java - 如何在android中以编程方式使用KEY_DEL仅删除带有@的特定单词，如 "Whats App"

Question

这是我的代码，我想使用@删除来自RecyclerView的单词

例如；

我只想删除@Tapan整个单词；

editText.setOnKeyListener(new OnKeyListener() {                 
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
    //You can identify which key pressed buy checking keyCode value with KeyEvent.KEYCODE_
     if(keyCode == KeyEvent.KEYCODE_DEL){  

     //here how can I delete whole word with @ value

}
return false;       
    }
});

Answer 1

请尝试这个示例:

      String str="@Hello!!! Ple@ase try the @Example for a @solution";
    //Split by space
    String arrStr[]=str.split(" ");
    ArrayList<String>arrList=new ArrayList<>();
    for(int i=0;i<arrStr.length;i++)
    {
        //check first character of string
        if(arrStr[i].charAt(0)=='@')
        {
            //if start with @ remove
           arrList.remove(arrStr[i]);
        }
        else
        {
            arrList.add(arrStr[i]);
        }
    }
    Iterator it=arrList.iterator();
    while (it.hasNext())
    {
        System.out.print(it.next()+" ");
    }

当您输入**@Hello!!! Ple@ase 尝试将 @Example for a @solution** 放入此示例代码中，您将得到 **Ple@ase try the for a** 作为输出。