java.lang.RuntimeException: Unable to resume activity Android

Question

I am trying to get the device bluetooth address so when ever I click on send

startActivityForResult(new Intent(getApplicationContext(),
                        DeviceListActivity.class), GET_DEVICE_TO_SEND);

file via bluetooth the Discovery starts when its done I select one of founded devices

at the onActivityResult I have these code

if (requestCode == GET_DEVICE_TO_SEND && resultCode == RESULT_OK) {
String device = data
.getStringExtra(DeviceListActivity.DEVICE_ADDRESS);
String name = data.getStringExtra(DeviceListActivity.DEVICE_NAME);

the function onActivityResult is called and then the application stopp

The class: MainUI contains the Tabhost .

the class :FilesUI is where the function onActivityResult is located

The log

03-19 18:39:28.858: E/AndroidRuntime(22817): java.lang.RuntimeException: Unable to resume activity {com.android.Connect/com.android.Connect.UI.MainUI}: java.lang.RuntimeException:`enter code here` Failure delivering result ResultInfo{who=Files, request=1, result=-1, data=Intent { (has extras) }} to activity {com.android.Connect/com.android.Connect.UI.MainUI}: java.lang.NullPointerException

Answer 1

the problem is here

  String msg = "file," + fileToSend.getName() + "," + readFileAsString(fileToSend.getPath()); Log.d(TAG, "the file " + msg);