DefaultHomePreferenceController.java revision a278962dbc545f69ca3712159d438f2e50dab0a5 
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
17package com.android.settings.applications.defaultapps;
18
19import android.content.ComponentName;
20import android.content.Context;
21import android.content.Intent;
22import android.content.IntentFilter;
23import android.content.pm.ActivityInfo;
24import android.content.pm.PackageManager;
25import android.content.pm.ResolveInfo;
26import android.support.v7.preference.Preference;
27import android.text.TextUtils;
28
29import java.util.ArrayList;
30import java.util.List;
31
32public class DefaultHomePreferenceController extends DefaultAppPreferenceController {
33
34    static final IntentFilter HOME_FILTER;
35
36    private final String mPackageName;
37
38    static {
39        HOME_FILTER = new IntentFilter(Intent.ACTION_MAIN);
40        HOME_FILTER.addCategory(Intent.CATEGORY_HOME);
41        HOME_FILTER.addCategory(Intent.CATEGORY_DEFAULT);
42    }
43
44    public DefaultHomePreferenceController(Context context) {
45        super(context);
46        mPackageName = mContext.getPackageName();
47    }
48
49    @Override
50    public String getPreferenceKey() {
51        return "default_home";
52    }
53
54    @Override
55    public boolean isAvailable() {
56        return true;
57    }
58
59    @Override
60    public void updateState(Preference preference) {
61        super.updateState(preference);
62        final DefaultAppInfo defaultApp = getDefaultAppInfo();
63        final CharSequence defaultAppLabel = defaultApp != null ? defaultApp.loadLabel() : null;
64        if (TextUtils.isEmpty(defaultAppLabel)) {
65            final String onlyAppLabel = getOnlyAppLabel();
66            if (!TextUtils.isEmpty(onlyAppLabel)) {
67                preference.setSummary(onlyAppLabel);
68            }
69        }
70    }
71
72    @Override
73    protected DefaultAppInfo getDefaultAppInfo() {
74        final ArrayList<ResolveInfo> homeActivities = new ArrayList<>();
75        final ComponentName currentDefaultHome = mPackageManager.getHomeActivities(homeActivities);
76
77        return new DefaultAppInfo(mPackageManager, mUserId, currentDefaultHome);
78    }
79
80    private String getOnlyAppLabel() {
81        final List<ResolveInfo> homeActivities = new ArrayList<>();
82        final List<ActivityInfo> appLabels = new ArrayList<>();
83
84        mPackageManager.getHomeActivities(homeActivities);
85        for (ResolveInfo candidate : homeActivities) {
86            final ActivityInfo info = candidate.activityInfo;
87            if (info.packageName.equals(mPackageName)) {
88                continue;
89            }
90            appLabels.add(info);
91        }
92        return appLabels.size() == 1
93                ? appLabels.get(0).loadLabel(mPackageManager.getPackageManager()).toString()
94                : null;
95    }
96
97    public static boolean hasHomePreference(String pkg, Context context) {
98        ArrayList<ResolveInfo> homeActivities = new ArrayList<>();
99        PackageManager pm = context.getPackageManager();
100        pm.getHomeActivities(homeActivities);
101        for (int i = 0; i < homeActivities.size(); i++) {
102            if (homeActivities.get(i).activityInfo.packageName.equals(pkg)) {
103                return true;
104            }
105        }
106        return false;
107    }
108
109    public static boolean isHomeDefault(String pkg, Context context) {
110        ArrayList<ResolveInfo> homeActivities = new ArrayList<>();
111        PackageManager pm = context.getPackageManager();
112        ComponentName def = pm.getHomeActivities(homeActivities);
113
114        return def != null && def.getPackageName().equals(pkg);
115    }
116}
117