Android 动态设置搜索提示
有人知道如何动态设置android搜索对话框提示吗? I don’我没有试着做像这样的事情:Android 动态设置搜索提示,android,android-searchmanager,Android,Android Searchmanager,有人知道如何动态设置android搜索对话框提示吗? I don’我没有试着做像这样的事情: <?xml version="1.0" encoding="utf-8"?> <searchable xmlns:android="http://schemas.android.com/apk/res/android" android:label="@string/search_label" android:hint="@string/search_hint" android:i
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:label="@string/search_label"
android:hint="@string/search_hint"
android:id="@+id/search_dialog_text">
</searchable>
但文本等于空
所以期待你的建议。谢谢。这感觉很粗糙,但对我来说很有用-不是真正的动态,但可以在我需要的两个搜索提示之间交替使用:
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data android:name="android.app.searchable"
android:resource="@xml/searchable"/>
</activity>
<activity android:name=".DummyActivity">
<intent-filter>
<action android:name="android.intent.action.VIEW" />
<action android:name="android.intent.action.SEARCH" />
</intent-filter>
<meta-data android:name="android.app.searchable"
android:resource="@xml/searchable2"/>
</activity>
公共布尔值onSearchRequested()
{
SearchManager SearchManager=(SearchManager)getSystemService(Context.SEARCH_SERVICE);
if(searchManager!=null)
{
//使用适当的可搜索活动开始搜索
//因此,我们在搜索对话框中获得了正确的搜索提示
如果(/*您的情况在此*/)
startSearch(null,false,新组件名(this,MainActivity.class),null,false);
其他的
startSearch(null,false,新组件名(this,DummyActivity.class),null,false)
返回true;
}
返回false;
}
好的,从Android源代码来看,这个类只用于查找元数据,但是如果有人知道不同的情况,请告诉我。看起来你就快到了
SearchDialog
source执行此操作以获得自动完成的可编辑文件
mSearchAutoComplete = (SearchAutoComplete) findViewById(com.android.internal.R.id.search_src_text);
(注意,SearchAutoComplete
类是AutoCompleteTextView
的一个子类)他们在声明中添加了一个注释
注意:系统使用此文件实例化SearchableInfo对象,但您不能在运行时自己创建此对象,您必须用XML声明可搜索配置
因此,您的问题的答案似乎是您无法动态设置搜索对话框提示。我使用OnActionExpandListener和自定义actionView通过ABS实现了这一点,例如:
menu.add("Search")
.setActionView(R.layout.collapsible_edittext)
.setOnActionExpandListener(new MenuItem.OnActionExpandListener()
{
@Override
public boolean onMenuItemActionExpand(MenuItem item) {
((EditText) item.getActionView()).setHint("Your custom text here");
return true;
}
@Override
public boolean onMenuItemActionCollapse(MenuItem item) {
return true;
}
});
使用可折叠的_edittext.xml:
<EditText
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:textColor="@color/search_fg"
android:background="@drawable/textfield_default_holo_light"
android:hint="[will be replaced at runtime]"/>
感谢村上春树先生的想法,我已经实现了相同的概念来执行切换搜索,根据我的观点,这不是一种黑客行为,而是OOPs的美妙之处。下面的程序在操作栏中有一个切换图标,用于在搜索提示之间切换
public class RestaurantListingActivity extends BaseMainActivity implements
TabListener {
private boolean isRestaurantSearch = true;
private SearchManager searchManager;
private SearchView searchView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActionBar aBar = getActionBar();
aBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
aBar.addTab(aBar.newTab().setText("Place Order").setTabListener(this));
aBar.addTab(aBar.newTab().setText("My Account").setTabListener(this));
aBar.addTab(aBar.newTab().setText("Favorite").setTabListener(this));
aBar.addTab(aBar.newTab().setText("Vendor Portal").setTabListener(this));
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.restaturant_listing_menu, menu);
searchManager = (SearchManager) getSystemService(SEARCH_SERVICE);
searchView = (SearchView) menu.findItem(R.id.rlm_search)
.getActionView();
searchView.setSearchableInfo(searchManager
.getSearchableInfo(new ComponentName(this,
RestaurantListingActivity.class)));
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.rlm_toggle:
isRestaurantSearch = !isRestaurantSearch;
if (isRestaurantSearch)
searchView.setSearchableInfo(searchManager
.getSearchableInfo(new ComponentName(this,
RestaurantListingActivity.class)));
else
searchView.setSearchableInfo(searchManager
.getSearchableInfo(new ComponentName(this,
RestaurantFoodSwitcherActivity.class)));
break;
case R.id.rlm_change_loc:
break;
case R.id.rlm_filter_search:
break;
}
return super.onOptionsItemSelected(item);
}
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
// TODO Auto-generated method stub
}
@Override
public void setScreenData(Object screenData, int event, long time) {
// TODO Auto-generated method stub
}
@Override
public Activity getMyActivityReference() {
// TODO Auto-generated method stub
return null;
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
}
public class RestaurantFoodSwitcherActivity extends RestaurantListingActivity {
}
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:hint="@string/search_hint_food"
android:label="@string/app_name">
</searchable>
<activity android:name="com.example.app.ui.activity.RestaurantListingActivity" >
<!-- This intent-filter identifies this activity as "searchable" -->
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<!-- This metadata entry provides further configuration details for searches -->
<!-- that are handled by this activity. -->
<meta-data
android:name="android.app.searchable"
android:resource="@xml/searchablerestra"
/>
</activity>
<activity android:name="com.example.app.ui.activity.RestaurantFoodSwitcherActivity">
<!-- This intent-filter identifies this activity as "searchable" -->
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<!-- This metadata entry provides further configuration details for searches -->
<!-- that are handled by this activity. -->
<meta-data
android:name="android.app.searchable"
android:resource="@xml/searchablefood"
/>
</activity>
有一个比上述任何一个更简单的答案。它为您的活动加载默认的searchable.xml,然后使用java反射更新SearchableInfo实例中的私有mhintd字段:
@Override
public void onPrepareOptionsMenu(Menu menu) {
SearchManager searchManager = (SearchManager)getActivity().getSystemService(Context.SEARCH_SERVICE);
SearchableInfo si = searchManager.getSearchableInfo( getActivity().getComponentName() );
try {
Field mHintId = si.getClass().getDeclaredField("mHintId");
mHintId.setAccessible(true);
mHintId.setInt(si, R.string.your_custom_hint);
} catch (Exception e) {
}
MenuItem mi = menu.findItem(R.id.menu_search);
SearchView searchView = (SearchView)mi.getActionView();
searchView.setSearchableInfo( si );
}
如果您正在使用
工具栏
和搜索视图
小部件,可以通过调用以下命令轻松设置搜索查询提示:
SearchView.setQueryHint(CharSequence hint)
非常有趣的黑客。混乱,但似乎有效。你能想出一种方法让这种情况动态发生吗?i、 e.在运行时更新搜索提示?e、 g.设置一个提示字符串的格式,其中包含正在搜索的项目数量的实时计数。上述方法是最好、最简单的方法。忘掉所有其他复杂的建议吧@zyamys从哪个类和哪个方法调用invalidateLayout(),以便调用这个onPrepareOptions函数()重写?谢谢它由框架调用,您不需要调用活动。invalidateOptionsMenu(),除非出于某些无关的原因需要。
<?xml version="1.0" encoding="utf-8"?>
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
android:hint="@string/search_hint_food"
android:label="@string/app_name">
</searchable>
<activity android:name="com.example.app.ui.activity.RestaurantListingActivity" >
<!-- This intent-filter identifies this activity as "searchable" -->
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<!-- This metadata entry provides further configuration details for searches -->
<!-- that are handled by this activity. -->
<meta-data
android:name="android.app.searchable"
android:resource="@xml/searchablerestra"
/>
</activity>
<activity android:name="com.example.app.ui.activity.RestaurantFoodSwitcherActivity">
<!-- This intent-filter identifies this activity as "searchable" -->
<intent-filter>
<action android:name="android.intent.action.SEARCH" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<!-- This metadata entry provides further configuration details for searches -->
<!-- that are handled by this activity. -->
<meta-data
android:name="android.app.searchable"
android:resource="@xml/searchablefood"
/>
</activity>
@Override
public void onPrepareOptionsMenu(Menu menu) {
SearchManager searchManager = (SearchManager)getActivity().getSystemService(Context.SEARCH_SERVICE);
SearchableInfo si = searchManager.getSearchableInfo( getActivity().getComponentName() );
try {
Field mHintId = si.getClass().getDeclaredField("mHintId");
mHintId.setAccessible(true);
mHintId.setInt(si, R.string.your_custom_hint);
} catch (Exception e) {
}
MenuItem mi = menu.findItem(R.id.menu_search);
SearchView searchView = (SearchView)mi.getActionView();
searchView.setSearchableInfo( si );
}
SearchView.setQueryHint(CharSequence hint)