Android 4.3:不聚焦 searchView 不显示提示 [英] Android 4.3: Not focus searchView not show hint

问题描述

Android Studio 2.3.3、Android 4.3.

在我的片段中，我有 searchView 组件(不在工具栏中).这是我的片段.

fragment_layout.xml:

<android.support.v7.widget.SearchViewandroid:id="@+id/searchView"android:layout_width="match_parent"android:layout_height="30dp"android:layout_marginEnd="20dp"android:layout_marginLeft="20dp"android:layout_marginRight="20dp"android:layout_marginStart="20dp"android:background="@drawable/search_view_bg"app:defaultQueryHint="@string/settings"app:searchHintIcon="@null"/></LinearLayout>

在我的片段中:

 private void init(View view) {searchView = view.findViewById(R.id.searchView);SearchManager searchManager = (SearchManager) getActivity().getSystemService(Context.SEARCH_SERVICE);searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()));searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()));searchView.setSuggestionsAdapter(new SearchCatalogSuggestionsAdapter(getActivity()));ViewCompat.setLayoutDirection(view.findViewById(R.id.searchView), ViewCompat.LAYOUT_DIRECTION_RTL);}

这里是 searchView 获得焦点时的结果:

这里是 searchView 没有焦点时的结果:

如您所见，提示仅在 searchView 处于焦点上时显示.但我还需要在 searchView 不在焦点时显示提示.我希望提示始终可见.

附言如果使用方法 searchView.setIconified(false) 然后 searchView 自动获得焦点.但我只需要在用户点击 searchView 时获得焦点.

解决方案

我找到了适用于 Android 4.3+ 的解决方案:

1. 我使用麦克风图标，禁用点击它并用自定义图标(玻璃)替换

2. 300 毫秒后隐藏键盘(因为 onActionViewExpanded() 显示软键盘)

结果我有:

1. 当 searchView 不是焦点时显示提示
2. 当 searchView 处于焦点且 searchView 未处于焦点时，在右侧显示图标

这是我的片段:

Java 代码:

 ImageView voiceButtonIcon = view.findViewById(android.support.v7.appcompat.R.id.search_voice_btn);voiceButtonIcon.setImageResource(R.drawable.ic_search_black);voiceButtonIcon.setEnabled(false);//解决方法！当 searchView 没有焦点时显示提示searchView.onActionViewExpanded();new Handler().postDelayed(new Runnable() {@覆盖公共无效运行(){searchView.clearFocus();}}, 300);

布局xml:

 和 searchView 具有焦点:
所以提示总是显示！
Android Studio 2.3.3, Android 4.3.

In my fragment I has searchView component (not in ToolBar). Here my snippet.

fragment_layout.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.SearchView
        android:id="@+id/searchView"
        android:layout_width="match_parent"
        android:layout_height="30dp"
        android:layout_marginEnd="20dp"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:layout_marginStart="20dp"
        android:background="@drawable/search_view_bg"
        app:defaultQueryHint="@string/settings"
        app:searchHintIcon="@null" />   

</LinearLayout>
In my fragment:
  private void init(View view) {
        searchView = view.findViewById(R.id.searchView);
        SearchManager searchManager = (SearchManager) getActivity().getSystemService(Context.SEARCH_SERVICE);
        searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()));
searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()));
        searchView.setSuggestionsAdapter(new SearchCatalogSuggestionsAdapter(getActivity()));
        ViewCompat.setLayoutDirection(view.findViewById(R.id.searchView), ViewCompat.LAYOUT_DIRECTION_RTL);

    }
Here result when searchView has focus:



And here result when searchView has no focus:


As you can see the hint show only when searchView is on focus.
But I need also to show hint when searchView is not in focus. I want hint to be always visible.

P.S. If use method searchView.setIconified(false) then searchView auto get focus. But I need to get focus only when user click on searchView.
解决方案
I found solution for Android 4.3+:

I use microphone icon , disable click on it and replace it by custom icon(glass)
Hide keyboard after 300 msec (because onActionViewExpanded() show soft keyboard)
As result I has:

Show hint when searchView is not focus
Show icon on the right side when searchView is on focus and when searchView is NOT in focus
Here my snippet:

Java code:
 ImageView voiceButtonIcon = view.findViewById(android.support.v7.appcompat.R.id.search_voice_btn);
        voiceButtonIcon.setImageResource(R.drawable.ic_search_black);
        voiceButtonIcon.setEnabled(false);

        // Workaround! Show hint when searchView has no focus
        searchView.onActionViewExpanded();
        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                searchView.clearFocus();
            }
        }, 300);
layout xml:
<android.support.v7.widget.SearchView
        android:id="@+id/searchView"
        android:layout_width="0dp"
        android:layout_height="48dp"
        android:layout_marginEnd="20dp"
        android:layout_marginLeft="20dp"
        android:layout_marginRight="20dp"
        android:layout_marginStart="20dp"
        android:background="@drawable/search_view_bg"
        android:theme="@style/SearchViewTheme"
        app:defaultQueryHint="@string/settings"
        app:searchHintIcon="@null" />
As result:
searchView has NO focus:



and searchView HAS in focus:



So hint show always!

                        
这篇关于Android 4.3:不聚焦 searchView 不显示提示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！