处理按钮事件列表视图问题的每行中 [英] Handling button event in each row of Listview issue

问题描述

我是新来的Andr​​oid和正在试图建立一个新的Andr​​oid应用程序。但是我在努力siolve在我的项目的问题之一。

I am new to android and am trying to develop a new android app. But I am struggling to siolve one of the problems in my project.

我使用的 baseadapter 扩展列表视图，需要thelistview的每一行中添加一个按钮。当我点击在ListView的任何行的按钮，我想它应该被删除。然而，当我这样做，其他的一些按钮也得到了列表视图中删除。

I am using a listview extended from baseadapter and need to add a button in each row of thelistview. When I click on the button in any row of the listview, I want that it should be removed. However when I do so, some of the other buttons also get removed in the listview.

我该如何解决这个问题呢？谢谢。

How can I solve this problem? Thank you..

推荐答案

您有一个适配器，活动和某种类型的数据源

You have an adapter, activity and some sort of data source

在您的适配器您可以将一些数据按钮，可以告诉从另一个：

In your adapter you attach some data to buttons to be able to tell one from another:

public class ExpAdapter extends ListAdapter {

    @Override
    public View getView(int groupPosition, boolean isExpanded,
            View convertView, ViewGroup parent) {
                /* SOME CODE HERE*/
        convertViewButton.setTag(buttonId);
        return convertView;
    }
                /* SOME CODE HERE*/
}

在您的活动您标记按钮ID作为一个被隐藏的：

in your activity you mark button id as the one to be hidden:

        public boolean onItemLongClick(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {
            storageOfHiddenButtonsIds.add((Long)arg1.getTag());
        }};

和这样便ListAdapter变化：

and then ListAdapter changes like this:

@Override
public View getView(int groupPosition, boolean isExpanded,
        View convertView, ViewGroup parent) {
            /* SOME CODE HERE*/

    convertViewButton.setTag(buttonId);

    if(storageOfHiddenButtonsIds.contains(buttonId))
    {
      convertViewButton.setVisiblity(View.GONE);
    }
    return convertView;
}

，当你希望你的adatper改变你，不要忘了叫

and when you want your adatper to change you, don't forget to call

this.expAdapterAllTaks.notifyDataSetChanged();

对不起，在我的code任何错误，但我只是想给你出个主意。

Sorry for any errors in my code, but i just wanted to give you an idea.

这篇关于处理按钮事件列表视图问题的每行中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！