[Android搜索小部件]默认情况下如何隐藏搜索视图中的关闭按钮？

Question

我已经实现了机器人SearchView在ActionBar.当SearchView获得焦点,关闭按钮[X]在合适的显示出来.我看了一下其他Android原生应用,比如联系人和Gmail.SearchView增益聚焦时不显示关闭按钮.

如何设置我的SearchView表现？

Answer 1

设置searchView.setIconifiedByDefault(false)将禁用折叠搜索视图,并删除关闭按钮.

Answer 2

我遇到了同样的问题android.support.v7.widget.SearchView并找到了解决方案.首先,onCreateOptionsMenu您可以获取对SearchView及其关闭按钮的引用:

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    super.onCreateOptionsMenu(menu, inflater);
    inflater.inflate(R.menu.search, menu);

    MenuItem searchItem = menu.findItem(R.id.action_search);
    mSearchView = (SearchView) MenuItemCompat.getActionView(searchItem);

    try {
        Field searchField = SearchView.class.getDeclaredField("mCloseButton");
        searchField.setAccessible(true);
        mSearchCloseButton = (ImageView) searchField.get(mSearchView);
    } catch (Exception e) {
        Log.e(TAG, "Error finding close button", e);
    }
}

现在您可以尝试修改按钮.首先,我尝试使用setVisibility(View.GONE)隐藏关闭按钮,但这不起作用,因为当用户与SearchView交互时,SearchView会重置其关闭按钮的可见性.所以我的解决方案是使用透明drawable并禁用单击关闭按钮:

if (mSearchCloseButton != null) {
    mSearchCloseButton.setEnabled(false);
    mSearchCloseButton.setImageDrawable(getResources().getDrawable(R.drawable.transparent));
}

这篇文章也帮助了我:http:
//novoda.com/blog/styling-actionbar-searchview

但是,说实话,这非常黑客.这将是清洁剂抓住从搜索查看源https://android.googlesource.com/platform/frameworks/support.git/+/master/v7/appcompat/src/android/support/v7/widget/SearchView.java和创建自己的SearchView版本,用于隐藏/显示关闭按钮.

更新:
Google刚刚发布了AppCompat v21,它对SearchView小部件进行了样式改进:http:
//android-developers.blogspot.com/2014/10/appcompat-v21-material-design-for-pre.html

Answer 3

为未来的访客发布。以前的答案很旧而且不容易。你所要做的就是这样设置nullapp:closeIconapp:closeIcon="@null"

  <androidx.appcompat.widget.SearchView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    app:closeIcon="@null"   <!-- This simple solution -->
    app:iconifiedByDefault="false" />

Answer 4

您也可以使用它来隐藏关闭按钮

ImageView closeBtn = (ImageView) searchView.findViewById(R.id.search_close_btn);
closeBtn.setEnabled(false);
closeBtn.setImageDrawable(null);

Answer 5

您可以从SearchView对象(AppCompat v23.2.1)获取该按钮的链接:

searchView = (SearchView) MenuItemCompat.getActionView(menu.findItem(R.id.action_search));
ImageView mCloseButton = (ImageView) searchView.findViewById(android.support.v7.appcompat.R.id.search_close_btn);

然后,您可以为SearchView文本更改分配侦听器(SearchView也会更改按钮的可见性,但侦听器将在之后执行并将覆盖这些更改):

searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
    @Override
    public boolean onQueryTextSubmit(String query) {
        return false;
    }

    @Override
    public boolean onQueryTextChange(String newText) {
        mCloseButton.setVisibility(newText.isEmpty() ? View.GONE : View.VISIBLE);
        return false;
    }
});

最后,当SearchView从图标化状态展开时,监听器隐藏图标:

searchView.setOnSearchClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        // hide "x" button if there is no text
        String query = searchView.getQuery().toString();
        mCloseButton.setVisibility(query.isEmpty() ? View.GONE : View.VISIBLE);
    }
});