由于系统自带AlertView带输入框样式不太美观，决定自定义类似系统带有输入框样式AlertView，可根据需求自行修改样式，使用极其方便，同时已经做好了键盘事件处理。
代码直接拷贝可用：
#import
typedefvoid(^ClickBlock)(NSString* inputText);
typedefvoid(^ReloadBlock)();
@interfaceInputAlertView :UIView
+ (InputAlertView*)sharedAlertView;
- (void)showAlertViewTitle:(NSString*)title withConfirmAction:(ClickBlock)confirmBlock;
@property(nonatomic,strong)NSString*placeholder;
@end
#import "InputAlertView.h"
#define ScreenWidth[[UIScreen mainScreen] bounds].size.width
#define ScreenHeight [[UIScreen mainScreen] bounds].size.height
#define OnePixel(1./[UIScreen mainScreen].scale)
#define animateTime0.35f
#define UIColorFromHEX(hexValue, alphaValue) \
[UIColor colorWithRed:((float)((hexValue &0xFF0000) >>16))/255.0\
green:((float)((hexValue &0x00FF00) >>8))/255.0\
blue:((float)(hexValue &0x0000FF))/255.0\
alpha:alphaValue]
@interfaceInputAlertView()
@property(nonatomic,assign)BOOLnotifiKeyboardHide;
@property(nonatomic,strong)UITextField* inputTextField;//输入框
@property(nonatomic,strong)UIView* alertBackgroundView;
@property(nonatomic,strong)UIView* operateView;//操作视图
@property(nonatomic,strong)UILabel* titleLabel;//标题
@property(nonatomic,copy)ClickBlockconfirmBlock;
@property(nonatomic,copy)ReloadBlockreloadBlock;
@end
@implementationInputAlertView
+ (InputAlertView*)sharedAlertView
{
staticdispatch_once_tonce;
staticInputAlertView* _alertView =nil;
dispatch_once(&once, ^{
if(_alertView ==nil) {
_alertView = [[selfalloc]init];
}
});
return_alertView;
}
#pragma mark - 创建UI
- (void)showAlertViewTitle:(NSString*)title withConfirmAction:(ClickBlock)confirmBlock
{
_notifiKeyboardHide=NO;
[[NSNotificationCenterdefaultCenter]addObserver:self
selector:@selector(keyboardWillShow:)
name:UIKeyboardWillShowNotification
object:nil];
/**
*背景视图
*/
_alertBackgroundView= [[UIViewalloc]initWithFrame:CGRectMake(0,0,ScreenWidth,ScreenHeight)];
_alertBackgroundView.backgroundColor=UIColorFromHEX(0x000000,0.7);
[[UIApplicationsharedApplication].keyWindowaddSubview:_alertBackgroundView];
_alertBackgroundView.alpha=0;
[UIViewanimateWithDuration:animateTimeanimations:^{
_alertBackgroundView.alpha=1;
}];
/**
*操作区背景
*/
_operateView= [[UIViewalloc]init];
_operateView.center=CGPointMake(ScreenWidth/2.,ScreenHeight/2.);
_operateView.bounds=CGRectMake(0,0,ScreenWidth-32,170);
_operateView.backgroundColor= [UIColorwhiteColor];
_operateView.layer.cornerRadius=6;
_operateView.clipsToBounds=YES;
[_alertBackgroundViewaddSubview:_operateView];
[selfshakeToShow:_operateView];
/**
*按钮
*/
UIButton* cancelBtn = [selfcreateButtonWithFrame:CGRectMake(0,CGRectGetHeight(_operateView.frame) -48,_operateView.frame.size.width/2.,48)title:@"取消"andAction:@selector(removeAlertView)];
[cancelBtnsetTitleColor:[UIColorlightGrayColor]forState:UIControlStateNormal];
//[cancelBtn setBackgroundImage:[self imageWithColor:UIColorFromHEX(0xffffff, 1) andSize:cancelBtn.bounds.size] forState:UIControlStateNormal];
self.confirmBlock= confirmBlock;
UIButton* confirmBtn = [selfcreateButtonWithFrame:CGRectMake(_operateView.frame.size.width/2.,CGRectGetHeight(_operateView.frame) -48,_operateView.frame.size.width/2.,48)title:@"确定"andAction:@selector(clickAction:)];
[confirmBtnsetTitleColor:[UIColorredColor]forState:UIControlStateNormal];
//[confirmBtn setBackgroundImage:[self imageWithColor:UIColorFromHEX(0xffffff, 1) andSize:cancelBtn.bounds.size] forState:UIControlStateNormal];
/**
*分割线
*/
UILabel* horLine = [[UILabelalloc]initWithFrame:CGRectMake(0,CGRectGetHeight(_operateView.frame) -48-OnePixel,_operateView.frame.size.width,OnePixel)];
horLine.backgroundColor=UIColorFromHEX(0xcccccc,1);
[_operateViewaddSubview:horLine];
UILabel* verLine = [[UILabelalloc]initWithFrame:CGRectMake(_operateView.frame.size.width/2.-OnePixel/2.,CGRectGetHeight(_operateView.frame) -48-OnePixel,OnePixel,48)];
verLine.backgroundColor=UIColorFromHEX(0xcccccc,1);
[_operateViewaddSubview:verLine];
/**
*标题
*/
_titleLabel= [[UILabelalloc]initWithFrame:CGRectMake(0,0,_operateView.frame.size.width,48)];
_titleLabel.font= [UIFontsystemFontOfSize:18];
_titleLabel.textColor= [UIColorredColor];
_titleLabel.text= title;
_titleLabel.textAlignment=NSTextAlignmentCenter;
[_operateViewaddSubview:_titleLabel];
/**
*分割线1
*/
UILabel* horLine1 = [[UILabelalloc]initWithFrame:CGRectMake(0,CGRectGetHeight(_titleLabel.frame) -OnePixel,_operateView.frame.size.width,OnePixel)];
horLine1.backgroundColor=UIColorFromHEX(0xcccccc,1);
[_operateViewaddSubview:horLine1];
/**
*输入框背景
*/
UIView* inputBkView = [[UIViewalloc]init];
//inputBkView.layer.borderColor = UIColorFromHEX(0xcccccc, 1).CGColor;
//inputBkView.layer.borderWidth = 1;
inputBkView.bounds=CGRectMake(0,0,CGRectGetWidth(_operateView.frame) -20,48);
inputBkView.center=CGPointMake(CGRectGetMidX(_operateView.bounds),CGRectGetMidY(_operateView.bounds));
[_operateViewaddSubview:inputBkView];
/**
*输入框
*/
_inputTextField= [[UITextFieldalloc]initWithFrame:CGRectMake(16,0,CGRectGetWidth(inputBkView.bounds) -10,CGRectGetHeight(inputBkView.bounds))];
_inputTextField.delegate=self;
_inputTextField.keyboardType=UIKeyboardTypeDefault;
_inputTextField.returnKeyType=UIReturnKeyDone;
_inputTextField.font= [UIFontsystemFontOfSize:16];
_inputTextField.attributedPlaceholder= [[NSAttributedStringalloc]initWithString:@"在此输入内容"attributes:@{NSForegroundColorAttributeName:UIColorFromHEX(0xcccccc,1),NSFontAttributeName:[UIFontsystemFontOfSize:16]}];
_inputTextField.textColor=UIColorFromHEX(0x333333,1);
_inputTextField.clearButtonMode=UITextFieldViewModeWhileEditing;
[inputBkViewaddSubview:_inputTextField];
[_inputTextFieldbecomeFirstResponder];
}
- (void)setPlaceholder:(NSString*)placeholder {
_placeholder= placeholder;
_inputTextField.attributedPlaceholder= [[NSAttributedStringalloc]initWithString:placeholderattributes:@{NSForegroundColorAttributeName:UIColorFromHEX(0xcccccc,1),NSFontAttributeName:[UIFontsystemFontOfSize:16]}];
}
#pragma mark - 移除视图
- (void)removeAlertView
{
if([_inputTextFieldisFirstResponder]) {
[_inputTextFieldresignFirstResponder];
}
//退出
[UIViewanimateWithDuration:animateTimeanimations:^{
_alertBackgroundView.alpha=0;
}completion:^(BOOLfinished) {
[[NSNotificationCenterdefaultCenter]removeObserver:selfname:UIKeyboardWillShowNotificationobject:nil];
if(_notifiKeyboardHide) {
[[NSNotificationCenterdefaultCenter]removeObserver:selfname:UIKeyboardWillHideNotificationobject:nil];
}
[self.alertBackgroundViewremoveFromSuperview];
self.alertBackgroundView=nil;
self.operateView=nil;
}];
}
#pragma mark - 创建按钮
- (UIButton*)createButtonWithFrame:(CGRect)frame title:(NSString*)title andAction:(SEL)action
{
UIButton* btn = [UIButtonbuttonWithType:UIButtonTypeCustom];
btn.frame= frame;
[btnsetTitleColor:UIColorFromHEX(0x333333,1)forState:UIControlStateNormal];
[btnsetTitle:titleforState:UIControlStateNormal];
btn.titleLabel.font= [UIFontboldSystemFontOfSize:16];
[btnaddTarget:selfaction:actionforControlEvents:UIControlEventTouchUpInside];
[_operateViewaddSubview:btn];
returnbtn;
}
- (void)clickAction:(UIButton*)sender
{
if(self.confirmBlock) {
self.confirmBlock(_inputTextField.text);
}
[selfremoveAlertView];
}
- (void)reloadImageAction:(UIButton*)sender
{
if(self.reloadBlock) {
self.reloadBlock();
}
}
#pragma mark - 监听键盘弹起，操作框动画
///键盘弹起，页面动画，监听
- (void)keyboardWillShow:(NSNotification*)notification
{
// 键盘的frame
CGRectkeyboardRect = [notification.userInfo[UIKeyboardFrameEndUserInfoKey]CGRectValue];
CGFloatkeyboardHeight = keyboardRect.size.height;
CGFloatkeyboardOriginY =ScreenHeight- keyboardHeight;
CGFloatoperateMaxY =ScreenHeight/2.+_operateView.bounds.size.height/2.+16;
//DLog(@"--- %lf %lf", keyboardOriginY, operateMaxY);
if(operateMaxY >= keyboardOriginY) {
[UIViewanimateWithDuration:0.25animations:^{
CGRectrect =_operateView.frame;
rect.origin.y= keyboardOriginY - rect.size.height-16;
_operateView.frame= rect;
}completion:^(BOOLfinished) {
}];
_notifiKeyboardHide=YES;
[[NSNotificationCenterdefaultCenter]addObserver:self
selector:@selector(keyboardWillHide:)
name:UIKeyboardWillHideNotification
object:nil];
}
else{
_notifiKeyboardHide=NO;
}
}
///键盘收起，页面动画，监听
- (void)keyboardWillHide:(NSNotification*)notification
{
[UIViewanimateWithDuration:0.25animations:^{
CGRectrect =_operateView.frame;
rect.origin.y= (ScreenHeight- rect.size.height)/2.;
_operateView.frame= rect;
}completion:^(BOOLfinished) {
}];
}
#pragma mark - 输入框代理
- (BOOL)textFieldShouldReturn:(UITextField*)textField
{
[textFieldresignFirstResponder];
returnYES;
}
#pragma mark - 颜色转换为图片
- (UIImage*)imageWithColor:(UIColor*)color andSize:(CGSize)aSize
{
CGRectrect =CGRectMake(0.0f,0.0f, aSize.width, aSize.height);
UIGraphicsBeginImageContext(rect.size);
CGContextRefcontext =UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [colorCGColor]);
CGContextFillRect(context, rect);
UIImage*image =UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
returnimage;
}
#pragma mark - 弹性震颤动画
- (void)shakeToShow:(UIView*)aView
{
CAKeyframeAnimation* popAnimation = [CAKeyframeAnimationanimationWithKeyPath:@"transform"];
popAnimation.duration=0.35;
popAnimation.values=@[[NSValuevalueWithCATransform3D:CATransform3DMakeScale(0.01f,0.01f,1.0f)],
[NSValuevalueWithCATransform3D:CATransform3DMakeScale(1.05f,1.05f,1.0f)],
[NSValuevalueWithCATransform3D:CATransform3DIdentity]];
popAnimation.keyTimes=@[@0.0f,@0.5f,/*@0.75f,*/@0.8f];
popAnimation.timingFunctions=@[[CAMediaTimingFunctionfunctionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunctionfunctionWithName:kCAMediaTimingFunctionEaseInEaseOut]];
[aView.layeraddAnimation:popAnimationforKey:nil];
}
@end
