英文:
How to add checkbox on all the listView items after having a long item click? Android Java
问题
我想在我的项目中添加一个功能，即如果用户点击ListView中的某个项目，那么将会出现一个复选框，允许用户一次性删除一个或多个项目。类似于三星笔记(Samsung Notes)，当您想要删除笔记、文件夹等内容时。然而，这个概念对我来说完全陌生，目前我不知道从何开始，也不知道应该查找什么主题/资源/示例代码。此外，我有一个自定义的Array Adapter类，我用它来使它与我的ListView配合工作，但我了解到您只需要一个Array Adapter类就可以使其工作，这让我很困惑，因为我不知道从何处开始进一步操作。任何帮助都将是非常棒的！
以下是我目前拥有的Array Adapter：
//想要创建自己的自定义ArrayAdapter。将扩展基类ArrayAdapter并保存我们的WordFolder对象public class WordAdapter extends ArrayAdapter<WordFolder> {//构造函数 - 它接受上下文和单词列表WordAdapter(Context context, ArrayList<WordFolder> word){super(context, 0, word);}@Overridepublic View getView(int position, View convertView, ViewGroup parent){View listItemView = convertView;if(listItemView == null){listItemView = LayoutInflater.from(getContext()).inflate(R.layout.folder_view, parent, false);}//获取当前单词WordFolder currentWord = getItem(position);//将3个文本视图设置为与我们的word_folder.xml相匹配TextView date_created = (TextView) listItemView.findViewById(R.id.date_created);TextView title = (TextView) listItemView.findViewById(R.id.title);TextView desc = (TextView) listItemView.findViewById(R.id.desc);//使用setText获取文本并将其设置到TextView中date_created.setText(currentWord.getDateCreated());title.setText(currentWord.getTitle());desc.setText(currentWord.getTitleDesc());return listItemView;}}```<details><summary>英文:</summary>I want to add a feature on my project where if the user clicks one of the items on the listView then a checkbox would appear allowing the user to delete 1 or many items at once. Similar to Samsung Notes when you want to delete notes and or folders, etc. However, this concept is completely foreign to me and currently, I don't know where to begin to start this or what topic/resource/sample code I should look for. Also, I have a custom Array Adapter class that I used to order to work with my ListView but it came to my knowledge that you only need 1 array adapter class to make this work which made me confused since I don't know where to begin to manipulate it even further. Any help would be amazing!Here is my Array Adapter that I have at the moment
//want to create our own custom ArrayAdapter. Going to extends the base class ArrayAdapter and hold our
//Word object
public class WordAdapter extends ArrayAdapter<WordFolder> {
//constructor - it takes the context and the list of words
WordAdapter(Context context, ArrayList<WordFolder> word){
super(context, 0, word);
}
@Overridepublic View getView(int position, View convertView, ViewGroup parent){View listItemView = convertView;if(listItemView == null){listItemView = LayoutInflater.from(getContext()).inflate(R.layout.folder_view, parent, false);}//Getting the current wordWordFolder currentWord = getItem(position);//making the 3 text view to match our word_folder.xmlTextView date_created = (TextView) listItemView.findViewById(R.id.date_created);TextView title = (TextView) listItemView.findViewById(R.id.title);TextView desc = (TextView) listItemView.findViewById(R.id.desc);//using the setText to get the text and set it in the textViewdate_created.setText(currentWord.getDateCreated());title.setText(currentWord.getTitle());desc.setText(currentWord.getTitleDesc());return listItemView;}
}```
答案1
得分: 0
在R.layout.folder_view中添加一个元素，并将其设置为不可见或隐藏。在长按事件（OnLongClick）时使它们可见。
英文:
In R.layout.folder_view add one and make it invisible or gone. OnLongClick make them Visible.
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论