- (void)registerForKeyboardNotifications {//使用NSNotificationCenter 鍵盤出現時[[NSNotificationCenter defaultCenter] addObserver:selfselector:@selector(keyboardWillShown:)name:UIKeyboardWillChangeFrameNotification object:nil];//使用NSNotificationCenter 鍵盤隱藏時[[NSNotificationCenter defaultCenter] addObserver:selfselector:@selector(keyboardWillBeHidden:)name:UIKeyboardWillHideNotification object:nil]; }//實現當鍵盤出現的時候計算鍵盤的高度大小。用于輸入框顯示位置 - (void)keyboardWillShown:(NSNotification*)aNotification {

NSDictionary *info = [notification userInfo];

? ? CGFloat duration = [[info objectForKey:UIKeyboardAnimationDurationUserInfoKey] floatValue];

? ? NSValue *value = [info objectForKey:UIKeyboardFrameEndUserInfoKey];

? ? CGSize keyboardSize = [value CGRectValue].size;

?? ?

?

//輸入框位置動畫加載

?

? ? [UIView animateWithDuration:duration animations:^{

//do something

?

? ? }];

}

//當鍵盤隱藏的時候- (void)keyboardWillBeHidden:(NSNotification*)aNotification{ //do something}

轉載于:https://www.cnblogs.com/670074760-zsx/p/6834272.html

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