AppInfoBase.java revision 7574b6491029f4830de2e1db0962d301b41083f4 
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 */
16
17package com.android.settings.applications;
18
19import android.app.Activity;
20import android.app.AlertDialog;
21import android.app.Dialog;
22import android.app.DialogFragment;
23import android.app.Fragment;
24import android.app.admin.DevicePolicyManager;
25import android.content.BroadcastReceiver;
26import android.content.Context;
27import android.content.Intent;
28import android.content.IntentFilter;
29import android.content.pm.PackageInfo;
30import android.content.pm.PackageManager;
31import android.content.pm.PackageManager.NameNotFoundException;
32import android.hardware.usb.IUsbManager;
33import android.os.Bundle;
34import android.os.IBinder;
35import android.os.ServiceManager;
36import android.os.UserHandle;
37import android.os.UserManager;
38import android.util.Log;
39
40import com.android.settings.SettingsActivity;
41import com.android.settings.SettingsPreferenceFragment;
42import com.android.settings.Utils;
43import com.android.settingslib.RestrictedLockUtils;
44import com.android.settingslib.applications.ApplicationsState;
45import com.android.settingslib.applications.ApplicationsState.AppEntry;
46
47import java.util.ArrayList;
48
49import static com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
50
51public abstract class AppInfoBase extends SettingsPreferenceFragment
52        implements ApplicationsState.Callbacks {
53
54    public static final String ARG_PACKAGE_NAME = "package";
55    public static final String ARG_PACKAGE_UID = "uid";
56
57    protected static final String TAG = AppInfoBase.class.getSimpleName();
58    protected static final boolean localLOGV = false;
59
60    protected EnforcedAdmin mAppsControlDisallowedAdmin;
61    protected boolean mAppsControlDisallowedBySystem;
62
63    protected ApplicationsState mState;
64    protected ApplicationsState.Session mSession;
65    protected ApplicationsState.AppEntry mAppEntry;
66    protected PackageInfo mPackageInfo;
67    protected int mUserId;
68    protected String mPackageName;
69
70    protected IUsbManager mUsbManager;
71    protected DevicePolicyManager mDpm;
72    protected UserManager mUserManager;
73    protected PackageManager mPm;
74
75    // Dialog identifiers used in showDialog
76    protected static final int DLG_BASE = 0;
77
78    protected boolean mFinishing;
79    protected boolean mListeningToPackageRemove;
80
81    @Override
82    public void onCreate(Bundle savedInstanceState) {
83        super.onCreate(savedInstanceState);
84        mFinishing = false;
85
86        mState = ApplicationsState.getInstance(getActivity().getApplication());
87        mSession = mState.newSession(this);
88        Context context = getActivity();
89        mDpm = (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
90        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
91        mPm = context.getPackageManager();
92        IBinder b = ServiceManager.getService(Context.USB_SERVICE);
93        mUsbManager = IUsbManager.Stub.asInterface(b);
94
95        retrieveAppEntry();
96        startListeningToPackageRemove();
97    }
98
99    @Override
100    public void onResume() {
101        super.onResume();
102        mSession.resume();
103        mAppsControlDisallowedAdmin = RestrictedLockUtils.checkIfRestrictionEnforced(getActivity(),
104                UserManager.DISALLOW_APPS_CONTROL, mUserId);
105        mAppsControlDisallowedBySystem = RestrictedLockUtils.hasBaseUserRestriction(getActivity(),
106                UserManager.DISALLOW_APPS_CONTROL, mUserId);
107
108        if (!refreshUi()) {
109            setIntentAndFinish(true, true);
110        }
111    }
112
113    @Override
114    public void onPause() {
115        mSession.pause();
116        super.onPause();
117    }
118
119    @Override
120    public void onDestroy() {
121        stopListeningToPackageRemove();
122        mSession.release();
123        super.onDestroy();
124    }
125
126    protected String retrieveAppEntry() {
127        final Bundle args = getArguments();
128        mPackageName = (args != null) ? args.getString(ARG_PACKAGE_NAME) : null;
129        if (mPackageName == null) {
130            Intent intent = (args == null) ?
131                    getActivity().getIntent() : (Intent) args.getParcelable("intent");
132            if (intent != null) {
133                mPackageName = intent.getData().getSchemeSpecificPart();
134            }
135        }
136        mUserId = UserHandle.myUserId();
137        mAppEntry = mState.getEntry(mPackageName, mUserId);
138        if (mAppEntry != null) {
139            // Get application info again to refresh changed properties of application
140            try {
141                mPackageInfo = mPm.getPackageInfo(mAppEntry.info.packageName,
142                        PackageManager.GET_DISABLED_COMPONENTS |
143                        PackageManager.GET_UNINSTALLED_PACKAGES |
144                        PackageManager.GET_SIGNATURES |
145                        PackageManager.GET_PERMISSIONS);
146            } catch (NameNotFoundException e) {
147                Log.e(TAG, "Exception when retrieving package:" + mAppEntry.info.packageName, e);
148            }
149        } else {
150            Log.w(TAG, "Missing AppEntry; maybe reinstalling?");
151            mPackageInfo = null;
152        }
153
154        return mPackageName;
155    }
156
157    protected void setIntentAndFinish(boolean finish, boolean appChanged) {
158        if (localLOGV) Log.i(TAG, "appChanged="+appChanged);
159        Intent intent = new Intent();
160        intent.putExtra(ManageApplications.APP_CHG, appChanged);
161        SettingsActivity sa = (SettingsActivity)getActivity();
162        sa.finishPreferencePanel(this, Activity.RESULT_OK, intent);
163        mFinishing = true;
164    }
165
166    protected void showDialogInner(int id, int moveErrorCode) {
167        DialogFragment newFragment = MyAlertDialogFragment.newInstance(id, moveErrorCode);
168        newFragment.setTargetFragment(this, 0);
169        newFragment.show(getFragmentManager(), "dialog " + id);
170    }
171
172    protected abstract boolean refreshUi();
173    protected abstract AlertDialog createDialog(int id, int errorCode);
174
175    @Override
176    public void onRunningStateChanged(boolean running) {
177        // No op.
178    }
179
180    @Override
181    public void onRebuildComplete(ArrayList<AppEntry> apps) {
182        // No op.
183    }
184
185    @Override
186    public void onPackageIconChanged() {
187        // No op.
188    }
189
190    @Override
191    public void onPackageSizeChanged(String packageName) {
192        // No op.
193    }
194
195    @Override
196    public void onAllSizesComputed() {
197        // No op.
198    }
199
200    @Override
201    public void onLauncherInfoChanged() {
202        // No op.
203    }
204
205    @Override
206    public void onLoadEntriesCompleted() {
207        // No op.
208    }
209
210    @Override
211    public void onPackageListChanged() {
212        refreshUi();
213    }
214
215    public static void startAppInfoFragment(Class<?> fragment, int titleRes,
216            String pkg, int uid, Fragment source, int request) {
217        startAppInfoFragment(fragment, titleRes, pkg, uid, source.getActivity(), request);
218    }
219
220    public static void startAppInfoFragment(Class<?> fragment, int titleRes,
221            String pkg, int uid, Activity source, int request) {
222        Bundle args = new Bundle();
223        args.putString(AppInfoBase.ARG_PACKAGE_NAME, pkg);
224        args.putInt(AppInfoBase.ARG_PACKAGE_UID, uid);
225
226        Intent intent = Utils.onBuildStartFragmentIntent(source, fragment.getName(),
227                args, null, titleRes, null, false);
228        source.startActivityForResultAsUser(intent, request,
229                new UserHandle(UserHandle.getUserId(uid)));
230    }
231
232    public static class MyAlertDialogFragment extends DialogFragment {
233
234        @Override
235        public Dialog onCreateDialog(Bundle savedInstanceState) {
236            int id = getArguments().getInt("id");
237            int errorCode = getArguments().getInt("moveError");
238            Dialog dialog = ((AppInfoBase) getTargetFragment()).createDialog(id, errorCode);
239            if (dialog == null) {
240                throw new IllegalArgumentException("unknown id " + id);
241            }
242            return dialog;
243        }
244
245        public static MyAlertDialogFragment newInstance(int id, int errorCode) {
246            MyAlertDialogFragment dialogFragment = new MyAlertDialogFragment();
247            Bundle args = new Bundle();
248            args.putInt("id", id);
249            args.putInt("moveError", errorCode);
250            dialogFragment.setArguments(args);
251            return dialogFragment;
252        }
253    }
254
255    protected void startListeningToPackageRemove() {
256        if (mListeningToPackageRemove) {
257            return;
258        }
259        mListeningToPackageRemove = true;
260        final IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_REMOVED);
261        filter.addDataScheme("package");
262        getContext().registerReceiver(mPackageRemovedReceiver, filter);
263    }
264
265    protected void stopListeningToPackageRemove() {
266        if (!mListeningToPackageRemove) {
267            return;
268        }
269        mListeningToPackageRemove = false;
270        getContext().unregisterReceiver(mPackageRemovedReceiver);
271    }
272
273    protected void onPackageRemoved() {
274        getActivity().finishAndRemoveTask();
275    }
276
277    protected final BroadcastReceiver mPackageRemovedReceiver = new BroadcastReceiver() {
278        @Override
279        public void onReceive(Context context, Intent intent) {
280            String packageName = intent.getData().getSchemeSpecificPart();
281            if (!mFinishing && mAppEntry.info.packageName.equals(packageName)) {
282                onPackageRemoved();
283            }
284        }
285    };
286
287}
288