我有一个功能,我需要在 searchView 展开时显示一个菜单项,并在 searchView 关闭时消失。展开时,项目的 setVisible 为false,它会使菜单项在返回到 searchView 的折叠状态时消失,但会留下空白。
截图:
searchView 图标是否可以返回其原始位置?
SearchManager searchManager =(SearchManager)getSystemService(Context.SEARCH_SERVICE);
final MenuItem menuitem=menu.findItem(R.id.action_search);
final MenuItem locationitem=menu.findItem(R.id.action_location).setVisible(false);
SearchView searchView = (SearchView) menuitem.getActionView();
if(null!=searchManager ) {
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
}
searchView.setIconifiedByDefault(true); //if using on actionbar
searchView.setClickable(true);
searchView.setOnSuggestionListener(new SearchView.OnSuggestionListener() {
@Override
public boolean onSuggestionClick(int position) {
// Your code here
return true;
}
@Override
public boolean onSuggestionSelect(int position) {
// Your code here
return true;
}
});
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String s) {
return false;
}
@Override
public boolean onQueryTextChange(String s) {
populateAdapter(s);
return false;
}
});
searchView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
@Override
public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {
SearchView searchView = (SearchView) v;
if (searchView.isIconified()) {
locationitem.setVisible(false);
Log.d("Trial","Working!!");
fr=new Fragment_Two();
FragmentManager fm=getFragmentManager();
FragmentTransaction ft=fm.beginTransaction();
ft.replace(R.id.fragmentswitcher,fr);
ft.commit();
}
else{
locationitem.setVisible(true);
Log.d("Trial","Working too!!");
MenuItemCompat.setShowAsAction(menuitem, MenuItemCompat.SHOW_AS_ACTION_ALWAYS);
MenuItemCompat.setShowAsAction(locationitem, MenuItemCompat.SHOW_AS_ACTION_ALWAYS);
fr=new Fragment_One();
FragmentManager fm=getFragmentManager();
FragmentTransaction ft=fm.beginTransaction();
ft.replace(R.id.fragmentswitcher,fr);
ft.commit();
View newView=fr.getView();
}
}
});
答案 0 :(得分:0)
不幸的是,使用setVisible()
将隐藏菜单项,但是菜单项仍会占用空间。您也不能强制转换为View
对象并使用setVisibility()
而不会崩溃。我找不到为什么的文档,但是我确信它是故意设计的。
要获得有时不出现菜单项的结果,您需要使用onPrepareOptionsMenu()
。在此函数中,根据您喜欢的逻辑隐藏不想显示的菜单项,并在每次重绘菜单时使用方法invalidateOptionsMenu()
。参见示例:
public void someFunction() {
invalidateOptionsMenu();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
if (itemRemovalNeeded) {
menu.removeItem(R.id.myItem);
}
return true;
}