我正在尝试使用 RecyclerView 的项目列表,一切正常但最后一项没有显示!列表的长度为 2 ,onBindView
称为两次,当我使用Log打印项目时,它打印最后一项。所以列表很好,但RecyclerView没有显示它。
这是我的代码RecyclerView Adapter:
public class ModuleList extends RecyclerView.Adapter<ModuleList.ViewHolder> {
private List<Module> moduleList;
public ModuleList(List<Module> moduleList){
this.moduleList = moduleList;
}
public ModuleList(){
this.moduleList = new ArrayList<>();
}
public List<Module> getModuleList() {
return moduleList;
}
public void setModuleList(List<Module> moduleList) {
this.moduleList = moduleList;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.list_modules,parent,false);
return new ViewHolder(view);
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
Module module = moduleList.get(position);
// function is called twice and the all items are logged works fine
Log.d("ALL",module.getModuleName());
Log.d("ALL", String.valueOf(module.getNumberOfLevels()));
holder.moduleName.setText(String.valueOf(module.getModuleName()));
holder.numberOfLevels.setText(String.valueOf(module.getNumberOfLevels()));
}
@Override
public int getItemCount() {
//size is 2
return moduleList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
public TextView moduleName;
public TextView numberOfLevels;
public ViewHolder(View itemView) {
super(itemView);
moduleName = (TextView) itemView.findViewById(R.id.list_module_name);
numberOfLevels = (TextView) itemView.findViewById(R.id.list_no_of_levels);
}
}
}
这是我的xml,其中的是recyclerview:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/all_modules_list"
android:scrollbars="vertical"
/>
</LinearLayout>
这是我的xml,其中显示了RecyclerView Fragment:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/main_screen"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:fitsSystemWindows="true"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/main_screen_container"
android:orientation="vertical"
>
<android.support.v7.widget.Toolbar
android:id="@+id/main_screen_toolbar"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:minHeight="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
/>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/fragment_container">
</FrameLayout>
</LinearLayout>
<ListView
android:layout_width="240dp"
android:layout_height="match_parent"
android:id="@+id/navigation_items"
android:layout_gravity="start"
android:background="@android:color/white"
>
</ListView>
</android.support.v4.widget.DrawerLayout>
编辑:的 list_module.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/list_module_name"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/list_no_of_levels"
/>
</LinearLayout>
答案 0 :(得分:0)
嘿,你能尝试下面的解决方案吗?
在 list_module.xml
中更改此设置<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/list_module_name"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<TextView
android:id="@+id/list_no_of_levels"
android:layout_width="match_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
我已将match_parent
替换为wrap_content
为父版式。