How to use a String outside onCreate method - string

Question

I have the following code in my onCreate method:
Bundle appleData = getIntent().getExtras();
if(appleData==null) {
return;
}
String appleMessage = appleData.getString("appleMessage");
final TextView texttest = (TextView) findViewById(R.id.texttest);
texttest.setText(appleMessage);
I want to use the string stored in appleMessage in a different method on the same activity that is outside of onCreate, how do I go about doing this?

Answer 1

You should declare a String attribute outside of the onCreate method. For example:
private String appleMessage;
Then, inside your onCreate, simply change this line:
appleMessage = appleData.getString("appleMessage");
When you want to use it on other method, just call it. Its value will be the value setted on the onCreated method.

Answer 2

If you need it in several places in the class then you can make it a member variable by declaring it outside of a method
public class SomeClass extends Activity {
String appleMessage = "default text";
but if you only need it in one method you can simply pass it to the method call if you are calling the method in onCreate()
public void onCreate(Bundle bundle) {
...
String appleMessage = appleData.getString("appleMessage");
final TextView texttest = (TextView) findViewById(R.id.texttest);
texttest.setText(appleMessage);
// here
myMethod(appleMessage);
}
assuming myMethod takes a String as a parameter.
I also suggest you read the java docs and some basic tutorials before continuing with Android. It will make your life much easier.

Answer 3

Create a member variable on the class, which is set inside the onCreate method.
See here for more information on instance/member variables.
So:
class SomeClass extends Activity {
private String appleMessage;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
appleMessage = ...
}
public void otherMethod() {
Log.e("LOG", "Here is appleMessage: " + appleMessage);
}
}

Answer 4

Declare it inside your class and no in the method.
e.g.
private String appleMessage;
and use getters and setters for it
public String getAppleMessage(){
return appleMessage;
}