TextView：如何聆聽或處理空格鍵重點事件

Question

好吧，'return'是'insertNewline'，我喜歡那個，但是上帝的綠色地球是插入空間嗎？

所以我試圖在用戶完成單詞（又名，當他們打空格鍵或返回）後調用拼寫檢查（對於關鍵字）。但爸爸需要檢測空格鍵。繼承人的TextView的委託方法我執行...

/* listen to commands */ 
-(BOOL)textView:(NSTextView *)aTextView doCommandBySelector:(SEL)aSelector 
{ 
    BOOL result = NO; 
    if (@selector(insertNewline:) == aSelector) { 
    // does something 
    result = YES; 
    return result; 
} 
return result; 

Answer 1

使用的UITextView如下實現這個...

的 委託方法

- (BOOL)textView:(UITextView *)textView shouldChangeTextInRange:(NSRange)range 
replacementText:(NSString *)text 
{ 
    // Any new character added is passed in as the "text" parameter 
    if ([text isEqualToString:@"\n"]) { 
     //code when return key pressed. 
    } 
    else if([text isEqualToString:@" "]) 
    { 
     //code when space key pressed. 
    } 
    // For any other character return TRUE so that the text gets added to the view 
    return TRUE; 
}