首先,如果这是一个愚蠢的问题,我很抱歉。我并不懒惰。
问题是,我正在尝试在Android应用程序中实现CardView / RecyclerView。我已经做到了,但问题是卡片之间有间隔,我不知道该如何解决。我查看了代码,但似乎一切都很好。
代码:
RecyclerView
代码:
RecyclerView
<android.support.v7.widget.RecyclerView
android:id="@+id/collapsing_recyclerview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"
android:padding="@dimen/activity_horizontal_margin">
</android.support.v7.widget.RecyclerView>
卡片视图项
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.CardView
android:id="@+id/card_view"
card_view:cardBackgroundColor="@color/colorAccent"
android:layout_gravity="center"
android:layout_width="fill_parent"
android:layout_height="100dp"
android:layout_margin="5dp"
card_view:cardCornerRadius="2dp">
<TextView
android:gravity="center"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="New Text"
android:id="@+id/cardview.name" />
</android.support.v7.widget.CardView>
</LinearLayout>
Adapter :
public class MyRecyclerViewAdapter extends RecyclerView
.Adapter<MyRecyclerViewAdapter
.DataObjectHolder> {
private static String LOG_TAG = "MyRecyclerViewAdapter";
private ArrayList<CardViewItem> mDataset;
private static MyClickListener myClickListener;
public static class DataObjectHolder extends RecyclerView.ViewHolder
implements View
.OnClickListener {
TextView label;
public DataObjectHolder(View itemView) {
super(itemView);
label = (TextView) itemView.findViewById(R.id.cardview_name);
Log.i(LOG_TAG, "Adding Listener");
itemView.setOnClickListener(this);
}
@Override
public void onClick(View v) {
myClickListener.onItemClick(getAdapterPosition(), v);
}
}
public void setOnItemClickListener(MyClickListener myClickListener) {
this.myClickListener = myClickListener;
}
public MyRecyclerViewAdapter(ArrayList<CardViewItem> myDataset) {
mDataset = myDataset;
}
@Override
public DataObjectHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.example_card_view, parent, false);
DataObjectHolder dataObjectHolder = new DataObjectHolder(view);
return dataObjectHolder;
}
@Override
public void onBindViewHolder(DataObjectHolder holder, int position) {
holder.label.setText(mDataset.get(position).getName());;
}
public void addItem(CardViewItem dataObj, int index) {
mDataset.add(index, dataObj);
notifyItemInserted(index);
}
public void deleteItem(int index) {
mDataset.remove(index);
notifyItemRemoved(index);
}
@Override
public int getItemCount() {
return mDataset.size();
}
public interface MyClickListener {
public void onItemClick(int position, View v);
}
}
希望你们能帮我。谢谢!
编辑:我找到了答案。罪魁祸首是我的卡片视图项中的android:layout_height="match_parent"。我将其改为"wrap_content"并解决了问题。感谢大家的帮助! :)