我想知道是否有一种方法来处理用户在输入EditText时按下Enter,就像onSubmit HTML事件。
还想知道是否有一种方法来操纵虚拟键盘,以这样的方式,“完成”按钮被标记为其他的东西(例如“Go”),并在单击时执行特定的动作(再次,像onSubmit)。
我想知道是否有一种方法来处理用户在输入EditText时按下Enter,就像onSubmit HTML事件。
还想知道是否有一种方法来操纵虚拟键盘,以这样的方式,“完成”按钮被标记为其他的东西(例如“Go”),并在单击时执行特定的动作(再次,像onSubmit)。
当前回答
在编辑器中键入这段代码,以便它可以导入必要的模块。
query.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int actionId, KeyEvent keyEvent) {
if(actionId == EditorInfo.IME_ACTION_DONE
|| keyEvent.getAction() == KeyEvent.ACTION_DOWN
|| keyEvent.getAction() == KeyEvent.KEYCODE_ENTER) {
// Put your function here ---!
return true;
}
return false;
}
});
其他回答
在编辑器中键入这段代码,以便它可以导入必要的模块。
query.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView textView, int actionId, KeyEvent keyEvent) {
if(actionId == EditorInfo.IME_ACTION_DONE
|| keyEvent.getAction() == KeyEvent.ACTION_DOWN
|| keyEvent.getAction() == KeyEvent.KEYCODE_ENTER) {
// Put your function here ---!
return true;
}
return false;
}
});
如果使用DataBinding,请参见https://stackoverflow.com/a/52902266/2914140和https://stackoverflow.com/a/67933283/2914140。
Bindings.kt:
@BindingAdapter("onEditorEnterAction")
fun EditText.onEditorEnterAction(callback: OnActionListener?) {
if (callback == null) setOnEditorActionListener(null)
else setOnEditorActionListener { v, actionId, event ->
val imeAction = when (actionId) {
EditorInfo.IME_ACTION_DONE,
EditorInfo.IME_ACTION_SEND,
EditorInfo.IME_ACTION_GO -> true
else -> false
}
val keydownEvent = event?.keyCode == KeyEvent.KEYCODE_ENTER
&& event.action == KeyEvent.ACTION_DOWN
if (imeAction or keydownEvent) {
callback.enterPressed()
return@setOnEditorActionListener true
}
return@setOnEditorActionListener false
}
}
interface OnActionListener {
fun enterPressed()
}
layout.xml:
<data>
<variable
name="viewModel"
type="YourViewModel" />
</data>
<EditText
android:imeOptions="actionDone|actionSend|actionGo"
android:singleLine="true"
android:text="@={viewModel.message}"
app:onEditorEnterAction="@{() -> viewModel.send()}" />
完美的工作
public class MainActivity extends AppCompatActivity {
TextView t;
Button b;
EditText e;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b = (Button) findViewById(R.id.b);
e = (EditText) findViewById(R.id.e);
e.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
if (before == 0 && count == 1 && s.charAt(start) == '\n') {
b.performClick();
e.getText().replace(start, start + 1, ""); //remove the <enter>
}
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void afterTextChanged(Editable s) {}
});
b.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
b.setText("ok");
}
});
}
}
完美的工作
password.setOnEditorActionListener(new TextView.OnEditorActionListener() {
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if(event != null && event.getKeyCode() == KeyEvent.KEYCODE_ENTER && event.getAction() == KeyEvent.ACTION_DOWN) {
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_IMPLICIT, 0);
submit.performClick();
return true;
}
return false;
}
});
对我来说很好 另外隐藏键盘
在xml中,将imeOptions属性添加到editText中
<EditText
android:id="@+id/edittext_additem"
...
android:imeOptions="actionDone"
/>
然后,在Java代码中,将OnEditorActionListener添加到相同的EditText中
mAddItemEditText.setOnEditorActionListener(new TextView.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if(actionId == EditorInfo.IME_ACTION_DONE){
//do stuff
return true;
}
return false;
}
});
下面是解释 imeOptions=actionDone将“actionDone”分配给EnterKey。键盘上的EnterKey将从“Enter”变为“Done”。因此,当按下回车键时,它将触发这个动作,因此您将处理它。