一、效果图
二、代码
viewcontroller.h
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#import <uikit/uikit.h>
@interface viewcontroller : uiviewcontroller
<uitextfielddelegate>
@end
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viewcontroller.m
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#import "viewcontroller.h"
#define w [uiscreen mainscreen].bounds.size.width
#define h [uiscreen mainscreen].bounds.size.height
@interface viewcontroller ()
@end
@implementation viewcontroller
- (void)viewdidload {
[super viewdidload];
// do any additional setup after loading the view, typically from a nib.
uitextfield *field=[[uitextfield alloc]initwithframe:cgrectmake(100, 300, 50, 50)];
field.backgroundcolor=[uicolor redcolor];
field.delegate=self;
[self.view addsubview:field];
}
#pragma -mark -uitextfielddelegate
-(bool)textfieldshouldreturn:(uitextfield *)textfield
{
[textfield resignfirstresponder];
//self.view 恢复原位
nstimeinterval animationduration=0.10f;
[uiview beginanimations:@"resizeforkeyboard" context:nil];
[uiview setanimationduration:animationduration];
float width = w;
float height = h;
float y = 0.0f;
cgrect rect=cgrectmake(0.0f,y,width,height);
self.view.frame=rect;
[uiview commitanimations];
return yes;
}
-(bool)textfieldshouldbeginediting:(uitextfield *)textfield
{
nstimeinterval animationduration=0.30f;
[uiview beginanimations:@"resizeforkeyboard" context:nil];
[uiview setanimationduration:animationduration];
float width = w;
float height = h;
//上移100个单位，按实际情况设置
cgrect rect=cgrectmake(0.0f,-100,width,height);
self.view.frame=rect;
[uiview commitanimations];
return yes;
}
- (void)didreceivememorywarning {
[super didreceivememorywarning];
// dispose of any resources that can be recreated.
}
@end
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。