文件名字修改，未加ui

app/src/main/java/com/cofbro/qian/friend/friendrequest/FriendRequestAdapter.kt

@@ -33,6 +33,7 @@ class FriendRequestAdapter : RecyclerView.Adapter<FriendRequestAdapter.FriendReq
             val isCreator = t?.getBooleanExt("isCreator")
             if (isCreator == true) {
                 binding.tvTime.text = status
+                binding.tvLastMessage.text = "好友请求发送"
             } else {
                 when (status) {
                     "agree" -> {
@@ -48,9 +49,10 @@ class FriendRequestAdapter : RecyclerView.Adapter<FriendRequestAdapter.FriendReq
                         binding.tvTime.text = "已拒绝"
                     }
                 }
+                binding.tvLastMessage.text = t?.getString("content")
             }
             binding.tvUsername.text = t?.getStringExt("username")
-            binding.tvLastMessage.text = t?.getString("content")
+
             setImage(binding.ivAvatar, t?.getString("avatar"))
         }
     }

app/src/main/java/com/cofbro/qian/utils/FileUtils.kt

@@ -0,0 +1,21 @@
+package com.cofbro.qian.utils
+
+import com.hjq.toast.ToastUtils
+import java.io.File
+
+object FileUtils {
+    fun renameFile(file:File,newName:String){
+        val fileExtension = file.path.substringAfterLast('.', "")
+        val newFileName = file.parent?.plus("\\$newName.$fileExtension")
+        if (file.exists()) {
+            val newFile = newFileName?.let { File(it) }
+            if (newFile?.let { file.renameTo(it) } == true) {
+                ToastUtils.show("文件名更改成功")
+            } else {
+                ToastUtils.show("文件名更改失败")
+            }
+        } else {
+            ToastUtils.show("文件不存在")
+        }
+    }
+}