Android Working with TimePicker

fragment_custom_time_picker_dialog.xml

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="iterator.ir.a017.CustomTimePickerDialogFragment">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <TimePicker
            android:id="@+id/timePickerMain"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:timePickerMode="spinner">
        </TimePicker>

        <Button
            android:id="@+id/buttonDone"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="@string/done"/>

    </LinearLayout>

</FrameLayout>

CustomTimePickerDialogFragment.java

public class CustomTimePickerDialogFragment extends DialogFragment {

    private OnCustomTimePickerClickListener mListener;
    Button buttonDone;
    TimePicker timePickerMain;

    public CustomTimePickerDialogFragment() {

    }


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

        View view=inflater.inflate(R.layout.fragment_custom_time_picker_dialog, null);

        buttonDone= (Button) view.findViewById(R.id.buttonDone);
        timePickerMain= (TimePicker) view.findViewById(R.id.timePickerMain);

        buttonDone.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (mListener != null) {
                    mListener.onCustomTimePickerClick(timePickerMain);
                }

                dismiss();
            }
        });

        return view;
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        if (context instanceof OnCustomTimePickerClickListener) {
            mListener = (OnCustomTimePickerClickListener) context;
        } else {
            throw new RuntimeException(context.toString()
                    + " must implement OnCustomTimePickerClickListener");
        }
    }

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

    public interface OnCustomTimePickerClickListener {
        void onCustomTimePickerClick(View view);
    }
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="iterator.ir.a017.MainActivity">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="25dp"
        android:id="@+id/buttonShow"
        android:text="@string/show" />
</RelativeLayout>

MainActivity.java

public class MainActivity extends AppCompatActivity implements CustomTimePickerDialogFragment.OnCustomTimePickerClickListener {

    Button buttonShow;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        buttonShow= (Button) findViewById(R.id.buttonShow);

        buttonShow.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                CustomTimePickerDialogFragment customTimePickerDialogFragment=new CustomTimePickerDialogFragment();
                customTimePickerDialogFragment.show(getSupportFragmentManager(),"customDialog1");
            }
        });
    }

    @Override
    public void onCustomTimePickerClick(View view) {
        TimePicker timePickerMain= (TimePicker) view;

        String time=String.format("%s:%s",timePickerMain.getCurrentHour(),timePickerMain.getCurrentMinute());
        Toast.makeText(getBaseContext(),time,Toast.LENGTH_LONG).show();
    }
}

References

https://github.com/mhdr/AndroidSamples/tree/master/017