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 17 package com.android.phone; 18 19 import android.content.Context; 20 import android.os.AsyncResult; 21 import android.os.Handler; 22 import android.os.Message; 23 import android.os.SystemProperties; 24 import android.preference.CheckBoxPreference; 25 import android.util.AttributeSet; 26 import android.util.Log; 27 28 import com.android.internal.telephony.Phone; 29 30 public class Use2GOnlyCheckBoxPreference extends CheckBoxPreference { 31 private static final String LOG_TAG = "Use2GOnlyCheckBoxPreference"; 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 = PhoneGlobals.getPhone(); 47 mHandler = new MyHandler(); 48 mPhone.getPreferredNetworkType( 49 mHandler.obtainMessage(MyHandler.MESSAGE_GET_PREFERRED_NETWORK_TYPE)); 50 } 51 52 private int getDefaultNetworkMode() { 53 int mode = SystemProperties.getInt("ro.telephony.default_network", 54 Phone.PREFERRED_NT_MODE); 55 Log.i(LOG_TAG, "getDefaultNetworkMode: mode=" + mode); 56 return mode; 57 } 58 59 @Override 60 protected void onClick() { 61 super.onClick(); 62 63 int networkType = isChecked() ? Phone.NT_MODE_GSM_ONLY : getDefaultNetworkMode(); 64 Log.i(LOG_TAG, "set preferred network type="+networkType); 65 android.provider.Settings.Global.putInt(mPhone.getContext().getContentResolver(), 66 android.provider.Settings.Global.PREFERRED_NETWORK_MODE, networkType); 67 mPhone.setPreferredNetworkType(networkType, mHandler 68 .obtainMessage(MyHandler.MESSAGE_SET_PREFERRED_NETWORK_TYPE)); 69 } 70 71 private class MyHandler extends Handler { 72 73 static final int MESSAGE_GET_PREFERRED_NETWORK_TYPE = 0; 74 static final int MESSAGE_SET_PREFERRED_NETWORK_TYPE = 1; 75 76 @Override 77 public void handleMessage(Message msg) { 78 switch (msg.what) { 79 case MESSAGE_GET_PREFERRED_NETWORK_TYPE: 80 handleGetPreferredNetworkTypeResponse(msg); 81 break; 82 83 case MESSAGE_SET_PREFERRED_NETWORK_TYPE: 84 handleSetPreferredNetworkTypeResponse(msg); 85 break; 86 } 87 } 88 89 private void handleGetPreferredNetworkTypeResponse(Message msg) { 90 AsyncResult ar = (AsyncResult) msg.obj; 91 92 if (ar.exception == null) { 93 int type = ((int[])ar.result)[0]; 94 if (type != Phone.NT_MODE_GSM_ONLY) { 95 // Back to default 96 type = getDefaultNetworkMode(); 97 } 98 Log.i(LOG_TAG, "get preferred network type="+type); 99 setChecked(type == Phone.NT_MODE_GSM_ONLY); 100 android.provider.Settings.Global.putInt(mPhone.getContext().getContentResolver(), 101 android.provider.Settings.Global.PREFERRED_NETWORK_MODE, type); 102 } else { 103 // Weird state, disable the setting 104 Log.i(LOG_TAG, "get preferred network type, exception="+ar.exception); 105 setEnabled(false); 106 } 107 } 108 109 private void handleSetPreferredNetworkTypeResponse(Message msg) { 110 AsyncResult ar = (AsyncResult) msg.obj; 111 112 if (ar.exception != null) { 113 // Yikes, error, disable the setting 114 setEnabled(false); 115 // Set UI to current state 116 Log.i(LOG_TAG, "set preferred network type, exception=" + ar.exception); 117 mPhone.getPreferredNetworkType(obtainMessage(MESSAGE_GET_PREFERRED_NETWORK_TYPE)); 118 } else { 119 Log.i(LOG_TAG, "set preferred network type done"); 120 } 121 } 122 } 123 } 124