Android的更新列表视图不断，但保留的onClick功能 [英] Updating Android Listview Constantly but Retain onClick functionality

问题描述

我创建的每个列表视图查看一个计时器，但是当我打电话notifyDataSetChange（）不断，我无法点击我的按钮。

有没有一种方法不断更新时，可以保留一个ListView视图内按钮，EDITTEXT功能。有没有什么办法？

谢谢！

UPDATE：这是code我正在不间断的更新

  @覆盖
公共无效onActivityCreated（@Nullable捆绑savedInstanceState）{
    super.onActivityCreated（savedInstanceState）;    处理器=新的处理程序（）;
    handler.post（可运行）;}
可运行可运行=新的Runnable（）{
    @覆盖
    公共无效的run（）{
        adapterWhiteMales.notifyDataSetChanged（）;
        handler.postDelayed（可运行，500）;
    }
};
 

更新：我在每个列表视图视图按钮
没把我所有的code为getChildView和按钮点击，但这个是主要的设置。

  @覆盖
公共查看getChildView（最终诠释groupPosition，最终诠释childPosition，布尔isLastChild，查看视图的ViewGroup以及parentView）
{
   如果（查看== NULL）{        viewHolderItem =新ViewHolderItem（）;
        吹气=（LayoutInflater）context.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
        鉴于= inflater.inflate（R.layout.row_explistview_child_meet_athletes，parentView，FALSE）;
        viewHolderItem.btnStartLap =（按钮）view.findViewById（R.id.btnStartLap）;        view.setTag（viewHolderItem）;
    }其他{
        //使用已经初始化的变量
        viewHolderItem =（ViewHolderItem）view.getTag（）;
    }
   viewHolderItem.btnStartLap.setOnClickListener（新View.OnClickListener（）
   {
            @覆盖
            公共无效的onClick（视图v）{
                Log.e（，启动单圈单击按钮！）;
            }
   }}
 

解决方案

我在我的应用程序之一了一个问题，如果我试图onClick的监听器多次设置将打破监听器，并导致怪异的行为。

试着改变你的getChildView方法，像这样

  @覆盖
公共查看getChildView（最终诠释groupPosition，最终诠释childPosition，布尔isLastChild，查看视图的ViewGroup以及parentView）
{
    如果（查看== NULL）{        viewHolderItem =新ViewHolderItem（）;
        吹气=（LayoutInflater）context.getSystemService（Context.LAYOUT_INFLATER_SERVICE）;
        鉴于= inflater.inflate（R.layout.row_explistview_child_meet_athletes，parentView，FALSE）;
        viewHolderItem.btnStartLap =（按钮）view.findViewById（R.id.btnStartLap）;
        viewHolderItem.btnStartLap.setOnClickListener（新View.OnClickListener（）
        {
            @覆盖
            公共无效的onClick（视图v）{
                Log.e（，启动单圈单击按钮！）;
            }
        }
        view.setTag（viewHolderItem）;
    }其他{
        //使用已经初始化的变量
        viewHolderItem =（ViewHolderItem）view.getTag（）;
    }
}
 

I am creating a timer in each Listview view but when I call notifyDataSetChange() constantly, I am unable to click my buttons.

Is there a way to retain button and editText functionality inside a listview view when updated constantly. Is there any alternatives?

Thanks!

UPDATE: This is the code I am running to update continously

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);

    handler = new Handler();
    handler.post(runnable);

}
Runnable runnable = new Runnable(){
    @Override
    public void run() {
        adapterWhiteMales.notifyDataSetChanged();
        handler.postDelayed(runnable, 500);
    }
};

UPDATE: My buttons in each listview view Didn't put all my code for the getChildView and button on click, but this is the main setup.

@Override
public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View view, ViewGroup parentView)
{
   if (view == null) {

        viewHolderItem = new ViewHolderItem();
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        view = inflater.inflate(R.layout.row_explistview_child_meet_athletes, parentView, false);
        viewHolderItem.btnStartLap = (Button) view.findViewById(R.id.btnStartLap);

        view.setTag(viewHolderItem);
    } else {
        // Use already initialized variables
        viewHolderItem = (ViewHolderItem) view.getTag();
    }
   viewHolderItem.btnStartLap.setOnClickListener(new View.OnClickListener()      
   {
            @Override
            public void onClick(View v) {
                Log.e("", "Start Lap Button Clicked!");
            }
   }

}

解决方案

I had an issue in one of my apps where if I tried to set the onClick listener multiple times it would break the listener and cause weird behavior.

Try changing your getChildView method like so

@Override
public View getChildView(final int groupPosition, final int childPosition, boolean isLastChild, View view, ViewGroup parentView)
{
    if (view == null) {

        viewHolderItem = new ViewHolderItem();
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        view = inflater.inflate(R.layout.row_explistview_child_meet_athletes, parentView, false);
        viewHolderItem.btnStartLap = (Button) view.findViewById(R.id.btnStartLap);
        viewHolderItem.btnStartLap.setOnClickListener(new View.OnClickListener()      
        {
            @Override
            public void onClick(View v) {
                Log.e("", "Start Lap Button Clicked!");
            }
        }
        view.setTag(viewHolderItem);
    } else {
        // Use already initialized variables
        viewHolderItem = (ViewHolderItem) view.getTag();
    }
}

这篇关于Android的更新列表视图不断，但保留的onClick功能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！