版本

app/src/main/java/com/stand/standapp/UpdateManager.kt

@@ -34,21 +34,15 @@ class UpdateManager(private val context: Context) {
     private val fileName = "StandApp_Update.apk"
 
     /**
-     * 获取或创建公共下载目录下的文件 URI
+     * 获取应用缓存目录下的临时文件 URI，避免申请外部存储权限
      */
-    private fun getPublicDownloadUri(): Uri? {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
-            val contentValues = ContentValues().apply {
-                put(MediaStore.MediaColumns.DISPLAY_NAME, fileName)
-                put(MediaStore.MediaColumns.MIME_TYPE, "application/vnd.android.package-archive")
-                put(MediaStore.MediaColumns.RELATIVE_PATH, Environment.DIRECTORY_DOWNLOADS)
-            }
-            val contentResolver = context.contentResolver
-            return contentResolver.insert(MediaStore.Downloads.EXTERNAL_CONTENT_URI, contentValues)
-        } else {
-            val file = File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), fileName)
-            return Uri.fromFile(file)
+    private fun getCacheFileUri(): Uri {
+        val cacheDir = context.externalCacheDir ?: context.cacheDir
+        val file = File(cacheDir, fileName)
+        if (file.exists()) {
+            file.delete()
         }
+        return Uri.fromFile(file)
     }
 
     fun checkUpdate() {
@@ -216,10 +210,9 @@ class UpdateManager(private val context: Context) {
         var targetUri: Uri? = null
 
         try {
-            targetUri = getPublicDownloadUri()
-            if (targetUri == null) throw IOException("无法创建文件记录")
-
-            outputStream = context.contentResolver.openOutputStream(targetUri)
+            targetUri = getCacheFileUri()
+            val file = File(targetUri.path!!)
+            outputStream = FileOutputStream(file)
             inputStream = body.byteStream()
 
             val totalBytes = body.contentLength()
@@ -228,7 +221,7 @@ class UpdateManager(private val context: Context) {
             var totalRead: Long = 0
 
             while (inputStream.read(buffer).also { bytesRead = it } != -1) {
-                outputStream?.write(buffer, 0, bytesRead)
+                outputStream.write(buffer, 0, bytesRead)
                 totalRead += bytesRead
 
                 if (totalBytes > 0) {
@@ -239,11 +232,11 @@ class UpdateManager(private val context: Context) {
                     }
                 }
             }
-            outputStream?.flush()
+            outputStream.flush()
 
             handler.post {
                 progressDialog?.dismiss()
-                Toast.makeText(context.applicationContext, "下载完成，文件已保存到系统下载目录", Toast.LENGTH_SHORT).show()
+                Toast.makeText(context.applicationContext, "下载完成，正在安装...", Toast.LENGTH_SHORT).show()
                 installApk(targetUri)
             }
         } catch (e: Exception) {