类型补充

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
@@ -215,10 +237,23 @@ public class FirstActivity extends BaseActivity {
 //                || url.endsWith(".xlsx")
 //                || url.contains("/api/file/");
     }
+    private long currentDownloadId = -1; // 保存当前下载任务ID
 
     private void downloadFile(String url) {
         try {
-            DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
+            if (TextUtils.isEmpty(url)) {
+                Toast.makeText(this, "下载地址为空", Toast.LENGTH_SHORT).show();
+                return;
+            }
+
+            if (url.startsWith("blob:") || url.startsWith("data:")) {
+                Toast.makeText(this, "无法直接下载 Blob 文件，请检查前端下载逻辑", Toast.LENGTH_SHORT).show();
+                return;
+            }
+
+            Uri uri = Uri.parse(url);
+            DownloadManager.Request request = new DownloadManager.Request(uri);
+
             String fileName = URLUtil.guessFileName(url, null, null);
             request.setTitle(fileName);
             request.setDescription("正在下载文件...");
@@ -227,16 +262,73 @@ public class FirstActivity extends BaseActivity {
             request.allowScanningByMediaScanner();
             request.addRequestHeader("User-Agent", System.getProperty("http.agent"));
 
-            DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
-            dm.enqueue(request);
+                request.setRequiresCharging(false);
+                request.setAllowedOverMetered(true);
+                request.setAllowedOverRoaming(true);
+            }
+
+            String mimeType = getMimeTypeForUrl(url);
+            request.setMimeType(!TextUtils.isEmpty(mimeType) ? mimeType : "application/octet-stream");
+
+            DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
+            if (dm != null) {
+                currentDownloadId = dm.enqueue(request);
+                Toast.makeText(this, "文件已开始下载，请等待", Toast.LENGTH_SHORT).show();
+                startDownloadProgressMonitor(dm, currentDownloadId);
+            } else {
+                Toast.makeText(this, "系统下载服务不可用", Toast.LENGTH_SHORT).show();
+            }
 
-            Toast.makeText(this, "文件已开始下载，完成后可在通知栏查看", Toast.LENGTH_SHORT).show();
         } catch (Exception e) {
             e.printStackTrace();
             Toast.makeText(this, "下载失败: " + e.getMessage(), Toast.LENGTH_SHORT).show();
         }
     }
 
+    /**
+     * ✅ 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;