点击任意View弹出Picker

在做项目的过程中,会有些点击某个View弹出选择器(UIPickerView)的需求(如同下图),如果这个View是UITextField或者UITextView这样可编辑的View还好说,直接就可以呼出键盘,然后直接操作inputView就好,那么蛋疼的来了。。点击非可编辑文字的View呼出选择器(UIPickerView)怎么办?下面就分享下我是如何解决这个问题的。。


点击任意View弹出Picker_第1张图片
图示--文章说的就是它

方案1(比较简单,相对比较low,但可定制性较强):

自定义一个View,最下面放一个UIPickerView,View的上面放取消和完成按钮,点击View的时候写个UIView动画弹出来就可以了,简单到不行,定制性也较强。

方案2(这篇文章主要介绍这种方法):

@property(strong,nonatomic,readwrite)UIToolbar*inputAccessoryView;

@property(strong,nonatomic,readwrite)UIPickerView*inputView;

首先要让你定制的这个View的inputAccessoryView,和inputView这两个属性可读可写,如果不这样做你是没有权限来操作它们的。

下一步,重写 -(UIToolbar*)inputAccessoryView 、 -(UIPickerView*)inputView 和 - (BOOL)canBecomeFirstResponder方法:

-(UIToolbar*)inputAccessoryView{

if(!_inputAccessoryView){

UIToolbar*toolBar = [[UIToolbaralloc]initWithFrame:CGRectMake(0, 0,SCREEN_WIDTH, 44)];

toolBar.tintColor=SYSTEM_COLOR;

toolBar.backgroundColor= [UIColorcolorWithHexStr:@"$f1f1f1"];

UIBarButtonItem*left = [[UIBarButtonItemalloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCanceltarget:selfaction:@selector(cancel)];

UIBarButtonItem*fix = [[UIBarButtonItemalloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpacetarget:selfaction:@selector(fix)];

UIBarButtonItem*right = [[UIBarButtonItemalloc]initWithBarButtonSystemItem:UIBarButtonSystemItemDonetarget:selfaction:@selector(done)];

toolBar.items= [NSArrayarrayWithObjects:left,fix,right,nil];

returntoolBar;

}

return_inputAccessoryView;

}

-(UIPickerView*)inputView

{

if(!_inputView){

_inputView= [[UIPickerViewalloc]init];

_inputView.backgroundColor= [UIColorcolorWithHexStr:@"#f1f1f1"];

_inputView.bounds=CGRectMake(0, 0,SCREEN_WIDTH,SCREEN_HEIGHT/3);

_inputView.delegate=self;

_inputView.dataSource=self;

_inputView.showsSelectionIndicator=YES;

}

return_inputView;

}

-(void)done

{

[selfhideInputView];

if(self.delegate) {

if(![self.dataSourceobjectAtIndex:self.selectIndex]) {

return;

}

[self.delegateloanHeaderItem:selfdidSelectValue:[self.dataSourceobjectAtIndex:self.selectIndex]atIndex:self.selectIndex];

}

}

- (void)cancel

{

[selfhideInputView];

}

- (void)fix

{

}

- (void)showInputView

{

UIWindow* window =self.window;

self.bview= [[UIViewalloc]initWithFrame:CGRectMake(0, 0,SCREEN_WIDTH,SCREEN_HEIGHT)];

self.bview.backgroundColor= [UIColorblackColor];

UITapGestureRecognizer* tap = [[UITapGestureRecognizeralloc]initWithTarget:selfaction:@selector(hideInputView)];

[self.bviewaddGestureRecognizer:tap];

self.bview.alpha= 0.3;

[windowaddSubview:self.bview];

}

- (void)hideInputView

{

[selfresignFirstResponder];

[self.bviewremoveFromSuperview];

}

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView*)pickerView

{

return1;

}

- (NSString*)pickerView:(UIPickerView*)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component

{

if(![self.dataSourceobjectAtIndex:row]) {

return@"";

}

returnself.dataSource[row];

}

- (NSInteger)pickerView:(UIPickerView*)pickerView numberOfRowsInComponent:(NSInteger)component

{

returnself.dataSource.count;

}

- (void)pickerView:(UIPickerView*)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component

{

self.selectIndex= row;

}

- (BOOL)canBecomeFirstResponder

{

[selfshowInputView];

returnYES;

}

- (NSMutableArray*)dataSource

{

if(!_dataSource) {

_dataSource= [NSMutableArrayarrayWithObjects:@"1",@"2",@"3",@"5",@"6",@"7",@"8",@"9",nil];

}

return_dataSource;

}

OK,到这里这个View就定制完成了,要让这个View弹出Picker就还差最后一步了。

[view对象 becomeFirstResponder];

在点击的时候调用一下becomeFirstResponder对象方法就OK了。

方案3:

在做完这个功能之后。。。发现有个叫ActionSheetPicker的三方。。。喜欢用三方的朋友可以用这个,功能和效果都不错。。很流畅。。

可以通过pod安装:

pod'ActionSheetPicker-3.0','~> 1.6.1'


点击任意View弹出Picker_第2张图片
用ActionSheetPicker出来的效果

OK,这就是目前我所掌握的点击任意View弹出Picker的三种方法啦。。第一种可能有些扯淡,对于对样式UI要求比较高的公司也是种不错的选择。

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