监听UITextField的内容变化,获取键盘的模式

[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(textFieldEditChanged:)
name:@"UITextFieldTextDidChangeNotification"
object:_inputTextField];

UIKIT_EXTERN NSString *const UITextFieldTextDidBeginEditingNotification;
UIKIT_EXTERN NSString *const UITextFieldTextDidEndEditingNotification;
UIKIT_EXTERN NSString *const UITextFieldTextDidChangeNotification;

- (void)textFieldEditChanged:(NSNotification *)obj{
UITextField *textField = (UITextField *)obj.object;
NSString *toBeString = textField.text;
}

NSString *lang = [[UITextInputMode currentInputMode] primaryLanguage]; // 键盘输入模式
if ([lang isEqualToString:@"：-Hans"]) {
UITextRange *selectedRange = [textField markedTextRange];
UITextPosition *position = [textField positionFromPosition:selectedRange.start offset:0];
if (!position) {

}else{
// 中文以外的输入法

}
}

#pragma mark - UITextFieldDelegate
// 开始编辑键盘弹出的时候将组件向上移动  4s
- (void)textFieldDidBeginEditing:(UITextField *)textField {
KTLog(@"%f",self.view.frame.size.height);
if (iPhone4s) {
if ([textField isEqual:_phoneNumTextField]) {
[UIView animateWithDuration:0.5 animations:^{
_tgView.frame = CGRectMake(SCREEN_WIDTH, -SCREEN_HEIGHT/5, SCREEN_WIDTH, SCREEN_HEIGHT);
}];
}
}

}
// 结束编辑键盘消失后将组件移到原来的位置
- (void)textFieldDidEndEditing:(UITextField *)textField {
if (iPhone4s) {
if ([textField isEqual:_phoneNumTextField]) {
[UIView animateWithDuration:0.5 animations:^{
_tgView.frame = CGRectMake(SCREEN_WIDTH, 0, SCREEN_WIDTH, SCREEN_HEIGHT-54);
}];
}
}

}