diff options
Diffstat (limited to 'java/com/android/dialer/metrics/jank/RecyclerViewJankLogger.java')
-rw-r--r-- | java/com/android/dialer/metrics/jank/RecyclerViewJankLogger.java | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/java/com/android/dialer/metrics/jank/RecyclerViewJankLogger.java b/java/com/android/dialer/metrics/jank/RecyclerViewJankLogger.java new file mode 100644 index 000000000..c9f389285 --- /dev/null +++ b/java/com/android/dialer/metrics/jank/RecyclerViewJankLogger.java @@ -0,0 +1,46 @@ +/* + * Copyright (C) 2018 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License + */ + +package com.android.dialer.metrics.jank; + +import android.support.v7.widget.RecyclerView; +import android.support.v7.widget.RecyclerView.OnScrollListener; +import com.android.dialer.metrics.Metrics; + +/** Logs jank for {@link RecyclerView} scrolling events. */ +public final class RecyclerViewJankLogger extends OnScrollListener { + + private final Metrics metrics; + private final String eventName; + + private boolean isScrolling; + + public RecyclerViewJankLogger(Metrics metrics, String eventName) { + this.metrics = metrics; + this.eventName = eventName; + } + + @Override + public void onScrollStateChanged(RecyclerView recyclerView, int newState) { + if (!isScrolling && newState == RecyclerView.SCROLL_STATE_DRAGGING) { + isScrolling = true; + metrics.startJankRecorder(eventName); + } else if (isScrolling && newState == RecyclerView.SCROLL_STATE_IDLE) { + isScrolling = false; + metrics.stopJankRecorder(eventName); + } + } +} |