When you want to start Vpn we can do :
VpnService.prepare(activity)
Then :
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
super.onActivityResult(requestCode, resultCode, data)
if (requestCode == REQUEST_VPN && resultCode == AppCompatActivity.RESULT_OK) {
}
}
}
But we i do it out side of the activity i do it like that :
private void setupVPN() {
if (vpnInterface == null) {
jni_context = jni_init(Build.VERSION.SDK_INT);
Builder builder = new Builder();
builder.addAddress(VPN_ADDRESS, 1);
vpnInterface = getBuilder().establish();//.setSession(getString(R.string.app_name)).setConfigureIntent(pendingIntent).establish();
if (vpnInterface != null) {
startNative();
} else {
// vpn failed to establish, prepare may not call or called but not yey prepared,
// we will try 3 times or destroy vpn
Timber.e("vpnInterface failed to establish");
vpnSetupAttempts++;
if (vpnSetupAttempts < 4) {
VpnService.prepare(this);
final Handler handler = new Handler(Looper.getMainLooper());
handler.postDelayed(this::setupVPN, 2000);
} else {
vpnSetupAttempts = 0;
logNonFatalException("vpnInterface failed to establish");
stopVpn();
}
}
}
}
So basically i"m waiting for VPN to be prepared without indication, This is working but not feel like a good practice, is there any other method that is possible to listen when the VPN is prepared? some kind of listener?
