MidiScope/Application/src/main/java/com/example/android/common/midi/MidiInputPortSelector.java [34:90]:
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public class MidiInputPortSelector extends MidiPortSelector {

    private MidiInputPort mInputPort;
    private MidiDevice mOpenDevice;

    /**
     * @param midiManager
     * @param activity
     * @param spinnerId ID from the layout resource
     */
    public MidiInputPortSelector(MidiManager midiManager, Activity activity,
            int spinnerId) {
        super(midiManager, activity, spinnerId, MidiDeviceInfo.PortInfo.TYPE_INPUT);
    }

    @Override
    public void onPortSelected(final MidiPortWrapper wrapper) {
        close();
        final MidiDeviceInfo info = wrapper.getDeviceInfo();
        if (info != null) {
            mMidiManager.openDevice(info, new MidiManager.OnDeviceOpenedListener() {
                    @Override
                public void onDeviceOpened(MidiDevice device) {
                    if (device == null) {
                        Log.e(MidiConstants.TAG, "could not open " + info);
                    } else {
                        mOpenDevice = device;
                        mInputPort = mOpenDevice.openInputPort(
                                wrapper.getPortIndex());
                        if (mInputPort == null) {
                            Log.e(MidiConstants.TAG, "could not open input port on " + info);
                        }
                    }
                }
            }, null);
            // Don't run the callback on the UI thread because openInputPort might take a while.
        }
    }

    public MidiReceiver getReceiver() {
        return mInputPort;
    }

    @Override
    public void onClose() {
        try {
            if (mInputPort != null) {
                Log.i(MidiConstants.TAG, "MidiInputPortSelector.onClose() - close port");
                mInputPort.close();
            }
            mInputPort = null;
            if (mOpenDevice != null) {
                mOpenDevice.close();
            }
            mOpenDevice = null;
        } catch (IOException e) {
            Log.e(MidiConstants.TAG, "cleanup failed", e);
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MidiSynth/Application/src/main/java/com/example/android/common/midi/MidiInputPortSelector.java [34:90]:
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public class MidiInputPortSelector extends MidiPortSelector {

    private MidiInputPort mInputPort;
    private MidiDevice mOpenDevice;

    /**
     * @param midiManager
     * @param activity
     * @param spinnerId ID from the layout resource
     */
    public MidiInputPortSelector(MidiManager midiManager, Activity activity,
            int spinnerId) {
        super(midiManager, activity, spinnerId, MidiDeviceInfo.PortInfo.TYPE_INPUT);
    }

    @Override
    public void onPortSelected(final MidiPortWrapper wrapper) {
        close();
        final MidiDeviceInfo info = wrapper.getDeviceInfo();
        if (info != null) {
            mMidiManager.openDevice(info, new MidiManager.OnDeviceOpenedListener() {
                    @Override
                public void onDeviceOpened(MidiDevice device) {
                    if (device == null) {
                        Log.e(MidiConstants.TAG, "could not open " + info);
                    } else {
                        mOpenDevice = device;
                        mInputPort = mOpenDevice.openInputPort(
                                wrapper.getPortIndex());
                        if (mInputPort == null) {
                            Log.e(MidiConstants.TAG, "could not open input port on " + info);
                        }
                    }
                }
            }, null);
            // Don't run the callback on the UI thread because openInputPort might take a while.
        }
    }

    public MidiReceiver getReceiver() {
        return mInputPort;
    }

    @Override
    public void onClose() {
        try {
            if (mInputPort != null) {
                Log.i(MidiConstants.TAG, "MidiInputPortSelector.onClose() - close port");
                mInputPort.close();
            }
            mInputPort = null;
            if (mOpenDevice != null) {
                mOpenDevice.close();
            }
            mOpenDevice = null;
        } catch (IOException e) {
            Log.e(MidiConstants.TAG, "cleanup failed", e);
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