I have a cardView
card_contents.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="match_parent">
<android.support.v7.widget.CardView android:layout_width="match_parent"
android:layout_height="150dp"
android:layout_marginTop="10dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:id="@+id/card_view">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#ffa3a4a6">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/card_text"
android:layout_gravity="center"
android:gravity="center"
android:text="B.E"
android:layout_centerInParent="true"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:id="@+id/button1"
android:layout_toLeftOf="@+id/view"
android:layout_alignParentLeft="true"
android:text="2010"
android:textColor="#000000"
android:background="@android:color/transparent"
/>
<View
android:layout_width="2dp"
android:layout_height="@dimen/abc_action_button_min_height_material"
android:layout_centerHorizontal="true"
android:id="@+id/view"
android:background="@android:color/black"
android:layout_alignParentBottom="true"
/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/button2"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_toRightOf="@+id/view"
android:background="@android:color/transparent"
android:textColor="@android:color/black"
android:text="2014"/>
</RelativeLayout>
</android.support.v7.widget.CardView>
</RelativeLayout>
MainActivity.class
public class MainActivity extends ActionBarActivity {
RecyclerView recyclerView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
List<String> list=new ArrayList<String>();
list.add("Hello");
list.add("Hello World");
list.add("Hello World Beings");
recyclerView=(RecyclerView)findViewById(R.id.recycler_view);
recyclerView.setItemAnimator(new DefaultItemAnimator());
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager layoutManager=new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
RecyclerView.Adapter adapter=new MyAdapter(list);
recyclerView.setAdapter(adapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
MyAdapter.class
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
List<String> list;
public MyAdapter(List<String> list){
this.list=list;
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View v=LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.card_contents,viewGroup,false);
return new MyViewHolder(v);
}
@Override
public void onBindViewHolder(MyViewHolder myViewHolder, int i) {
myViewHolder.textView.setText(list.get(i));
}
@Override
public int getItemCount() {
return list.size();
}
public static class MyViewHolder extends RecyclerView.ViewHolder{
TextView textView;
MyViewHolder(View view){
super(view);
this.textView= (TextView) view.findViewById(R.id.card_text);
}
}
}
I actually want to set click listener for the buttons inside the cards and launch new activity depending on which button is pressed and on what card it is pressed. Is there a way to accomplish this? I have looked around but did'nt find any answers for setting click listeners for items inside of a cardView.I am new to android and any help will be appreciated. Thanks in advance
Add click listener for button inside a cardView populated using a recyclerView
Add click event to buttons which is in RecyclerView as:
1. Get Button from xml in same way as doing for TextView in MyViewHolder class:
public static class MyViewHolder extends RecyclerView.ViewHolder{
TextView textView;
Button btnButton1;
MyViewHolder(View view){
super(view);
this.textView= (TextView) view.findViewById(R.id.card_text);
this.btnButton1= (Button) view.findViewById(R.id.button1);
... do same for other Button
}
}
2. Add setOnClickListener method for Button in onBindViewHolder method:
@Override
public void onBindViewHolder(MyViewHolder myViewHolder, int i){
myViewHolder.textView.setText(list.get(i));
myViewHolder.btnButton1.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
/// button click event
}
});
}
Define your onClick listener on onBindViewHolder method in CustomAdapter.
Let's say you have:
<android.support.v7.widget.CardView
android:id="@+id/cv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="4dp"
android:elevation="4dp"
app:cardCornerRadius="2dp">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="16dp">
<TextView
android:id="@+id/listText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:padding="8dp"
android:text="New Text" />
<ImageButton
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/listText"
android:layout_alignParentRight="true"
android:onClick="onClickBotonBorrar"
android:background="?android:selectableItemBackground"
android:src="@drawable/ic_action_borrar" />
</RelativeLayout>
</android.support.v7.widget.CardView>
Note this part: android:onClick="onClickBotonBorrar"
On your Activity add this:
public void onClickBotonBorrar (View v) {
//Do whatever you want when user clicks on your ImageButton
}
It is recommended not to have the click event inside your adapter but inside your activity.
Note: It's similar for button
Rohit Singh
Another approach would be using an Interface
1) Create an interface
public interface ItemClickListener{
public void startSecondActivity(int index);
public void startThirdActivity(int index);
}
2) Implement interface in your Activity
public class MainActivity extends AppcompatActivity implements ItemClickListener {
.........
public void startSecondActivity(int index){
Intent i = new Intent(MainActivity.this, SecondActivity.class);
startActivity(i);
}
public void startThirdActivity(int index){
Intent i = new Intent(MainActivity.this, ThirdActivity.class);
startActivity(i);
}
}
3) Use ItemListener in RecyclerViewAdapter
MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder>{
private ItemListener listener;
public MyAdapter(Context context){
listener = (ItemListener)context;
}
Override
public void onBindViewHolder(MyViewHolder myViewHolder, int position){
myViewHolder.btnButton1.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
listener.startSecondActivity(position)
}
});
myViewHolder.btnButton2.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View v) {
listener.startThirdActivity(position)
}
});
}
}
来源：https://stackoverflow.com/questions/28379302/add-clicklistner-for-button-inside-a-cardview-populated-using-a-recyclerview