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