Android 打开系统文件管理器，并返回选中文件的路径

概述1.进入文件管理器privatevoidintoFileManager(){Intentintent=newIntent(Intent.ACTION_GET_CONTENT);intent.setType("*/*");//无类型限制//有类型限制是这样的://intent.setType(“image/*”);//选择图片//    intent.

1.进入文件管理器

private voID intofileManager() {        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);        intent.setType("*/*");//无类型限制//        有类型限制是这样的://        intent.setType(“image/*”);//选择图片//        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.setType(“vIDeo/*;image/*”);//同时选择视频和图片         intent.addcategory(Intent.category_OPENABLE);        startActivityForResult(intent, 1);    }

 

2.返回结果

 

    @OverrIDe    protected voID onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {        super.onActivityResult(requestCode, resultCode, data);        String path;        if (resultCode == Activity.RESulT_OK) {            Uri uri = data.getData();            if ("file".equalsIgnoreCase(uri.getScheme())){//使用第三方应用打开                path = uri.getPath();                mfilePathTv.setText(path);                Log.d("queryfilepath", "返回结果1: " + path);                return;            }            if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT) {//4.4以后                path = fileChooseUtil.getPath(this, uri);                mfilePathTv.setText(path);                Log.d("queryfilepath", "返回结果2: " + path);             } else {//4.4以下下系统调用方法                path = fileChooseUtil.getRealPathFromURI(uri);                mfilePathTv.setText(path);                Log.d("queryfilepath", "返回结果3: " + path);             }        }     }

3.用到的自定义工具类
 

public class fileChooseUtil {     private static Context context;    private static fileChooseUtil util = null;     private fileChooseUtil(Context context) {        this.context = context;    }     public static fileChooseUtil getInstance(Context context) {        if (util == null) {            util = new fileChooseUtil(context);        }        return util;    }     /**     * 对外接口  获取uri对应的路径     *     * @param uri     * @return     */    public String getChoosefileResultPath(Uri uri) {        String choosefilePath = null;        if ("file".equalsIgnoreCase(uri.getScheme())) {//使用第三方应用打开            choosefilePath = uri.getPath();            Toast.makeText(context, choosefilePath, Toast.LENGTH_SHORT).show();            return choosefilePath;        }        if (Build.VERSION.SDK_INT > Build.VERSION_CODES.KITKAT) {//4.4以后            choosefilePath = getPath(context, uri);        } else {//4.4以下下系统调用方法            choosefilePath = getRealPathFromURI(uri);        }        return choosefilePath;    }     public static String getRealPathFromURI(Uri contentUri) {        String res = null;        String[] proj = {MediaStore.Images.Media.DATA};        Cursor cursor = context.getContentResolver().query(contentUri, proj, null, null, null);        if (null != cursor && cursor.movetoFirst()) {            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);            res = cursor.getString(column_index);            cursor.close();        }        return res;    }     /**     * 专为AndroID4.4设计的从Uri获取文件绝对路径，以前的方法已不好使     */    @Suppresslint("NewAPI")    public static String getPath(final Context context, final Uri uri) {         final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;         // documentProvIDer        if (isKitKat && documentsContract.isdocumentUri(context, uri)) {            // ExternalStorageProvIDer            if (isExternalStoragedocument(uri)) {                final String docID = documentsContract.getdocumentID(uri);                final String[] split = docID.split(":");                final String type = split[0];                 if ("primary".equalsIgnoreCase(type)) {                    return Environment.getExternalStorageDirectory() + "/" + split[1];                 }            }            // DownloadsProvIDer            else if (isDownloadsdocument(uri)) {                final String ID = documentsContract.getdocumentID(uri);                final Uri contentUri = ContentUris.withAppendedID(Uri.parse("content://downloads/public_downloads"), Long.valueOf(ID));                return getDataColumn(context, contentUri, null, null);             }            // MediaProvIDer            else if (isMediadocument(uri)) {                final String docID = documentsContract.getdocumentID(uri);                final String[] split = docID.split(":");                final String type = split[0];                 Uri contentUri = null;                if ("image".equals(type)) {                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;                 } else if ("vIDeo".equals(type)) {                    contentUri = MediaStore.VIDeo.Media.EXTERNAL_CONTENT_URI;                 } else if ("audio".equals(type)) {                    contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;                 }                 final String selection = "_ID=?";                final String[] selectionArgs = new String[]{split[1]};                 return getDataColumn(context, contentUri, selection, selectionArgs);             }         }        // MediaStore (and general)        else if ("content".equalsIgnoreCase(uri.getScheme())) {            return getDataColumn(context, uri, null, null);         }        // file        else if ("file".equalsIgnoreCase(uri.getScheme())) {            uri.getPath();         }        return null;    }     private static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {        Cursor cursor = null;        final String column = "_data";        final String[] projection = {column};        try {            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,                    null);            if (cursor != null && cursor.movetoFirst()) {                final int column_index = cursor.getColumnIndexOrThrow(column);                return cursor.getString(column_index);            }        } finally {            if (cursor != null)                cursor.close();        }        return null;    }     /**     * @param uri The Uri to check.     * @return Whether the Uri authority is ExternalStorageProvIDer.     */    private static boolean isExternalStoragedocument(Uri uri) {        return "com.androID.externalstorage.documents".equals(uri.getAuthority());    }     /**     * @param uri The Uri to check.     * @return Whether the Uri authority is DownloadsProvIDer.     */    private static boolean isDownloadsdocument(Uri uri) {        return "com.androID.provIDers.downloads.documents".equals(uri.getAuthority());    }     /**     * @param uri The Uri to check.     * @return Whether the Uri authority is MediaProvIDer.     */    private static boolean isMediadocument(Uri uri) {        return "com.androID.provIDers.media.documents".equals(uri.getAuthority());    }}

 

记得动态申请 sd 卡 等读写权限.

 

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Android 打开系统文件管理器，并返回选中文件的路径

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