Clash Royale CLAN TAG#URR8PPP

How to add Different OnClickListners on views of ListView item to perform different actions

Are there any possibilities to check what view inside ListView Item was clicked?

In other words, when you click on different Views inside ListView item app should perform a different action.

In details, I have a simple Book.java class that contains some book description.

Then I create ListView<Book> using BooksAdapter.class:

ListView

ListView

Book.java

ListView<Book>

BooksAdapter.class

public class BooksAdapter extends ArrayAdapter<Book>
public BooksAdapter (Context context, List<Book> books)
super(context,0,books);

@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent)

// ConstraintLayout constraintLayout = new ConstraintLayout();
// constraintLayout.setVisibility();
View listItemView = convertView;
if (listItemView == null)
listItemView = LayoutInflater.from(getContext()).inflate(
R.layout.books_list_item, parent, false);

Book currentBook = getItem(position);
ImageView coverView = (ImageView) listItemView.findViewById(R.id.preview_image_view);
if (currentBook.getImage() == "No cover")
coverView.setImageResource(R.drawable.no_book_cover);
else
Picasso.get().load(currentBook.getImage()).into(coverView);

TextView authorTextView = (TextView)listItemView.findViewById(R.id.autor_text);
authorTextView.setText(formatAuthor(currentBook.getAuthor(),currentBook.getDate()));
TextView titleTextView = (TextView)listItemView.findViewById(R.id.title_text);
titleTextView.setText(currentBook.getTitle());
//TextView descrTextView = (TextView)listItemView.findViewById(R.id.description_text);
//descrTextView.setText(currentBook.getDescription());
return listItemView;


private String formatAuthor (String name,String date )
name = name.substring(2,name.length()-2);
date = date.substring(0,4);
String fullString = name + ", " + date;
return(fullString);




books_list_item.xml:

books_list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/list_item"
android:layout_width="match_parent"
android:layout_height="120dp"
android:orientation="horizontal"
android:paddingEnd="16dp"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingStart="16dp"
android:paddingBottom="16dp"
android:paddingTop="8dp">
<ImageView
android:id="@+id/preview_image_view"
android:layout_width="80dp"
android:layout_height="match_parent" />
<LinearLayout
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/autor_text"
android:layout_width="match_parent"
android:layout_height="40dp"
android:maxLines="1"
android:paddingLeft="8dp"
android:paddingRight="8dp"
android:paddingTop="8dp"
android:textColor="@color/textColorPrimary"
android:textSize="16sp" />
<TextView
android:id="@+id/title_text"
android:layout_width="match_parent"
android:layout_height="80dp"
android:layout_gravity="center_vertical"
android:maxLines="2"
android:paddingLeft="8dp"
android:paddingRight="8dp"
android:paddingTop="0dp"
android:textColor="@color/textColorLight"
android:textSize="16sp" />
</LinearLayout>
<ImageView
android:layout_width="40dp"
android:layout_height="match_parent"
android:src="@drawable/ic_info_black_24dp"
android:scaleType="center"/>
</LinearLayout>
<View
android:layout_width="match_parent"
android:layout_height="0.5dp"
android:background="@android:color/darker_gray"/>
</LinearLayout>


In MainActivity.java create mAdapter and override setOnItemClickListener:

MainActivity.java

setOnItemClickListener

ListView booksListView = (ListView) findViewById(R.id.list);
mAdapter = new BooksAdapter(this, new ArrayList<Book>());
booksListView.setAdapter(mAdapter);

booksListView.setOnItemClickListener(new AdapterView.OnItemClickListener()
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int position, long l)
Book book = mAdapter.getItem(position);

ad = new AlertDialog.Builder(BooksListActivity.this);
ad.setTitle("Book description");
ad.setMessage(book.getDescription());

AlertDialog alert = ad.create();
alert.show();
//ad.create();

);


And here are some general question can we set onClickListeners on different Views inside Item (@+id/autor_text and @+id/title_text for example) and perform different actions in these cases?

I'm reading about this several places but doesn't find any helpful things.Thanks for any help.

onClickListeners

Views

@+id/autor_text

@+id/title_text

2 Answers
2

Inside your getView() method set onClickListener to all your different Views and perform respective action.

getView()

onClickListener

Views

By implementing this code:-

authorTextView.setOnClickListener(this);
titleTextView.setOnClickListener(this);

public void onClick(View v)

switch(v.getId())
case R.id.authorTextView:
//code to be written to handle the click event
break;

case R.id.titleTextView:
//code to be written to handle the click event
break;


};


Inside your getView

getView

authorTextView.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
//Do your action

);


titleTextView.setOnClickListener(new View.OnClickListener()
@Override
public void onClick(View view)
//Do your action

);


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