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文件上传的逻辑

This commit is contained in:
frank wang 2025-10-30 16:58:16 +08:00
parent f586a6d0e3
commit f8adef2a9e
1 changed files with 46 additions and 52 deletions
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98
app/src/main/java/com/pxkj/jwzs/FirstActivity.java
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@ -262,50 +262,52 @@ public class FirstActivity extends BaseActivity {
private long currentDownloadId = -1; // 保存当前下载任务ID private long currentDownloadId = -1; // 保存当前下载任务ID
private void downloadFile(String url) { private void downloadFile(String url) {
try { new Thread(() -> {
if (TextUtils.isEmpty(url)) { try {
Toast.makeText(this, "下载地址为空", Toast.LENGTH_SHORT).show(); if (TextUtils.isEmpty(url)) {
return; 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...");
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);
request.allowScanningByMediaScanner();
request.addRequestHeader("User-Agent", System.getProperty("http.agent"));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
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) {
Toast.makeText(this, "文件已开始下载，请等待", Toast.LENGTH_SHORT).show();
currentDownloadId = dm.enqueue(request);
startDownloadProgressMonitor(dm, currentDownloadId);
} else {
Toast.makeText(this, "系统下载服务不可用", Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(this, "下载失败: " + e.getMessage(), Toast.LENGTH_SHORT).show();
} }
}).start();
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...");
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);
request.allowScanningByMediaScanner();
request.addRequestHeader("User-Agent", System.getProperty("http.agent"));
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
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) {
Toast.makeText(this, "文件已开始下载，请等待", Toast.LENGTH_SHORT).show();
currentDownloadId = dm.enqueue(request);
startDownloadProgressMonitor(dm, currentDownloadId);
} else {
Toast.makeText(this, "系统下载服务不可用", Toast.LENGTH_SHORT).show();
}
} catch (Exception e) {
e.printStackTrace();
Toast.makeText(this, "下载失败: " + e.getMessage(), Toast.LENGTH_SHORT).show();
}
} }
/** /**
@ -553,15 +555,6 @@ public class FirstActivity extends BaseActivity {
} }
} }
// ✅ 供前端调用的文件选择方法
@JavascriptInterface
public void previewFile(String url) {
FirstActivity activity = activityRef.get();
if (activity != null && !TextUtils.isEmpty(url)) {
activity.runOnUiThread(() -> activity.previewFile(url));
}
}
// ✅ 供前端调用的文件选择方法 // ✅ 供前端调用的文件选择方法
@JavascriptInterface @JavascriptInterface
public void setToken(String token) { public void setToken(String token) {
@ -570,6 +563,7 @@ public class FirstActivity extends BaseActivity {
activity.runOnUiThread(() -> activity.setToken(token)); activity.runOnUiThread(() -> activity.setToken(token));
} }
} }
@JavascriptInterface @JavascriptInterface
public void showLog(String message) { public void showLog(String message) {
FirstActivity activity = activityRef.get(); FirstActivity activity = activityRef.get();