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

Example 91 with ViewTreeObserver

use of android.view.ViewTreeObserver in project JustAndroid by chinaltz.

the class WeChatCircleActivity method setViewTreeObserver.

private void setViewTreeObserver() {
    bodyLayout = (RelativeLayout) findViewById(R.id.bodyLayout);
    final ViewTreeObserver swipeRefreshLayoutVTO = bodyLayout.getViewTreeObserver();
    swipeRefreshLayoutVTO.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

        @Override
        public void onGlobalLayout() {
            Rect r = new Rect();
            bodyLayout.getWindowVisibleDisplayFrame(r);
            //状态栏高度
            int statusBarH = getStatusBarHeight();
            int screenH = bodyLayout.getRootView().getHeight();
            if (r.top != statusBarH) {
                //在这个demo中r.top代表的是状态栏高度，在沉浸式状态栏时r.top＝0，通过getStatusBarHeight获取状态栏高度
                r.top = statusBarH;
            }
            int keyboardH = screenH - (r.bottom - r.top);
            if (keyboardH == currentKeyboardH) {
                //有变化时才处理，否则会陷入死循环
                return;
            }
            currentKeyboardH = keyboardH;
            //应用屏幕的高度
            screenHeight = screenH;
            editTextBodyHeight = edittextbody.getHeight();
            if (keyboardH < 150) {
                //说明是隐藏键盘的情况
                return;
            }
            //偏移listview
            if (layoutManager != null && commentConfig != null) {
                layoutManager.scrollToPositionWithOffset(commentConfig.circlePosition + CircleAdapter.HEADVIEW_SIZE, getListviewOffset(commentConfig));
            }
        }
    });
}

Example 92 with ViewTreeObserver

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

the class ListViewAddRemove method onCreate.

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.list_view_add_remove);
    final LinearLayout container = (LinearLayout) findViewById(R.id.container);
    final ListView listview = (ListView) findViewById(R.id.listview);
    for (int i = 0; i < 200; ++i) {
        numList.add(Integer.toString(i));
    }
    final StableArrayAdapter adapter = new StableArrayAdapter(this, android.R.layout.simple_list_item_1, numList);
    listview.setAdapter(adapter);
    final ViewTreeObserver observer = container.getViewTreeObserver();
    observer.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {

        public void onGlobalLayout() {
            System.out.println("-------------------------------------");
            System.out.println("onLayoutListener: listview view tops: ");
            for (int i = 0; i < listview.getChildCount(); ++i) {
                TextView view = (TextView) listview.getChildAt(i);
                System.out.println("    " + view.getText() + ": " + view.getTop());
            }
        }
    });
    final Scene mySceneChanger = new Scene(listview);
    mySceneChanger.setEnterAction(new Runnable() {

        @Override
        public void run() {
            numList.remove(mItemToDelete);
            adapter.notifyDataSetChanged();
        }
    });
    final Transition myTransition = new AutoTransition();
    final TransitionSet noFadeIn = new TransitionSet().setOrdering(TransitionSet.ORDERING_SEQUENTIAL);
    Fade fadeIn = new Fade(Fade.IN);
    fadeIn.setDuration(50);
    noFadeIn.addTransition(new Fade(Fade.OUT)).addTransition(new ChangeBounds()).addTransition(fadeIn);
    myTransition.addListener(new Transition.TransitionListenerAdapter() {

        @Override
        public void onTransitionStart(Transition transition) {
            System.out.println("---------ListView Tops: Before--------");
            for (int i = 0; i < listview.getChildCount(); ++i) {
                TextView view = (TextView) listview.getChildAt(i);
                int position = listview.getPositionForView(view);
            }
        }

        @Override
        public void onTransitionEnd(Transition transition) {
            System.out.println("---------ListView Tops: After--------");
            for (int i = 0; i < listview.getChildCount(); ++i) {
                TextView view = (TextView) listview.getChildAt(i);
                int position = listview.getPositionForView(view);
                if (view.hasTransientState()) {
                //                        view.setHasTransientState(false);
                }
            }
            myTransition.removeListener(this);
        }
    });
    listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, final View view, int position, long id) {
            System.out.println("---------ListView Tops: OnClick--------");
            String item = (String) parent.getItemAtPosition(position);
            for (int i = 0; i < listview.getChildCount(); ++i) {
                TextView v = (TextView) listview.getChildAt(i);
                if (!item.equals(v.getText())) {
                //                        v.setHasTransientState(true);
                }
            }
            //                listview.setHasTransientState(true);
            mItemToDelete = item;
            //                numList.remove(item);
            TransitionManager.go(mySceneChanger, noFadeIn);
        //                view.postDelayed(new Runnable() {
        //                    @Override
        //                    public void run() {
        //                        for (int i = 0; i < listview.getChildCount(); ++i) {
        //                            TextView v = (TextView) listview.getChildAt(i);
        //                            v.setHasTransientState(false);
        //                        }
        //                    }
        //                }, 200);
        }
    });
}

Example 93 with ViewTreeObserver

use of android.view.ViewTreeObserver in project little-bear-dictionary by daimajia.

the class ActivityChooserView method onDetachedFromWindow.

@Override
protected void onDetachedFromWindow() {
    super.onDetachedFromWindow();
    ActivityChooserModel dataModel = mAdapter.getDataModel();
    if (dataModel != null) {
        try {
            dataModel.unregisterObserver(mModelDataSetOberver);
        } catch (IllegalStateException e) {
        //Oh, well... fixes issue #557
        }
    }
    ViewTreeObserver viewTreeObserver = getViewTreeObserver();
    if (viewTreeObserver.isAlive()) {
        viewTreeObserver.removeGlobalOnLayoutListener(mOnGlobalLayoutListener);
    }
    mIsAttachedToWindow = false;
}

Example 94 with ViewTreeObserver

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

the class Editor method onAttachedToWindow.

void onAttachedToWindow() {
    if (mShowErrorAfterAttach) {
        showError();
        mShowErrorAfterAttach = false;
    }
    final ViewTreeObserver observer = mTextView.getViewTreeObserver();
    // The get method will add the listener on controller creation.
    if (mInsertionPointCursorController != null) {
        observer.addOnTouchModeChangeListener(mInsertionPointCursorController);
    }
    if (mSelectionModifierCursorController != null) {
        mSelectionModifierCursorController.resetTouchOffsets();
        observer.addOnTouchModeChangeListener(mSelectionModifierCursorController);
    }
    updateSpellCheckSpans(0, mTextView.getText().length(), true);
    if (mTextView.hasSelection()) {
        refreshTextActionMode();
    }
    getPositionListener().addSubscriber(mCursorAnchorInfoNotifier, true);
    resumeBlink();
}

Example 95 with ViewTreeObserver

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

the class Spinner method onRestoreInstanceState.

@Override
public void onRestoreInstanceState(Parcelable state) {
    SavedState ss = (SavedState) state;
    super.onRestoreInstanceState(ss.getSuperState());
    if (ss.showDropdown) {
        ViewTreeObserver vto = getViewTreeObserver();
        if (vto != null) {
            final OnGlobalLayoutListener listener = new OnGlobalLayoutListener() {

                @Override
                public void onGlobalLayout() {
                    if (!mPopup.isShowing()) {
                        mPopup.show(getTextDirection(), getTextAlignment());
                    }
                    final ViewTreeObserver vto = getViewTreeObserver();
                    if (vto != null) {
                        vto.removeOnGlobalLayoutListener(this);
                    }
                }
            };
            vto.addOnGlobalLayoutListener(listener);
        }
    }
}