question: private boolean processKeyUp ( int keyCode ) { if ( keyCode == KeyEvent . KEYCODE_DEL ) { if ( mInKbMode ) { if ( ! mTypedTimes . isEmpty ( ) ) { int deleted = deleteLastTypedKey ( ) ; String deletedKeyStr ; if ( deleted == getAmOrPmKeyCode ( AM ) ) { deletedKeyStr = mAmText ; } else if ( deleted == getAmOrPmKeyCode ( PM ) ) { deletedKeyStr = mPmText ; } else { deletedKeyStr = String . format ( "%d" , getValFromKeyCode ( deleted ) ) ; } ViewCompatUtils . announceForAccessibility ( mDelegator , String . format ( mDeletedKeyFormat , deletedKeyStr ) ) ; updateDisplay ( true ) ; } } } else if ( keyCode == KeyEvent . KEYCODE_0 || keyCode == KeyEvent . KEYCODE_1 || keyCode == KeyEvent . KEYCODE_2 || keyCode == KeyEvent . KEYCODE_3 || keyCode == KeyEvent . KEYCODE_4 || keyCode == KeyEvent . KEYCODE_5 || keyCode == KeyEvent . KEYCODE_6 || keyCode == KeyEvent . KEYCODE_7 || keyCode == KeyEvent . KEYCODE_8 || keyCode == KeyEvent . KEYCODE_9 || ( ! mIs24HourView && ( keyCode == getAmOrPmKeyCode ( AM ) || keyCode == getAmOrPmKeyCode ( PM ) ) ) ) { if ( ! mInKbMode ) { if ( mRadialTimePickerView == null ) { Log . e ( TAG , "Unable to initiate keyboard mode, TimePicker was null." ) ; return true ; } mTypedTimes . clear ( ) ; tryStartingKbMode ( keyCode ) ; return true ; } if ( addKeyIfLegal ( keyCode ) ) { updateDisplay ( false ) ; } return true ; } return false ; }
target:  For keyboard mode, processes key events.