iOS开发以及好多年了,但是对于键盘处理从未认真的想一个简单的办法来处理,网上有大把的方法,有些写的并不是那么详细,实际使用起来会出各种幺蛾子,现在找到一个简单的模式,把这些代码考进textField所在的ViewController即可,因为时间关系,只做了textField的简单归纳,当然对于textView也是有效的,废话不多说,开始吧:
1,当然是要注册键盘的通知方法
[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(keyboardWillChange:)name:UIKeyboardWillChangeFrameNotificationobject:nil];
[[NSNotificationCenterdefaultCenter]addObserver:selfselector:@selector(keyboardWillHide:)name:UIKeyboardWillHideNotificationobject:nil];
2,不要忘了取消注册通知,否则你会发现很蛋疼的,键盘会错乱
- (void)dealloc{
[[NSNotificationCenterdefaultCenter]removeObserver:selfname:UIKeyboardWillChangeFrameNotificationobject:nil];
[[NSNotificationCenterdefaultCenter]removeObserver:selfname:UIKeyboardWillHideNotificationobject:nil];
}
3关键的来了,通知对应的方法
3.1键盘弹起时,将被遮挡区域露出来,我们唯一需要做的一件事就是将当前控制器内的所有textField放进数组
- (void)keyboardWillChange:(NSNotification*) notification{
//获取键盘通知信息
NSDictionary*info = [notificationuserInfo];
//获取键盘弹出时长
CGFloatduration = [[infoobjectForKey:UIKeyboardAnimationDurationUserInfoKey]floatValue];
//获取键盘Rect
CGRectendKeyboardRect = [[infoobjectForKey:UIKeyboardFrameEndUserInfoKey]CGRectValue];
CGSizekeyboardSize = endKeyboardRect.size;
//self.view动画
[UIViewanimateWithDuration:durationanimations:^{
//键盘的高度
CGFloatkeyBoardToBottom = keyboardSize.height;
//获取当前输入框控件
UITextField*currentTF;
//这个里面放入当前控制器对应的textFIeld数组即可,就是这个数组
for(UITextField*TFin@[_oldPassWordTF,_nowPassWordTF,_confirmPassWordTF]) {
if([TFisFirstResponder]) {
currentTF = TF;
};
}
//控件底部到self.view底部的距离
CGFloatviewToBottom;
//定义输入框与键盘距离
CGFloatspaceHeight =10;
viewToBottom =self.view.frame.size.height-CGRectGetMaxY(currentTF.frame) - spaceHeight;
//键盘遮挡区域高度
CGFloatoffSet = viewToBottom -keyBoardToBottom;
if(offSet <0) {
//导航条高度
CGFloatnavHeight =64;
//self.view应该上移的高度
self.view.frame=CGRectMake(0, offSet + navHeight,self.view.bounds.size.width,self.view.bounds.size.height);
}
}completion:^(BOOLfinished) {
}];
}
3.2取消键盘时,self.view恢复原样
- (void)keyboardWillHide:(NSNotification*) notification{
//获取键盘通知信息
NSDictionary*info = [notificationuserInfo];
//获取键盘弹出时长
CGFloatduration = [[infoobjectForKey:UIKeyboardAnimationDurationUserInfoKey]floatValue];
[UIViewanimateWithDuration:durationanimations:^{
CGFloatnavHeight =64;
self.view.frame=CGRectMake(0, navHeight,self.view.bounds.size.width,self.view.bounds.size.height);
}completion:^(BOOLfinished) {
}];
}
时间比较紧,有时间再弄个通用的,如果有更好的想法或有不足之处可联系我,791903178qq,谢谢