// 检查是否为空字符串 (Check for an empty string). var fullName = ''; assert(fullName.isEmpty); // 检查是否小于等于零。 var hitPoints = 0; assert(hitPoints <= 0); // 检查是否为 null。 var unicorn; assert(unicorn == null); // 检查是否为 NaN。 var iMeantToDoThis = 0 / 0;...
AI代码解释 publicvoidinstallDeferredComponent(int loadingUnitId,String componentName){String resolvedComponentName=componentName!=null?componentName:loadingUnitIdToComponentNames.get(loadingUnitId);if(resolvedComponentName==null){Log.e(TAG,"Deferred component name was null and could not be resolved from loadi...
string.Empty; if (Request.Headers[ApiKeyIdentifier].Any()) { key = Request.Headers[ApiKeyIdentifier].FirstOrDefault(); } else if (Request.Query.ContainsKey(ApiKeyIdentifier)) { if (Request.Query.TryGetValue(ApiKeyIdentifier, out var queryKey)) key = queryKey; } if (string....
document}) addEditNote; @override String get key => 'notes'; @override Widget build( BuildContext context, QuillController controller, Embed node, bool readOnly, ) { final notes = NotesBlockEmbed(node.value.data).document; return Material( color: Colors.transparent, child: ListTile( title: ...
string.Empty; if (Request.Headers[ApiKeyIdentifier].Any()) { key = Request.Headers[ApiKeyIdentifier].FirstOrDefault(); } else if (Request.Query.ContainsKey(ApiKeyIdentifier)) { if (Request.Query.TryGetValue(ApiKeyIdentifier, out var queryKey)) key = queryKey; } if (string....
,StringdeveloperIdAndroid,StringaccountIdAndroidNullCreate (request) a subscription to a sku. For upgrading/downgrading subscription on Android pass second parameter with current subscription ID, on iOS this is handled automatically by store.purchaseUpdatedListenerwill receive the result....
查看源码只有 PaltformViewsController detach() 方法会把 handler 设置为 null。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public void detach() { if (platformViewsChannel != null) { platformViewsChannel.setPlatformViewsHandler(null); } } 调试下来 FlutterActivity 容器结束,调用了 onDestroy()...
StringtoStringShort(){returnkey==null?'$runtimeType':'$runtimeType-$key';}//根据字面意思 应该是调试诊断树的信息@overridevoiddebugFillProperties(DiagnosticPropertiesBuilder properties){super.debugFillProperties(properties);properties.defaultDiagnosticsTreeStyle=DiagnosticsTreeStyle.dense;}//静态方法,跟上一...
SizeboundingTextSize(String text,TextStyle style,{int maxLines=2^31,double maxWidth=double.infinity}){if(text.isEmpty){returnSize.zero;}finalTextPainter textPainter=TextPainter(textDirection:TextDirection.ltr,text:TextSpan(text:text,style:style),maxLines:maxLines)..layout(maxWidth:maxWidth);returnte...
3、BaseicMessageChannel:主要用于传递各种类型数据,它支持的类型有很多,如:String,半结构化信息等,是一种双向的通信方式 @OverridepublicvoidonMethodCall(@NonNull MethodCall call,@NonNull Result result){if(METHOD_INSTALL.equalsIgnoreCase(call.method)){...省略}} ...