autojs之选择文件

使用场景

调用手机自带的文件管理 选择文件

效果展示

autojs版本

功能

1. 可任意选择图片, 音频, 视频
2. 可以更换imgView的图片
3. 可以播放音频
4. 可以播放视频

你将学到以下知识

1. 调用文件管理选择文件
2. 接收文件管理返回的数据
3. 增加或者删除子view
4. 使用文件头判断文件类型
5. uri转文件路径

完整代码

"ui";importClass(android.content.Intent);importClass(android.graphics.BitmapFactory);importClass(android.provider.MediaStore);importClass(android.webkit.MimeTypeMap);ui.layout(  <vertical>    <button id="btnImg" text="选择图片" />    <button id="btnAudio" text="选择音频" />    <button id="btnVideo" text="选择视频" />    <button id="btnImgAndVideo" text="选择图片和视频" />    <button id="btnAnyFile" text="选择任意文件" />    <text textSize="30sp" w="*" gravity="center" textStyle="bold">      AutoJsPro教程 牙叔    </text>    <vertical id="parentView"></vertical>  </vertical>);let imgRequestCode = 1;let audioRequestCode = 2;let videoRequestCode = 3;let imgAndVideoRequestCode = 4;let imgAnyFileRequestCode = 5;ui.btnImg.on("click", () => {  let fileType = "image/*";  let requestCode = imgRequestCode;  var intent = new Intent();  intent.setType(fileType);  intent.setAction(Intent.ACTION_GET_CONTENT);  activity.startActivityForResult(intent, requestCode);});ui.btnAudio.on("click", () => {  let requestCode = audioRequestCode;  let i = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI);  activity.startActivityForResult(i, requestCode);});ui.btnVideo.on("click", () => {  let fileType = "video/*";  let requestCode = videoRequestCode;  var intent = new Intent();  intent.setType(fileType);  intent.setAction(Intent.ACTION_GET_CONTENT);  activity.startActivityForResult(intent, requestCode);});ui.btnImgAndVideo.on("click", () => {  let fileType = "video/* image/*";  let requestCode = imgAndVideoRequestCode;  intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);  intent.setType(fileType);  activity.startActivityForResult(intent, requestCode);});ui.btnAnyFile.on("click", () => {  let fileType = "*/*";  let requestCode = imgAnyFileRequestCode;  var intent = new Intent();  intent.setType(fileType);  intent.setAction(Intent.ACTION_GET_CONTENT);  activity.startActivityForResult(intent, requestCode);});activity.getEventEmitter().on("activity_result", (requestCode, resultCode, data) => {  if (resultCode != -1) {    toastLog("没有选择文件!");    return false;  } else {    var uri = data.getData();    log("uri: %s", uri.toString());    let filepath = URIUtils_uriToFile(uri);    log(filepath);    var cr = context.getContentResolver();    switch (requestCode) {      case imgRequestCode:        log("图片");        var bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri));        log("bitmap: %s", bitmap);        ui.parentView.removeAllViews();        var childView = ui.inflate(<img></img>, ui.parentView);        ui.parentView.addView(childView);        childView.setImageBitmap(bitmap);        break;      case audioRequestCode:        log("音频");        media.playMusic(filepath);        toastLog("播放 10 秒钟");        setTimeout(function () {          media.stopMusic();          toastLog("停止播放");        }, 10000);        break;      case videoRequestCode:        log("视频");        ui.parentView.removeAllViews();        var childView = ui.inflate(<VideoView></VideoView>, ui.parentView);        ui.parentView.addView(childView);        childView.setVideoPath(filepath);        childView.start();        break;      case imgAndVideoRequestCode:        log("图片或视频");        ui.parentView.removeAllViews();        let fileType = getFileType(filepath);        if (fileType === "mp4") {          log("是视频");          var childView = ui.inflate(<VideoView></VideoView>, ui.parentView);          ui.parentView.addView(childView);          childView.setVideoPath(filepath);          childView.start();        } else {          log("是图片");          var bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri));          var childView = ui.inflate(<img></img>, ui.parentView);          ui.parentView.addView(childView);          childView.setImageBitmap(bitmap);        }        break;      case imgAnyFileRequestCode:        log("任意文件");        break;      default:        log("其他");        break;    }  }});// ==============自定义函数================================function getFileType(filePath) {  // 查看文件头请使用软件: HexEditXP  importClass("java.util.HashMap");  importClass(java.io.FileInputStream);  importClass(java.lang.StringBuilder);  let mFileTypes = new HashMap();  mFileTypes.put("ffd8ffe000104a464946", "jpg"); //JPEG (jpg)  mFileTypes.put("89504e470d0a1a0a0000", "png"); //PNG (png)  mFileTypes.put("47494638396126026f01", "gif"); //GIF (gif)  mFileTypes.put("49492a00227105008037", "tif"); //TIFF (tif)  mFileTypes.put("424d228c010000000000", "bmp"); //16色位图(bmp)  mFileTypes.put("424d8240090000000000", "bmp"); //24位位图(bmp)  mFileTypes.put("424d8e1b030000000000", "bmp"); //256色位图(bmp)  mFileTypes.put("41433130313500000000", "dwg"); //CAD (dwg)  mFileTypes.put("3c21444f435459504520", "html"); //HTML (html)  mFileTypes.put("3c21646f637479706520", "htm"); //HTM (htm)  mFileTypes.put("48544d4c207b0d0a0942", "css"); //css  mFileTypes.put("696b2e71623d696b2e71", "js"); //js  mFileTypes.put("7b5c727466315c616e73", "rtf"); //Rich Text Format (rtf)  mFileTypes.put("38425053000100000000", "psd"); //Photoshop (psd)  mFileTypes.put("46726f6d3a203d3f6762", "eml"); //Email [Outlook Express 6] (eml)  mFileTypes.put("d0cf11e0a1b11ae10000", "doc"); //MS Excel 注意：word、msi 和 excel的文件头一样  mFileTypes.put("d0cf11e0a1b11ae10000", "vsd"); //Visio 绘图  mFileTypes.put("5374616E64617264204A", "mdb"); //MS Access (mdb)  mFileTypes.put("252150532D41646F6265", "ps");  mFileTypes.put("255044462d312e350d0a", "pdf"); //Adobe Acrobat (pdf)  mFileTypes.put("2e524d46000000120001", "rmvb"); //rmvb/rm相同  mFileTypes.put("464c5601050000000900", "flv"); //flv与f4v相同  mFileTypes.put("00000020667479706d70", "mp4");  mFileTypes.put("49443303000000002176", "mp3");  mFileTypes.put("000001ba210001000180", "mpg"); //  mFileTypes.put("3026b2758e66cf11a6d9", "wmv"); //wmv与asf相同  mFileTypes.put("52494646e27807005741", "wav"); //Wave (wav)  mFileTypes.put("52494646d07d60074156", "avi");  mFileTypes.put("4d546864000000060001", "mid"); //MIDI (mid)  mFileTypes.put("504b0304140000000800", "zip");  mFileTypes.put("526172211a0700cf9073", "rar");  mFileTypes.put("235468697320636f6e66", "ini");  mFileTypes.put("504b03040a0000000000", "jar");  mFileTypes.put("4d5a9000030000000400", "exe"); //可执行文件  mFileTypes.put("3c25402070616765206c", "jsp"); //jsp文件  mFileTypes.put("4d616e69666573742d56", "mf"); //MF文件  mFileTypes.put("3c3f786d6c2076657273", "xml"); //xml文件  mFileTypes.put("494e5345525420494e54", "sql"); //xml文件  mFileTypes.put("7061636b616765207765", "java"); //java文件  mFileTypes.put("406563686f206f66660d", "bat"); //bat文件  mFileTypes.put("1f8b0800000000000000", "gz"); //gz文件  mFileTypes.put("6c6f67346a2e726f6f74", "properties"); //bat文件  mFileTypes.put("cafebabe0000002e0041", "class"); //bat文件  mFileTypes.put("49545346030000006000", "chm"); //bat文件  mFileTypes.put("04000000010000001300", "mxp"); //bat文件  mFileTypes.put("504b0304140006000800", "docx"); //docx文件  mFileTypes.put("d0cf11e0a1b11ae10000", "wps"); //WPS文字wps、表格et、演示dps都是一样的  mFileTypes.put("6431303a637265617465", "torrent");  mFileTypes.put("6D6F6F76", "mov"); //Quicktime (mov)  mFileTypes.put("FF575043", "wpd"); //WordPerfect (wpd)  mFileTypes.put("CFAD12FEC5FD746F", "dbx"); //Outlook Express (dbx)  mFileTypes.put("2142444E", "pst"); //Outlook (pst)  mFileTypes.put("AC9EBD8F", "qdf"); //Quicken (qdf)  mFileTypes.put("E3828596", "pwl"); //Windows Password (pwl)  mFileTypes.put("2E7261FD", "ram"); //Real Audio (ram)  mFileTypes.put("null", null); //null  function getFileType(filePath) {    filePath = java.lang.String(filePath);    let keySearch = getFileHeader(filePath);    fileType = mFileTypes.get(keySearch);    if (!fileType) {      let keyList = mFileTypes.keySet().iterator();      let keySearchChild = keySearch.substring(10, keySearch.length);      while (keyList.hasNext()) {        let key = keyList.next();        key = java.lang.String(key);        if (key.contains(keySearchChild)) {          let fileSuffix = mFileTypes.get(key);          return fileSuffix;        }      }    }    return fileType;  }  //获取文件头信息  function getFileHeader(filePath) {    let is = null;    let value = null;    try {      let is = new FileInputStream(filePath);      let b = util.java.array("byte", 10);      is.read(b, 0, b.length);      value = bytesToHexString(b);    } catch (e) {      log(e);    } finally {      if (null != is) {        try {          is.close();        } catch (e) {          log(e);        }      }    }    return value;  }  // arr =["0","0","0","18","66","74","79","70","6d","70"]  function bytesToHexString(src) {    let arr = [];    let stringBuilder = new StringBuilder();    for (let i = 0; i < src.length; i++) {      let v = src[i] & 0xff;      let hv = java.lang.Integer.toHexString(v);      // hv = java.lang.String()      if (hv.length < 2) {        stringBuilder.append("0");      }      stringBuilder.append(hv);      arr.push(hv);    }    return stringBuilder.toString();  }  let fileType = getFileType(filePath);  return fileType;}function URIUtils_uriToFile(uri) {  //Source : https://www.cnblogs.com/panhouye/archive/2017/04/23/6751710.html  var r = null,    cursor,    column_index,    selection = null,    selectionArgs = null,    isKitKat = android.os.Build.VERSION.SDK_INT >= 19,    docs;  if (uri.getScheme().equalsIgnoreCase("content")) {    if (isKitKat && android.provider.DocumentsContract.isDocumentUri(activity, uri)) {      if (String(uri.getAuthority()) == "com.android.externalstorage.documents") {        docs = String(android.provider.DocumentsContract.getDocumentId(uri)).split(":");        if (docs[0] == "primary") {          return android.os.Environment.getExternalStorageDirectory() + "/" + docs[1];        }      } else if (String(uri.getAuthority()) == "com.android.providers.downloads.documents") {        uri = android.content.ContentUris.withAppendedId(          android.net.Uri.parse("content://downloads/public_downloads"),          parseInt(android.provider.DocumentsContract.getDocumentId(uri))        );      } else if (String(uri.getAuthority()) == "com.android.providers.media.documents") {        docs = String(android.provider.DocumentsContract.getDocumentId(uri)).split(":");        if (docs[0] == "image") {          uri = android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI;        } else if (docs[0] == "video") {          uri = android.provider.MediaStore.Video.Media.EXTERNAL_CONTENT_URI;        } else if (docs[0] == "audio") {          uri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;        }        selection = "_id=?";        selectionArgs = [docs[1]];      }    }    try {      cursor = activity.getContentResolver().query(uri, ["_data"], selection, selectionArgs, null);      if (cursor && cursor.moveToFirst()) {        r = String(cursor.getString(cursor.getColumnIndexOrThrow("_data")));      }    } catch (e) {      log(e);    }    if (cursor) cursor.close();    return r;  } else if (uri.getScheme().equalsIgnoreCase("file")) {    return String(uri.getPath());  }  return null;}