我有联系人列表,我已使用CardView在RecyclerView上显示此列表。
列表显示完美但现在我想制作可点击的卡片视图。因此,当我点击特定联系人时,我将显示特定联系人的详细信息。
列表已完美显示,但是当我点击特定联系人时,点击事件无效。
我还在ContactAdapter类的CardView和OnClickListener事件上使用了clickable true。
我做了什么:
我有三个布局activity_main,contact_list,contact_detail。
在activity_main中,我使用了recycler_view。 在contact_list中,我使用了card_view并将其与Recycler视图绑定。
我有三个java类: 联系 - 我用getter和setter定义变量 ContactAdapter - 我获取联系人并将其与卡片视图绑定。 MainActivity - 我获取所有联系人并在回收者视图中显示它。
activity_main布局代码:
<android.support.v7.widget.RecyclerView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:id="@+id/recycler_view">
</android.support.v7.widget.RecyclerView>
contact_list_layout代码:
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/card_view"
android:clickable="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Remo"
android:id="@+id/person_name"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/person_name"
android:text="example@gmail.com"
android:id="@+id/person_email"/>
</RelativeLayout>
</android.support.v7.widget.CardView>
Java类代码:
MainActivity Code:
RecyclerView recyclerView;
RecyclerView.Adapter adapter;
RecyclerView.LayoutManager layoutManager;
String[] name,email;
ArrayList<Contact> list = new ArrayList<Contact>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
name = getResources().getStringArray(R.array.person_name);
email = getResources().getStringArray(R.array.person_email);
int count = 0;
for (String Name : name)
{
Contact contact = new Contact(Name,email[count]);
count++;
list.add(contact);
}
recyclerView= (RecyclerView) findViewById(R.id.recycler_view);
layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setHasFixedSize(true);
adapter=new ContactAdapter(list,this);
recyclerView.setAdapter(adapter);
}
ContactAdapter代码:
ArrayList<Contact> contacts = new ArrayList<Contact>();
Context ctx;
public ContactAdapter(ArrayList<Contact> contacts, Context ctx) {
this.contacts = contacts;
this.ctx = ctx;
}
@Override
public ContactViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.contact_list_layout, parent, false);
ContactViewHolder contactViewHolder = new ContactViewHolder(view, ctx, contacts);
return contactViewHolder;
}
@Override
public void onBindViewHolder(ContactViewHolder holder, int position) {
Contact CON = contacts.get(position);
holder.person_name.setText(CON.getName());
holder.person_email.setText(CON.getEmail());
}
@Override
public int getItemCount() {
return contacts.size();
}
public static class ContactViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView person_name, person_email;
ArrayList<Contact> contacts = new ArrayList<Contact>();
Context ctx;
public ContactViewHolder(View view, Context ctx, ArrayList<Contact> contacts) {
super(view);
this.contacts = contacts;
this.ctx = ctx;
person_name = (TextView) view.findViewById(R.id.person_name);
person_email = (TextView) view.findViewById(R.id.person_email);
}
@Override
public void onClick(View v) {
int position = getAdapterPosition();
Contact contact = this.contacts.get(position);
Intent intent =new Intent(this.ctx,ContactDetail.class);
this.ctx.startActivity(intent);
}
}
答案 0 :(得分:6)
我在项目视图中移除android:clickable="true"
时修复了同样的问题。
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="@dimen/item_dashboard_size"
android:layout_margin="@dimen/item_dashboard_margin">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="?selectableItemBackground"
android:padding="@dimen/item_dashboard_padding">
.....
</android.support.v7.widget.CardView>
答案 1 :(得分:2)
从您的代码中,您错过了为您的cardview设置监听器。要触发onClick(View v)
方法,您必须为相应的视图设置侦听器。
例如:
@Override
public void onBindViewHolder(ContactViewHolder holder, int position) {
Contact CON = contacts.get(position);
holder.person_name.setText(CON.getName());
holder.person_email.setText(CON.getEmail());
holder.card_view.setOnClickListener(this)
}
更新ViewHolder
public static class ContactViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView person_name, person_email;
CardView card_view;
ArrayList<Contact> contacts = new ArrayList<Contact>();
Context ctx;
public ContactViewHolder(View view, Context ctx, ArrayList<Contact> contacts) {
super(view);
this.contacts = contacts;
this.ctx = ctx;
card_view = (CardView) view.findViewById(R.id.card_view);
person_name = (TextView) view.findViewById(R.id.person_name);
person_email = (TextView) view.findViewById(R.id.person_email);
}
修改强>
由于您的父布局是CardView,因此您可以直接设置侦听器而无需启动
实施例
public ContactViewHolder(View view, Context ctx, ArrayList<Contact> contacts) {
super(view);
view.setOnClickListener(this);
this.contacts = contacts;
this.ctx = ctx;
person_name = (TextView) view.findViewById(R.id.person_name);
person_email = (TextView) view.findViewById(R.id.person_email);
}
答案 2 :(得分:2)
确保使用卡片视图的前景和cardBackgroundColor
<android.support.v7.widget.CardView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true"
android:foreground="?android:attr/selectableItemBackground"
app:cardBackgroundColor="@color/blue">
这一定看起来很奇怪但是有效,因为没有它,cardview不会触发OnClickEvent。
我有测试,只有app:cardBackgroundColor =&#34; @ color / blue&#34;工作!!!
答案 3 :(得分:1)
不是在 ContactViewHolder 类(适配器内的私有静态类)中实现OnClickListener(),而是在 onBindViewHolder()方法中实现它。
检查此代码。
@Override
public ContactViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.contact_list_layout, parent, false);
ContactViewHolder contactViewHolder = new ContactViewHolder(view);
return contactViewHolder;
}
@Override
public void onBindViewHolder(ContactViewHolder holder, int position) {
Contact CON = contacts.get(position);
holder.person_name.setText(CON.getName());
holder.person_email.setText(CON.getEmail());
holder.card_view.setOnClickListener(new OnClickListener{
@Override
public void onClick(View v) {
// your click code here
}
});
}
@Override
public int getItemCount() {
return contacts.size();
}
public static class ContactViewHolder extends RecyclerView.ViewHolder {
TextView person_name, person_email;
CardView card_view;
public ContactViewHolder(View view) {
super(view);
person_name = (TextView) view.findViewById(R.id.person_name);
person_email = (TextView) view.findViewById(R.id.person_email);
card_view=(CardView) view.findViewById(R.id.card_view);
}
}
答案 4 :(得分:0)
请参阅此处:https://github.com/codepath/android_guides/wiki/Using-the-RecyclerView 您可以为旧代码获得更漂亮的代码。