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Haptic effect on swiping the notification item

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Haptic once the swiping on the notification item is going to snap in either directions. The snap-in scenario is about the notification item when there is a "snap back point" i.e. if swiping the item back till a certain point it just snaps back to initial state but once it goes past a certain location it snaps into the new location.

- screenshot, https://screenshot.googleplex.com/6A8Gxs7yRwqAVk2

Bug: 175364588
Test: manual
Change-Id: I7e2ed19bfb7f863502e10233e3e23ee5d434b3b4
This commit is contained in:
John Li
2020-12-11 16:13:24 +08:00
parent 5c522ea088
commit ba55296a44
1 changed files with 29 additions and 0 deletions
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29
src/com/android/settings/notification/history/NotificationHistoryRecyclerView.java
View File

@@ -1,9 +1,14 @@
package com.android.settings.notification.history;
import static android.view.HapticFeedbackConstants.CLOCK_TICK;
import android.annotation.Nullable;
import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.view.View;
import androidx.annotation.NonNull;
import androidx.recyclerview.widget.DividerItemDecoration;
import androidx.recyclerview.widget.ItemTouchHelper;
import androidx.recyclerview.widget.LinearLayoutManager;
@@ -15,6 +20,9 @@ public class NotificationHistoryRecyclerView extends RecyclerView {
private OnItemSwipeDeleteListener listener;
/** The amount of horizontal displacement caused by user's action, used to track the swiping. */
private float dXLast;
public NotificationHistoryRecyclerView(Context context) {
this(context, null);
}
@@ -57,6 +65,27 @@ public class NotificationHistoryRecyclerView extends RecyclerView {
listener.onItemSwipeDeleted(viewHolder.getAdapterPosition());
}
}
/** Performs haptic effect once the swiping goes past a certain location. */
@Override
public void onChildDraw(@NonNull Canvas c, @NonNull RecyclerView recyclerView,
@NonNull ViewHolder viewHolder, float dX, float dY, int actionState,
boolean isCurrentlyActive) {
super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
if (isCurrentlyActive) {
View view = viewHolder.itemView;
float swipeThreshold = getSwipeThreshold(viewHolder);
float snapOffset = swipeThreshold * view.getWidth();
boolean snapIntoNewLocation = dX < -snapOffset || dX > snapOffset;
boolean snapIntoNewLocationLast = dXLast < -snapOffset || dXLast > snapOffset;
if (snapIntoNewLocation != snapIntoNewLocationLast) {
view.performHapticFeedback(CLOCK_TICK);
}
dXLast = dX;
} else {
dXLast = 0;
}
}
}
public interface OnItemSwipeDeleteListener {