Develop Reference

What do I have to do to launch phone internet settings dialog?

I have tried to set mobile data. But it just worked for only SIM 1 .
public static void setMobileData(Context context, boolean isEnabled) throws NoSuchFieldException, ClassNotFoundException, IllegalAccessException, NoSuchMethodException, InvocationTargetException {
ConnectivityManager conman = (ConnectivityManager) context.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
#SuppressWarnings("rawtypes")
final Class conmanClass = Class.forName(conman.getClass().getName());
final Field iConnectivityManagerField = conmanClass.getDeclaredField("mService");
iConnectivityManagerField.setAccessible(true);
final Object iConnectivityManager = iConnectivityManagerField.get(conman);
final Class iConnectivityManagerClass = Class.forName(iConnectivityManager.getClass().getName());
Class[] cArg = new Class[2];
cArg[0] = String.class;
cArg[1] = Boolean.TYPE;
Method setMobileDataEnabledMethod;
setMobileDataEnabledMethod = iConnectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", cArg);
Object[] pArg = new Object[2];
pArg[0] = context.getPackageName();
pArg[1] = isEnabled;
setMobileDataEnabledMethod.setAccessible(true);
setMobileDataEnabledMethod.invoke(iConnectivityManager, pArg);
}
public static void setMobileData2(Context context, boolean isEnabled) throws NoSuchMethodException, ClassNotFoundException, IllegalAccessException, NoSuchFieldException, InvocationTargetException {
final ConnectivityManager conman = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
final Class conmanClass = Class.forName(conman.getClass().getName());
final Field iConnectivityManagerField = conmanClass.getDeclaredField("mService");
iConnectivityManagerField.setAccessible(true);
final Object iConnectivityManager = iConnectivityManagerField.get(conman);
final Class iConnectivityManagerClass = Class.forName(iConnectivityManager.getClass().getName());
final Method setMobileDataEnabledMethod = iConnectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE);
setMobileDataEnabledMethod.setAccessible(true);
setMobileDataEnabledMethod.invoke(iConnectivityManager, isEnabled);
}
public static boolean setMobileData3(Context context, boolean isEnable) {
boolean mobileDataAllowed = Settings.Secure.putInt(context.getContentResolver(), "mobile_data", isEnable?1:0);
return mobileDataAllowed;
}
But now I just want to launch that default mobile selection Dialog . If you have Any idea to launch that dialog let me know.. thanks in advance.
.

Multi SIM support is added in android lollipop 5.1 onwards only. Prior to that different phone manufacturers have their own custom implementation for supporting Multi SIM and respective settings. Hence if you are targeting for general solution it is not possible to achieve. Even on 5.1, there is no direct intent to launch this particular setting but using a hack you may achieve provided manufacturers should use only Google solution otherwise it will not work.

You have to start intent for settings like this.
startActivityForResult(new Intent(android.provider.Settings.ACTION_DATA_ROAMING_SETTINGS), 0);
'Note'
There are also settings of WIFI and more .Explore it the much you want. like this
android.provider.Settings.ACTION_WIFI_SETTINGS

I have tried to open internet setting thriugh my application but it is by default functionality that it opens internet only the default sim i.e. Sim 1.You have to redirect user on to the setting screen using intent
Intent intent = new Intent(Settings.ACTION_WIFI_SETTINGS);
startActivity(intent);

Can I use private API in my application then upload to Google play market?

In my application, I used a snippet code below
public static void setMobileDataEnabled(Context context, boolean enabled) {
try {
final ConnectivityManager conman = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
final Class<?> conmanClass = Class.forName(conman.getClass().getName());
final Field iConnectivityManagerField = conmanClass.getDeclaredField("mService");
iConnectivityManagerField.setAccessible(true);
final Object iConnectivityManager = iConnectivityManagerField.get(conman);
final Class<?> iConnectivityManagerClass = Class.forName(iConnectivityManager.getClass().getName());
final Method setMobileDataEnabledMethod = iConnectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE);
setMobileDataEnabledMethod.setAccessible(true);
setMobileDataEnabledMethod.invoke(iConnectivityManager, enabled);
} catch (Exception e) {
e.printStackTrace();
}
Can anyone know when I used this code in my application, Google still allows me to upload my app, or will prevent/reject - because it is private API / forbidden API?

Yes, it is supported, and even recommended in the situation where you want compatibility with multiple versions of the Android OS in one apk file.
You can check the article from android official blog about reflection.
http://android-developers.blogspot.com.br/2009/04/backward-compatibility-for-android.html

Turn on/off mobile network connection programmatically in android jelly bean

I am using below code to turn on/off mobile network.
final ConnectivityManager conman = (ConnectivityManager) getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
final Class conmanClass = Class.forName(conman.getClass().getName());
final Field iConnectivityManagerField = conmanClass.getDeclaredField("mService");
iConnectivityManagerField.setAccessible(true);
final Object iConnectivityManager = iConnectivityManagerField.get(conman);
final Class iConnectivityManagerClass = Class.forName(iConnectivityManager.getClass().getName());
final Method setMobileDataEnabledMethod = iConnectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE);
setMobileDataEnabledMethod.setAccessible(true);
setMobileDataEnabledMethod.invoke(iConnectivityManager, ON);
I tested this code with Android 2.3.X, 4.0.X and 4.1.X. It is working with only 2.3.X and 4.0.X but failed with 4.1.X.
I am getting java.lang.NoSuchFieldException: mService exception while testing with Android Jelly Bean.
Is there any other solution to my problem? I added all required permissions in manifest file.

try
{
dataMtd = ConnectivityManager.class.getDeclaredMethod("setMobileDataEnabled", boolean.class);
}
catch (SecurityException e1)
{
e1.printStackTrace();
}
catch (NoSuchMethodException e1)
{
e1.printStackTrace();
}
dataMtd.setAccessible(true);
try {
dataMtd.invoke(conm,true);
}
}
Where datamtd is a method.. Try with this my friend. I found it successful in my previous app. Hope this may help you. Sorry if not, since I'm not much experienced.:)

Enable/Disable Mobile Data (GPRS) using code on Froyo 2.2

I'm trying to Enable / Disable Mobile Data Connexion.
I've used this code by rIHaN JiTHiN (Enable/Disable Mobile Data (GPRS) using code) and it's works perfectly on Android 4.0, but it's doesn't on my Galaxy S (Froyo 2.2)...
Is there a way to enable / disable data connexion programmatically ?
If anyone had any idea why it's doesn't work on Froyo, would be really helpful. According to rIHaN JiTHiN, this code works on all Android version...

You can check whether it is enabled or disabled by using below code
ConnectivityManager connManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
NetworkInfo mMobile = connManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if (mMobile.isConnected()) {
//if internet connected
}
if it is disabled, you can enable it on your froyo device by using this one
void turnData(boolean ON) throws Exception
{
if(bv == Build.VERSION_CODES.FROYO)
{
Log.i("version:", "Found Froyo");
try{
Method dataConnSwitchmethod;
Class telephonyManagerClass;
Object ITelephonyStub;
Class ITelephonyClass;
TelephonyManager telephonyManager = (TelephonyManager) getApplicationContext().getSystemService(Context.TELEPHONY_SERVICE);
telephonyManagerClass = Class.forName(telephonyManager.getClass().getName());
Method getITelephonyMethod = telephonyManagerClass.getDeclaredMethod("getITelephony");
getITelephonyMethod.setAccessible(true);
ITelephonyStub = getITelephonyMethod.invoke(telephonyManager);
ITelephonyClass = Class.forName(ITelephonyStub.getClass().getName());
if (ON) {
dataConnSwitchmethod = ITelephonyClass.getDeclaredMethod("enableDataConnectivity");
} else {
dataConnSwitchmethod = ITelephonyClass.getDeclaredMethod("disableDataConnectivity");
}
dataConnSwitchmethod.setAccessible(true);
dataConnSwitchmethod.invoke(ITelephonyStub);
}catch(Exception e){
Log.e("Error:",e.toString());
}
}
else
{
Log.i("version:", "Found Gingerbread+");
final ConnectivityManager conman = (ConnectivityManager) getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
final Class conmanClass = Class.forName(conman.getClass().getName());
final Field iConnectivityManagerField = conmanClass.getDeclaredField("mService");
iConnectivityManagerField.setAccessible(true);
final Object iConnectivityManager = iConnectivityManagerField.get(conman);
final Class iConnectivityManagerClass = Class.forName(iConnectivityManager.getClass().getName());
final Method setMobileDataEnabledMethod = iConnectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE);
setMobileDataEnabledMethod.setAccessible(true);
setMobileDataEnabledMethod.invoke(iConnectivityManager, ON);
}
and also dont forget to add these to manifest
android.permission.UPDATE_DEVICE_STATS
android.permission.CHANGE_NETWORK_STATE
android.permission.ACCESS_NETWORK_STATE
android.permission.MODIFY_PHONE_STATE
android.permission.READ_PHONE_STATE

Data connection enable/disable code crashes inside a android service

void turnData(boolean ON)
{
final ConnectivityManager conman = (ConnectivityManager) getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
final Class conmanClass = Class.forName(conman.getClass().getName());
final Field iConnectivityManagerField = conmanClass.getDeclaredField("mService");
iConnectivityManagerField.setAccessible(true);
final Object iConnectivityManager = iConnectivityManagerField.get(conman);
final Class iConnectivityManagerClass = Class.forName(iConnectivityManager.getClass().getName());
final Method setMobileDataEnabledMethod = iConnectivityManagerClass.getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE);
setMobileDataEnabledMethod.setAccessible(true);
setMobileDataEnabledMethod.invoke(iConnectivityManager, ON);
}
The above code is to enable/disable Data Connection in android 2.
3+.
It works without any errors when I run it in an Activity. But when i tried to run it inside a service the application crashed. Can anyone tell me why this happened?

Problem solved by adding the following additional permissions to the Manifest file:
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>