1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.settings; 18 19 import android.support.v14.preference.PreferenceFragment; 20 21 import com.android.internal.logging.MetricsLogger; 22 23 /** 24 * Instrumented preference fragment that logs visibility state. 25 */ 26 public abstract class InstrumentedPreferenceFragment extends PreferenceFragment { 27 /** 28 * Declare the view of this category. 29 * 30 * Categories are defined in {@link com.android.internal.logging.MetricsProto.MetricsEvent} 31 * or if there is no relevant existing category you may define one in 32 * {@link com.android.settings.InstrumentedFragment}. 33 */ 34 protected abstract int getMetricsCategory(); 35 36 @Override 37 public void onResume() { 38 super.onResume(); 39 MetricsLogger.visible(getActivity(), getMetricsCategory()); 40 } 41 42 @Override 43 public void onPause() { 44 super.onPause(); 45 MetricsLogger.hidden(getActivity(), getMetricsCategory()); 46 } 47 } 48
