android - ListView 项点击次数

Question

我有一个包含一些项目的 ListView 。我想知道列表项目的点击情况。例如，如果我第一次点击 ListView 项目，就会出现一条 toast 消息。再次点击同一个项目， toast 消息将是你点击了第二次相同的项目。

最后我想知道单个 ListView 项目的“偶数”点击和“奇数”点击

listView.setOnItemClickListener(new AdapterView.OnItemClickListener()
{ public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        if(firstTime) {
            firstTime = false;
            if(count%2==0){
                Toast.makeText(getApplicationContext(), "Clicked on Row2nd: " +
                country.getName(), Toast.LENGTH_LONG).show();
                count=0;
            }
            else{
                Toast.makeText(getApplicationContext(), "Clicked on Row1st: " +
                country.getName(), Toast.LENGTH_LONG).show();
                count=0;
            }
        }
        else{
            firstTime=true;
            Toast.makeText(getApplicationContext(), "Clicked on Row1111: " +
            country.getName(), Toast.LENGTH_LONG).show();
            count=count+1;

        }
    }
});

Answer 1

您可以添加一个额外的 ArrayList，它将为您的每个 ListView 项目包含一个计数器。

假设您有:

ArrayList<String> listViewData = getSomeData();
ArrayList<Integer> dataClickCount = new ArrayList<>();
for(String item : listViewData)
{
    dataClickCount.add(0);
}

稍后在您的听众中:

listView.setOnItemClickListener(new AdapterView.OnItemClickListener() { public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

   if(dataClickCount.get(posion)%2==0){
       Toast.makeText(getApplicationContext(), "Clicked on Row1nd, odd click: " + country.getName(), Toast.LENGTH_LONG).show();
       dataClickCount.set(posion,1);
   }
   else{
       Toast.makeText(getApplicationContext(), "Clicked on Row2st, even click: " + country.getName(), Toast.LENGTH_LONG).show();
        dataClickCount.set(posion,0);
   }


}});