AppInfoBase.java revision cd91128a2de5d111c59fe442c72b764d9a9acb3a 
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 */
16package com.android.settings.applications;
17
18import android.app.Activity;
19import android.app.AlertDialog;
20import android.app.Dialog;
21import android.app.DialogFragment;
22import android.app.admin.DevicePolicyManager;
23import android.content.Context;
24import android.content.Intent;
25import android.content.pm.PackageInfo;
26import android.content.pm.PackageManager;
27import android.content.pm.PackageManager.NameNotFoundException;
28import android.hardware.usb.IUsbManager;
29import android.os.Bundle;
30import android.os.IBinder;
31import android.os.ServiceManager;
32import android.os.UserManager;
33import android.preference.PreferenceFragment;
34import android.util.Log;
35
36import com.android.settings.SettingsActivity;
37import com.android.settings.applications.ApplicationsState.AppEntry;
38
39import java.util.ArrayList;
40
41public abstract class AppInfoBase extends PreferenceFragment
42        implements ApplicationsState.Callbacks {
43
44    public static final String ARG_PACKAGE_NAME = "package";
45
46    protected static final String TAG = AppInfoBase.class.getSimpleName();
47    protected static final boolean localLOGV = false;
48
49    protected boolean mAppControlRestricted = false;
50
51    protected ApplicationsState mState;
52    private ApplicationsState.Session mSession;
53    protected ApplicationsState.AppEntry mAppEntry;
54    protected PackageInfo mPackageInfo;
55    protected String mPackageName;
56
57    protected IUsbManager mUsbManager;
58    protected DevicePolicyManager mDpm;
59    protected UserManager mUserManager;
60    protected PackageManager mPm;
61
62    // Dialog identifiers used in showDialog
63    protected static final int DLG_BASE = 0;
64
65    @Override
66    public void onCreate(Bundle savedInstanceState) {
67        super.onCreate(savedInstanceState);
68
69        mState = ApplicationsState.getInstance(getActivity().getApplication());
70        mSession = mState.newSession(this);
71        Context context = getActivity();
72        mDpm = (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
73        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
74        mPm = context.getPackageManager();
75        IBinder b = ServiceManager.getService(Context.USB_SERVICE);
76        mUsbManager = IUsbManager.Stub.asInterface(b);
77
78        // Need to make sure we have loaded applications at this point.
79        mSession.resume();
80
81        retrieveAppEntry();
82    }
83
84    @Override
85    public void onResume() {
86        super.onResume();
87        mAppControlRestricted = mUserManager.hasUserRestriction(UserManager.DISALLOW_APPS_CONTROL);
88        mSession.resume();
89
90        if (!refreshUi()) {
91            setIntentAndFinish(true, true);
92        }
93    }
94
95    @Override
96    public void onPause() {
97        super.onPause();
98        mSession.pause();
99    }
100
101    @Override
102    public void onDestroyView() {
103        super.onDestroyView();
104        mSession.release();
105    }
106
107    protected String retrieveAppEntry() {
108        final Bundle args = getArguments();
109        mPackageName = (args != null) ? args.getString(ARG_PACKAGE_NAME) : null;
110        if (mPackageName == null) {
111            Intent intent = (args == null) ?
112                    getActivity().getIntent() : (Intent) args.getParcelable("intent");
113            if (intent != null) {
114                mPackageName = intent.getData().getSchemeSpecificPart();
115            }
116        }
117        mAppEntry = mState.getEntry(mPackageName);
118        if (mAppEntry != null) {
119            // Get application info again to refresh changed properties of application
120            try {
121                mPackageInfo = mPm.getPackageInfo(mAppEntry.info.packageName,
122                        PackageManager.GET_DISABLED_COMPONENTS |
123                        PackageManager.GET_UNINSTALLED_PACKAGES |
124                        PackageManager.GET_SIGNATURES);
125            } catch (NameNotFoundException e) {
126                Log.e(TAG, "Exception when retrieving package:" + mAppEntry.info.packageName, e);
127            }
128        } else {
129            Log.w(TAG, "Missing AppEntry; maybe reinstalling?");
130            mPackageInfo = null;
131        }
132
133        return mPackageName;
134    }
135
136    protected void setIntentAndFinish(boolean finish, boolean appChanged) {
137        if (localLOGV) Log.i(TAG, "appChanged="+appChanged);
138        Intent intent = new Intent();
139        intent.putExtra(ManageApplications.APP_CHG, appChanged);
140        SettingsActivity sa = (SettingsActivity)getActivity();
141        sa.finishPreferencePanel(this, Activity.RESULT_OK, intent);
142    }
143
144    protected void showDialogInner(int id, int moveErrorCode) {
145        DialogFragment newFragment = new MyAlertDialogFragment(id, moveErrorCode);
146        newFragment.setTargetFragment(this, 0);
147        newFragment.show(getFragmentManager(), "dialog " + id);
148    }
149
150    protected abstract boolean refreshUi();
151    protected abstract AlertDialog createDialog(int id, int errorCode);
152
153    @Override
154    public void onRunningStateChanged(boolean running) { }
155    @Override
156    public void onRebuildComplete(ArrayList<AppEntry> apps) { }
157    @Override
158    public void onPackageIconChanged() { }
159    @Override
160    public void onPackageSizeChanged(String packageName) { }
161    @Override
162    public void onAllSizesComputed() { }
163
164    @Override
165    public void onPackageListChanged() {
166        refreshUi();
167    }
168
169    public class MyAlertDialogFragment extends DialogFragment {
170        public MyAlertDialogFragment(int id, int errorCode) {
171            Bundle args = new Bundle();
172            args.putInt("id", id);
173            args.putInt("moveError", errorCode);
174            setArguments(args);
175        }
176
177        @Override
178        public Dialog onCreateDialog(Bundle savedInstanceState) {
179            int id = getArguments().getInt("id");
180            int errorCode = getArguments().getInt("moveError");
181            Dialog dialog = createDialog(id, errorCode);
182            if (dialog == null) {
183                throw new IllegalArgumentException("unknown id " + id);
184            }
185            return dialog;
186        }
187    }
188}
189