在Windows Mobile的手機(jī)上面, RIL提供了訪問Radio模塊的接口, 下面以一個簡單的示例說明如何在C#中通過RIL獲得基站信息。
需要注意的是，下面的代碼可能無法在模擬器上面運(yùn)行，因為缺少必要的類庫，在真機(jī)上沒啥問題。
第一步. 定義必要的數(shù)據(jù)結(jié)構(gòu)和回調(diào)函數(shù)
1. 包含基站信息的RILCELLTOWERINFO類
public class RILCELLTOWERINFO
{
public uint cbSize;
public uint dwParams;
public uint dwMobileCountryCode;//中國的MCC為460
public uint dwMobileNetworkCode;
public uint dwLocationAreaCode;
public uint dwCellID;
public uint dwBaseStationID;
public uint dwBroadcastControlChannel;
public uint dwRxLevel;
public uint dwRxLevelFull;
public uint dwRxLevelSub;
public uint dwRxQuality;
public uint dwRxQualityFull;
public uint dwRxQualitySub;
public uint dwIdleTimeSlot;
public uint dwTimingAdvance;
public uint dwGPRSCellID;
public uint dwGPRSBaseStationID;
public uint dwNumBCCH;
}
2.用于異步返回RIL調(diào)用結(jié)果的回調(diào)函數(shù)RILRESULTCALLBACK
public delegate void RILRESULTCALLBACK(uint dwCode,
IntPtr hrCmdID,
IntPtr lpData,
uint cbData,
uint dwParam);
3.在RIL主動發(fā)出notify的時候回調(diào)的提醒函數(shù)RILNOTIFYCALLBACK
public delegate void RILNOTIFYCALLBACK(uint dwCode,
IntPtr lpData,
uint cbData,
uint dwParam);
注意：這個提醒函數(shù)后面不會用到，但它是作為必要的Native函數(shù)的參數(shù)，在pinvoke的時候是不可缺少的
第二步. 通過pinvoke引用必要的RIL Native函數(shù)
RIL_Initialize ， RIL_GetCellTowerInfo，RIL_Deinitialize
[DllImport("ril.dll")]
private static extern IntPtr RIL_Initialize(uint dwIndex,
RILRESULTCALLBACK pfnResult,
RILNOTIFYCALLBACK pfnNotify,
uint dwNotificationClasses,
uint dwParam,
out IntPtr lphRil);
[DllImport("ril.dll")]
private static extern IntPtr RIL_GetCellTowerInfo(IntPtr hRil);
[DllImport("ril.dll")]
private static extern IntPtr RIL_Deinitialize(IntPtr hRil);
第三步. 通過RIL_GetCellTowerInfo獲取基站信息
1.初始化一個RIL的實例并返回它的Handle
hRes = RIL_Initialize(1, // RIL port 1
new RILRESULTCALLBACK(rilResultCallback), // 返回調(diào)用結(jié)果的回調(diào)函數(shù)
null, 0, 0,
out hRil); //返回RIL實例的handle
2.定義回調(diào)函數(shù)
private static AutoResetEvent waithandle = new AutoResetEvent(false);
public static void rilResultCallback(uint dwCode,
IntPtr hrCmdID,
IntPtr lpData,
uint cbData,
uint dwParam)
{
//構(gòu)造一個RILCELLTOWERINFO類用于存放數(shù)據(jù)
rilCellTowerInfo = new RILCELLTOWERINFO();
Marshal.PtrToStructure(lpData, rilCellTowerInfo);
//回調(diào)通知
waithandle.Set();}
3.調(diào)用RIL_GetCellTowerInfo并釋放當(dāng)前RIL實例的handle
RIL_GetCellTowerInfo(hRil);
//等待回調(diào)函數(shù)返回
waithandle.WaitOne();
//釋放RIL handle
RIL_Deinitialize(hRil);
結(jié)果與分析：
以下是在samsungi718+上的測試結(jié)果：
-rilCellTowerInfo ：
cbSize 2164262660 uint
dwBaseStationID 706412084 uint
dwBroadcastControlChannel 0 uint
dwCellID 0 uint //其實這里的cellid在我機(jī)器上獲取不到，確實非常遺憾
dwGPRSBaseStationID 706412084 uint
dwGPRSCellID 158440 uint
dwIdleTimeSlot 33993204 uint
dwLocationAreaCode 706412076 uint
dwMobileCountryCode 0 uint //這個MCC中國應(yīng)該是460，我這里也沒有獲取到
dwMobileNetworkCode 33993204 uint
dwNumBCCH 706411928 uint
dwParams 0 uint
dwRxLevel 4 uint
dwRxLevelFull 0 uint
dwRxLevelSub 706412004 uint
dwRxQuality 706411908 uint
dwRxQualityFull 158172 uint
dwRxQualitySub 67853664 uint
dwTimingAdvance 0 uint
需要注意的是這里的CellTowerInfo在各個機(jī)型上面的實現(xiàn)程度不一樣，文中提到的RIL相關(guān)函數(shù)嚴(yán)格來說在Windows Mobile 上面都不是必須被實現(xiàn)的，使用時需考慮到這一點(diǎn)。
實現(xiàn)代碼：
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
public delegate void RILRESULTCALLBACK(uint dwCode,
IntPtr hrCmdID,
IntPtr lpData,
uint cbData,
uint dwParam);
public delegate void RILNOTIFYCALLBACK(uint dwCode,
IntPtr lpData,
uint cbData,
uint dwParam);
[DllImport("ril.dll")]
private static extern IntPtr RIL_Initialize(uint dwIndex,
RILRESULTCALLBACK pfnResult,
RILNOTIFYCALLBACK pfnNotify,
uint dwNotificationClasses,
uint dwParam,
out IntPtr lphRil);
[DllImport("ril.dll")]
private static extern IntPtr RIL_GetCellTowerInfo(IntPtr hRil);
[DllImport("ril.dll")]
private static extern IntPtr RIL_Deinitialize(IntPtr hRil);
private static AutoResetEvent waithandle = new AutoResetEvent(false);
private static RILCELLTOWERINFO rilCellTowerInfo;
private IntPtr hRes;
private IntPtr hRil;
public static void rilResultCallback(uint dwCode,
IntPtr hrCmdID,
IntPtr lpData,
uint cbData,
uint dwParam)
{
//構(gòu)造一個RILCELLTOWERINFO類用于存放數(shù)據(jù)
rilCellTowerInfo = new RILCELLTOWERINFO();
Marshal.PtrToStructure(lpData, rilCellTowerInfo);
//回調(diào)通知
waithandle.Set();
}
private void button1_Click(object sender, EventArgs e)
{
hRes = RIL_Initialize(1, // RIL port 1
new RILRESULTCALLBACK(rilResultCallback), // 返回調(diào)用結(jié)果的回調(diào)函數(shù)
null, 0, 0,
out hRil);
//返回RIL實例的handle
RIL_GetCellTowerInfo(hRil);
//等待回調(diào)函數(shù)返回
waithandle.WaitOne();
//釋放RIL handle
RIL_Deinitialize(hRil);
}
}
public class RILCELLTOWERINFO
{
public uint cbSize;
public uint dwParams;
public uint dwMobileCountryCode;//中國的MCC為460
public uint dwMobileNetworkCode;
public uint dwLocationAreaCode;
public uint dwCellID;
public uint dwBaseStationID;
public uint dwBroadcastControlChannel;
public uint dwRxLevel;
public uint dwRxLevelFull;
public uint dwRxLevelSub;
public uint dwRxQuality;
public uint dwRxQualityFull;
public uint dwRxQualitySub;
public uint dwIdleTimeSlot;
public uint dwTimingAdvance;
public uint dwGPRSCellID;
public uint dwGPRSBaseStationID;
public uint dwNumBCCH;
}
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posted on 2011-06-19 18:22
TiGERTiAN 閱讀(2306)
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