iPhone简单实现键盘隐藏

苹果应用中，编辑TextField、TextView时弹出来的键盘有时候很闹心，不知如何隐藏。本文简单实现了带“隐藏”按钮的工具栏，用户可以随时隐藏键盘。

先上图

代码实现

首先，定义一个工具栏变量；

UIToolbar *tbHide;  // toolbar for keyboard hiding

接下来，创建并设置工具栏；

    // create keyboard toolbar, has two buttons
    tbHide = [[UIToolbar alloc]initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 36)];
    [tbHide setBarStyle:UIBarStyleBlack];
    // "Hide" button
    UIBarButtonItem * hideButton = [[UIBarButtonItem alloc]initWithTitle:@"Hide" style:UIBarButtonItemStyleBordered target:self action:@selector(hideKeyboard)];
    // "Done" button
    UIBarButtonItem * btnSpace = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:self action:nil];
    UIBarButtonItem * doneButton = [[UIBarButtonItem alloc]initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:self action:@selector(hideKeyboard)];
    NSArray * buttonsArray = [NSArray arrayWithObjects:hideButton,btnSpace,doneButton,nil];
    [tbHide setItems:buttonsArray];

    // set thoes controls that need hide keyboard functions
    [self.textField setInputAccessoryView:tbHide];
    [self.textView setInputAccessoryView:tbHide];

最后，实现隐藏键盘功能。

// hide keyboard
- (void)hideKeyboard
{
    [[UIApplication sharedApplication] sendAction:@selector(resignFirstResponder) to:nil from:nil forEvent:nil];
}

以上就是隐藏键盘功能的实现部分，比较简单。

下面给出工程源码，供大家下载！

工程源码