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/ohos5.0/foundation/arkui/advanced_ui_component/source/ComposeListItem/
H A DComposeListItem.ets87 title: string = null
104 if (this.subtitle == null && this.description == null) {
124 if (this.icon == null && this.iconStyle == null) {
135 if (this.icon != null && this.iconStyle != null) {
211 text: string = null
228 if ((this.button == null && this.image == null && this.icon != null && this.text != null) ||
229 …(this.button == null && this.image == null && this.icon == null && this.arrow != null && this.text…
288 Radio({ value: null, group: null })
329 else if (this.icon != null && this.text != null) {
333 else if (this.arrow != null && this.text == null) {
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/ohos5.0/docs/zh-cn/application-dev/reference/apis-arkui/
H A Djs-apis-arkui-renderNode.md41 private rootNode: FrameNode | null = null;
98 private rootNode: FrameNode | null = null;
164 private rootNode: FrameNode | null = null;
225 private rootNode: FrameNode | null = null;
276 private rootNode: FrameNode | null = null;
346 private rootNode: FrameNode | null = null;
419 private rootNode: FrameNode | null = null;
488 private rootNode: FrameNode | null = null;
559 private rootNode: FrameNode | null = null;
639 private rootNode: FrameNode | null = null;
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H A Djs-apis-arkui-builderNode.md250 private textNode: BuilderNode<[Params]> | null = null;
313 private rootNode: FrameNode | null = null;
314 private textNode: BuilderNode<[Params]> | null = null;
381 private rootNode: FrameNode | null = null;
382 private textNode: BuilderNode<[Params]> | null = null;
486 private rootNode: FrameNode | null = null;
487 private textNode: BuilderNode<[Params]> | null = null;
606 private rootNode: BuilderNode<[Params]> | null = null;
702 private rootNode: FrameNode | null = null;
703 private builderNode: BuilderNode<[]> | null = null;
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H A Djs-apis-arkui-graphics.md281 private rootNode: FrameNode | null = null;
909 private rootNode: FrameNode | null = null;
977 private rootNode: FrameNode | null = null;
1036 private rootNode: FrameNode | null = null;
1095 private rootNode: FrameNode | null = null;
1154 private rootNode: FrameNode | null = null;
1207 private rootNode: FrameNode | null = null;
1261 private rootNode: FrameNode | null = null;
1315 private rootNode: FrameNode | null = null;
1392 private rootNode: FrameNode | null = null;
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/ohos5.0/docs/zh-cn/release-notes/changelogs/OpenHarmony_5.0.0.13/
H A Dchangelogs-arkui.md115 …torageLink为例，当前应用存在误用null和undefined作为初始值或目标值在AppStorage中保存的情况。在更改前的语义中，null和undefined作为初始值或目标值的调用并…
124 AppStorage.setOrCreate("PropA", null);
125 AppStorage.has("PropA");// 不支持设置null或undefined，会返回false
147 AppStorage.setOrCreate("PropA", null);
148 AppStorage.has("PropA");// 支持设置null或undefined，会返回true
206 1、在初始化值的时候不使用null或者undefined的值来初始化，使用有意义的值来初始化。
208 2、将原有的值改为null或undefined会触发UI刷新。
217 AppStorage.setOrCreate("PropA", null);
218 AppStorage.has("PropA"); // 支持设置null或undefined，会返回true
229 Button("Set propA to null")
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/ohos5.0/foundation/communication/bluetooth_service/test/example/bluetoothtest/entry/src/main/ets/MainAbility/model/
H A DbtmProfileModel.ets60 getA2DPSourceProfile(): btm.A2dpSourceProfile | null {
64 return null
73 return null
77 getHidHostProfile(): btm.HidHostProfile | null {
78 if ( this.profiles[ this.PROFILE_HID_HOST ] != null ) {
81 return null
85 getPanNetworkProfile(): btm.PanProfile | null {
89 return null
94 if ( this.profiles[ type ] != null ) {
97 console.log("This.profiles[ type ] = null")
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H A DbtProfileModel.ets74 return null;
81 return null;
84 getHidHostProfile(): hid.HidHostProfile | null {
88 return null;
91 getPanNetworkProfile(): pan.PanProfile | null {
95 return null;
98 getOppProfile(): bt.OppProfile | null {
99 if ( this.profiles[ this.PROFILE_OPP ] != null ) {
102 return null;
106 if ( this.profiles[ type ] != null ) {
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/ohos5.0/foundation/arkui/ace_engine/advanced_ui_component/composelistitem/source/
H A Dcomposelistitem.ets131 @Prop @Watch('onPropChange') iconStyle: IconType | null = null;
132 @Prop @Watch('onPropChange') icon: ResourceStr | null = null;
152 if (this.icon == null && this.iconStyle == null) {
268 @Prop @Watch('onPropChange') arrow: OperateIcon | null = null;
269 @Prop @Watch('onPropChange') icon: OperateIcon | null = null;
276 @Prop @Watch('onPropChange') text: ResourceStr | null = null;
310 if ((this.button == null && this.image == null && this.icon != null && this.text != null) ||
311 …(this.button == null && this.image == null && this.icon == null && this.arrow != null && this.text…
650 } else if (this.icon != null && this.text != null) {
653 } else if (this.arrow != null && this.text == null) {
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/ohos5.0/commonlibrary/rust/ylong_json/src/
H A Dadapter.rs1098 use std::ptr::{null, null_mut};
1255 ylong_json_delete(null); in ut_ylong_json_delete()
1339 let null = null_mut(); in ut_ylong_json_is_null() localVariable
1797 let str = null(); in ut_ylong_json_create_string()
1901 let str = null(); in ut_ylong_json_set_value_to_string()
2691 let str = null(); in ut_ylong_json_has_object_item()
2738 let str = null(); in ut_ylong_json_get_object_item()
2789 let str = null(); in ut_ylong_json_add_item_to_object()
2855 let str = null(); in ut_ylong_json_replace_object_item_by_index()
2922 let str = null(); in ut_ylong_json_remove_object_item_by_index()
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/ohos5.0/docs/en/application-dev/reference/apis-arkui/
H A Djs-apis-arkui-renderNode.md41 private rootNode: FrameNode | null = null;
98 private rootNode: FrameNode | null = null;
164 private rootNode: FrameNode | null = null;
225 private rootNode: FrameNode | null = null;
276 private rootNode: FrameNode | null = null;
346 private rootNode: FrameNode | null = null;
419 private rootNode: FrameNode | null = null;
488 private rootNode: FrameNode | null = null;
559 private rootNode: FrameNode | null = null;
639 private rootNode: FrameNode | null = null;
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/ohos5.0/docs/zh-cn/application-dev/ui/
H A Darkts-user-defined-arktsNode-frameNode.md86 public frameNode: FrameNode | null = null;
88 public rootNode: FrameNode | null = null;
89 private uiContext: UIContext | null = null;
344 public frameNode: FrameNode | null = null;
345 public rootNode: FrameNode | null = null;
576 public rootNode: MyFrameNode | null = null;
654 public frameNode: FrameNode | null = null;
655 private rootNode: FrameNode | null = null;
784 private rootNode: FrameNode | null = null;
1289 rootNode: FrameNode | null = null;
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H A Darkts-user-defined-arktsNode-builderNode.md81 private textNode: BuilderNode<[Params]> | null = null;
143 private rootNode: FrameNode | null = null;
144 private textNode: BuilderNode<[Params]> | null = null;
245 private textNode: BuilderNode<[Params]> | null = null;
340 private rootNode: BuilderNode<[Params]> | null = null;
391 private listener: DataChangeListener | null = null
572 private textNode: BuilderNode<[Params]> | null = null;
697 private rootNode: FrameNode | null = null;
698 private textNode: BuilderNode<[]> | null = null;
814 private rootNode: FrameNode | null = null;
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/ohos5.0/docs/en/release-notes/changelogs/OpenHarmony_5.0.0.13/
H A Dchangelogs-arkui.md124 AppStorage.setOrCreate("PropA", null);
147 AppStorage.setOrCreate("PropA", null);
148 AppStorage.has("PropA");// Because null and undefined are supported, true is returned.
208 2. Changing a value to **null** or **undefined** will trigger UI re-render.
210 3. Add a null check to the invoking position.
217 AppStorage.setOrCreate("PropA", null);
218 AppStorage.has("PropA"); // Because null and undefined are supported, true is returned.
223 @StorageLink('PropA') propA: PropA | null | undefined = new PropA();
227 …this.propA?.num.toString())// Check whether the value is null to prevent crashes caused by null an…
229 Button("Set propA to null")
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/ohos5.0/build/build_scripts/
H A Dbuild.sh128 cat $HOME/.npmrc | grep 'lockfile=false' > /dev/null || echo 'lockfile=false' >> $HOME/.npmrc > /de…
142 ${OHPM_HOME}/init > /dev/null
147 popd > /dev/null
155 npm install --silent > /dev/null
156 popd > /dev/null
159 pushd $HOME/.ohpm > /dev/null
161 ohpm install > /dev/null
162 popd > /dev/null
181 pushd ${ROOT_PATH} > /dev/null
204 popd > /dev/null
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/ohos5.0/foundation/ability/ability_runtime/services/dialog_ui/ams_system_dialog/entry/src/main/ets/utils/
H A DBreakpointSystem.ets32 private smListener: mediaQuery.MediaQueryListener | null = null;
33 private mdListener: mediaQuery.MediaQueryListener | null = null;
34 private lgListener: mediaQuery.MediaQueryListener | null = null;
35 private callback: triggerFunc | null = null;
69 if (BREAKPOINT_VALUE === null || BREAKPOINT_VALUE.length !== 3) {
81 if (this.smListener !== null) {
84 if (this.mdListener !== null) {
87 if (this.lgListener !== null) {
/ohos5.0/foundation/window/window_manager/resources/abc/pip/source/
H A DPiPContent.ets24 private node: FrameNode | null = null;
31 makeNode(uiContext: UIContext): FrameNode | null {
46 private nodeController: NodeController | null = null;
47 private mXCNodeController: XCNodeController | null = null;
49 private xComponent: TypedFrameNode<XComponentInterface, XComponentAttribute> | null = null;
56 if (this.xComponent === null || this.xComponent === undefined) {
57 console.error(TAG, `xComponent node is null`);
89 if (this.nodeController !== null) {
/ohos5.0/docs/zh-cn/application-dev/reference/apis-arkui/arkui-ts/
H A Dohos-arkui-advanced-MultiNavigation.md674 if (this.pageStack !== undefined && this.pageStack !== null) {
684 if (this.pageStack !== undefined && this.pageStack !== null) {
694 if (this.pageStack !== undefined && this.pageStack !== null) {
716 if (this.pageStack !== undefined && this.pageStack !== null) {
726 if (this.pageStack !== undefined && this.pageStack !== null) {
735 if (this.pageStack !== undefined && this.pageStack !== null) {
744 if (this.pageStack !== undefined && this.pageStack !== null) {
754 if (this.pageStack !== undefined && this.pageStack !== null) {
763 if (this.pageStack !== undefined && this.pageStack !== null) {
772 if (this.pageStack !== undefined && this.pageStack !== null) {
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/ohos5.0/docs/zh-cn/application-dev/quick-start/
H A Darkts-migration-background.md46 // 类型为"string"，不可能为"null"或者"undefined"
101 在大多数情况下，函数`notify`会接受两个`string`类型的变量作为输入，产生一个新的字符串。但是，如果将一些特殊值作为输入，例如`notify(null, undefined)`，情况会怎…
102 程序仍会正常运行，输出预期值：`Dear null, a message for you: undefined`。一切看起来正常，但是请注意，为了保证该场景下程序的正确性，引擎总是在运行时进行类型检…
110 if (s === null)
111 return 'null'
118 …（不会是其他值，例如`null`或者`undefined`）可以被传入函数`notify`呢？在这种情况下，因为可以确保没有其他边界情况，像`__internal_tostring`的检查就是多余…
126 notify(null, undefined) // 编译时错误
129 …`来实现此特性。但是TS是被编译成JS的，而JS没有这个特性，因此严格`null`检查只在编译时起作用。从程序稳定性和性能角度考虑，ArkTS将“null-safety”视为一个重要的特性。这就是…
/ohos5.0/docs/en/application-dev/application-models/
H A Dexplicit-implicit-want-mappings.md59 …n** in the passed **want** parameter is null and **actions** under **skills** of an application co…
61 …in the passed **want** parameter is not null but **actions** under **skills** of an application co…
63 …* in the passed **want** parameter is null but **actions** under **skills** of an application comp…
77 … in the passed **want** parameter is null but **entities** under **skills** of an application comp…
79 …** in the passed **want** parameter is null but **entities** under **skills** of an application co…
81 …n the passed **want** parameter is not null but **entities** under **skills** of an application co…
97 - Both **uri** and **type** are null in the **want** parameter.
102 - Only **uri** is not null in the **want** parameter.
107 - Only **type** is not null in the **want** parameter.
133 - If **scheme** of **s_uri** is null and **w_uri** is null, the matching is successful. Otherwise, …
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/ohos5.0/docs/zh-cn/release-notes/api-diff/v3.1-Release/
H A Djs-apidiff-graphic.md53 | webgl2 | WebGL2RenderingContextBase | deleteSync(sync: WebGLSync \| null): void; | 新增 |
54 | webgl2 | WebGL2RenderingContextBase | isSync(sync: WebGLSync \| null): GLboolean; | 新增 |
62 | webgl2 | WebGL2RenderingContextBase | createSampler(): WebGLSampler \| null; | 新增 |
67 | webgl2 | WebGL2RenderingContextBase | isQuery(query: WebGLQuery \| null): GLboolean; | 新增 |
68 | webgl2 | WebGL2RenderingContextBase | deleteQuery(query: WebGLQuery \| null): void; | 新增 |
69 | webgl2 | WebGL2RenderingContextBase | createQuery(): WebGLQuery \| null; | 新增 |
483 | webgl | WebGLRenderingContextBase | createTexture(): WebGLTexture \| null; | 新增 |
486 | webgl | WebGLRenderingContextBase | createProgram(): WebGLProgram \| null; | 新增 |
487 | webgl | WebGLRenderingContextBase | createFramebuffer(): WebGLFramebuffer \| null; | 新增 |
488 | webgl | WebGLRenderingContextBase | createBuffer(): WebGLBuffer \| null; | 新增 |
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/ohos5.0/docs/zh-cn/application-dev/reference/apis-arkgraphics3d/
H A Djs-apis-inner-scene-nodes.md41 let node : Node | null = result.getNodeByPath("rootNode_");
74 let node : Node | null = result.getNodeByPath("rootNode/Scene/");
129 insertAfter(item: T, sibling: T | null): void
139 | sibling | T \| null | 是 | 兄弟结点。 |
152 result.root?.children.get(0)?.children.insertAfter(node, null);
188 get(index: number): T | null
202 | T \| null | 返回获取到的对象，获取不到则返回空值。 |
266 let node : Node | null = result.getNodeByPath("rootNode_");
293 | parent | [Node](#node) \| null | 是 | 否 | 结点的父结点，不存在则为空值。 |
297 getNodeByPath(path: string): Node | null
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/ohos5.0/docs/zh-cn/application-dev/web/
H A Dweb-component-migrate.md51 webController: webview.WebviewController | null = null;
73 private builderNode: BuilderNode<[Data]> | null | undefined = null;
74 private webController : webview.WebviewController | null | undefined = null;
75 private rootNode : FrameNode | null = null;
85 makeNode(uiContext: UIContext): FrameNode | null {
93 let frameNode : FrameNode | null = this.builderNode.getFrameNode();
94 if (frameNode?.getParent() != null) {
105 this.rootNode = null;
108 getWebController() : webview.WebviewController | null | undefined {
/ohos5.0/docs/zh-cn/application-dev/accessibility/
H A Daccessibilityextensionability.md77 currentPageElementArray: Array<AccessibilityElement> | null = null;
128 Promise<string | null> {
130 if (accessibilityElement === null) {
131 console.error(`AccessibilityUtils accessibilityElement is null`);
132 return null;
136 let value: attributeValues | null;
145 Promise<attributeValues | null> {
163 return null;
168 if (this.currentPageElementArray === null || this.currentPageElementArray.length === 0) {
169 console.error(`AccessibilityManager currentPageElementArray is null`);
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/ohos5.0/docs/en/application-dev/ui/
H A Darkts-user-defined-arktsNode-frameNode.md86 public frameNode: FrameNode | null = null;
88 public rootNode: FrameNode | null = null;
89 private uiContext: UIContext | null = null;
344 public frameNode: FrameNode | null = null;
345 public rootNode: FrameNode | null = null;
576 public rootNode: MyFrameNode | null = null;
654 public frameNode: FrameNode | null = null;
655 private rootNode: FrameNode | null = null;
784 private rootNode: FrameNode | null = null;
1289 rootNode: FrameNode | null = null;
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/ohos5.0/docs/en/application-dev/reference/apis-avsession-kit/
H A D_o_h_a_v_session.md567 1. **builder** is a null pointer.
598 1. **builder** is a null pointer.
600 2. **album** is a null pointer.
629 1. **builder** is a null pointer.
631 2. **artist** is a null pointer.
661 1. **builder** is a null pointer.
663 2. **assetId** is a null pointer.
695 2. **author** is a null pointer.
846 2. **lyric** is a null pointer.
973 2. **title** is a null pointer.
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