Android new File(path).mkdirs() 一直返回false问题,open failed: ENOENT (No such file or directory)

博客指出在compileSdkVersion 29版本中,Manifest配置权限且动态申请权限后,mkdirs一直返回false。经查找,是因为Environment.getExternalStorageDirectory().getPath()方法在该版本被标注为@Deprecated,Android Q手机无法直接访问此路径。最后给出解决方式,先判断sd卡可用性,再根据系统设置目录。

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compileSdkVersion: 29版本中

  1. Manifest已经配置权限
  2. 动态申请了权限

出现问题:mkdirs一直返回false

查找问题发现:Environment.getExternalStorageDirectory().getPath(),在compileSdkVersion: 29版本中,该方法标注了@Deprecated,里面已经说明,对于Android Q的手机,应用程序不再可以直接访问此方法返回的路径,所以会一直报错 No such file or directory

解决方式直接上代码
先判断sd卡是否可用,再根据系统设置自己的目录。

    private String environmentFileRoot;//文件根路径
    public String initFileRoot(Context context) {
        if (TextUtils.isEmpty(environmentFileRoot)){
            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {//sd卡是否可用
                int currentapiVersion=android.os.Build.VERSION.SDK_INT;//手机系统版本号
                Log.e("FileHelp","SDK_INT::"+currentapiVersion);
                if (currentapiVersion<android.os.Build.VERSION_CODES.Q){
                    environmentFileRoot = Environment.getExternalStorageDirectory().getAbsolutePath();
                }else {
                    File external = context.getExternalFilesDir(null);
                    if (external != null) {
                        environmentFileRoot =  external.getAbsolutePath();
                    }
                }
            }else {
                environmentFileRoot= context.getFilesDir().getAbsolutePath();
            }
        }
        Log.e("FileHelp","environmentFileRoot::"+environmentFileRoot);     
        return environmentFileRoot;
    }
03-21 23:30:13.628 1000 2675 2719 I ActivityManager: Start proc 28941:system/u14s1000 for broadcast {com.android.server.telecom/com.android.server.telecom.components.AppUninstallBroadcastReceiver} 03-21 23:30:13.630 1000 3393 3393 D AolSceneNotifer: updateScreenState Screen INTERNAL on 03-21 23:30:13.631 1410212 28828 28828 W ContextImpl: Failed to ensure /data/user_de/0/com.google.android.permissioncontroller/files: mkdir failed: ENOENT (No such file or directory) 03-21 23:30:13.631 1000 3393 3393 D AolSceneNotifer: updateRotationState Screen INTERNAL USB_TOWARD_DOWN 03-21 23:30:13.632 1410212 28828 28828 W ContextImpl: Failed to ensure /data/user_de/0/com.google.android.permissioncontroller/files: mkdir failed: ENOENT (No such file or directory) 03-21 23:30:13.632 1410212 28828 28828 W FileUtils: Failed to chmod(/data/user_de/0/com.google.android.permissioncontroller/files): android.system.ErrnoException: chmod failed: ENOENT (No such file or directory) 03-21 23:30:13.633 1410212 28828 28828 E LocationAccessCheck: Could not write packages_already_notified_location_access 03-21 23:30:13.633 1410212 28828 28828 E LocationAccessCheck: java.io.FileNotFoundException: /data/user_de/0/com.google.android.permissioncontroller/files/packages_already_notified_location_access: open failed: ENOENT (No such file or directory) 03-21 23:30:13.633 1410212 28828 28828 E LocationAccessCheck: at libcore.io.IoBridge.open(IoBridge.java:574) 03-21 23:30:13.633 1410212 28828 28828 E LocationAccessCheck: at java.io.FileOutputStream.<init>(FileOutputStream.java:259) 03-21 23:30:13.633 1410212 28828 28828 E LocationAccessCheck: at android.app.ContextImpl.openFileOutput(ContextImpl.java:795) 03-21 23:30:13.633 1410212 28828 28828 E LocationAccessCheck: at com.android.permissioncontroller.permission.service.LocationAccessCheck.persistAlreadyNotifiedPackagesLocked(LocationAccessCheck.java:322) 03-21 23:30:13.633 1410212 28828 28828 E LocationAccessCheck: at com.android.permission
03-22
public boolean unzip(String zipFilePath, String outputDir) { boolean success = true; //检查zipfilePath文件的大小 File zipFiletest = new File(zipFilePath); // 2. 文件大小稳定监测逻辑 long lastSize = -1; LogUtils.i("开始检测ZIP文件大小稳定性..."); while (true) { long currentSize = zipFiletest.length(); LogUtils.i("当前ZIP文件大小: " + currentSize + " bytes"); if (currentSize == lastSize) { LogUtils.i("ZIP文件大小稳定,开始解压"); break; } lastSize = currentSize; try { Thread.sleep(1000); // 每秒检测一次 } catch (InterruptedException e) { LogUtils.e("文件大小监测被中断: " + e.getMessage()); return false; } } LogUtils.i("开始解压ZIP文件: " + zipFilePath + " 到目录: " + outputDir); // 创建输出目录(如果不存在) File dir = new File(outputDir); if (!dir.exists()) { LogUtils.d("尝试创建输出目录: " + outputDir); if (!dir.mkdirs()) { LogUtils.e("无法创建输出目录: " + outputDir); return false; } LogUtils.i("成功创建输出目录: " + outputDir); } // 获取输出目录的规范路径用于安全检查 String canonicalOutputDir; try { canonicalOutputDir = dir.getCanonicalPath(); LogUtils.d("输出目录规范路径: " + canonicalOutputDir); } catch (IOException e) { LogUtils.e("获取输出目录规范路径失败: " + e.getMessage()); return false; } try (ZipInputStream zis = new ZipInputStream(new BufferedInputStream(new FileInputStream(zipFilePath)))) { LogUtils.d("打开ZIP输入流成功"); ZipEntry entry; int entryCount = 0; while ((entry = zis.getNextEntry()) != null) { entryCount++; String originalEntryName = entry.getName(); LogUtils.d("处理条目 #" + entryCount + ": " + originalEntryName + " | 目录: " + entry.isDirectory() + " | 大小: " + entry.getSize() + " bytes"); // 规范化路径处理 String entryName = normalizePath(originalEntryName); if (entryName.isEmpty()) { LogUtils.e("跳过无效条目: " + originalEntryName); continue; } LogUtils.d("规范化后路径: " + entryName); File outputFile = new File(outputDir, entryName); // 详细路径安全日志 try { String canonicalPath = outputFile.getCanonicalPath(); LogUtils.d("目标文件规范路径: " + canonicalPath); // 路径遍历安全检查 if (!canonicalPath.startsWith(canonicalOutputDir + File.separator)) { LogUtils.e("安全违规: 条目 " + originalEntryName + " 试图逃逸到 " + canonicalPath); success = false; continue; } } catch (IOException e) { LogUtils.e("路径解析错误: " + outputFile.getAbsolutePath() + " | 错误: " + e.getMessage()); success = false; continue; } // 创建父目录(如果需要) File parentDir = outputFile.getParentFile(); if (parentDir != null && !parentDir.exists()) { LogUtils.d("尝试创建父目录: " + parentDir.getAbsolutePath()); if (!parentDir.mkdirs()) { LogUtils.e("无法创建父目录: " + parentDir.getAbsolutePath()); success = false; continue; } LogUtils.i("成功创建父目录: " + parentDir.getAbsolutePath()); } if (!entry.isDirectory()) { LogUtils.d("解压文件到: " + outputFile.getAbsolutePath()); try (BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(outputFile))) { byte[] buffer = new byte[BUFFER_SIZE]; int bytesRead; long totalBytes = 0; while ((bytesRead = zis.read(buffer)) != -1) { bos.write(buffer, 0, bytesRead); totalBytes += bytesRead; // 安全检查逻辑(每秒最多1次) long currentTime = System.currentTimeMillis(); if (currentTime - lastCheckTime > 1000) { synchronized (this) { if (currentTime - lastCheckTime > 1000) { LogUtils.d("执行安全检测..."); if (!HmiJNIImpl.getInstance().mapControl()) { LogUtils.e("安全检测失败,终止解压"); return false; } lastCheckTime = currentTime; } } } } LogUtils.i("成功解压文件: " + outputFile.getName() + " | 大小: " + totalBytes + " bytes"); } catch (IOException e) { LogUtils.e("写入文件失败: " + outputFile.getAbsolutePath() + " | 错误: " + e.getMessage()); success = false; // 删除部分写入的文件 if (outputFile.exists() && !outputFile.delete()) { LogUtils.e("无法删除部分写入的文件: " + outputFile.getAbsolutePath()); } } } else { LogUtils.d("创建目录: " + outputFile.getAbsolutePath()); if (!outputFile.exists()) { if (!outputFile.mkdirs()) { LogUtils.e("无法创建目录: " + outputFile.getAbsolutePath()); success = false; } else { LogUtils.i("成功创建目录: " + outputFile.getAbsolutePath()); } } else { LogUtils.d("目录已存在: " + outputFile.getAbsolutePath()); } } zis.closeEntry(); LogUtils.d("完成处理条目: " + originalEntryName); } LogUtils.i("处理完成所有条目,共 " + entryCount + " 个"); } catch (IOException e) { LogUtils.e("解压ZIP文件时发生错误: " + e.getMessage()); success = false; } // 结果处理 if (success) { LogUtils.i("解压成功,尝试删除原始ZIP文件: " + zipFilePath); File zipFile = new File(zipFilePath); if (zipFile.delete()) { LogUtils.i("成功删除原始ZIP文件: " + zipFilePath); } else { LogUtils.e("无法删除原始ZIP文件: " + zipFilePath); success = false; } } else { LogUtils.e("解压过程中遇到错误,保留原始ZIP文件"); } LogUtils.i("解压结果: " + (success ? "成功" : "失败")); return success; } 解压时,目标路径出现什么情况会报出2025-07-28 09:58:56.962 20477-20509 ISA_NAVI_ com.isa.navi E [ZipUtils.java:unzip:68] 解压ZIP文件时发生错误: /data/data/com.isa.navi/KVM_EU_202502_T1.0_S31N.zip: open failed: ENOENT (No such file or directory)的错误?
最新发布
07-29
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