<template>
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<view class="container">
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<button @click="saveLog" class="save-button">保存日志文件</button>
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</view>
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</template>
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<script>
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// 导入必要的 Android 类
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const android = plus.android;
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const Intent = android.importClass('android.content.Intent');
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const Settings = android.importClass('android.provider.Settings');
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const Uri = android.importClass('android.net.Uri');
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const Build = android.importClass('android.os.Build');
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const Environment = android.importClass('android.os.Environment');
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const MediaStore = android.importClass('android.provider.MediaStore');
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const ContentValues = android.importClass('android.content.ContentValues');
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const ContentResolver = android.importClass('android.content.ContentResolver');
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export default {
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methods: {
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async saveLog() {
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try {
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// 直接尝试写入文件，避免依赖权限检查
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const logContent = `[${new Date().toLocaleString()}] 设备日志记录...\n`;
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const fileName = `vehicle_log_${new Date().getTime()}.txt`;
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// 使用两种方法尝试保存
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let result = await this.tryWriteWithMediaStore(fileName, logContent);
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if (!result) {
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result = await this.tryWriteWithLegacyMethod(fileName, logContent);
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}
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if (result) {
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uni.showToast({
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title: '日志保存成功',
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icon: 'success',
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duration: 3000
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});
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console.log(`文件已保存至: ${result}`);
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} else {
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throw new Error('所有保存方法均失败');
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}
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} catch (err) {
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console.error('保存失败:', err);
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uni.showToast({
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title: `保存失败: ${err.message || err}`,
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icon: 'none',
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duration: 5000
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});
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// 保存失败时显示详细错误信息
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this.showErrorDetails(err);
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}
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},
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// 方法1: 使用 MediaStore API (Android 10+推荐)
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async tryWriteWithMediaStore(fileName, content) {
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return new Promise((resolve) => {
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try {
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// 获取ContentResolver
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const mainActivity = plus.android.runtimeMainActivity();
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const resolver = mainActivity.getContentResolver();
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// 设置文件信息
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const contentValues = new ContentValues();
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contentValues.put(MediaStore.Downloads.DISPLAY_NAME, fileName);
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contentValues.put(MediaStore.Downloads.MIME_TYPE, "text/plain");
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// 对于Android 10+需要指定RELATIVE_PATH
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if (Build.VERSION.SDK_INT >= 29) {
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contentValues.put(MediaStore.Downloads.RELATIVE_PATH, Environment.DIRECTORY_DOWNLOADS);
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}
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// 创建文件URI
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const collection = MediaStore.Downloads.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY);
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const fileUri = resolver.insert(collection, contentValues);
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if (!fileUri) {
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console.error("无法创建文件URI");
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resolve(false);
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return;
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}
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// 写入文件内容
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const outputStream = resolver.openOutputStream(fileUri);
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outputStream.write(plus.android.invoke(content, "getBytes", "UTF-8"));
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outputStream.close();
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console.log("通过MediaStore写入成功:", fileUri.toString());
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resolve(fileUri.toString());
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} catch (e) {
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console.warn("MediaStore写入失败:", e);
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resolve(false);
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}
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});
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},
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// 方法2: 传统文件系统方法 (兼容旧版Android)
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async tryWriteWithLegacyMethod(fileName, content) {
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return new Promise((resolve) => {
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try {
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// 获取下载目录路径
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const downloadsDir = Environment.getExternalStoragePublicDirectory(
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Environment.DIRECTORY_DOWNLOADS
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).toString();
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const filePath = `${downloadsDir}/${fileName}`;
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// 使用Java文件API写入
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const File = plus.android.importClass('java.io.File');
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const FileOutputStream = plus.android.importClass('java.io.FileOutputStream');
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const file = new File(filePath);
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const fos = new FileOutputStream(file);
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fos.write(plus.android.invoke(content, "getBytes", "UTF-8"));
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fos.close();
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console.log("传统方法写入成功:", filePath);
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resolve(filePath);
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} catch (e) {
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console.warn("传统方法写入失败:", e);
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resolve(false);
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}
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});
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},
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// 显示错误详情
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showErrorDetails(error) {
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let message = "未知错误";
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if (error && error.message) {
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message = error.message;
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}
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// 检查存储状态
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const storageState = Environment.getExternalStorageState();
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const isMounted = Environment.MEDIA_MOUNTED.equals(storageState);
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// 获取Android版本信息
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const sdkInt = Build.VERSION.SDK_INT;
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const versionName = Build.VERSION.RELEASE;
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uni.showModal({
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title: '错误详情',
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content: `错误信息: ${message}
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Android版本: ${sdkInt} (${versionName})
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存储状态: ${storageState} (${isMounted ? '已挂载' : '未挂载'})
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应用ID: ${plus.runtime.appid}`,
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showCancel: false,
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confirmText: '确定'
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});
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},
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// 打开存储设置
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openStorageSettings() {
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try {
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const intent = new Intent(Settings.ACTION_INTERNAL_STORAGE_SETTINGS);
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plus.android.runtimeMainActivity().startActivity(intent);
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} catch (e) {
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console.error("打开存储设置失败:", e);
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}
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}
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}
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}
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</script>
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<style>
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.container {
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padding: 40px;
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display: flex;
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justify-content: center;
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align-items: center;
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height: 100vh;
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background-color: #f5f5f5;
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}
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.save-button {
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width: 300px;
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height: 60px;
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background-color: #2196F3;
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color: white;
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border-radius: 12px;
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font-size: 20px;
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font-weight: bold;
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box-shadow: 0 4px 8px rgba(0,0,0,0.2);
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}
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</style>
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