ApplicationSettings.java revision 519e3216099ebfca22451ccd437e6af244011c35 
1/*
2 * Copyright (C) 2008 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;
18
19import android.app.AlertDialog;
20import android.content.DialogInterface;
21import android.content.res.Configuration;
22import android.os.Bundle;
23import android.preference.CheckBoxPreference;
24import android.preference.Preference;
25import android.preference.PreferenceActivity;
26import android.preference.PreferenceScreen;
27import android.provider.Settings;
28
29public class ApplicationSettings extends PreferenceActivity implements
30        DialogInterface.OnClickListener {
31
32    private static final String KEY_TOGGLE_INSTALL_APPLICATIONS = "toggle_install_applications";
33    private static final String KEY_QUICK_LAUNCH = "quick_launch";
34
35    private CheckBoxPreference mToggleAppInstallation;
36
37    private DialogInterface mWarnInstallApps;
38
39    @Override
40    protected void onCreate(Bundle icicle) {
41        super.onCreate(icicle);
42
43        addPreferencesFromResource(R.xml.application_settings);
44
45        mToggleAppInstallation = (CheckBoxPreference) findPreference(KEY_TOGGLE_INSTALL_APPLICATIONS);
46        mToggleAppInstallation.setChecked(isNonMarketAppsAllowed());
47
48        if (getResources().getConfiguration().keyboard == Configuration.KEYBOARD_NOKEYS) {
49            // No hard keyboard, remove the setting for quick launch
50            Preference quickLaunchSetting = findPreference(KEY_QUICK_LAUNCH);
51            getPreferenceScreen().removePreference(quickLaunchSetting);
52        }
53    }
54
55    @Override
56    protected void onDestroy() {
57        super.onDestroy();
58        if (mWarnInstallApps != null) {
59            mWarnInstallApps.dismiss();
60        }
61    }
62
63    @Override
64    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
65        if (preference == mToggleAppInstallation) {
66            if (mToggleAppInstallation.isChecked()) {
67                mToggleAppInstallation.setChecked(false);
68                warnAppInstallation();
69            } else {
70                setNonMarketAppsAllowed(false);
71            }
72        }
73
74        return super.onPreferenceTreeClick(preferenceScreen, preference);
75    }
76
77    public void onClick(DialogInterface dialog, int which) {
78        if (dialog == mWarnInstallApps && which == DialogInterface.BUTTON1) {
79            setNonMarketAppsAllowed(true);
80            mToggleAppInstallation.setChecked(true);
81        }
82    }
83
84    private void setNonMarketAppsAllowed(boolean enabled) {
85        // Change the system setting
86        Settings.Secure.putInt(getContentResolver(), Settings.Secure.INSTALL_NON_MARKET_APPS,
87                                enabled ? 1 : 0);
88    }
89
90    private boolean isNonMarketAppsAllowed() {
91        return Settings.Secure.getInt(getContentResolver(),
92                                      Settings.Secure.INSTALL_NON_MARKET_APPS, 0) > 0;
93    }
94
95    private void warnAppInstallation() {
96        mWarnInstallApps = new AlertDialog.Builder(this)
97                .setTitle(getString(R.string.error_title))
98                .setIcon(com.android.internal.R.drawable.ic_dialog_alert)
99                .setMessage(getResources().getString(R.string.install_all_warning))
100                .setPositiveButton(android.R.string.yes, this)
101                .setNegativeButton(android.R.string.no, null)
102                .show();
103    }
104
105
106}
107