AppInfoBase.java revision 8a963babe2e36b7a41f77b8d2598c97658196e58 
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.admin.DevicePolicyManager;
24import android.content.Context;
25import android.content.Intent;
26import android.content.pm.PackageInfo;
27import android.content.pm.PackageManager;
28import android.content.pm.PackageManager.NameNotFoundException;
29import android.hardware.usb.IUsbManager;
30import android.os.Bundle;
31import android.os.IBinder;
32import android.os.ServiceManager;
33import android.os.UserHandle;
34import android.os.UserManager;
35import android.preference.PreferenceFragment;
36import android.util.Log;
37
38import com.android.settings.InstrumentedPreferenceFragment;
39import com.android.settings.SettingsActivity;
40import com.android.settings.applications.ApplicationsState.AppEntry;
41
42import java.util.ArrayList;
43
44public abstract class AppInfoBase extends InstrumentedPreferenceFragment
45        implements ApplicationsState.Callbacks {
46
47    public static final String ARG_PACKAGE_NAME = "package";
48
49    protected static final String TAG = AppInfoBase.class.getSimpleName();
50    protected static final boolean localLOGV = false;
51
52    protected boolean mAppControlRestricted = false;
53
54    protected ApplicationsState mState;
55    private ApplicationsState.Session mSession;
56    protected ApplicationsState.AppEntry mAppEntry;
57    protected PackageInfo mPackageInfo;
58    protected int mUserId;
59    protected String mPackageName;
60
61    protected IUsbManager mUsbManager;
62    protected DevicePolicyManager mDpm;
63    protected UserManager mUserManager;
64    protected PackageManager mPm;
65
66    // Dialog identifiers used in showDialog
67    protected static final int DLG_BASE = 0;
68
69    @Override
70    public void onCreate(Bundle savedInstanceState) {
71        super.onCreate(savedInstanceState);
72
73        mState = ApplicationsState.getInstance(getActivity().getApplication());
74        mSession = mState.newSession(this);
75        Context context = getActivity();
76        mDpm = (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);
77        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
78        mPm = context.getPackageManager();
79        IBinder b = ServiceManager.getService(Context.USB_SERVICE);
80        mUsbManager = IUsbManager.Stub.asInterface(b);
81
82        // Need to make sure we have loaded applications at this point.
83        mSession.resume();
84
85        retrieveAppEntry();
86    }
87
88    @Override
89    public void onResume() {
90        super.onResume();
91        mAppControlRestricted = mUserManager.hasUserRestriction(UserManager.DISALLOW_APPS_CONTROL);
92        mSession.resume();
93
94        if (!refreshUi()) {
95            setIntentAndFinish(true, true);
96        }
97    }
98
99    @Override
100    public void onPause() {
101        super.onPause();
102        mSession.pause();
103    }
104
105    @Override
106    public void onDestroyView() {
107        super.onDestroyView();
108        mSession.release();
109    }
110
111    protected String retrieveAppEntry() {
112        final Bundle args = getArguments();
113        mPackageName = (args != null) ? args.getString(ARG_PACKAGE_NAME) : null;
114        if (mPackageName == null) {
115            Intent intent = (args == null) ?
116                    getActivity().getIntent() : (Intent) args.getParcelable("intent");
117            if (intent != null) {
118                mPackageName = intent.getData().getSchemeSpecificPart();
119            }
120        }
121        mUserId = UserHandle.myUserId();
122        mAppEntry = mState.getEntry(mPackageName, mUserId);
123        if (mAppEntry != null) {
124            // Get application info again to refresh changed properties of application
125            try {
126                mPackageInfo = mPm.getPackageInfo(mAppEntry.info.packageName,
127                        PackageManager.GET_DISABLED_COMPONENTS |
128                        PackageManager.GET_UNINSTALLED_PACKAGES |
129                        PackageManager.GET_SIGNATURES);
130            } catch (NameNotFoundException e) {
131                Log.e(TAG, "Exception when retrieving package:" + mAppEntry.info.packageName, e);
132            }
133        } else {
134            Log.w(TAG, "Missing AppEntry; maybe reinstalling?");
135            mPackageInfo = null;
136        }
137
138        return mPackageName;
139    }
140
141    protected void setIntentAndFinish(boolean finish, boolean appChanged) {
142        if (localLOGV) Log.i(TAG, "appChanged="+appChanged);
143        Intent intent = new Intent();
144        intent.putExtra(ManageApplications.APP_CHG, appChanged);
145        SettingsActivity sa = (SettingsActivity)getActivity();
146        sa.finishPreferencePanel(this, Activity.RESULT_OK, intent);
147    }
148
149    protected void showDialogInner(int id, int moveErrorCode) {
150        DialogFragment newFragment = new MyAlertDialogFragment(id, moveErrorCode);
151        newFragment.setTargetFragment(this, 0);
152        newFragment.show(getFragmentManager(), "dialog " + id);
153    }
154
155    protected abstract boolean refreshUi();
156    protected abstract AlertDialog createDialog(int id, int errorCode);
157
158    @Override
159    public void onRunningStateChanged(boolean running) {
160        // No op.
161    }
162
163    @Override
164    public void onRebuildComplete(ArrayList<AppEntry> apps) {
165        // No op.
166    }
167
168    @Override
169    public void onPackageIconChanged() {
170        // No op.
171    }
172
173    @Override
174    public void onPackageSizeChanged(String packageName) {
175        // No op.
176    }
177
178    @Override
179    public void onAllSizesComputed() {
180        // No op.
181    }
182
183    @Override
184    public void onLauncherInfoChanged() {
185        // No op.
186    }
187
188    @Override
189    public void onLoadEntriesCompleted() {
190        // No op.
191    }
192
193    @Override
194    public void onPackageListChanged() {
195        refreshUi();
196    }
197
198    public class MyAlertDialogFragment extends DialogFragment {
199        public MyAlertDialogFragment(int id, int errorCode) {
200            Bundle args = new Bundle();
201            args.putInt("id", id);
202            args.putInt("moveError", errorCode);
203            setArguments(args);
204        }
205
206        @Override
207        public Dialog onCreateDialog(Bundle savedInstanceState) {
208            int id = getArguments().getInt("id");
209            int errorCode = getArguments().getInt("moveError");
210            Dialog dialog = createDialog(id, errorCode);
211            if (dialog == null) {
212                throw new IllegalArgumentException("unknown id " + id);
213            }
214            return dialog;
215        }
216    }
217}
218