在我的片段中,我有带有导航按钮的物料搜索栏(humbugger)。 如何调用片段中具有该humbugger按钮的主要活动中的导航抽屉 不了解如何在DictionaryFragment中处理它
MainActivity:
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
LinearLayout content = (LinearLayout) findViewById(R.id.content);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this,
drawer,
R.string.nav_open_drawer,
R.string.nav_close_drawer){
};
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
DictionaryFragment:
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
materialSearchBar = (MaterialSearchBar) RootView.findViewById(R.id.search_bar);
...
materialSearchBar.setOnSearchActionListener(new MaterialSearchBar.OnSearchActionListener() {
@Override
public void onButtonClicked(int buttonCode) {
//***HOW TO HANDLE IT HERE?***
//switch (buttonCode) {
// case MaterialSearchBar.BUTTON_NAVIGATION:
// drawer.openDrawer(Gravity.START);
// break;}
}
});
//return RootView;
}
布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:background="@color/searchBarDividerColor"
tools:context="com.hfad.catchat.DictionaryFragment">
<com.mancj.materialsearchbar.MaterialSearchBar
android:id="@+id/search_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="8dp"
app:mt_hint="Search"
app:mt_navIconEnabled="true"
app:mt_speechMode="false" />
<android.support.v7.widget.RecyclerView
android:id="@+id/recycler_search"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layoutManager="android.support.v7.widget.LinearLayoutManager"
app:layout_behavior="@string/appbar_scrolling_view_behavior" >
</android.support.v7.widget.RecyclerView>
</LinearLayout>
答案 0 :(得分:1)
这是您可以尝试在片段中切换导航抽屉的位置的尝试,通过这种方式,您将必须在活动中编写一个方法来执行片段中您想做的事情,请确保它是一个公共方法:
((MainActivity)getContext()).toggleDrawer();
在您的MainActivity中:
public void toggleDrawer(){
//do your stuff
}
另一种方法是回调aka接口(首选接口),将其作为片段构造函数中的参数传递,并在要更改抽屉状态的位置使用它。就像在您的活动中一样:
Callback callback = new Callback(){
@Override
public void onDrawerStateChanged(){
//do your stuff
}};
new DictionaryFragment(callback);
在片段中,您将必须编写一个构造函数以接受该回调并保存在本地变量中:
public DictionaryFragment() {
}
@SuppressLint("ValidFragment")
public DictionaryFragment(Callback callback) {
this.callback = callback;
}
并像这样使用它:
callback.onDrawerStateChanged();
您还可以通过两种方式将参数传递给MainActivity。