Merge "Add toast instructing user to select second split app" into sc-v2-dev

    <string name="action_screenshot">Screenshot</string>

    <!-- Label for a button that enters split screen selection mode. [CHAR_LIMIT=20] -->

    <string name="action_split">Split</string>

    <!-- Label for toast with instructions for split screen selection mode. [CHAR_LIMIT=50] -->

    <string name="toast_split_select_app">Tap another app to use splitscreen</string>

    <!-- Message shown when an action is blocked by a policy enforced by the app or the organization managing the device. [CHAR_LIMIT=NONE] -->

    <string name="blocked_by_policy">This action isn\'t allowed by the app or your organization</string>

import android.view.animation.Interpolator;

import android.widget.ListView;

import android.widget.OverScroller;

import android.widget.Toast;

import androidx.annotation.Nullable;

import androidx.annotation.UiThread;

    private TaskView mSplitHiddenTaskView;

    private TaskView mSecondSplitHiddenTaskView;

    private SplitConfigurationOptions.StagedSplitBounds mSplitBoundsConfig;

    private final Toast mSplitToast = Toast.makeText(getContext(),

            R.string.toast_split_select_app, Toast.LENGTH_SHORT);

    /**

     * Keeps track of the index of the TaskView that split screen was initialized with so we know

        mFirstFloatingTaskView.setAlpha(1);

        mFirstFloatingTaskView.addAnimation(anim, startingTaskRect,

                mTempRect, mSplitHiddenTaskView, true /*fadeWithThumbnail*/);

        anim.addEndListener(success -> {

            if (success) {

                mSplitToast.show();

            }

        });

    }

    /**

    }

    public void confirmSplitSelect(TaskView taskView) {

        mSplitToast.cancel();

        RectF secondTaskStartingBounds = new RectF();

        Rect secondTaskEndingBounds = new Rect();

        // TODO(194414938) starting bounds seem slightly off, investigate

        splitController.resetState();

        int duration = mActivity.getStateManager().getState().getTransitionDuration(getContext());

        PendingAnimation pendingAnim = new PendingAnimation(duration);

        mSplitToast.cancel();

        if (!animate) {

            resetFromSplitSelectionState();

            return pendingAnim;