我尝试使用<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width,
initial-scale=1.0">
<meta http-equiv="X-UA_Compatible" content="ie=edge">
<title> Test</title>
<script >
/*to put the user input in div tag*/
function myFunction(){
const userInput=document.querySelector("#firstinput");
const output=document.querySelector("#result");
output.innerHTML=userInput.value;//this parte overwrite the first input
}
</script>
</head>
<body>
<body>
<div id="container">
<div id="values">
<input id="firstinput" type="text" placeholder="Enter 2 positive figures">
<button id="submit" onclick="myFunction()">Submit</button>
</div>
<div id="result"></div>
</div>
</body>
</html>在searchview上实现RecyclerView。一切顺利，直到我尝试删除EditText上的所有文本为止。我的应用程序停止工作。
我尝试为Text为null时应用必须执行的操作添加一些条件：
FragmentHome.java
EditTextAdapter.Java
edSearch.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
adapter.getFilter().filter(s);
}
});