我有以下代码:
class BookListActivity : AppCompatActivity()
{
var array = arrayOf("Item 1", "Item 2", "Item 3", "Item 4", "Item 5", "Item 6", "Item 7", "Item 8", "Item 9", "Item 10", "Item 11")
override fun onCreate(savedInstanceState: Bundle?)
{
super.onCreate(savedInstanceState)
setContentView(R.layout.book_list)
val adapter = ArrayAdapter(this, R.layout.book_list_item, R.id.book_title, array)
val listView : ListView = findViewById(R.id.book_list)
listView.adapter = adapter
}
}
我需要为 listView 上的每个元素添加一个单击侦听器。
我已尝试以下方法但不起作用:
listView.setOnItemClickListener
{
val intent = Intent(this, BookDetailActivity::class.java)
startActivity(intent)
}
我还需要知道我单击了哪个 ListView 元素。我怎样才能做到这一点?
您必须处理所有参数AdapterView.OnItemClickListener https://developer.android.com/reference/android/widget/AdapterView.OnItemClickListener.html
你的听众应该是这样的:
listView.setOnItemClickListener { parent, view, position, id ->
val element = adapter.getItemAtPosition(position) // The item that was clicked
val intent = Intent(this, BookDetailActivity::class.java)
startActivity(intent)
}
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