| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file |
| * except in compliance with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software distributed under the |
| * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| */ |
| |
| package com.android.settings.deviceinfo.legal; |
| |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.content.pm.ResolveInfo; |
| |
| import androidx.preference.Preference; |
| import androidx.preference.PreferenceScreen; |
| |
| import com.android.settings.core.BasePreferenceController; |
| |
| import java.util.List; |
| |
| |
| public abstract class LegalPreferenceController extends BasePreferenceController { |
| private final PackageManager mPackageManager; |
| private Preference mPreference; |
| |
| public LegalPreferenceController(Context context, String key) { |
| super(context, key); |
| mPackageManager = mContext.getPackageManager(); |
| } |
| |
| @Override |
| public int getAvailabilityStatus() { |
| if (findMatchingSpecificActivity() != null) { |
| return AVAILABLE; |
| } else { |
| return UNSUPPORTED_ON_DEVICE; |
| } |
| } |
| |
| @Override |
| public void displayPreference(PreferenceScreen screen) { |
| mPreference = screen.findPreference(getPreferenceKey()); |
| super.displayPreference(screen); |
| |
| if (getAvailabilityStatus() == AVAILABLE) { |
| replacePreferenceIntent(); |
| } |
| } |
| |
| protected abstract Intent getIntent(); |
| |
| private ResolveInfo findMatchingSpecificActivity() { |
| final Intent intent = getIntent(); |
| if (intent == null) { |
| return null; |
| } |
| |
| // Find the activity that is in the system image |
| final List<ResolveInfo> list = mPackageManager.queryIntentActivities(intent, 0); |
| if (list == null) { |
| return null; |
| } |
| |
| for (ResolveInfo resolveInfo : list) { |
| if ((resolveInfo.activityInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) |
| != 0) { |
| return resolveInfo; |
| } |
| } |
| |
| // Did not find a matching activity |
| return null; |
| } |
| |
| private void replacePreferenceIntent() { |
| final ResolveInfo resolveInfo = findMatchingSpecificActivity(); |
| if (resolveInfo == null) { |
| return; |
| } |
| |
| // Replace the intent with this specific activity |
| mPreference.setIntent(new Intent().setClassName( |
| resolveInfo.activityInfo.packageName, |
| resolveInfo.activityInfo.name)); |
| |
| mPreference.setTitle(resolveInfo.loadLabel(mPackageManager)); |
| } |
| } |