Android Open Source - haavi Playback Control Fragment

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License

The source code is released under:
MIT License
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Java Source Code

package com.ilkkalaukkanen.haavi;
/*from   w  w  w . j  a  v  a 2 s . co  m*/
import android.app.Activity;
import android.app.Fragment;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageButton;


/**
 * A simple {@link android.support.v4.app.Fragment} subclass. Activities that contain this fragment must implement the
 * {@link com.ilkkalaukkanen.haavi.PlaybackControlFragment.PlaybackControlListener} interface to handle interaction
 * events. Use the {@link PlaybackControlFragment#newInstance} factory method to create an instance of this fragment.
 */
public class PlaybackControlFragment extends Fragment {
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PLAYING = "playing";

    private boolean playing;

    private ImageButton togglePlaybackButton;
    private ImageButton skipForwardButton;
    private ImageButton skipBackwardButton;

    // empty implementation
    private PlaybackControlListener listener = new PlaybackControlListener() {
        @Override
        public void onSkipBackward() {
        }

        @Override
        public void onSkipForward() {
        }

        @Override
        public void onTogglePlayback() {
        }
    };

    private ToggleStateInterface toggleStateInterface = new ToggleStateInterface() {
        @Override
        public void setPlaying() {
            togglePlaybackButton.setImageResource(R.drawable.ic_action_pause);
        }

        @Override
        public void setPaused() {
            togglePlaybackButton.setImageResource(R.drawable.ic_action_play);
        }
    };

    public ToggleStateInterface getToggleStateInterface() {
        return toggleStateInterface;
    }

    public PlaybackControlFragment() {
    }

    /**
     * Use this factory method to create a new instance of this fragment using the provided parameters.
     *
     * @param playing Parameter 1.
     *
     * @return A new instance of fragment PlaybackControlFragment.
     */
    public static PlaybackControlFragment newInstance(boolean playing) {
        PlaybackControlFragment fragment = new PlaybackControlFragment();
        Bundle args = new Bundle();
        args.putBoolean(ARG_PLAYING, playing);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments() != null) {
            playing = getArguments().getBoolean(ARG_PLAYING);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_playback_control, container, false);
        assert view != null;
        togglePlaybackButton = (ImageButton) view.findViewById(R.id.controls_toggle_playback);
        if (playing) {
            togglePlaybackButton.setImageResource(R.drawable.ic_action_pause);
        }
        togglePlaybackButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(final View v) {
                onTogglePlaybackButtonPressed();
            }
        });
        skipForwardButton = (ImageButton) view.findViewById(R.id.controls_skip_forward);
        skipForwardButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(final View v) {
                onSkipForwardButtonPressed();
            }
        });
        skipBackwardButton = (ImageButton) view.findViewById(R.id.controls_skip_backward);
        skipBackwardButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(final View v) {
                onSkipBackwardButtonPressed();
            }
        });
        return view;
    }

    private void onSkipBackwardButtonPressed() {
        listener.onSkipBackward();
    }

    private void onSkipForwardButtonPressed() {
        listener.onSkipForward();
    }

    public void onTogglePlaybackButtonPressed() {
        listener.onTogglePlayback();
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            listener = (PlaybackControlListener) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException(activity.toString() + " must implement PlaybackControlListener");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        listener = null;
    }

    /**
     * This interface must be implemented by activities that contain this fragment to allow an interaction in this
     * fragment to be communicated to the activity and potentially other fragments contained in that activity.
     * <p/>
     * See the Android Training lesson <a href= "http://developer.android.com/training/basics/fragments/communicating.html"
     * >Communicating with Other Fragments</a> for more information.
     */
    public interface PlaybackControlListener {
        public void onSkipBackward();

        public void onSkipForward();

        public void onTogglePlayback();
    }

    public interface ToggleStateInterface {
        public void setPlaying();

        public void setPaused();
    }
}
Java Source Code List
