uni-app调用原生的文件系统管理器（可选取附件上传）

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title></title>
        <style type="text/css">
            #btn{
                display: block;
                 90%;
                height: 50px;
                margin: 0px auto;
            }
        </style>
    </head>
    <body>
        <button id="btn" type="button" class="mui-btn mui-btn-blue mui-btn-block">按钮</button>
        <script type="text/javascript">
            document.querySelector('#btn').addEventListener('click',function () {
                var REQUESTCODE = 1;
                var main = plus.android.runtimeMainActivity();
                var Intent = plus.android.importClass('android.content.Intent');
                var intent = new Intent(Intent.ACTION_GET_CONTENT);

                intent.setType("*/*");//设置类型，任意类型
                //intent.setType("image/*");
                //intent.setType("audio/*"); //选择音频
                //intent.setType("video/*"); //选择视频 （mp4 3gp 是android支持的视频格式）

                intent.addCategory(Intent.CATEGORY_OPENABLE);
                main.startActivityForResult(intent,REQUESTCODE);

                main.onActivityResult = function(requestCode, resultCode, data) { 
                    if (REQUESTCODE == requestCode) {
                        var context = main;
                        plus.android.importClass(data);
                        // 获得文件路径
                        var fileData = data.getData();  
                        var path = plus.android.invoke(fileData, "getPath");
                        console.log("path:"+path);

                        // 判断文件类型
                        var resolver = context.getContentResolver();
                        var fileType = plus.android.invoke(resolver, "getType",fileData);
                        console.log("fileType:"+fileType);
                    }
                }
            })
        </script>
    </body>
</html>

 后来发现获取的地址uri是编码过得，我要获取本地的路径下面是完整版的

//调用原生文件系统管理器并选取文件获取文件地址
window.PickFile = function(callback, acceptType) {//acceptType为你要查的文件类型"image/*"，"audio/*"，"video/*;image/*"  // intent.setType("image/*");//intent.setType("audio/*"); //选择音频//intent.setType("video/*;image/*"); //选择视频 （mp4 3gp 是android支持的视频格式）
    var CODE_REQUEST = 1000;
    var main = plus.android.runtimeMainActivity();
    if(plus.os.name == 'Android') {
        var Intent = plus.android.importClass('android.content.Intent');
        var intent = new Intent(Intent.ACTION_GET_CONTENT);
        intent.addCategory(Intent.CATEGORY_OPENABLE);
        if(acceptType) {
            intent.setType(acceptType);
        } else {
            intent.setType("*/*");
        }
        main.onActivityResult = function(requestCode, resultCode, data) {
            if(requestCode == CODE_REQUEST) {
                var uri = data.getData();
                plus.android.importClass(uri);
                var Build = plus.android.importClass('android.os.Build');
                var isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;

                var DocumentsContract = plus.android.importClass('android.provider.DocumentsContract');
                // DocumentProvider
                if(isKitKat && DocumentsContract.isDocumentUri(main, uri)) {
                        console.log("版本大于 4.4 ");
                    // ExternalStorageProvider
                    if("com.android.externalstorage.documents" == uri.getAuthority()) {
                        var docId = DocumentsContract.getDocumentId(uri);
                        var split = docId.split(":");
                        var type = split[0];

                        if("primary" == type) {
                            var Environment = plus.android.importClass('android.os.Environment');
                            callback(Environment.getExternalStorageDirectory() + "/" + split[1]);
                        } else {
                            var System = plus.android.importClass('java.lang.System');
                            var sdPath = System.getenv("SECONDARY_STORAGE");
                            if(sdPath) {
                                callback(sdPath + "/" + split[1]);
                            }
                        }
                    }
                    // DownloadsProvider
                    else if("com.android.providers.downloads.documents" == uri.getAuthority()) {
                        var id = DocumentsContract.getDocumentId(uri);
                        var ContentUris = plus.android.importClass('android.content.ContentUris');
                        var contentUri = ContentUris.withAppendedId(
                        //    Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
                        Uri.parse("content://downloads/public_downloads"), id);
                        callback(getDataColumn(main, contentUri, null, null));
                    }
                    // MediaProvider
                    else if("com.android.providers.media.documents" == uri.getAuthority()) {
                        var docId = DocumentsContract.getDocumentId(uri);
                        var split = docId.split(":");
                        var type = split[0];

                        var MediaStore = plus.android.importClass('android.provider.MediaStore');
                        if("image" == type) {
                        contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                        } else if("video" == type) {
                        contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
                        } else if("audio" == type) {
                        contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
                        }

                        var selection = "_id=?";
                        var selectionArgs = new Array();
                        selectionArgs[0] = split[1];

                        callback(getDataColumn(main, contentUri, selection, selectionArgs));
                    }
                }
                // MediaStore (and general)
                else if("content" == uri.getScheme()) {
                    callback(getDataColumn(main, uri, null, null));
                }
                // File
                else if("file" == uri.getScheme()) {
                    callback(uri.getPath());
                }
            }
        }
        main.startActivityForResult(intent, CODE_REQUEST);
    }
}

function getDataColumn(main, uri, selection, selectionArgs) {
        plus.android.importClass(main.getContentResolver());
        let cursor = main.getContentResolver().query(uri, ['_data'], selection, selectionArgs,
        null);
        plus.android.importClass(cursor);
        if(cursor != null && cursor.moveToFirst()) {
        var column_index = cursor.getColumnIndexOrThrow('_data');
        var result = cursor.getString(column_index)
        cursor.close();
        return result;
        }
        return null;
}
【推广】 免费学中医，健康全家人
原文地址：https://www.cnblogs.com/lizhao123/p/9951581.html