Merge "Prevent crash on 2 finger drag." into main

import android.annotation.NonNull;

import android.graphics.PointF;

import android.util.Log;

import android.view.MotionEvent;

import android.view.View;

 * All touch events must be passed through this class to track a drag event.

 */

public class DragDetector {

    private static final String TAG = "DragDetector";

    private final MotionEventHandler mEventHandler;

    private final PointF mInputDownPoint = new PointF();

                    return mResultOfDownAction;

                }

                final int dragPointerIndex = ev.findPointerIndex(mDragPointerId);

                // TODO(b/400635953): Separate the app header and its buttons'

                // touch listeners so they're not handled by the same DragDetector.

                if (dragPointerIndex == -1) {

                    throw new IllegalStateException("Failed to find primary pointer!");

                    Log.w(TAG, "Invalid pointer index on ACTION_MOVE. Drag"

                        + " pointer id: " + mDragPointerId);

                    return mResultOfDownAction;

                }

                if (!mIsDragEvent) {

                    float dx = ev.getRawX(dragPointerIndex) - mInputDownPoint.x;