IOS鍵盤問題之擋住輸入框 – iPhone手機開發技術文章 iPhone軟體開發教學課程

實現方法:

1)將輸入框的代理設置為self

(在lb文件中將輸入框的delegate設置為File’s Owner 。或者使用代碼textField.delegate = self;

2)將輸入框所對應的ViewController.h設置實現瞭UITextFieldDelegate協議

在ViewController.m文件中實現UITextFieldDelegate的三個方法即可:

#pragma -mark UITextField Delegate

-(void)textFieldDidBeginEditing:(UITextField *)textField{

CGRect frame = textField.frame;

int offset = frame.origin.y +32 –
(self.view.frame.size.height -216.0);//鍵盤高度216

NSTimeInterval animationDuration =
0.30f;

[UIViewbeginAnimations:@”ResizeForKeyboard”context:nil];

[UIViewsetAnimationDuration:animationDuration];

//將視圖的Y坐標向上移動offset個單位,以使下面騰出地方用於軟鍵盤的顯示

if(offset >
0)

self.view.frame =CGRectMake(0.0f,
-offset,self.view.frame.size.width,self.view.frame.size.height);

[UIViewcommitAnimations];

}

//當用戶按下return鍵或者按回車鍵,keyboard消失

-(BOOL)textFieldShouldReturn:(UITextField *)textField

{

[textField resignFirstResponder];

return
YES;

}

//輸入框編輯完成以後,將視圖恢復到原始狀態

-(void)textFieldDidEndEditing:(UITextField *)textField

{

self.view.frame =CGRectMake(0,0,
self.view.frame.size.width,self.view.frame.size.height);

}

//觸摸view隱藏鍵盤——touchDown

– (IBAction)View_TouchDown:(id)sender {

//
發送resignFirstResponder.

[[UIApplication
sharedApplication] sendAction:@selector(resignFirstResponder)
to:nil
from:nil
forEvent:nil];

}

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