CustomDialogController使用后置空

Signed-off-by: 赵鹏 <2645604041@qq.com>

permissionmanager/src/main/ets/pages/authority-tertiary-groups.ets

@@ -418,6 +418,10 @@ struct applicationItem {
     }
   }
 
+  aboutToDisappear() {
+    this.privacyDialogController = null;
+  }
+
   build() {
     Column() {
       Row() {

permissionmanager/src/main/ets/pages/dialogPlus.ets

@@ -71,6 +71,10 @@ struct dialogPlusPage {
     this.privacyDialogController.open();
   }
 
+  aboutToDisappear() {
+    this.privacyDialogController = null;
+  }
+
   onPageShow() {
     this.isUpdate ++;
   }

permissionmanager/src/main/ets/pages/globalSwitch.ets

@@ -53,6 +53,10 @@ struct globalSwitch {
   aboutToAppear() {
     this.privacyDialogController.open();
   }
+
+  aboutToDisappear() {
+    this.privacyDialogController = null;
+  }
 }
 
 @CustomDialog

permissionmanager/src/main/ets/pages/securityDialog.ets

@@ -51,6 +51,10 @@ struct SecurityDialog {
     want = this.want;
     win = this.win;
   }
+
+  aboutToDisappear() {
+    this.securityDialogController = null;
+  }
 }
 
 @CustomDialog