user3375184 user3375184 - 1 year ago 393
Android Question

getApplicationContext() error Android

I have a fragment that allows a user to enter in a message and a phone number to which the message will be delivered. I am getting an error "cannot resolve method getApplicationContext()" I have looked at the answer here the method getApplicationContext() is undefined but it didn't help me, maybe I am implementing it wrong but I am not sure! This code works fine as an activity but not as a fragment.

FragmentTab1 class

package com.androidbegin.absfragtabhost;

import android.content.Context;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.app.Fragment;
import android.app.Activity;
import android.telephony.SmsManager;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class FragmentTab3 extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragmenttab3, container, false);
super.onCreate(savedInstanceState);
//setContentView(R.layout.activity_main);

sendBtn = (Button) rootView.findViewById(R.id.btnSendSMS);
txtphoneNo = (EditText) rootView.findViewById(R.id.editTextPhoneNo);
txtMessage = (EditText) rootView.findViewById(R.id.editTextSMS);

sendBtn.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
sendSMSMessage();
}
});

return rootView;
}



Button sendBtn;
EditText txtphoneNo;
EditText txtMessage;



protected void sendSMSMessage() {
Log.i("Send SMS", "");

String phoneNo = txtphoneNo.getText().toString();
String message = txtMessage.getText().toString();

try {
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phoneNo, null, message, null, null);
Toast.makeText(getApplicationContext(), "SMS sent.",
Toast.LENGTH_LONG).show();
} catch (Exception e) {
Toast.makeText(getApplicationContext(),
"SMS failed, please try again.",
Toast.LENGTH_LONG).show();
e.printStackTrace();


}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}


}

Answer Source

The method getApplicationContext() does not exist in the class Fragment. It does exist, however, in the class Activity, so you can use getActivity().getApplicationContext() to get the context from within a fragment object. (Assuming the fragment is attached to an activity so getActivity() will return a non-null object, which is usually true)