add: 添加获取当前图标方法

@@ -11,4 +11,10 @@ export default class CustomIcon {
   static changeDefaultIcon() {
     CustomIconModule.changeDefaultIcon();
   }
+  // 获取当前图标
+  static getIconName(callback) {
+    CustomIconModule.getIconName((iconName)=>{
+      callback(iconName)
+    });
+  }
 };

@@ -47,6 +47,22 @@ RCT_EXPORT_METHOD(changeDefaultIcon) {
     });
 }
 
+// 获取当前图标
+RCT_EXPORT_METHOD(getIconName:(RCTResponseSenderBlock) callback ){
+    NSString *name = @"default";
+    NSDictionary *results;
+    if( [[UIApplication sharedApplication] supportsAlternateIcons ] ){
+        name = [[UIApplication sharedApplication] alternateIconName];
+        if( name == nil ){
+            name = @"default";
+        }
+    }
+
+    results =  name;
+
+    callback(@[results]);
+}
+