我查找了可能的解决方案,但我无法弄清楚如何在我的情况下应用它们。 我正在使用RecyclerView在其中显示多个CardView。最初所有卡都有白色背景,我想在触摸卡时更改背景颜色。每个CardView都会显示名称和ID,如“MyCards”中所述。 class:
public class MyCards {
private String sName;
private int sId;
private boolean sPresent;
public String getName() {
return this.sName;
}
public MyCards(String sName, int sId, boolean sPresent) {
this.sName = sName;
this.sId = sId;
this.sPresent = sPresent;
}
public void setName(String t) {
this.sName = t;
}
public int getId() {
return sId;
}
public void setId(int id) {
this.sId = id;
}
public boolean isPresent() {
return sPresent;
}
public void setPresent(boolean present) {
this.sPresent = present;
}
}
我在' Roster'中制作了这些MyCards对象的ArrayList。 class:
public class Roster extends ActionBarActivity{
private static final int READ_REQUEST_CODE = 42;
private static final String TAG = null;
private RecyclerView rObject;
private MyAdapter adapter;
String abc = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.roster_recycle);
rObject = (RecyclerView)findViewById(R.id.recycler_view);
LinearLayoutManager llm = new LinearLayoutManager(this);
llm.setOrientation(LinearLayoutManager.VERTICAL);
rObject.setLayoutManager(llm);
MyCards c1 = new MyCards("Abhinav", 123, true);
MyCards c2 = new MyCards("Abhishek", 13, false);
performFileSearch();
c1.setName("Abhinav");
c2.setName("Baba");
List<MyCards> cardList = new ArrayList<MyCards>();
cardList.add(c1);
cardList.add(c2);
adapter = new MyAdapter(Roster.this,cardList);
rObject.setAdapter(adapter);
}
CardView在item_layout.xml文件中定义:
<android.support.v7.widget.CardView
android:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="10dp"
android:clickable="true"
android:foreground="?android:attr/selectableItemBackground"
card_view:cardCornerRadius="4dp" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView
android:id="@+id/sName"
android:layout_width="match_parent"
android:layout_height="20dp"
android:gravity="center_vertical"
android:text="contact det"
android:textSize="14dp" />
<TextView
android:id="@+id/sId"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/sName"
android:layout_marginLeft="5dp"
android:layout_marginTop="10dp"
android:gravity="center_vertical"
android:text="Name"
android:textSize="10dp" />
<TextView
android:id="@+id/sPresent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/sId"
android:layout_marginLeft="5dp"
android:layout_marginTop="10dp"
android:gravity="center_vertical"
android:text="Present"
android:textSize="10dp" />
</RelativeLayout>
</android.support.v7.widget.CardView>
我的问题是:如果我点击显示&#39; c1&#39;对象然后如何识别它来自&#39; c1&#39;而不是&#39; c2&#39;。在我们显示多张卡的情况下,如何使用点击处理程序?
对不起,如果我的问题太基本但我真的坚持了。
答案 0 :(得分:1)
非常感谢您的回复,他们真的很有帮助。最后,我在YouTube上发现了一个视频,以一种很好的方式解释了这个概念。我发布链接,以便其他人也可以受益,如果他们卡住。这是视频 -
答案 1 :(得分:0)
查看使用带有RecyclerView的onItemClickListener的this答案。
答案 2 :(得分:0)
公共类MyAdapter扩展了RecyclerView.Adapter {
Context mContext;
ArrayList<MyCard> mData;
public MyAdapter(Context context , ArrayList<MyCard> data ) {
mContext = context;
mData = data;
}
public class ViewHolder extends RecyclerView.ViewHolder{
private TextView sName, sId , sPresent;
public ViewHolder(View itemView) {
super(itemView);
sName = (TextView) itemView.findViewById(R.id.sName);
sId = (TextView) itemView.findViewById(R.id.sId);
sPresent = (TextView) itemView.findViewById(R.id.sPresent);
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// your logic
}
});
}
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout , parent , false);
ViewHolder vh = new ViewHolder(v);
return vh;
}
@Override
public int getItemCount() {
return mData.size();
}
@Override
public void onBindViewHolder(ViewHolder holder, final int position) {
final MyCard card = mData.get(position);
holder.sName.setText(card.getName().toString());
holder.sId.setText(card.getId().toString());
holder.sPresent.setText(card.getPresent().toString());
}
}