CODEWITHSUNDEEP
javaandroidandroid-fragmentsfragment
Techno Max
Techno Max

Reputation: 3

Starting a Activity in a Fragment with several Buttons

I am still relatively new in programming with Java and I would like to open a fragment with several buttons different activities. However, I always get an error (... is already defined in ...) at the following location: 

public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState)

Also in other variants it did not work and there were even more errors.

Here is the full code of my Fragment:

public DashboardFragment() {

}


@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment

    View rootView = inflater.inflate(R.layout.fragment_dashboard, container, false);

    ImageButton button = (ImageButton) rootView.findViewById(R.id.stundenplanbtn);
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(getActivity(), Stundenplan.class);
            startActivity(intent);


        }
    });

    return rootView;
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment

    View rootView = inflater.inflate(R.layout.fragment_dashboard, container, false);

    ImageButton button2 = (ImageButton) rootView.findViewById(R.id.vertretungsbtn);
    button2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(getActivity(), Vertretungsplan.class);
            startActivity(intent);


        }
    });

    return rootView;
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment

    View rootView = inflater.inflate(R.layout.fragment_dashboard, container, false);

    ImageButton button2 = (ImageButton) rootView.findViewById(R.id.essenbtn);
    button2.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(getActivity(), Essen.class);
            startActivity(intent);


        }
    });

    return rootView;
}
}

Upvotes: 0

Views: 41

Answers (1)

Joaquim Ley
Joaquim Ley

Reputation: 4127

What you actually want is this:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment

    View rootView = inflater.inflate(R.layout.fragment_dashboard, container, false);

    ImageButton button = (ImageButton) rootView.findViewById(R.id.stundenplanbtn);
    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(getActivity(), Stundenplan.class);
            startActivity(intent);


        }
    });

    ImageButton button2 = (ImageButton) rootView.findViewById(R.id.vertretungsbtn);
        button2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(getActivity(), Vertretungsplan.class);
                startActivity(intent);


            }
        });

    return rootView;

}

Also, in the Android specific context you don't really all the ImageButton casting etc. since you're not using any specific method of the ImageButton class and since it extends the View class you can simply use:

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment

    View rootView = inflater.inflate(R.layout.fragment_dashboard, container, false);


    rootView.findViewById(R.id.stundenplanbtn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(getActivity(), Stundenplan.class);
                startActivity(intent);


            }
        });

    rootView.findViewById(R.id.vertretungsbtn).setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View view) {
                    Intent intent = new Intent(getActivity(), Vertretungsplan.class);
                    startActivity(intent);


                }
            });

 return rootView;

}

Note the only thing here is not creating the buttonvariables/references, so it's just a small improvement. But if this is confusing you at the moment just ignore and use the first one.

Upvotes: 3

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