我在Google Play上（来自同一用户）收到了一些有关CdmaCellLocation的报告：
java.lang.ClassCastException: android.telephony.cdma.CdmaCellLocation
这是一项使用Cell Network报告近似用户位置的服务，请注意，该服务100％为我服务，我没有关于此Bug的其他任何报告，此处是onStart（）中的代码：
public class ServiceLocation extends Service{
int myLatitude , myLongitude;
private String str2;
static SharedPreferences prefs;
private String numtosend;
public int onStartCommand(Intent itn,int num1, int num2){
prefs = getSharedPreferences("Preferences",
Context.MODE_PRIVATE);
if(isAirplaneModeOn(this)){
stopSelf();
}
Bundle extras = itn.getExtras();
if(extras.containsKey("ExtraName") != true){
str2 = itn.getStringExtra("Number");
}
location(str2);
return 0;
}
这里的位置方法代码：
public void location(String num){
// TODO Auto-generated method stub
TelephonyManager telephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
if(telephonyManager.getSimState() != TelephonyManager.SIM_STATE_ABSENT){
numtosend = "Phone Number (If Avaible) : " + " " + telephonyManager.getLine1Number() + " " + " Sim Serial : " + telephonyManager.getSimSerialNumber() + " " + "IMEI : " + telephonyManager.getDeviceId();
}
else {
numtosend = this.getResources().getString(R.string.txtNoSimCard) + telephonyManager.getDeviceId();
}
GsmCellLocation cellLocation = (GsmCellLocation) telephonyManager.getCellLocation();
int cid = cellLocation.getCid();
int lac = cellLocation.getLac();
if(RqsLocation(cid, lac)){
if(str2.equals("") != true && str2.equals(null) != true) {
SmsManager.getDefault().sendTextMessage(num, null, this.getResources().getString(R.string.txtGPSPosition) + "(40-250 Meters Accuracy) : "+"http://maps.google.com/?q="+String.valueOf((float)myLatitude/1000000) +","+String.valueOf((float)myLongitude/1000000), null, null);
}
if(gmailaccount.equals("") != true && gmailpass.equals(null) != true){
P m = new P(gmailaccount , gmailpass);
String[] Mail = {mail};
m.setTo(Mail);
m.setFrom("[email protected]");
m.setSubject("Location");
m.setBody(this.getResources().getString(R.string.txtGPSPosition) + "(~300 Meters Accuracy) : " + "http://maps.google.com/?q="+String.valueOf((float)myLatitude/1000000) +","+String.valueOf((float)myLongitude/1000000) + " " + str2 + " " + numtosend);
try {
if(m.send()){
stopSelf();
}
else {
if(str2.equals("") != true) {
SmsManager.getDefault().sendTextMessage(str2, null, "Impossible to Send a Message to your Emergency Mail Address !", null, null);
}
stopSelf();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
else{
if(str2.equals("") != true && str2.equals(null) != true) {
SmsManager.getDefault().sendTextMessage(num, null, this.getResources().getString(R.string.txtInternetOffLocation), null, null);
}
if(gmailaccount.equals("") != true && gmailpass.equals(null) != true){
P m = new P(gmailaccount , gmailpass);
String[] Mail = {mail};
m.setTo(Mail);
m.setFrom("[email protected]");
m.setSubject("Location");
m.setBody(this.getResources().getString("Internet Off));
try {
if(m.send()){
stopSelf();
}
else {
if(str2.equals("") != true) {
}
stopSelf();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
stopSelf();
}
最后，来自Google Play的LogCat：
java.lang.RuntimeException: Unable to start service com.xxx.xxx.xxx.ServiceLocation@4051b930 with Intent { cmp=com.xxx.xxx.xxx/.ServiceLocation (has extras) }: java.lang.ClassCastException: android.telephony.cdma.CdmaCellLocation
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2052)
at android.app.ActivityThread.access$2800(ActivityThread.java:117)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:994)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:130)
at android.app.ActivityThread.main(ActivityThread.java:3683)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:875)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:633)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassCastException: android.telephony.cdma.CdmaCellLocation
at com.xxx.xxx.xxx.ServiceLocation.location(ServiceLocation.java:83)
at com.xxx.xxx.xxx.ServiceLocation.onStartCommand(ServiceLocation.java:53)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2039)
... 10 more
您认为这是电话提供商的问题，还是来自平板电脑？
[非主题]顺便说一下，我在哪里以及如何报告此：
最佳答案
GsmCellLocation cellLocation = (GsmCellLocation) telephonyManager.getCellLocation();
这是不安全的演员。您的代码假定此方法将始终返回
GsmCellLocation的实例，但事实并非如此。有两种类型的蜂窝网络。 GSM和CDMA。如果电话在CDMA网络上运行，则
getCellLocation()将返回CdmaCellLocation的实例。您可以调用
telephonyManager.getPhoneType()获取有关设备使用的无线电类型的信息。此方法将返回以下四个值之一：PHONE_TYPE_NONE-设备没有蜂窝无线电。例如，它可能是没有3G调制解调器的平板电脑。
getCellLocation()将返回null。PHONE_TYPE_GSM-设备具有GSM无线电。您可以安全地致电
(GsmCellLocation) telephonyManager.getCellLocation();PHONE_TYPE_CDMA-设备具有GSM无线电。您可以安全地致电
(CdmaCellLocation) telephonyManager.getCellLocation();PHONE_TYPE_SIP-设备正在使用SIP（会话初始协议）进行通信。
getCellLocation()将返回null。关于android - 尝试使用电话类获取单元格位置时发生ClassCastExeption错误，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/15191316/