工具栏在操作模式下不会消失 [英] Toolbar won't disappear in action mode

问题描述

我正在尝试实现以下功能:长时间单击列表项时，将启动操作模式，并且可以删除一个或多个项目.
我从DocumentsActivity开始搜索，该搜索使用ListView及其项开始一个片段DocumentsFragment. ListAdapter通过Fragment的onCreate中的方法调用setListAdapter(this.documentsAdapter)进行初始化和设置.我在片段的onActivityCreated中的列表视图上设置了各种侦听器:

I am trying to implement the feature that, when I am long clicking a list item, the action mode shall start and it shall be possible to delete one or more items.
I am starting in DocumentsActivity a search, which starts a Fragment DocumentsFragment with a ListView and their items. The ListAdapter is initialized and set via method call setListAdapter(this.documentsAdapter) in onCreate of Fragment. I set various listeners on the listview in the onActivityCreated in the Fragment:

public void onActivityCreated(Bundle savedInstanceState) {

    getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
    getListView().setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
        @Override
        public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
            getListView().setItemChecked(position, true);
            return true; 
    }});
    getListView().setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
        @Override
        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
            menu.clear();
            ((DocumentsActivity)getActivity()).getMenuInflater().inflate(R.menu.documents_context_menu, menu);
            return true;
        }
    });
    super.onActivityCreated(savedInstanceState);
}

长按列表项时，动作模式开始，并且菜单documents_context_menu似乎是动作栏.但是问题是，操作栏出现在工具栏上方，并且工具栏不会消失(参见图片).

When long clicking on a listitem the action mode gets started and the menu documents_context_menu appears to be the action bar. But the problem is, the action bar appears above the toolbar and the toolbar won't disappear (see the picture).

我尝试调用getSupportActionBar().hide()或将其设置为null甚至使用其他样式/主题.一切都没有用.有时蓝色的工具栏是完全白色的，但是仅此而已.

I've tried to call getSupportActionBar().hide() or set it to null or even use another style/theme. It all didn't work. Sometimes the blue toolbar was completely white, but that is all.

我绝对不知道为什么工具栏不会消失.你可以给点建议吗?

I have absolutely no idea why the toolbar won't disappear. May you give some advice?

提前谢谢！

_____更新1 _____

这是styles.xml

This is the styles.xml

<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="android:fitsSystemWindows">true</item>
    <item name="colorAccent">@color/darkblue100</item>
    <item name="android:actionOverflowButtonStyle">@style/ActionButtonOverflow</item>
    <item name="actionOverflowButtonStyle">@style/ActionButtonOverflow</item>
    <item name="android:actionMenuTextColor">@color/black</item>
</style>

这是在活动"中设置操作栏的方式:

And this is how the action bar is set in the Activity:

protected void onCreate(Bundle savedInstanceState) {
    handleIntent(getIntent());
    requestWindowFeature(5);
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_documents);
    Toolbar mToolbar = (Toolbar) findViewById(R.id.tool_bar);
    setSupportActionBar(mToolbar);
    args = getIntent().getExtras();
    if (findViewById(R.id.container_documents) != null && savedInstanceState == null) {
        showDocumentsFragment();
    }
}

推荐答案

实际上，此问题是由不同的原因引起的. 首先，将windowActionBar设置为true，也是属性fitsSystemWindows. 我删除了styles.xml 中的两行.

Actually the issue were caused by different things. First, the windowActionBar was set true, also was the attribute fitsSystemWindows.I deleted both lines in styles.xml.

然后，在活动布局中，我完全看不到属性layout_marginTop="?actionBarSize"，我没有看到.但是该属性必须存在，因此在调用onCreateActionMode和onDestroyActionMode时，我可以在方法onActivityCreated中对其进行处理.

Then there was in the activity layout the attribute layout_marginTop="?actionBarSize" I did not see, following in complete confusion. But this attribute needs to be there so I am handling it in the method onActivityCreated when onCreateActionMode and onDestroyActionMode are called.

那之后，我就自动地遇到了列表视图项消失的问题.我通过在onDestroyActionMode中再次提交片段修复了该问题.

After that all I had the automagically problem that the listview items disappeared. I fixed it by commiting my fragment again in onDestroyActionMode.

public void onActivityCreated(Bundle savedInstanceState) {

    getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE_MODAL);
    getListView().setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {

        @Override
        public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {...}
    });
    getListView().setMultiChoiceModeListener(new AbsListView.MultiChoiceModeListener() {
        LinearLayout ll = ((DocumentsActivity)getActivity()).findViewById(R.id.container_documents);

        @Override
        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
            DrawerLayout.LayoutParams params = (DrawerLayout.LayoutParams) ll.getLayoutParams();
            params.setMargins(0, 0, 0, 0);
            ll.setLayoutParams(params);

            ((DocumentsActivity)getActivity()).getSupportActionBar().hide();
            MenuInflater inflater = mode.getMenuInflater();
            inflater.inflate(R.menu.documents_context_menu, menu);
            return true;
        }

        @Override
        public void onDestroyActionMode(ActionMode mode) {
            DrawerLayout.LayoutParams params = (DrawerLayout.LayoutParams) ll.getLayoutParams();
            params.setMargins(0, R.attr.actionBarSize, 0, 0);
            ll.setLayoutParams(params);
            ((DocumentsActivity)getActivity()).getSupportActionBar().show();

            if (getFragmentManager() != null)
                getFragmentManager()
                .beginTransaction()
                .detach(this)
                .attach(this)
                .commit();
        }
    });

    super.onActivityCreated(savedInstanceState);
}

这篇关于工具栏在操作模式下不会消失的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！