    }
    // reset the inter-animation delay, in case we use it later
    staggerDelay = 0;
    // used for later cleanup
    final ViewTreeObserver observer = parent.getViewTreeObserver();
    if (!observer.isAlive()) {
        // If the observer's not in a good state, skip the transition
        return;
    }
    int numChildren = parent.getChildCount();
    for (int i = 0; i < numChildren; ++i) {
        final View child = parent.getChildAt(i);
        // only animate the views not being added or removed
        if (child != newView) {
            setupChangeAnimation(parent, changeReason, baseAnimator, duration, child);
        }
    }
    if (mAnimateParentHierarchy) {
        ViewGroup tempParent = parent;
        while (tempParent != null) {
            ViewParent parentParent = tempParent.getParent();
            if (parentParent instanceof ViewGroup) {
                setupChangeAnimation((ViewGroup) parentParent, changeReason, parentAnimator, duration, tempParent);
                tempParent = (ViewGroup) parentParent;
            } else {
                tempParent = null;
            }
        }
    }
    // This is the cleanup step. When we get this rendering event, we know that all of
    // the appropriate animations have been set up and run. Now we can clear out the
    // layout listeners.
    observer.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {

        public boolean onPreDraw() {
            parent.getViewTreeObserver().removeOnPreDrawListener(this);
            int count = layoutChangeListenerMap.size();
            if (count > 0) {
                Collection<View> views = layoutChangeListenerMap.keySet();
                for (View view : views) {
                    View.OnLayoutChangeListener listener = layoutChangeListenerMap.get(view);
                    view.removeOnLayoutChangeListener(listener);
                }
            }
            layoutChangeListenerMap.clear();
            return true;
        }
    });
}