Android Question Information about second SIM in dual SIM phones

[viljemto]

Hi!
I see that a lot of people are trying to access second SIM in dual SIM phones.

I have managed to extract methods from TelephonyManager class. Here are some that indications, where to get information for SIM1 and/or SIM2.

Now it would be great if somehow I was able to call this from B4A. Is this possible?

With regards, Viljem

public static boolean android.telephony.TelephonyManager.dualGSMPhoneEnable()
public static boolean android.telephony.TelephonyManager.dualPhoneEnable()

public int android.telephony.TelephonyManager.getNetworkType()
public int android.telephony.TelephonyManager.getNetworkTypeExt(int)

public java.lang.String android.telephony.TelephonyManager.getNetworkTypeName()
public java.lang.String android.telephony.TelephonyManager.getNetworkTypeNameExt(int)

public boolean android.telephony.TelephonyManager.isNetworkRoaming()
public boolean android.telephony.TelephonyManager.isNetworkRoamingExt(int)

public java.lang.String android.telephony.TelephonyManager.getSubscriberId()
public java.lang.String android.telephony.TelephonyManager.getSubscriberId(java.lang.String)
public java.lang.String android.telephony.TelephonyManager.getSubscriberIdExt(int)

private com.android.internal.telephony.IPhoneSubInfo android.telephony.TelephonyManager.getSubscriberInfo()
private com.android.internal.telephony.IPhoneSubInfo android.telephony.TelephonyManager.getSubscriberInfoExt(int)

 

[Erel]

Where did you see references to these two methods?
public static boolean android.telephony.TelephonyManager.dualGSMPhoneEnable()
public static boolean android.telephony.TelephonyManager.dualPhoneEnable()

 

[viljemto]

With this:

TelephonyManager telephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
Class<?> telephonyClass = Class.forName(telephony.getClass().getName());
Class<?> c = telephonyClass;
 
for (Method method : c.getDeclaredMethods()) {
  System.out.println(method);
  }

 

[Erel]

This is not a standard API. Most phones will not have it.

You can use Reflection library to call it.

 

[viljemto]

Hi!

Yes, this is correct. I am working with HTC. For now, it will have to be different code, for different phones.

Do you have maybe some advice, how to call it?

 

[Erel]

Use Reflector.RunStaticMethod.

 

[viljemto]

Hi! In Eclipse, this is working for me. But I could not get working code in B4A with Reflector.RunStaticMethod. I am getting "ClassNotFoundException" or "NullPointerException". Can you please help convert code to B4A?

Dim r As Reflector
ToastMessageShow(r.RunStaticMethod("android.telephony.TelephonyManager",  "isNetworkRoamingExt", Array As Object(1), Array As String("java.lang.int") ), False)

TelephonyManager telephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
Class<?> telephonyClass = Class.forName(telephony.getClass().getName());

Class<?>[] parameter = new Class[1];
parameter[0] = int.class;
Method getSimID = telephonyClass.getMethod("getNetworkOperatorExt", parameter); //name of class

Object[] obParameter = new Object[1];
obParameter[0] = 0; //SIM ID 0,1...
Object ob_phone = getSimID.invoke(telephony, obParameter);

String value = ob_phone.toString();

 

[Erel]

If the Java code is working then you should convert it to a small library. It is easy with SLC tool.

 

[viljemto]

I was thinking of that, but it is easier for having all code in B4A for debuging, develpment at this point.
I will take a look this tool. Before I was doing libraries in Eclipse.

At this point...do you maybe have any idea, what I am doing wrong? Thank you!

 

[viljemto]

If the Java code is working then you should convert it to a small library. It is easy with SLC tool.

uff, you are correct. Many thanks to you.