Question

如何定制软键盘上的Return键的文本

Answer 1

自定义软键盘上的Return键的文本

转载

#import <UIKit/UIKit.h>

typedef void(^DoneActionBlock)(id);

@interface CustomeTextField : UITextField

@property(nonatomic,retain) UIButton* doneButton;

@property(nonatomic,retain) NSString* buttonTitle;

@property(nonatomic,copy) DoneActionBlock doneEven;

@end
#import <UIKit/UIKit.h>

typedef void(^DoneActionBlock)(id);

@interface CustomeTextField : UITextField

@property(nonatomic,retain) UIButton* doneButton;
@property(nonatomic,retain) NSString* buttonTitle;
@property(nonatomic,copy) DoneActionBlock doneEven;

@end

[cpp] view
plaincopyprint?

#import "CustomeTextField.h"

@implementation CustomeTextField

@synthesize doneButton,buttonTitle,doneEven;

- (id)initWithFrame:(CGRect)frame

{

self = [super initWithFrame:frame];

if (self) {

// Initialization code

// 注册UIKeyboardDidShowNotification通知的观察者为self

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(keyboardDidShow:) name:UIKeyboardDidShowNotification object:nil];

[[NSNotificationCenter defaultCenter] addObserver:self

selector:@selector(keyboardDidHide:)

name:UIKeyboardDidHideNotification object:nil];

}

return self;

}

/*

// Only override drawRect: if you perform custom drawing.

// An empty implementation adversely affects performance during animation.

- (void)drawRect:(CGRect)rect

{

// Drawing code

}

*/

// 实现观察者的注册事件

-(void)keyboardDidHide:(NSNotification*)note{

if (self.doneButton) {

self.doneButton.hidden=YES;

}

}

- (void)keyboardDidShow:(NSNotification *)note {

UIWindow* tempWindow = nil;

UIView* keyboard = nil;

tempWindow = [[[UIApplication sharedApplication] windows] objectAtIndex:1];

if (tempWindow == nil)

{

return;

}

int viewCount = [tempWindow.subviews count];

////find key board view.

for(int i=0; i<viewCount; i++)

{

keyboard = [tempWindow.subviews objectAtIndex:i];

//keyboard view found; add the custom button to it

if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 3.2)

{

if(([[keyboard description] hasPrefix:@"<UIPeripheralHostView"] == YES) ||(([[keyboard description] hasPrefix:@"<UIKeyboard"] == YES)))

{

NSLog(@"find UIKeyboard or UIPeripheralHostView");

[self creatDoneButton];

[keyboard addSubview:doneButton];

break;

}

}

else

{

if([[keyboard description] hasPrefix:@"<UIKeyboard"] == YES)

{

NSLog(@"find UIKeyboard");

break;

}

}

}

}

-(void)creatDoneButton

{

// 在键盘第1次弹出时，创建按钮

if (self.doneButton == nil) {

self.doneButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];

self.doneButton.hidden=YES;

//定制按钮上面要显示的文字，也可以在创建该对象时自定义，本文只自定义了按钮上面的显示文字为：buttonTitle

[self.doneButton setTitle:buttonTitle forState:UIControlStateNormal]; // 设置按钮的位置在恰当的地方

[self.doneButton setFrame:CGRectMake(773/2.0, 250/2.0, 180/2.0, 68/2.0)];

[self.doneButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];

self.doneButton.titleLabel.font = [UIFont systemFontOfSize:16];

[self.doneButton setTitle:@"hello" forState:UIControlStateNormal];

// 设置按钮背景图片

[self.doneButton setBackgroundImage:[UIImage imageNamed:@"music_starHead_1.png"] forState:UIControlStateNormal];

// 当按钮按下时，触发doneButton方法

[self.doneButton addTarget:self action:@selector(doneButton:) forControlEvents:UIControlEventTouchUpInside];

}

if (self.editing) { // 只有当前输入框会显示done按钮

self.doneButton.hidden = NO;

} else {

self.doneButton.hidden = YES;

}

}

//定制按钮的点击事件

- (void)doneButton:(id)sender {

self.doneButton.hidden=YES;

[self resignFirstResponder];

if (doneEven!=nil) { // block 回调

doneEven(sender);

}

}

- (void)dealloc

{

self.doneButton = nil;

self.doneEven = nil;

self.buttonTitle = nil;

[super dealloc];

}

@end