autojs之选择文件

本文主要是介绍autojs之选择文件，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

使用场景

调用手机自带的文件管理选择文件

效果展示

选择文件.png

autojs版本号

autojs版本号.png

功能

可任意选择图片, 音频, 视频
可以更换imgView的图片
可以播放音频
可以播放视频

你将学到以下知识

调用文件管理选择文件
接收文件管理返回的数据
增加或者删除子view
使用文件头判断文件类型
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: HexEditXPimportClass("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"); //cssmFileTypes.put("696b2e71623d696b2e71", "js"); //jsmFileTypes.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); //nullfunction 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.htmlvar 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;
}