添加loading 动画

app/src/main/ets/pages/component/ToastPage.ets

@@ -0,0 +1,41 @@
+import { Toast } from '../../utils/Toast'
+
+@Observed
+class ToastViewMode {
+
+  showToast?: (msg: ResourceStr) => void;
+
+  showHint(msg: ResourceStr) {
+    this.showToast?.(msg);
+  }
+}
+
+@Entry
+@Component
+export struct ToastPage {
+
+  @Provide toastVM: ToastViewMode = new ToastViewMode();
+
+  aboutToAppear(): void {
+    this.toastVM.showToast = (msg: ResourceStr) => {
+      Toast.showToast(msg, true);
+    }
+  }
+
+  build() {
+
+    Column(){
+      Button("ShowDefault").width('80%').height(36).onClick(() =>{
+        Toast.showToast("Test Default")
+      })
+
+      Button("ShowTopmost").width('80%').height(36).onClick(() =>{
+        Toast.showToast("Test Topmost", true)
+      }).margin({ top: 16 })
+
+      Button("VM Show").width('80%').height(36).onClick(() =>{
+        this.toastVM.showHint("test vm Show")
+      }).margin({ top: 16 })
+    }.height('100%').width('100%').justifyContent(FlexAlign.Center)
+  }
+}