与键盘的那点事

1.自定义键盘

```

self.view.inputView:

```

2.退出键盘

```

1> [self resignFristResponer];

2>[self.view endEdting];

```

3.退出自定义键盘

```

self.view.inputView =nil;

//清空自定义键盘，系统视作恢复系统自带键盘

textfield= [[UITextFieldalloc]initWithFrame:CGRectMake(100,100,100,100)];

textfield.backgroundColor= [UIColorredColor];

[self.viewaddSubview:textfield];

UIToolbar* topView = [[UIToolbaralloc]initWithFrame:CGRectMake(0,0,320,30)];

[topViewsetBarStyle:UIBarStyleBlackTranslucent];

//让键盘在右边，创建一个空的按钮

UIBarButtonItem* btnSpace = [[UIBarButtonItemalloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpacetarget:selfaction:nil];

UIButton*btn = [UIButtonbuttonWithType:UIButtonTypeCustom];

btn.frame=CGRectMake(2,5,100,25);

[btnsetTitle:@"键盘收起"forState:UIControlStateNormal];

[btnaddTarget:selfaction:@selector(dismissKeyBoard)forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem*doneBtn = [[UIBarButtonItemalloc]initWithCustomView:btn];

NSArray* buttonsArray = [NSArrayarrayWithObjects:btnSpace,doneBtn,nil];

[topViewsetItems:buttonsArray];

[textfieldsetInputAccessoryView:topView];

}

-(void)dismissKeyBoard

{

[textfieldresignFirstResponder];

}

```