DialogFragment

java code

public class DialogFragment_DocumentView extends DialogFragment {

    public static DialogFragment newInstace() {
        DialogFragment dialogFragment = new DialogFragment_DocumentView();
        return dialogFragment;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        builder.setTitle("View Document");
        builder.setView(getContentView());


        Dialog dialog = builder.create();
        return dialog;
    }

    private View getContentView() {
        LayoutInflater inflater = getActivity().getLayoutInflater();
        View view=inflater.inflate(R.layout.dialog_documentview, null);
        ImageView img_download = (ImageView) view.findViewById(R.id.doucment_listitem_img_download);
        img_download.setImageBitmap(ConstantValues.bitmapDocument);

        return view;
    }
}

XML File

<LinearLayout 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"
    android:orientation="vertical"
    android:padding="@dimen/login_main_padding"
    tools:context=".SHSact_Login">
    <ImageView
        android:id="@+id/doucment_listitem_img_download"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
         />
</LinearLayout>

CALLING

DialogFragment_DocumentView.newInstace().show(shSact_main.getFragmentManager(), "Document View");