List of usage examples for android.view ViewGroup getViewTreeObserver
public ViewTreeObserver getViewTreeObserver()
From source file:android.support.v17.leanback.app.OnboardingSupportFragment.java
@Nullable @Override/*from w w w .j a v a 2 s.co m*/ public View onCreateView(LayoutInflater inflater, final ViewGroup container, Bundle savedInstanceState) { resolveTheme(); LayoutInflater localInflater = getThemeInflater(inflater); final ViewGroup view = (ViewGroup) localInflater.inflate(R.layout.lb_onboarding_fragment, container, false); mIsLtr = getResources().getConfiguration().getLayoutDirection() == View.LAYOUT_DIRECTION_LTR; mPageIndicator = (PagingIndicator) view.findViewById(R.id.page_indicator); mPageIndicator.setOnClickListener(mOnClickListener); mPageIndicator.setOnKeyListener(mOnKeyListener); mStartButton = view.findViewById(R.id.button_start); mStartButton.setOnClickListener(mOnClickListener); mStartButton.setOnKeyListener(mOnKeyListener); mLogoView = (ImageView) view.findViewById(R.id.logo); mTitleView = (TextView) view.findViewById(R.id.title); mDescriptionView = (TextView) view.findViewById(R.id.description); if (sSlideDistance == 0) { sSlideDistance = (int) (SLIDE_DISTANCE * getActivity().getResources().getDisplayMetrics().scaledDensity); } if (savedInstanceState == null) { mCurrentPageIndex = 0; mEnterTransitionFinished = false; mPageIndicator.onPageSelected(0, false); view.getViewTreeObserver().addOnPreDrawListener(new OnPreDrawListener() { @Override public boolean onPreDraw() { view.getViewTreeObserver().removeOnPreDrawListener(this); if (!startLogoAnimation()) { startEnterAnimation(); } return true; } }); } else { mEnterTransitionFinished = true; mCurrentPageIndex = savedInstanceState.getInt(KEY_CURRENT_PAGE_INDEX); initializeViews(view); } view.requestFocus(); return view; }
From source file:com.android.tv.settings.dialog.old.BaseDialogFragment.java
public void performEntryTransition(final Activity activity, final ViewGroup contentView, int iconResourceId, Uri iconResourceUri, final ImageView icon, final TextView title, final TextView description, final TextView breadcrumb) { // Pull out the root layout of the dialog and set the background drawable, to be // faded in during the transition. final ViewGroup twoPane = (ViewGroup) contentView.getChildAt(0); twoPane.setVisibility(View.INVISIBLE); // If the appropriate data is embedded in the intent and there is an icon specified // in the content fragment, we animate the icon from its initial position to the final // position. Otherwise, we perform a simpler transition in which the ActionFragment // slides in and the ContentFragment text fields slide in. mIntroAnimationInProgress = true;//from ww w. j a va2s. c o m List<TransitionImage> images = TransitionImage.readMultipleFromIntent(activity, activity.getIntent()); TransitionImageAnimation ltransitionAnimation = null; final Uri iconUri; final int color; if (images != null && images.size() > 0) { if (iconResourceId != 0) { iconUri = Uri.parse(UriUtils.getAndroidResourceUri(activity, iconResourceId)); } else if (iconResourceUri != null) { iconUri = iconResourceUri; } else { iconUri = null; } TransitionImage src = images.get(0); color = src.getBackground(); if (iconUri != null) { ltransitionAnimation = new TransitionImageAnimation(contentView); ltransitionAnimation.addTransitionSource(src); ltransitionAnimation.transitionDurationMs(ANIMATE_IN_DURATION).transitionStartDelayMs(0) .interpolator(new DecelerateInterpolator(1f)); } } else { iconUri = null; color = 0; } final TransitionImageAnimation transitionAnimation = ltransitionAnimation; // Fade out the old activity, and hard cut the new activity. activity.overridePendingTransition(R.anim.hard_cut_in, R.anim.fade_out); int bgColor = mFragment.getResources().getColor(R.color.dialog_activity_background); mBgDrawable.setColor(bgColor); mBgDrawable.setAlpha(0); twoPane.setBackground(mBgDrawable); // If we're animating the icon, we create a new ImageView in which to place the embedded // bitmap. We place it in the root layout to match its location in the previous activity. mShadowLayer = (FrameLayoutWithShadows) twoPane.findViewById(R.id.shadow_layout); if (transitionAnimation != null) { transitionAnimation.listener(new TransitionImageAnimation.Listener() { @Override public void onRemovedView(TransitionImage src, TransitionImage dst) { if (icon != null) { //want to make sure that users still see at least the source image // if the dst image is too large to finish downloading before the // animation is done. Check if the icon is not visible. This mean // BaseContentFragement have not finish downloading the image yet. if (icon.getVisibility() != View.VISIBLE) { icon.setImageDrawable(src.getBitmap()); int intrinsicWidth = icon.getDrawable().getIntrinsicWidth(); LayoutParams lp = icon.getLayoutParams(); lp.height = lp.width * icon.getDrawable().getIntrinsicHeight() / intrinsicWidth; icon.setVisibility(View.VISIBLE); } icon.setAlpha(1f); } if (mShadowLayer != null) { mShadowLayer.setShadowsAlpha(1f); } onIntroAnimationFinished(); } }); icon.setAlpha(0f); if (mShadowLayer != null) { mShadowLayer.setShadowsAlpha(0f); } } // We need to defer the remainder of the animation preparation until the first // layout has occurred, as we don't yet know the final location of the icon. twoPane.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() { @Override public void onGlobalLayout() { twoPane.getViewTreeObserver().removeOnGlobalLayoutListener(this); // if we buildLayer() at this time, the texture is actually not created // delay a little so we can make sure all hardware layer is created before // animation, in that way we can avoid the jittering of start animation twoPane.postOnAnimationDelayed(mEntryAnimationRunnable, ANIMATE_DELAY); } final Runnable mEntryAnimationRunnable = new Runnable() { @Override public void run() { if (!mFragment.isAdded()) { // We have been detached before this could run, so just bail return; } twoPane.setVisibility(View.VISIBLE); final int secondaryDelay = SLIDE_IN_DISTANCE; // Fade in the activity background protection ObjectAnimator oa = ObjectAnimator.ofInt(mBgDrawable, "alpha", 255); oa.setDuration(ANIMATE_IN_DURATION); oa.setStartDelay(secondaryDelay); oa.setInterpolator(new DecelerateInterpolator(1.0f)); oa.start(); View actionFragmentView = activity.findViewById(mActionAreaId); boolean isRtl = ViewCompat.getLayoutDirection(contentView) == ViewCompat.LAYOUT_DIRECTION_RTL; int startDist = isRtl ? SLIDE_IN_DISTANCE : -SLIDE_IN_DISTANCE; int endDist = isRtl ? -actionFragmentView.getMeasuredWidth() : actionFragmentView.getMeasuredWidth(); // Fade in and slide in the ContentFragment TextViews from the start. prepareAndAnimateView(title, 0, startDist, secondaryDelay, ANIMATE_IN_DURATION, new DecelerateInterpolator(1.0f), false); prepareAndAnimateView(breadcrumb, 0, startDist, secondaryDelay, ANIMATE_IN_DURATION, new DecelerateInterpolator(1.0f), false); prepareAndAnimateView(description, 0, startDist, secondaryDelay, ANIMATE_IN_DURATION, new DecelerateInterpolator(1.0f), false); // Fade in and slide in the ActionFragment from the end. prepareAndAnimateView(actionFragmentView, 0, endDist, secondaryDelay, ANIMATE_IN_DURATION, new DecelerateInterpolator(1.0f), false); if (icon != null && transitionAnimation != null) { // now we get the icon view in place, update the transition target TransitionImage target = new TransitionImage(); target.setUri(iconUri); target.createFromImageView(icon); if (icon.getBackground() instanceof ColorDrawable) { ColorDrawable d = (ColorDrawable) icon.getBackground(); target.setBackground(d.getColor()); } transitionAnimation.addTransitionTarget(target); transitionAnimation.startTransition(); } else if (icon != null) { prepareAndAnimateView(icon, 0, startDist, secondaryDelay, ANIMATE_IN_DURATION, new DecelerateInterpolator(1.0f), true /* is the icon */); if (mShadowLayer != null) { mShadowLayer.setShadowsAlpha(0f); } } } }; }); }