setMobileDataEnabled.java

public void setMobileDataEnabled(boolean mobileDataEnabled) {
    try {
        Object connectivityManager = this.ctx.getSystemService("connectivity");
        Field mServiceField = Class.forName(connectivityManager.getClass().getName()).getDeclaredField("mService");
        mServiceField.setAccessible(true);
        connectivityManager = mServiceField.get(connectivityManager);
        Method setMobileDataEnabledMethod = Class.forName(connectivityManager.getClass().getName()).getDeclaredMethod("setMobileDataEnabled", Boolean.TYPE);
        setMobileDataEnabledMethod.setAccessible(true);
        setMobileDataEnabledMethod.invoke(connectivityManager, Boolean.valueOf(mobileDataEnabled));
    }
    catch(Exception ex) {
        ex.printStackTrace();
    }
}