Use2GOnlyCheckBoxPreference.java revision e64151a3e3c27689f242fc59aa7d888cb70310f6 
1/*
2 * Copyright (C) 2009 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.phone;
18
19import android.content.Context;
20import android.os.AsyncResult;
21import android.os.Handler;
22import android.os.Message;
23import android.preference.CheckBoxPreference;
24import android.util.AttributeSet;
25import android.util.Log;
26
27import com.android.internal.telephony.Phone;
28
29public class Use2GOnlyCheckBoxPreference extends CheckBoxPreference {
30    private static final String LOG_TAG = "Use2GOnlyCheckBoxPreference";
31    private static final boolean DBG = true;
32
33    private Phone mPhone;
34    private MyHandler mHandler;
35
36    public Use2GOnlyCheckBoxPreference(Context context) {
37        this(context, null);
38    }
39
40    public Use2GOnlyCheckBoxPreference(Context context, AttributeSet attrs) {
41        this(context, attrs,com.android.internal.R.attr.checkBoxPreferenceStyle);
42    }
43
44    public Use2GOnlyCheckBoxPreference(Context context, AttributeSet attrs, int defStyle) {
45        super(context, attrs, defStyle);
46        mPhone = PhoneApp.getPhone();
47        mHandler = new MyHandler();
48        mPhone.getPreferredNetworkType(
49                mHandler.obtainMessage(MyHandler.MESSAGE_GET_PREFERRED_NETWORK_TYPE));
50    }
51
52    @Override
53    protected void  onClick() {
54        super.onClick();
55
56        int networkType = isChecked() ? Phone.NT_MODE_GSM_ONLY : Phone.NT_MODE_WCDMA_PREF;
57        Log.i(LOG_TAG, "set preferred network type="+networkType);
58        android.provider.Settings.Secure.putInt(mPhone.getContext().getContentResolver(),
59                android.provider.Settings.Secure.PREFERRED_NETWORK_MODE, networkType);
60        mPhone.setPreferredNetworkType(networkType, mHandler
61                .obtainMessage(MyHandler.MESSAGE_SET_PREFERRED_NETWORK_TYPE));
62   }
63
64    private class MyHandler extends Handler {
65
66        private static final int MESSAGE_GET_PREFERRED_NETWORK_TYPE = 0;
67        private static final int MESSAGE_SET_PREFERRED_NETWORK_TYPE = 1;
68
69        @Override
70        public void handleMessage(Message msg) {
71            switch (msg.what) {
72                case MESSAGE_GET_PREFERRED_NETWORK_TYPE:
73                    handleGetPreferredNetworkTypeResponse(msg);
74                    break;
75
76                case MESSAGE_SET_PREFERRED_NETWORK_TYPE:
77                    handleSetPreferredNetworkTypeResponse(msg);
78                    break;
79            }
80        }
81
82        private void handleGetPreferredNetworkTypeResponse(Message msg) {
83            AsyncResult ar = (AsyncResult) msg.obj;
84
85            if (ar.exception == null) {
86                int type = ((int[])ar.result)[0];
87                Log.i(LOG_TAG, "get preferred network type="+type);
88                setChecked(type == Phone.NT_MODE_GSM_ONLY);
89                android.provider.Settings.Secure.putInt(mPhone.getContext().getContentResolver(),
90                        android.provider.Settings.Secure.PREFERRED_NETWORK_MODE, type);
91            } else {
92                // Weird state, disable the setting
93                Log.i(LOG_TAG, "get preferred network type, exception="+ar.exception);
94                setEnabled(false);
95            }
96        }
97
98        private void handleSetPreferredNetworkTypeResponse(Message msg) {
99            AsyncResult ar = (AsyncResult) msg.obj;
100
101            if (ar.exception != null) {
102                // Yikes, error, disable the setting
103                setEnabled(false);
104                // Set UI to current state
105                Log.i(LOG_TAG, "set preferred network type, exception=" + ar.exception);
106                mPhone.getPreferredNetworkType(obtainMessage(MESSAGE_GET_PREFERRED_NETWORK_TYPE));
107            } else {
108                Log.i(LOG_TAG, "set preferred network type done");
109            }
110        }
111    }
112}
113