切换系统自带键盘为自定义键盘

if (self.textView.inputView == nil) { // 切换为自定义的表情键盘

HWEmotionKeyboard *emotionKeyboard = [[HWEmotionKeyboard alloc] init];// 自定义的键盘

emotionKeyboard.width = self.view.width;

emotionKeyboard.height = 216;

self.textView.inputView = emotionKeyboard;

} else { // 切换为系统自带的键盘

self.textView.inputView = nil;

}

// 开始切换键盘

self.switchingKeybaord = YES;//申明一个BOOL值监听键盘的切换

// 退出键盘

[self.textView endEditing:YES];

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{

[self.textView becomeFirstResponder];

self.switchingKeybaord = NO;// 结束键盘

});

#pragma mark - 监听方法

/**

* 键盘的frame发生改变时调用（显示、隐藏等）

*/

- (void)keyboardWillChangeFrame:(NSNotification *)notification

{

// 如果正在切换键盘，就不要执行后面的代码

if (self.switchingKeybaord) return;

}