expecting member declaration android studio java

expecting member declaration android studio java
You Need Java. You try to write in Kotlin. Java and Kotlin have different syntax and if you reproduce this tutorial word for word in Kotlin, it will fail.

Follow the turorial and write your code in Java. Switch to Kotlin later when you're more confident with what you're doing. Focus on one thing at a time.

2) Find views at the right time
The Activity object is instatiated for you by the framework with a public empty constructor. At this time there are no views to be found. If you call findViewById any time before setContentView it will return null and crash if you try to assign it to a non-nullable variable.

The above applies for both Java and Kotlin.

For Java follow the tutorial. It should look something like this:

Toolbar toolbar; // Declare the variable here so it's accessible outside of onCreate.

@Override
public void onCreate(@Nullable final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2); // Inflate view hierarchy.
toolbar = (Toolbar) view.findViewById(R.id.toolbar); // Find your views.
setSupportActionBar(toolbar);
}
In Kotlin there are several options.

You can use lateinit modifier which allows you to declare a non-nullable variable but assign it later in onCreate.

lateinit var toolbar: Toolbar

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main2)
toolbar = findViewById(R.id.toolbar) as Toolbar
setSupportActionBar(toolbar)
}

In Android Studio using Java, you can expect a member declaration to declare fields, methods, or inner classes within a class. Here's an example of member declarations in Android Studio using Java:

java

public class MyClass {
private int myField; // Field declaration

public MyClass() {
// Constructor
}

public void myMethod() {
// Method declaration
}

public class MyInnerClass {
// Inner class declaration
}
}

In the above example, myField is a field, myMethod() is a method, and MyInnerClass is an inner class. These declarations define the structure and behavior of the MyClass class. You can declare additional members within the class as per your requirements.

Remember to choose appropriate access modifiers (e.g., private, public, protected) based on your desired accessibility and encapsulation.