获取extension，判断第一次

keyBoard/VC/KBPermissionViewController.m

@@ -18,7 +18,6 @@
     [super viewDidLoad];
     self.view.backgroundColor = [UIColor colorWithWhite:0.96 alpha:1.0];
 
-    // Close button (top-right)
     UIButton *close = [UIButton buttonWithType:UIButtonTypeSystem];
     [close setTitle:@"X" forState:UIControlStateNormal];
     close.titleLabel.font = [UIFont systemFontOfSize:20 weight:UIFontWeightSemibold];
@@ -28,7 +27,6 @@
     [close addTarget:self action:@selector(dismissSelf) forControlEvents:UIControlEventTouchUpInside];
     [self.view addSubview:close];
 
-    // Title
     UILabel *title = [[UILabel alloc] init];
     title.text = @"启用输入法";
     title.font = [UIFont systemFontOfSize:22 weight:UIFontWeightSemibold];
@@ -38,7 +36,6 @@
     title.autoresizingMask = UIViewAutoresizingFlexibleWidth;
     [self.view addSubview:title];
 
-    // Step tips
     UILabel *tips = [[UILabel alloc] init];
     tips.text = @"1 开启键盘 > 2 允许完全访问";
     tips.font = [UIFont systemFontOfSize:14];
@@ -48,7 +45,6 @@
     tips.autoresizingMask = UIViewAutoresizingFlexibleWidth;
     [self.view addSubview:tips];
 
-    // Illustration placeholder (simple rounded rect)
     UIView *card = [[UIView alloc] initWithFrame:CGRectMake(32, CGRectGetMaxY(tips.frame) + 28, self.view.bounds.size.width - 64, 260)];
     card.backgroundColor = [UIColor whiteColor];
     card.layer.cornerRadius = 16;
@@ -57,7 +53,6 @@
     card.layer.shadowRadius = 12;
     [self.view addSubview:card];
 
-    // Button to open Settings
     UIButton *open = [UIButton buttonWithType:UIButtonTypeSystem];
     [open setTitle:@"去设置中开启" forState:UIControlStateNormal];
     open.titleLabel.font = [UIFont systemFontOfSize:17 weight:UIFontWeightSemibold];
@@ -70,7 +65,6 @@
     [open addTarget:self action:@selector(openSettings) forControlEvents:UIControlEventTouchUpInside];
     [self.view addSubview:open];
 
-    // Bottom helper text
     UILabel *help = [[UILabel alloc] init];
     help.text = @"没有找到键盘? 请前往 设置 > 通用 > 键盘 > 键盘 > 添加新键盘";
     help.font = [UIFont systemFontOfSize:12];
@@ -87,20 +81,7 @@
 }
 
 - (void)openSettings {
-    // In app extensions you cannot call UIApplication. Use extension-safe code.
     NSURL *url = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
-
-//#if TARGET_OS_APP_EXTENSION
-//    // Try to open Settings via the extension context (extension-safe). This may
-//    // fail depending on the extension type and system policy.
-//    if (self.extensionContext) {
-//        if (@available(iOS 10.0, *)) {
-//            [self.extensionContext openURL:url completionHandler:nil];
-//        } else {
-//            [self.extensionContext openURL:url completionHandler:nil];
-//        }
-//    }
-//#else
     UIApplication *app = [UIApplication sharedApplication];
     if ([app canOpenURL:url]) {
         if (@available(iOS 10.0, *)) {
@@ -109,7 +90,6 @@
             [app openURL:url];
         }
     }
-//#endif
 }
 
 @end