I've attached an OnKeyListener to an EditText. I've overrode the onKey handler to capture a KeyEvent.
When a user hits the enter key (either their computer enter key while using the emulator, or the hardware enter key on their phone with a hardware keyboard), the onKey handler gets executed twice. Both executions have the keyCode 66.
Why is this happening?
I want my screen so when the user hits the enter key, a search is performed. Because of what is happening, the search is needlessly happening twice.
My method looks like this:
mFilter.setOnKeyListener(new View.OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_ENTER) {
// perform search
return true;
}
return false;
}
});
Ahhhh
I think this is happening for key up and key down?
if (keyCode == KeyEvent.KEYCODE_ENTER && event.getAction()==0) {
Try this:
mFilter.setOnKeyListener(new View.OnKeyListener() {
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
if (keyCode == KeyEvent.KEYCODE_ENTER) {
// perform search
return true;
}
}
return false;
}
});
you can filter like this :
object.setOnKeyListener(new OnKeyListener() {
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_ENTER && event.getAction() == KeyEvent.ACTION_UP) {
// do stuff
return true;
}
return false;
}
});
idem when you push the key with KeyEvent.ACTION_DOWN
I had the same issue and the answers above helped me but I am using Xamarin.Android (c#) so it is slightly different syntax.. Here is what worked for me:
MyStringTextBox.KeyPressed += OnEnterKeyPressed;
protected void OnEnterKeyPressed(object sender, View.KeyEventArgs e)
{
if (e.KeyCode == Keycode.Enter && e.Event.Action == KeyEventActions.Up)
{
DoSomething(this, EventArgs.Empty);
}
else
{
e.Handled = false;
}
}
This way, the DoSomething() would only be called on hitting Enter Key (Up) only and thus would be fired once. Works and tested on Xamarin.Android
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