代码修改

app/src/main/java/com/electric/chargingpile/activity/ChatContentListActivity.java

    public class ChatContentAdapter extends FragmentStatePagerAdapter {
        public Map<String, ChatContentFragment> map = new HashMap<>();
        private FragmentManager fm;
        private Handler handler;
        public ChatContentAdapter(FragmentManager fm, Handler handler) {
            super(fm);
            this.fm = fm;
            this.handler = handler;
        }
        @Override
        public android.support.v4.app.Fragment getItem(int i) {
            ChatContentFragment fragment = ChatContentFragment.newInstance(i, from);
            fragment.fm = fm;
            fragment.handler = handler;
            map.put(i + "", fragment);
            return fragment;
    public static class ChatContentFragment extends Fragment implements View.OnClickListener {
        private FragmentManager fm;
        private Handler handler;
        private static final String ARG_INDEX = "index";
        private static final String ARG_FROM = "from";

app/src/main/java/com/electric/chargingpile/fragment/ChatContentCommentListDialogFragment.java

    @NonNull
    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        Dialog dialog = new Dialog(getActivity(), R.style.BottomDialog);
        Dialog dialog = new Dialog(getActivity(), R.style.CommentDialog);
        // 外部点击设置为可取消
        dialog.setCancelable(true);
        dialog.setCanceledOnTouchOutside(true);

app/src/main/res/layout/fragment_chat_content_comment_list.xml

    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="#ff00ff"
    tools:background="#68b8be">
    <android.support.constraint.ConstraintLayout

app/src/main/res/values/styles.xml

        <item name="android:windowSoftInputMode">stateAlwaysVisible</item><!--显示软件盘-->
    </style>
    <style name="CommentDialog" parent="@style/AppTheme">
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">wrap_content</item>
        <item name="android:windowIsFloating">true</item>
    </style>
    <style name="actionBarTheme" parent="ThemeOverlay.AppCompat.Dark.ActionBar">
        <item name="android:textColorPrimary">@android:color/primary_text_light</item>
    </style>