How to start new Activity using hard Menu button?

Question

Here is an example of the code, which just doesn't work. I added this method in MainActivity

@Override
public boolean onKeyLongPress(int keyCode, KeyEvent event) {
    Intent intent = new Intent(this, PrefActivity.class);
    if (keyCode == KeyEvent.KEYCODE_MENU) {
        startActivity(intent);
        return true;
    }
    return super.onKeyLongPress(keyCode, event);
}

giving a shot it's the first argument of the Intent constructor, 'this' try getting a context from your activity ( Context cont = this; and creating the intent like new Intent(cont, PrefActivity.class) — FrancescoC, Mar 18 '16 at 08:14
The error reason was beyond this method. I handled this. This method simply doesn't work. — Robert, Mar 18 '16 at 17:16
@cricket_007, could you please, upvote my question. I edited it. The question is absolutely different from crashing. — Robert, Mar 21 '16 at 15:07
Why would I upvote? You still have not been specific as to **what** "doesn't work". What do you *expect* to happen? — OneCricketeer, Mar 21 '16 at 15:14
@cricket_007. The question is "How to start new Activity using hard Menu button?" And a code, which I posted doesn't work. I can't call Preference Activity using hard Menu button. — Robert, Mar 21 '16 at 15:19
I understand what the question is. Have you tried holding the button down? Because you implemented `onKeyLongPress`, not `onKeyDown` — OneCricketeer, Mar 21 '16 at 15:27

score 0 · Accepted Answer · edited May 23 '17 at 12:16

If you just want to click the button without holding it down, you can use onKeyUp.

@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
    switch (keyCode) {
        case KeyEvent.KEYCODE_MENU:
            startActivity(new Intent(this, LoginActivity.class));
            return true;
    }
    return super.onKeyUp(keyCode, event);
}

If you would like to handle onKeyLongPress, then you can read more at onKeyDown and onKeyLongPress

The reason it doesn't work is your event is being consumed by onKeyDown, which is continuously fired until you let go of the key and onKeyLongPress is never called.

score -3 · Answer 2 · edited Mar 18 '16 at 08:28

-3

@Override
public boolean onKeyLongPress(int keyCode, KeyEvent event) {

if (keyCode == KeyEvent.KEYCODE_MENU) {
Intent intent = new Intent(getApplicationContext(), PrefActivity.class);
    startActivity(intent);
    return true;
}
return super.onKeyLongPress(keyCode, event);
}

Try it!

edited Mar 18 '16 at 08:28

Amit Vaghela

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answered Mar 18 '16 at 08:14

Thang BA

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replace this to getApplicationContext() . try it – Thang BA Mar 18 '16 at 08:26
That shouldn't change anything if `this` is a Context like an Activity anyways – OneCricketeer Mar 18 '16 at 08:29

How to start new Activity using hard Menu button?

2 Answers2