feat:增加导出文件功能

app/build.gradle

@@ -14,9 +14,9 @@ android {
         minSdk 26
         targetSdk 35
         // 指定应用内部版本号
-        versionCode 24
+        versionCode 26
         // 指定展示给用户的版本号
-        versionName "1.1.24"
+        versionName "1.1.26"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }

app/src/main/AndroidManifest.xml

@@ -9,6 +9,7 @@
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
     <uses-permission android:name="android.permission.BLUETOOTH_SCAN" />
     <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
 
     <application
         android:largeHeap="true"
@@ -22,6 +23,7 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.Profilometer_android"
+        android:requestLegacyExternalStorage="true"
         tools:targetApi="31">
         <activity
             android:name=".MainActivity"

app/src/main/java/com/iflytop/profilometer/api/record/RecordApi.java

@@ -1,19 +1,36 @@
 package com.iflytop.profilometer.api.record;
 
 import android.content.Context;
+import android.os.Environment;
+import android.os.Handler;
+import android.os.Looper;
+import android.widget.Toast;
 
 import com.iflytop.profilometer.common.result.Result;
+import com.iflytop.profilometer.common.utils.FileUtil;
+import com.iflytop.profilometer.core.migration.algo.type.XYPoint;
 import com.iflytop.profilometer.dao.ProfileRecordDao;
 import com.iflytop.profilometer.dao.ProfileRecordPointSetDao;
 import com.iflytop.profilometer.dao.SyncTaskDao;
 import com.iflytop.profilometer.model.entity.ProfileRecordDescription;
 import com.iflytop.profilometer.model.entity.ProfileRecordPointSet;
 
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
 
 import cn.hutool.json.JSONArray;
+import cn.hutool.json.JSONUtil;
 
 /**
  * 测量记录接口
@@ -85,12 +102,85 @@ public class RecordApi {
         for (int i = 0; i < ids.size(); i++) {
             Long id = ids.getLong(i);
             profileRecordDao.deleteProfileRecord(id);
-            try{
+            try {
                 syncTaskDao.deleteSyncTask(id);
-            }catch (Exception ignored){
+            } catch (Exception ignored) {
 
             }
         }
         return Result.success();
     }
+
+    public String download(JSONArray ids) throws Exception {
+        //确保外部存储可写
+        if (!Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
+            throw new IOException("External storage is not mounted");
+        }
+
+        new Thread(() -> {
+            File downloadRoot = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS);
+            File exportDir = new File(downloadRoot, "廓形导出");
+            if (!exportDir.exists() && !exportDir.mkdirs()) {
+                try {
+                    throw new IOException("Failed to create export directory: " + exportDir);
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+            if (ids.size() > 1) {
+                String timestamp = LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyyMMddHHmmss"));
+                String zipName = "export-" + timestamp + ".zip";
+
+                File zipFile = new File(exportDir, zipName);
+                try (ZipOutputStream zos = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile)))) {
+                    ProfileRecordDao recordDao = new ProfileRecordDao(context);
+                    ProfileRecordPointSetDao pointSetDao = new ProfileRecordPointSetDao(context);
+                    for (int i = 0; i < ids.size(); i++) {
+                        Long id = ids.getLong(i);
+                        ProfileRecordDescription desc = recordDao.getProfileRecordById(id);
+                        ProfileRecordPointSet ps = pointSetDao.getProfileRecordPointSetByUuid(desc.getUuid());
+                        List<XYPoint> pts = JSONUtil.toList(ps.getAlignPoints(), XYPoint.class);
+
+                        String entryName = "export-" + desc.getName() + ".txt";
+                        zos.putNextEntry(new ZipEntry(entryName));
+
+                        for (XYPoint pt : pts) {
+                            String line = String.format(Locale.US, "%1$.6f %2$.6f%n", pt.getX(), -pt.getY());
+                            zos.write(line.getBytes(StandardCharsets.UTF_8));
+                        }
+
+                        zos.closeEntry();
+                    }
+                    new Handler(Looper.getMainLooper()).post(() -> {
+                        Toast.makeText(context, "导出成功\n" + "/Download/廓形导出/\n" + zipName, Toast.LENGTH_LONG).show();
+                    });
+
+                } catch (Exception e) {
+                    throw new RuntimeException(e);
+                }
+            }else{
+                Long id = ids.getLong(0);
+                ProfileRecordDao recordDao = new ProfileRecordDao(context);
+                ProfileRecordPointSetDao pointSetDao = new ProfileRecordPointSetDao(context);
+                ProfileRecordDescription desc = recordDao.getProfileRecordById(id);
+                ProfileRecordPointSet ps = pointSetDao.getProfileRecordPointSetByUuid(desc.getUuid());
+                List<XYPoint> pts = JSONUtil.toList(ps.getAlignPoints(), XYPoint.class);
+                StringBuilder sb = new StringBuilder();
+                for (XYPoint pt : pts) {
+                    sb.append(String.format(Locale.US, "%1$.6f %2$.6f%n", pt.getX(), -pt.getY()));
+                }
+                String fileName = "export-" + desc.getName() + ".txt";
+                try {
+                    FileUtil.writeTextToDownloadSubDir("廓形导出",fileName,sb.toString());
+                    new Handler(Looper.getMainLooper()).post(() -> {
+                        Toast.makeText(context, "导出成功\n" + "/Download/廓形导出/\n" + fileName, Toast.LENGTH_LONG).show();
+                    });
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                }
+            }
+
+        }).start();
+        return Result.success();
+    }
 }

app/src/main/java/com/iflytop/profilometer/api/record/RecordRoutes.kt

@@ -4,7 +4,6 @@ import android.content.Context
 import cn.hutool.json.JSONUtil
 import io.ktor.http.ContentType
 import io.ktor.server.application.call
-import io.ktor.server.request.receive
 import io.ktor.server.request.receiveText
 import io.ktor.server.response.respondText
 import io.ktor.server.routing.Routing
@@ -49,5 +48,16 @@ fun Routing.recordRoutes(context: Context) {
         val jsonResponse = api.delete(ids)
         call.respondText(jsonResponse, ContentType.Application.Json)
     }
+
+    /**
+     * 导出测量记录
+     */
+    post("/api/record/download") {
+        val requestBody = call.receiveText()
+        val jsonObj = JSONUtil.parseObj(requestBody)
+        val ids = jsonObj.getJSONArray("ids")
+        val jsonResponse = api.download(ids)
+        call.respondText(jsonResponse, ContentType.Application.Json)
+    }
 }
 

app/src/main/java/com/iflytop/profilometer/common/utils/FileUtil.java

@@ -0,0 +1,55 @@
+package com.iflytop.profilometer.common.utils;
+
+import android.os.Environment;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+
+public class FileUtil {
+
+    /**
+     * 在 /storage/emulated/0/Download/<subDirName>/ 下创建子目录，
+     * 并在该目录中写入文本文件
+     *
+     * ⚠️ 调用前请确保已经：
+     *  1) 在 AndroidManifest.xml 中声明了 WRITE_EXTERNAL_STORAGE 权限；
+     *  2) 已经在运行时向用户请求并获得了该权限；
+     *  3) 如果 targetSdkVersion ≥ 29，<application> 中开启了 requestLegacyExternalStorage="true"。
+     *
+     * @param subDirName 子目录名称，例如 "MySubFolder"
+     * @param fileName   要写入的文件名，例如 "example.txt"
+     * @param content    文件内容
+     * @throws IOException 外部存储不可用、目录创建失败或写入失败时抛出
+     */
+    public static void writeTextToDownloadSubDir(String subDirName,
+                                                 String fileName,
+                                                 String content) throws IOException {
+        // 1. 确保外部存储已挂载
+        if (!Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
+            throw new IOException("External storage is not mounted");
+        }
+
+        // 2. 获取公共 Download 目录
+        File downloadRoot = Environment.getExternalStoragePublicDirectory(
+                Environment.DIRECTORY_DOWNLOADS
+        );
+        if (downloadRoot == null) {
+            throw new IOException("Cannot access Download directory");
+        }
+
+        // 3. 在 Download 下创建子目录
+        File targetDir = new File(downloadRoot, subDirName);
+        if (!targetDir.exists() && !targetDir.mkdirs()) {
+            throw new IOException("Failed to create sub-directory: " + targetDir.getAbsolutePath());
+        }
+
+        // 4. 在子目录中创建并写入文件
+        File outFile = new File(targetDir, fileName);
+        try (FileOutputStream fos = new FileOutputStream(outFile)) {
+            fos.write(content.getBytes(StandardCharsets.UTF_8));
+            fos.flush();
+        }
+    }
+}