iphone - tempUITextView setText: @"some text" 给出错误

Question

我创建了一个 UIView* myView 然后我创建了一个 UITextVIew *tempUITextView 并将其文本设置为

[tempUITextView setText:@"some text"];
[myView addSubView: tempUITextView];

当我运行代码时，它给出了一个错误：由于未捕获的异常'NSInvalidArgumentException'而终止应用程序，原因：'-[UIView setText：]：

Answer 1

做以下事情：

UIView *myView = [[UIView alloc]initWithFrame:CGRectMake(0, 280, 320, 180)];//Any frame you want to set
[myView setBackgroundColor:[UIColor redColor]]; // Given color to differntiate between myView and tempUITextView
UITextView *tempUITextView = [[UITextView alloc]initWithFrame:CGRectMake(0, 0, 200, 100)];//Any frame for tempUITextView in myView
[tempUITextView setText:@"hi"];
[myView addSubview:tempUITextView];
[self.view addSubview:myView];

Answer 2

你的错误在这一行

UITextView* tempUITextView =[[[UIView alloc]initWithFrame:CGRectMake(0, 0, 100, 30)] autorelease];

将其替换为

UITextView* tempUITextView =[[[UITextView alloc]initWithFrame:CGRectMake(0, 0, 100, 30)]autorelease];

Answer 3

您是否将 IBOutlets 用于视图和文本视图？如果是，请检查您是否将插座连接到错误的对象。