BottomSheetDialog is one of the important aspect of material design in Android which comes with support library. This is really an alternative to a normal Dialog in your Android app, which pops up from the bottom with animation. Implementation of this dialog is not as straight forward as AlertDialog. So let’s have a look on the implementation –

BottomSheetDialog Source Code

Java class is similar to the below code –

public class SampleBottomSheetDialog extends AppCompatDialogFragment {

    public static SampleBottomSheetDialog newInstance() {
        SampleBottomSheetDialog dialog = new SampleBottomSheetDialog();
        return dialog;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {

        final Activity activity = getActivity();

        View promptsView = LayoutInflater.from(activity).inflate(R.layout.sample_bottom_sheet_dialog, null, false);
        final BottomSheetDialog dialog = new BottomSheetDialog(activity, getTheme());
        dialog.setContentView(promptsView);

        TextView submit = (TextView) promptsView.findViewById(R.id.submit);

        submit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (!activity.isFinishing()) {
                    dialog.dismiss();
                }
            }
        });
        return dialog;
    }
}

The above is code is referring sample_bottom_sheet_dialog.xml layout, it is a plain normal layout i.e.,

Now once you are done with these, you are all set to call this dialog. To display the Samplebottomsheetdialog you have to call the show method –

SampleBottomSheetDialog bottomSheetDialog = SampleBottomSheetDialog.newInstance();
        bottomSheetDialog.show(getFragmentManager(), "SAMPLE_TAG");

As it is a form of DialogFragment you have to call this dialog from an AppCompatActivity / FragmentActivity or from a Fragment inside your app, and your app need to be visible. If you are still interested to learn more about this dialog check out this android developers page

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Happy coding!!!

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