CODEWITHSUNDEEP
androidandroid-activity
X Pahadi
X Pahadi

Reputation: 7463

Use Variable as Class Name in Android Activity

I have to start activity that makes use of some Variables as the Class Names. Is there a Solution out?

public void something(int position) {

        someVar = "MyActivity"+position;

        startActivity(new Intent(Main.this,someVar.class));

}

Upvotes: 0

Views: 1427

Answers (4)

Jojo the man
Jojo the man

Reputation: 1

For anyone still confused and looking for "The Solution" not the "Work-Arounds", it's very simple to pass a class reference as a variable, put into consideration that this example is derived from an Android context: Variable is: Class<? extends package.ClassNameHere> variableName;

Upvotes: 0

anon
anon

Reputation:

You can use reflection to get the class type. Just make sure you include the package name in the string.

public void something(int position) throws ClassNotFoundException {

  Class<?> theClass = Class.forName("com.example.Activity" + position);

  startActivity(new Intent(this, theClass));

}

Upvotes: 0

frankelot
frankelot

Reputation: 14458

If there aren't too many activities, you can always do this:

Class myclass;

Switch(position){

    case 1:
        myclass = Activity1.class;
        break;
    case 2:
        myclass = Activity2.class;
        break;
    case 3:
        myclass = Activity3.class;
        break;
}

startActivity(new Intent(Main.this,myclass));

Upvotes: 2

njzk2
njzk2

Reputation: 39403

You don't actually need the class of the Activity you are starting. You can use a setClassName:

Intent i = new Intent();
i.setClassName(this, "MyActivity" + position);
startActivity(i);

Upvotes: 0

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