Android,XAMARIN:将一个LinearLayout标题添加到RecyclerView';s顶部(可点击)
我到处找,什么也找不到。 我设法把我的回收视图放得恰到好处,唯一缺少的是一个标题。在我以前的listview中,我只是将第一个元素设计为我的标题。这是一个线性布局,里面有一些文本视图和一些图像作为可点击按钮。至于RecyclerView,我还没能做到。这里有人能帮我吗 以下是我的“回收者”视图中的3个(工作)类:Android,XAMARIN:将一个LinearLayout标题添加到RecyclerView';s顶部(可点击),android,xamarin,android-linearlayout,android-recyclerview,Android,Xamarin,Android Linearlayout,Android Recyclerview,我到处找,什么也找不到。 我设法把我的回收视图放得恰到好处,唯一缺少的是一个标题。在我以前的listview中,我只是将第一个元素设计为我的标题。这是一个线性布局,里面有一些文本视图和一些图像作为可点击按钮。至于RecyclerView,我还没能做到。这里有人能帮我吗 以下是我的“回收者”视图中的3个(工作)类: class RecyclerViewAdapter : RecyclerView.Adapter { private List<DataForProfile> ls
class RecyclerViewAdapter : RecyclerView.Adapter
{
private List<DataForProfile> lstData = new List<DataForProfile>();
private Context ctx;
public RecyclerViewAdapter(List<DataForProfile> lstData, Context ctx)
{
this.lstData = lstData;
this.ctx = ctx;
}
public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
{
RecyclerViewHolder viewHolder = holder as RecyclerViewHolder;
viewHolder.txtTitle.Text = (lstData[position].description);
viewHolder.imageView.SetImageBitmap((lstData[position].img));
}
public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
{
LayoutInflater inflater = LayoutInflater.From(parent.Context);
View itemView = inflater.Inflate(Resource.Layout.RecView_Profile, parent, false);
return new RecyclerViewHolder(itemView, ctx);
}
//Get Number Of Items
public override int ItemCount
{
get
{
return lstData.Count;
}
}
}
public class DataForProfile
{
public int imageId { get; set; }
public Bitmap img { get; set; }
public string description { get; set; }
}
class RecyclerViewHolder : RecyclerView.ViewHolder
{
public ImageView imageView { get; set; }
public TextView txtTitle { get; set; }
public TextView txtDescription { get; set; }
public TextView txtDate { get; set; }
public TextView txtLikeCountBlue { get; set; }
public TextView txtLikeCountGreen { get; set; }
public TextView txtComments { get; set; }
private Typeface font;
private Context ctx;
public RecyclerViewHolder(View itemView, Context ctx) : base(itemView)
{
this.ctx = ctx;
txtTitle = itemView.FindViewById<TextView>(Resource.Id.RecView_Profile_TaskName);
imageView = itemView.FindViewById<ImageView>(Resource.Id.imageView1);
txtDescription = itemView.FindViewById<TextView>(Resource.Id.RecView_Profile_Description);
txtDate = itemView.FindViewById<TextView>(Resource.Id.RecView_Profile_Date);
txtLikeCountBlue = itemView.FindViewById<TextView>(Resource.Id.txt_recview_profile_blue);
txtLikeCountGreen = itemView.FindViewById<TextView>(Resource.Id.txt_recview_profile_green);
txtComments = itemView.FindViewById<TextView>(Resource.Id.txt_recview_profile_comments);
font = Typeface.CreateFromAsset(ctx.Assets, "CourierNew.ttf");
txtTitle.SetTypeface(font, TypefaceStyle.Bold);
txtDescription.SetTypeface(font, TypefaceStyle.Normal);
txtDate.SetTypeface(font, TypefaceStyle.Normal);
txtLikeCountBlue.SetTypeface(font, TypefaceStyle.Normal);
txtLikeCountGreen.SetTypeface(font, TypefaceStyle.Normal);
txtComments.SetTypeface(font, TypefaceStyle.Normal);
}
}
类RecyclerViewAdapter:RecyclerView.Adapter
{
私有列表lstData=新列表();
私有上下文ctx;
公共RecycleServiceAdapter(列表lstData,上下文ctx)
{
this.lstData=lstData;
this.ctx=ctx;
}
公共覆盖无效OnBindViewHolder(RecyclerView.ViewHolder,int位置)
{
RecyclerViewHolder=作为RecyclerViewHolder的持有人;
viewHolder.txtTitle.Text=(lstData[position].description);
viewHolder.imageView.SetImageBitmap((lstData[position].img));
}
public override RecyclerView.ViewHolder OnCreateViewHolder(视图组父级,int-viewType)
{
LayoutInflater充气器=LayoutInflater.From(父上下文);
View itemView=充气机.充气(Resource.Layout.RecView\u配置文件,父项,false);
返回新的RecycleServiceWholder(itemView,ctx);
}
//获取项目数
公共覆盖int ItemCount
{
收到
{
返回lstData.Count;
}
}
}
公共类DataForProfile
{
公共int-imageId{get;set;}
公共位图img{get;set;}
公共字符串说明{get;set;}
}
类RecyclerView.ViewHolder:RecyclerView.ViewHolder
{
公共图像视图图像视图{get;set;}
公共文本视图txtTitle{get;set;}
公共文本视图txtDescription{get;set;}
公共文本视图txtDate{get;set;}
公共文本视图txtLikeCountBlue{get;set;}
公共文本视图txtLikeCountGreen{get;set;}
公共文本视图txtComments{get;set;}
专用字体;
私有上下文ctx;
公共RecycleServiceWholder(查看项目视图,上下文ctx):基本(项目视图)
{
this.ctx=ctx;
txtTitle=itemView.findviewbyd(Resource.Id.RecView\u Profile\u TaskName);
imageView=itemView.FindViewById(Resource.Id.imageView1);
txtDescription=itemView.findviewbyd(Resource.Id.RecView\u Profile\u Description);
txtDate=itemView.findviewbyd(Resource.Id.RecView\u Profile\u Date);
txtlikecocountblue=itemView.findviewbyd(Resource.Id.txt\u recview\u profile\u blue);
txtlikecocountgreen=itemView.findviewbyd(Resource.Id.txt\u recview\u profile\u green);
txtComments=itemView.FindViewById(Resource.Id.txt\u recview\u profile\u comments);
font=Typeface.CreateFromAsset(ctx.Assets,“CourierNew.ttf”);
设置字体(字体、字体样式、粗体);
txtDescription.SetTypeface(字体、字体样式.普通);
SetTypeface(字体、字体样式、普通);
SetTypeface(字体、字体样式、普通);
SetTypeface(字体、字体样式、普通);
SetTypeface(字体,Typeface.Normal);
}
}
任何帮助都会很棒 好的,在做了一些重写之后-下面是实现这一点的工作代码:
class RecyclerViewAdapter : RecyclerView.Adapter
{
private List<DataForProfile> lstData = new List<DataForProfile>();
private Context ctx;
private static int TYPE_HEADER = 0;
private static int TYPE_ITEM = 2;
public RecyclerViewAdapter(List<DataForProfile> lstData, Context ctx)
{
this.lstData = lstData;
this.ctx = ctx;
}
public override void OnBindViewHolder(RecyclerView.ViewHolder holder, int position)
{
//Check oif Header orData
if (holder.GetType() == typeof(HeaderViewHolder))
{
HeaderViewHolder headerHolder = holder as HeaderViewHolder;
headerHolder.headerTitle.Text = "hall0";
headerHolder.headerTitle.Click += delegate
{
Toast.MakeText(ctx, "Header!", ToastLength.Long).Show();
};
headerHolder.headerImageView.Click += delegate
{
Toast.MakeText(ctx, "image!", ToastLength.Long).Show();
};
}
else if (holder.GetType() == typeof(RecyclerViewHolder))
{
RecyclerViewHolder viewHolder = holder as RecyclerViewHolder;
viewHolder.txtTitle.Text = (lstData[position-1].description); // - 1 because of the header
viewHolder.imageView.SetImageBitmap((lstData[position-1].img));
}
}
// What layout to be inflated?
public override RecyclerView.ViewHolder OnCreateViewHolder(ViewGroup parent, int viewType)
{
if (viewType == TYPE_ITEM)
{
// Data
LayoutInflater inflater = LayoutInflater.From(parent.Context);
View itemView = inflater.Inflate(Resource.Layout.RecView_Profile, parent, false);
return new RecyclerViewHolder(itemView, ctx);
}
else if (viewType == TYPE_HEADER)
{
//Inflating header view
LayoutInflater inflater = LayoutInflater.From(parent.Context);
View itemView = inflater.Inflate(Resource.Layout.testheader, parent, false);
return new HeaderViewHolder(itemView, ctx);
}
else return null;
}
// Get Number Of Items
public override int ItemCount
{
get
{
return lstData.Count + 1; // +1 due to the header
}
}
// Custom Override to decided whether its the header or the data
public override int GetItemViewType(int position)
{
if (position == 0)
{
return TYPE_HEADER;
}
else if (position == lstData.Count() + 1) //+1 wegen des Headers
{
return TYPE_ITEM;;
}
return TYPE_ITEM;
}
}
// class for header
public class HeaderViewHolder : RecyclerView.ViewHolder
{
public TextView headerTitle;
public ImageView headerImageView;
public HeaderViewHolder(View itemView, Context ctx) : base(itemView)
{
headerTitle = itemView.FindViewById<TextView>(Resource.Id.testheadertitle);
headerImageView = itemView.FindViewById<ImageView>(Resource.Id.testheaderbutton);
}
}
// xml
class RecyclerViewHolder : RecyclerView.ViewHolder
{
public ImageView imageView { get; set; }
public TextView txtTitle { get; set; }
public TextView txtDescription { get; set; }
public TextView txtDate { get; set; }
public TextView txtLikeCountBlue { get; set; }
public TextView txtLikeCountGreen { get; set; }
public TextView txtComments { get; set; }
private Typeface font;
private Context ctx;
public RecyclerViewHolder(View itemView, Context ctx) : base(itemView)
{
this.ctx = ctx;
txtTitle = itemView.FindViewById<TextView>(Resource.Id.RecView_Profile_TaskName);
imageView = itemView.FindViewById<ImageView>(Resource.Id.imageView1);
txtDescription = itemView.FindViewById<TextView>(Resource.Id.RecView_Profile_Description);
txtDate = itemView.FindViewById<TextView>(Resource.Id.RecView_Profile_Date);
txtLikeCountBlue = itemView.FindViewById<TextView>(Resource.Id.txt_recview_profile_blue);
txtLikeCountGreen = itemView.FindViewById<TextView>(Resource.Id.txt_recview_profile_green);
txtComments = itemView.FindViewById<TextView>(Resource.Id.txt_recview_profile_comments);
font = Typeface.CreateFromAsset(ctx.Assets, "CourierNew.ttf");
txtTitle.SetTypeface(font, TypefaceStyle.Bold);
txtDescription.SetTypeface(font, TypefaceStyle.Normal);
txtDate.SetTypeface(font, TypefaceStyle.Normal);
txtLikeCountBlue.SetTypeface(font, TypefaceStyle.Normal);
txtLikeCountGreen.SetTypeface(font, TypefaceStyle.Normal);
txtComments.SetTypeface(font, TypefaceStyle.Normal);
}
}
public class DataForProfile
{
public int imageId { get; set; }
public Bitmap img { get; set; }
public string description { get; set; }
}
类RecyclerViewAdapter:RecyclerView.Adapter
{
私有列表lstData=新列表();
私有上下文ctx;
私有静态int TYPE_头=0;
私有静态int TYPE_ITEM=2;
公共RecycleServiceAdapter(列表lstData,上下文ctx)
{
this.lstData=lstData;
this.ctx=ctx;
}
公共覆盖无效OnBindViewHolder(RecyclerView.ViewHolder,int位置)
{
//检查oif标题或数据
if(holder.GetType()==typeof(HeaderViewHolder))
{
HeaderWilder headerHolder=作为HeaderWilder的支架;
headerHolder.headerTitle.Text=“hall0”;
headerHolder.headerTitle.Click+=代理
{
Toast.MakeText(ctx,“Header!”,ToastLength.Long.Show();
};
headerHolder.headerImageView.Click+=代理
{
Toast.MakeText(ctx,“image!”,ToastLength.Long.Show();
};
}
else if(holder.GetType()==typeof(RecycleServiceWholder))
{
RecyclerViewHolder=作为RecyclerViewHolder的持有人;
viewHolder.txtTitle.Text=(lstData[position-1].description);/-1,因为标题的原因
viewHolder.imageView.SetImageBitmap((lstData[position-1].img));
}
}
//什么布局需要充气?
public override RecyclerView.ViewHolder OnCreateViewHolder(视图组父级,int-viewType)
{
if(viewType==类型\项)
{
//资料
LayoutInflater充气器=LayoutInflater.From(父上下文);
View itemView=充气机.充气(Resource.Layout.RecView\u配置文件,父项,false);
返回新的RecycleServiceWholder(itemView,ctx);
}
else if(viewType==类型\标题)
{
//膨胀头视图
LayoutInflater充气器=LayoutInflater.From(父上下文);
View itemView=inflater.Inflate(Resource.Layout.testheader,父项,false);
返回新的HeadServiceWholder(itemView,ctx);
}
否则返回null;
}
//获取项目数
公共覆盖int ItemCount
{
收到
{
返回lstData.Count+1;//+1(由于标头)
}
}
//自定义覆盖,以决定其是标题还是数据
公共覆盖int GetItemViewType(int位置)
{
如果(位置==0)
{
返回类型_头;
}
如果(位置==lstData.Count()+1)/+1 weg