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 package com.android.settings.deviceinfo; 17 18 import android.content.Context; 19 import android.content.pm.PackageManager; 20 import android.support.v7.preference.Preference; 21 import android.support.v7.preference.PreferenceScreen; 22 import android.text.TextUtils; 23 import android.util.Log; 24 25 import com.android.settings.core.PreferenceController; 26 import com.android.settingslib.DeviceInfoUtils; 27 28 public class SecurityPatchPreferenceController extends PreferenceController { 29 30 private static final String KEY_SECURITY_PATCH = "security_patch"; 31 private static final String TAG = "SecurityPatchPref"; 32 33 private final String mPatch; 34 private final PackageManager mPackageManager; 35 36 public SecurityPatchPreferenceController(Context context) { 37 super(context); 38 mPackageManager = mContext.getPackageManager(); 39 mPatch = DeviceInfoUtils.getSecurityPatch(); 40 } 41 42 @Override 43 public boolean isAvailable() { 44 return !TextUtils.isEmpty(mPatch); 45 } 46 47 @Override 48 public String getPreferenceKey() { 49 return KEY_SECURITY_PATCH; 50 } 51 52 @Override 53 public void displayPreference(PreferenceScreen screen) { 54 super.displayPreference(screen); 55 final Preference pref = screen.findPreference(KEY_SECURITY_PATCH); 56 if (pref != null) { 57 pref.setSummary(mPatch); 58 } 59 } 60 61 @Override 62 public boolean handlePreferenceTreeClick(Preference preference) { 63 if (!TextUtils.equals(preference.getKey(), KEY_SECURITY_PATCH)) { 64 return false; 65 } 66 if (mPackageManager.queryIntentActivities(preference.getIntent(), 0).isEmpty()) { 67 // Don't send out the intent to stop crash 68 Log.w(TAG, "Stop click action on " + KEY_SECURITY_PATCH + ": " 69 + "queryIntentActivities() returns empty"); 70 return true; 71 } 72 return false; 73 } 74 } 75
