是否可以连续按下按键？
我正在使用keyCommands：截取在外部键盘上按下的箭头键,但是每次只能收到1个呼叫.只要按住键,我会希望每X毫秒多次拨打一次电话,或者在按下该键并释放该键时拨打电话.
这是我的代码：
- (NSArray *)keyCommands
{
UIKeyCommand *upArrow = [UIKeyCommand keyCommandWithInput:UIKeyInputUpArrow
modifierFlags:0
action:@selector(upArrow:)];
UIKeyCommand *downArrow = [UIKeyCommand keyCommandWithInput:UIKeyInputDownArrow
modifierFlags:0
action:@selector(downArrow:)];
UIKeyCommand *leftArrow = [UIKeyCommand keyCommandWithInput:UIKeyInputLeftArrow
modifierFlags:0
action:@selector(leftArrow:)];
UIKeyCommand *rightArrow = [UIKeyCommand keyCommandWithInput:UIKeyInputRightArrow
modifierFlags:0
action:@selector(rightArrow:)];
UIKeyCommand *leftArrowCmd = [UIKeyCommand keyCommandWithInput:UIKeyInputLeftArrow
modifierFlags:UIKeyModifierCommand
action:@selector(leftArrowCmd:)];
UIKeyCommand *rightArrowCmd = [UIKeyCommand keyCommandWithInput:UIKeyInputRightArrow
modifierFlags:UIKeyModifierCommand
action:@selector(rightArrowCmd:)];
UIKeyCommand *lCmd = [UIKeyCommand keyCommandWithInput:@"l"
modifierFlags:UIKeyModifierCommand
action:@selector(lCmd:)];
UIKeyCommand *rCmd = [UIKeyCommand keyCommandWithInput:@"r"
modifierFlags:UIKeyModifierCommand
action:@selector(rCmd:)];
UIKeyCommand *mCmd = [UIKeyCommand keyCommandWithInput:@"m"
modifierFlags:UIKeyModifierCommand
action:@selector(mCmd:)];
return @[upArrow,downArrow,leftArrow,rightArrow,leftArrowCmd,rightArrowCmd,lCmd,rCmd,mCmd];
}
解决方法
似乎这在iOS 7中确实是不可能的.