ios - “Command+delete”操作后无法为 UITextView 设置文本？

Question

在 iOS 模拟器中使用“Command+delete”从 UITextView 中删除文本后，我无法再为 UITextView 设置任何文本。

textView.text = @"any text"; //no longer works

因为文本会被 UITextView 自动删除，如果我通过键盘输入，一切都OK了。

这是代码，很简单。

@interface ViewController ()

@property (nonatomic,strong) UITextView *textView;
@end

@implementation ViewController


-(void)loadView{
    [super loadView];

    self.textView = [[UITextView alloc] initWithFrame:self.view.frame];
    [self.view addSubview:self.textView];

    UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(0, 0, 200, 50)];
    button.backgroundColor = [UIColor blackColor];
    [button setTitle:@"setText" forState:UIControlStateNormal];
    button.center = self.view.center;
    [button addTarget:self action:@selector(setText) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:button];
}

- (void)setText{
    self.textView.text = @"any text"; 
}