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[Objective-C] UIViewAlertメモ

Last updated at Posted at 2014-03-07

JSならalert('OK');だけで出てくれるのに、色々と初期化が大変です。(その分、機能豊富ですが)
IDEに補完任せてると一向に覚えないのでメモとして残しておきます。

##UIAlertViewを生成

###色々まとめて初期化

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"タイトル"
                                                message:@"メッセージ"
                                               delegate:self
                                      cancelButtonTitle:@"キャンセル"
                                      otherButtonTitles:@"ボタン1", @"ボタン2", @"ボタン3", nil];

最後のotherButtonTitles:の引数は可変引数です。なので最後はnil

###個別に設定

UIAlertView *alert = [[UIAlertView alloc] init];
alert.title    = @"タイトル";
alert.message  = @"メッセージ";
alert.delegate = self;
alert.cancelButtonIndex = 0;
[alert addButtnWithTitle:@"キャンセル"];
[alert addButtonWithTitle:@"OK"];
[alert show];

###デリゲートで押したボタンを判別

- (void)alertView:(UIAlertview *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
	switch (buttonIndex) {
		case 0: {
			// 0番目のボタン
			break;
		}
		case 1: {
			// 1番目のボタン
			break;
		}
		// …以下必要な分続く
	}
}

##UIAlertViewを同期的に使う

色々問題はありますが、一応同期的に扱う方法があります。
それについては個別に書いているので、[Objective-C] UIAlertViewを同期処理するを見てください。

Associated Objectについての解説はこちらに移動しました。

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