差异listview.setOnItemClickListener和row.setOnClickListener [英] Difference in listview.setOnItemClickListener and row.setOnClickListener

问题描述

我创建一个自定义阵列适配器，我现在想实现它处理一下视图的功能。我有考虑两种选择，但我不知道是否有性能/运行速度或什么区别吗？

选项1，在一个ArrayAdapter本身：

  row.setOnClickListener（新OnClickListener（）{            @覆盖
            公共无效的onClick（视图v）{
                // TODO自动生成方法存根
            }
        }）;
 

选项2，从主要活动：

  listView.setAdapter（适配器）;
        listView.setOnItemClickListener（新OnItemClickListener（）{            @覆盖
            公共无效onItemClick（适配器视图＆LT;＆GT;为arg0，ARG1观，诠释ARG2，
                    长ARG3）{
                // TODO自动生成方法存根            }
        }）;
 

或者，他们完全一样的？

解决方案

  

或者，他们完全一样的？

在第一种方法，你会为每一行自己的听众e.q.你有100行，所以你有100个听众，是不好的。在第二种方法，您将创建一个监听器为整体的ListView。

  android.widget.AdapterView.OnItemClickListener
android.view.View.OnClickListener
 

怎么可以看到，首先是更舒适，直接指定带适配器的小部件一样处理ListView的是。而且，这种方法通常建议使用。

您必须通过onItemClick（）方法，code更可读和它的清晰。参数，每排连接

I am creating a custom array adapter, I now want to implement a function which handles clicking the view. I am having two options in mind, but I am wondering if there is a difference in performance/working speed or something?

Option 1, in the arrayAdapter itself:

row.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub


            }
        });

Option 2, from the main Activity:

listView.setAdapter(adapter);
        listView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,
                    long arg3) {
                // TODO Auto-generated method stub

            }


        });

Or are they exactly the same?

解决方案

Or are they exactly the same?

In first approach you will create for each row own listener e.q. you have 100 rows so you'll have 100 listeners that is not good at all. In second approach you will create one listener for whole ListView.

android.widget.AdapterView.OnItemClickListener
android.view.View.OnClickListener

How you can see, first is more comfortable and directly designated for dealing with adapter widgets like ListView is. Also this approach is generally recommended and used.

You have connection with each row via parameters of onItemClick() method and code is more human-readable and it's clearer.

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