Android:how to get any KeyPress event with example? Android:how to get any KeyPress event with example? android android

Android:how to get any KeyPress event with example?


Answer to this question should be twofold. It is determined by the way how the key was generated. If it was press on the hardware key, then both approaches described below are valid. If it was press on the software key, then it depends on actual context.

1.) If key was result of the pressing on the soft keyboard that was obtained by long press on the Menu key:

You need to carefully override the following function:

@Override public boolean onKeyDown(int keyCode, KeyEvent event) {    switch (keyCode) {        case KeyEvent.KEYCODE_A:        {            //your Action code            return true;        }    }    return super.onKeyDown(keyCode, event);}

2.) If your activity contains EditText, and softkeyboard was obtained from it, then first approach does not work because key event was already consumed by EditText. You need to use text changed Listener:

mMyEditText.addTextChangedListener(new TextWatcher(){    public void afterTextChanged(Editable s)     {    }    public void beforeTextChanged(CharSequence s, int start, int count, int after)     {        /*This method is called to notify you that, within s, the count characters beginning at start are about to be replaced by new text with length after. It is an error to attempt to make changes to s from this callback.*/     }    public void onTextChanged(CharSequence s, int start, int before, int count)     {    });


Zelimir code works if your ssoo version is up to 2.3If you have this code running in 2.3 it will not works at all, the way to control the event keys in all ssoo version is with dispatchKeyEvent()

@Override    public boolean dispatchKeyEvent(KeyEvent event) {        Log.d("hello", String.valueOf(event.getKeyCode()));        return super.dispatchKeyEvent(event);    }

With this, you can control the key pressed in a webview or wherever you are. The only bug is that you can not control the "action button" ... don't know why.


Try this out, this works perfectly well.

@Overridepublic boolean onKeyUp (int keyCode, KeyEvent event){char c = (char) event.getUnicodeChar();//Do something....return super.onKeyUp(keyCode, event);}