【发布时间】：2016-06-07 01:26:20
【问题描述】：
已解决
我已经把你的答案混在一起了，所以我决定在这里写下来。
关键是 ViewHolder 构造函数：
我删除了setOnClickListener() 和onClick() 方法，并在ObjectAdapter.java 中定义了这个内部类。
public static class ViewHolder extends RecyclerView.ViewHolder{
public ViewHolder(View itemView) {
super(itemView);
card_first_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
int position = getAdapterPosition();
Toast.makeText(v.getContext(), object.get(position).getName(), Toast.LENGTH_SHORT).show();
}
});
card_second_btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(v.getContext(), "Forward button", Toast.LENGTH_SHORT).show();
}
});
}
}
仅此而已。其余的课程都是一样的。
ObjectFragment.java 是：
public class ObjectFragment extends Fragment {
public void ObjectFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater layoutInflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this Fragment
return layoutInflater.inflate(R.layout.fragment_object, container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
final ArrayList<Object> objects = initializeList();
if(!objects.isEmpty()) {
RecyclerView recyclerView = (RecyclerView) getActivity().findViewById(R.id.objects_recyclerView);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.addItemDecoration(new SimpleDivider(getActivity().getApplicationContext()));
final ObjectAdapter objectAdapter = new ObjectAdapter(objects, R.layout.card_object);
recyclerView.setAdapter(objectAdapter);
}
}
private ArrayList<Object> initializeList() {
ArrayList<Object> objects= new ArrayList<>();
objects.add(new Object(...));
return objects;
}
}
非常感谢你们。
原始问题
我有一个RecyclerView，其中包含一些CardViews。这个CardViews 有两个不同的ImageButton，当你点击它们时会产生不同的效果（很明显）。
这里是card_object.xml
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/object_card"
card_view:cardCornerRadius="2dp"
card_view:cardElevation="2dp"
card_view:cardBackgroundColor="@color/colorPrimary"
android:clickable="true">
<LinearLayout
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="vertical"
android:background="@color/colorPrimary">
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/object_card_first_button"
android:src="@drawable/contact_100px"
android:maxHeight="25dp"
android:maxWidth="25dp"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:background="@color/transparentBackgroundPrimary"
android:layout_marginRight="54dp"
android:layout_marginEnd="54dp"/>
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/forward_100px"
android:maxHeight="25dp"
android:maxWidth="25dp"
android:adjustViewBounds="true"
android:scaleType="centerCrop"
android:background="@color/transparentBackgroundPrimary"
android:id="@+id/object_card_second_button" />
</LinearLayout>
</android.support.v7.widget.CardView>
这是我ObjectAdapter.java的主要代码：
public class ObjectAdapter
extends RecyclerView.Adapter<ObjectAdapter.ViewHolder>
implements View.OnClickListener {
private ArrayList<Object> objects;
private int itemLayout;
private View.OnClickListener onClickListener;
public ObjectAdapter(ArrayList<Object> objects, int itemLayout) {
this.objects = objects;
this.itemLayout = itemLayout;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(itemLayout, viewGroup, false);
view.setOnClickListener(this);
return new ViewHolder(view);
}
public void setOnClickListener(View.OnClickListener listener) {
this.onClickListener = listener;
}
public void onClick(View view) {
if(onClickListener != null) {
onClickListener.onClick(view);
}
}
我的ObjectFragment.java 是下一个：
public class ObjectFragment extends Fragment {
public void ObjectFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater layoutInflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this Fragment
return layoutInflater.inflate(R.layout.fragment_object, container, false);
}
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
final ArrayList<Object> objects = initializeList();
if(!objects.isEmpty()) {
RecyclerView recyclerView = (RecyclerView) getActivity().findViewById(R.id.objects_recyclerView);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.addItemDecoration(new SimpleDivider(getActivity().getApplicationContext()));
final ObjectAdapter objectAdapter = new ObjectAdapter(objects, R.layout.card_object);
objectAdapter.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Here I can manage my Object attributes,
// but no the ImageButtons itselves
}
});
recyclerView.setAdapter(objectAdapter);
}
}
private ArrayList<Object> initializeList() {
ArrayList<Object> objects= new ArrayList<>();
objects.add(new Object(...));
return objects;
}
}
我可以获取Object 属性的值（名称、标题等），然后单击CardView 等等，但我无法使ImageButton 拥有自己的onClick .
我不知道使用android:onClick()是否可以显示特定卡的信息，但这是另一回事。
所以我的问题是如何让这两个按钮确实有自己的OnClickListener，我应该在哪里声明它以及之后如何处理RecyclerView的每个项目的信息（这部分几乎实现了)。
有什么想法吗？非常感谢！
【问题讨论】：
标签： java android fragment android-recyclerview