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我想攔截硬件鍵盤上的鍵盤事件。例如,當用戶按下「a」時,我不希望它被寫入EditText中。因此,當按下並釋放「a」鍵時,我會返回true,但無論如何它都會寫入EditText。哪裏不對?Android:攔截onKeyDown()和onKeyUp()
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_A:
//Here it logs correct, but the letter appears in the EditText anyway
Log.d("Textboard","A");
return true;
default:
return super.onKeyDown(keyCode, event);
}
}
@Override
public boolean onKeyUp(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_A:
//Here it logs correct, but the letter appears in the EditText anyway
Log.d("Textboard","A");
return true;
default:
return super.onKeyUp(keyCode, event);
}
}