半屏弹窗示例添加back键处理逻辑：弹窗时点击back键先关闭弹窗

pages/template/half-screen/half-screen.uvue

@@ -172,6 +172,13 @@
       this.totalHeight = uni.getWindowInfo().windowHeight;
       this.halfNode?.style?.setProperty('top', this.totalHeight.toFixed(2)+'px');
       this.halfNode?.style?.setProperty('visibility', 'hidden');
+    },
+    onBackPress(): boolean {
+      if('visible' == this.halfNode?.style?.getPropertyValue('visibility')){
+        this.switchHalfScreen(false);
+        return true;
+      }
+      return false;
     }
   }
 </script>