diff --git a/app/src/main/java/com/pxkj/jwzs/FirstActivity.java b/app/src/main/java/com/pxkj/jwzs/FirstActivity.java
index 2438036..3a318e2 100644
--- a/app/src/main/java/com/pxkj/jwzs/FirstActivity.java
+++ b/app/src/main/java/com/pxkj/jwzs/FirstActivity.java
@@ -34,6 +34,7 @@ public class FirstActivity extends BaseActivity {
     private static final String TAG = "FirstActivity";
     private WebView webView;
     protected WebViewLogger webViewLogger;
+    private final Handler handler = new Handler(Looper.getMainLooper());
 
     // 扩展的 MIME 类型映射
     private static final Map<String, String> MIME_TYPES = new HashMap<>();
@@ -52,6 +53,27 @@ public class FirstActivity extends BaseActivity {
         MIME_TYPES.put("woff2", "font/woff2");
         MIME_TYPES.put("ttf", "font/ttf");
         MIME_TYPES.put("wasm", "application/wasm");
+
+        MIME_TYPES.put("pdf", "application/pdf");
+        MIME_TYPES.put("zip", "application/zip");
+        MIME_TYPES.put("rar", "application/x-rar-compressed");
+        MIME_TYPES.put("7z", "application/x-7z-compressed");
+        MIME_TYPES.put("csv", "text/csv");
+        MIME_TYPES.put("txt", "text/plain");
+        MIME_TYPES.put("mp3", "audio/mpeg");
+        MIME_TYPES.put("mp4", "video/mp4");
+        MIME_TYPES.put("mov", "video/quicktime");
+        MIME_TYPES.put("webm", "video/webm");
+        MIME_TYPES.put("ogg", "audio/ogg");
+        MIME_TYPES.put("wav", "audio/wav");
+        MIME_TYPES.put("eot", "application/vnd.ms-fontobject");
+        MIME_TYPES.put("otf", "font/otf");
+        MIME_TYPES.put("doc", "application/msword");
+        MIME_TYPES.put("docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document");
+        MIME_TYPES.put("xls", "application/vnd.ms-excel");
+        MIME_TYPES.put("xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
+        MIME_TYPES.put("ppt", "application/vnd.ms-powerpoint");
+        MIME_TYPES.put("pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation");
     }
 
     @Override
@@ -253,47 +275,7 @@ public class FirstActivity extends BaseActivity {
             if (dm != null) {
                 currentDownloadId = dm.enqueue(request);
                 Toast.makeText(this, "文件已开始下载，请等待", Toast.LENGTH_SHORT).show();
-
-                // ✅ 注册广播监听下载完成事件
-                registerReceiver(new android.content.BroadcastReceiver() {
-                    @Override
-                    public void onReceive(Context context, android.content.Intent intent) {
-                        long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
-                        if (id == currentDownloadId) {
-                            DownloadManager.Query query = new DownloadManager.Query();
-                            query.setFilterById(id);
-                            android.database.Cursor cursor = dm.query(query);
-                            if (cursor != null && cursor.moveToFirst()) {
-                                int columnIndex = cursor.getColumnIndex(DownloadManager.COLUMN_STATUS);
-                                if (DownloadManager.STATUS_SUCCESSFUL == cursor.getInt(columnIndex)) {
-                                    String uriString = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
-                                    if (uriString != null) {
-                                        try {
-                                            Uri fileUri = Uri.parse(uriString);
-                                            String type = getMimeTypeForUrl(fileUri.toString());
-
-                                            android.content.Intent openIntent = new android.content.Intent(android.content.Intent.ACTION_VIEW);
-                                            openIntent.setFlags(android.content.Intent.FLAG_ACTIVITY_NEW_TASK | android.content.Intent.FLAG_GRANT_READ_URI_PERMISSION);
-                                            openIntent.setDataAndType(fileUri, type);
-
-                                            // ✅ 检查系统是否有能打开的 App
-                                            if (openIntent.resolveActivity(context.getPackageManager()) != null) {
-                                                context.startActivity(openIntent);
-                                            } else {
-                                                Toast.makeText(context, "下载完成，请前往“下载”文件夹手动打开该文件", Toast.LENGTH_LONG).show();
-                                            }
-                                        } catch (Exception e) {
-                                            Toast.makeText(context, "下载完成，但无法打开文件: " + e.getMessage(), Toast.LENGTH_SHORT).show();
-                                        }
-                                    }
-                                }
-                                cursor.close();
-                            }
-                            // ✅ 只监听一次下载任务
-                            unregisterReceiver(this);
-                        }
-                    }
-                }, new android.content.IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
+                startDownloadProgressMonitor(dm, currentDownloadId);
             } else {
                 Toast.makeText(this, "系统下载服务不可用", Toast.LENGTH_SHORT).show();
             }
@@ -304,6 +286,49 @@ public class FirstActivity extends BaseActivity {
         }
     }
 
+    /**
+     * ✅ 监控下载进度，每秒回调一次到前端
+     */
+    private void startDownloadProgressMonitor(DownloadManager dm, long downloadId) {
+        new Thread(() -> {
+            DownloadManager.Query query = new DownloadManager.Query();
+            query.setFilterById(downloadId);
+            boolean downloading = true;
+
+            while (downloading) {
+                try {
+                    Thread.sleep(1000);
+                    android.database.Cursor cursor = dm.query(query);
+                    if (cursor != null && cursor.moveToFirst()) {
+                        int status = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS));
+                        long total = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));
+                        long downloaded = cursor.getLong(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
+                        if (status == DownloadManager.STATUS_RUNNING && total > 0) {
+                            int progress = (int) ((downloaded * 100L) / total);
+                            handler.post(() -> sendProgressToJs(progress));
+                        } else if (status == DownloadManager.STATUS_SUCCESSFUL) {
+                            downloading = false;
+                            handler.post(() -> sendProgressToJs(100));
+                        } else if (status == DownloadManager.STATUS_FAILED) {
+                            downloading = false;
+                            handler.post(() -> sendProgressToJs(-1));
+                        }
+                        cursor.close();
+                    }
+                } catch (Exception ignored) {}
+            }
+        }).start();
+    }
+
+    private void sendProgressToJs(int progress) {
+        try {
+            if (webView != null) {
+                String js = String.format("if(window.onDownloadProgress){window.onDownloadProgress(%d);}", progress);
+                webView.evaluateJavascript(js, null);
+            }
+        } catch (Exception ignored) {}
+    }
+
     public static class JsBridge {
         private final WeakReference<FirstActivity> activityRef;