1 /* 2 * Copyright (C) 2017 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.applications.appinfo; 18 19 import android.app.Activity; 20 import android.content.Context; 21 import android.content.pm.PackageInfo; 22 import android.os.AsyncTask; 23 import android.support.v7.preference.Preference; 24 import android.support.v7.preference.PreferenceScreen; 25 import android.text.format.Formatter; 26 27 import com.android.settings.R; 28 import com.android.settings.SettingsActivity; 29 import com.android.settings.applications.ProcStatsData; 30 import com.android.settings.applications.ProcStatsEntry; 31 import com.android.settings.applications.ProcStatsPackageEntry; 32 import com.android.settings.applications.ProcessStatsBase; 33 import com.android.settings.core.BasePreferenceController; 34 import com.android.settingslib.core.lifecycle.Lifecycle; 35 import com.android.settingslib.core.lifecycle.LifecycleObserver; 36 import com.android.settingslib.core.lifecycle.events.OnResume; 37 import com.android.settingslib.development.DevelopmentSettingsEnabler; 38 39 public class AppMemoryPreferenceController extends BasePreferenceController 40 implements LifecycleObserver, OnResume { 41 42 private static final String KEY_MEMORY = "memory"; 43 44 private Preference mPreference; 45 private final AppInfoDashboardFragment mParent; 46 private ProcStatsData mStatsManager; 47 private ProcStatsPackageEntry mStats; 48 49 private class MemoryUpdater extends AsyncTask<Void, Void, ProcStatsPackageEntry> { 50 51 @Override doInBackground(Void... params)52 protected ProcStatsPackageEntry doInBackground(Void... params) { 53 final Activity activity = mParent.getActivity(); 54 if (activity == null) { 55 return null; 56 } 57 PackageInfo packageInfo = mParent.getPackageInfo(); 58 if (packageInfo == null) { 59 return null; 60 } 61 if (mStatsManager == null) { 62 mStatsManager = new ProcStatsData(activity, false); 63 mStatsManager.setDuration(ProcessStatsBase.sDurations[0]); 64 } 65 mStatsManager.refreshStats(true); 66 for (ProcStatsPackageEntry pkgEntry : mStatsManager.getEntries()) { 67 for (ProcStatsEntry entry : pkgEntry.getEntries()) { 68 if (entry.getUid() == packageInfo.applicationInfo.uid) { 69 pkgEntry.updateMetrics(); 70 return pkgEntry; 71 } 72 } 73 } 74 return null; 75 } 76 77 @Override onPostExecute(ProcStatsPackageEntry entry)78 protected void onPostExecute(ProcStatsPackageEntry entry) { 79 if (mParent.getActivity() == null) { 80 return; 81 } 82 if (entry != null) { 83 mStats = entry; 84 mPreference.setEnabled(true); 85 double amount = Math.max(entry.getRunWeight(), entry.getBgWeight()) 86 * mStatsManager.getMemInfo().getWeightToRam(); 87 mPreference.setSummary(mContext.getString(R.string.memory_use_summary, 88 Formatter.formatShortFileSize(mContext, (long) amount))); 89 } else { 90 mPreference.setEnabled(false); 91 mPreference.setSummary(mContext.getString(R.string.no_memory_use_summary)); 92 } 93 } 94 } 95 AppMemoryPreferenceController(Context context, AppInfoDashboardFragment parent, Lifecycle lifecycle)96 public AppMemoryPreferenceController(Context context, AppInfoDashboardFragment parent, 97 Lifecycle lifecycle) { 98 super(context, KEY_MEMORY); 99 mParent = parent; 100 if (lifecycle != null) { 101 lifecycle.addObserver(this); 102 } 103 } 104 105 @Override getAvailabilityStatus()106 public int getAvailabilityStatus() { 107 if (!mContext.getResources().getBoolean(R.bool.config_show_app_info_settings_memory)) { 108 return UNSUPPORTED_ON_DEVICE; 109 } 110 111 return DevelopmentSettingsEnabler.isDevelopmentSettingsEnabled(mContext) 112 ? AVAILABLE : CONDITIONALLY_UNAVAILABLE; 113 } 114 115 @Override displayPreference(PreferenceScreen screen)116 public void displayPreference(PreferenceScreen screen) { 117 super.displayPreference(screen); 118 mPreference = screen.findPreference(getPreferenceKey()); 119 } 120 121 @Override handlePreferenceTreeClick(Preference preference)122 public boolean handlePreferenceTreeClick(Preference preference) { 123 if (KEY_MEMORY.equals(preference.getKey())) { 124 ProcessStatsBase.launchMemoryDetail((SettingsActivity) mParent.getActivity(), 125 mStatsManager.getMemInfo(), mStats, false); 126 return true; 127 } 128 return false; 129 } 130 131 @Override onResume()132 public void onResume() { 133 if (isAvailable()) { 134 new MemoryUpdater().execute(); 135 } 136 } 137 138 } 139