feat:增加相册选择逻辑

@@ -99,7 +99,7 @@ struct EditUserInfoPage {
   pickerSelect(index:number){
   pickerSelect(index:number){
     if (index === 0) {
     if (index === 0) {
       photoPickerUtils.getPhotoPicker(1).then(value => {
       photoPickerUtils.getPhotoPicker(1).then(value => {
-        if (value) {
+        if (value['photoUris'].length > 0) {
           this.headerImg = value['photoUris'][0]
           this.headerImg = value['photoUris'][0]
         }
         }
       })
       })