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.preference.PreferenceFragment; 20 import com.android.internal.logging.MetricsLogger; 21 22 /** 23 * Instrumented fragment that logs visibility state. 24 */ 25 public abstract class InstrumentedFragment extends PreferenceFragment { 26 // Declare new temporary categories here, starting after this value. 27 public static final int UNDECLARED = 100000; 28 29 /** 30 * Declare the view of this category. 31 * 32 * Categories are defined in {@link com.android.internal.logging.MetricsLogger} 33 * or if there is no relevant existing category you may define one in 34 * {@link com.android.settings.InstrumentedFragment}. 35 */ 36 protected abstract int getMetricsCategory(); 37 38 @Override 39 public void onResume() { 40 super.onResume(); 41 MetricsLogger.visible(getActivity(), getMetricsCategory()); 42 } 43 44 @Override 45 public void onPause() { 46 super.onPause(); 47 MetricsLogger.hidden(getActivity(), getMetricsCategory()); 48 } 49 } 50
