华为手机选择文件路径uri问题

转载至：https://blog.csdn.net/androidzmm/article/details/82886392

在上传文件功能的时候在文件管理器中选择文件有些打不开，例如在下载文件夹中的，一直找不到原因，最后查到这篇文章成功使用里面的方法解决了

重点就是 添加docId.startsWith("raw:")这个的判断处理

else if ("com.android.providers.downloads.documents".equals(authority)) {
            // 下載目錄
            final String docId = DocumentsContract.getDocumentId(uri);
            if (docId.startsWith("raw:")) {
                final String path = docId.replaceFirst("raw:", "");
                return path;
            }
            final Uri downloadUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.parseLong(docId));
            String path = queryAbsolutePath(context, downloadUri);
            return path;
}

以下为原文章内容

在华为手机上选择图片的时候。拿到一个这样的路径：（华为手机进打开图库-》下载内容-》browser-》图片收藏-》选择图片）

content://com.android.providers.downloads.documents/document/raw:/storage/emulated/0/Download/browser/图片收藏/200832810200350_2.jpg
emmm.这个uri怎么转换都不成功。之前的转换方法：

@TargetApi(Build.VERSION_CODES.KITKAT)
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 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())) {
        return uri.getPath();
    }

    return uri.getPath();
}

public 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);
        }
    } catch (Exception e) {
        e.printStackTrace();
        Log.e(TAG, "GetDataColumnFail", e);
    } finally {
        if (cursor != null)
            cursor.close();
    }
    return null;
}

public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}

public static boolean isDownloadsDocument(Uri uri) {
    return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}

public static boolean isMediaDocument(Uri uri) {
    return "com.android.providers.media.documents".equals(uri.getAuthority());
}

之前一直这么用，直到遇到了这次，之前选择以后的路径都是类似这种：

content://com.android.providers.media.documents/document/image%3A836956
这次的路径是：

content://com.android.providers.downloads.documents/document/raw:/storage/emulated/0/Download/browser/图片收藏/200832810200350_2.jpg
这个会进到isDownloadsDocument这个判断中，代码里是拿到long类型的id.可是我们这个拿到的id是：

raw:/storage/emulated/0/Download/browser/图片收藏/200832810200350_2.jpg"
这样就会报转换错误。

java.lang.NumberFormatException: For input string: "raw:/storage/emulated/0/Download/browser/图片收藏/200832810200350_2.jpg"

找了很多资料，最后找到解决办法。

if (isDownloadsDocument(uri)) {

            final String id = DocumentsContract.getDocumentId(uri);
            if (id.startsWith("raw:")) {
                return id.replaceFirst("raw:", "");
            }
            final Uri contentUri = ContentUris.withAppendedId(
                Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));

            return getDataColumn(context, contentUri, null, null);
        }

我们也可以看到raw后面返回的其实就是真实路径，所以我们直接取出来就好了。

完整的代码：

@SuppressLint("NewApi")
public static String getPathFromUri(final Context context, final Uri uri) {
    if (uri == null) {
        return null;
    }
    // 判斷是否為Android 4.4之後的版本
    final boolean after44 = Build.VERSION.SDK_INT >= 19;
    if (after44 && DocumentsContract.isDocumentUri(context, uri)) {
        // 如果是Android 4.4之後的版本，而且屬於文件URI
        final String authority = uri.getAuthority();
        // 判斷Authority是否為本地端檔案所使用的
        if ("com.android.externalstorage.documents".equals(authority)) {
            // 外部儲存空間
            final String docId = DocumentsContract.getDocumentId(uri);
            final String[] divide = docId.split(":");
            final String type = divide[0];
            if ("primary".equals(type)) {
                String path = Environment.getExternalStorageDirectory().getAbsolutePath().concat("/").concat(divide[1]);
                return path;
            } else {
                String path = "/storage/".concat(type).concat("/").concat(divide[1]);
                return path;
            }
        } else if ("com.android.providers.downloads.documents".equals(authority)) {
            // 下載目錄
            final String docId = DocumentsContract.getDocumentId(uri);
            if (docId.startsWith("raw:")) {
                final String path = docId.replaceFirst("raw:", "");
                return path;
            }
            final Uri downloadUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.parseLong(docId));
            String path = queryAbsolutePath(context, downloadUri);
            return path;
        } else if ("com.android.providers.media.documents".equals(authority)) {
            // 圖片、影音檔案
            final String docId = DocumentsContract.getDocumentId(uri);
            final String[] divide = docId.split(":");
            final String type = divide[0];
            Uri mediaUri = null;
            if ("image".equals(type)) {
                mediaUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
            } else if ("video".equals(type)) {
                mediaUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
            } else if ("audio".equals(type)) {
                mediaUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
            } else {
                return null;
            }
            mediaUri = ContentUris.withAppendedId(mediaUri, Long.parseLong(divide[1]));
            String path = queryAbsolutePath(context, mediaUri);
            return path;
        }
    } else {
        // 如果是一般的URI
        final String scheme = uri.getScheme();
        String path = null;
        if ("content".equals(scheme)) {
            // 內容URI
            path = queryAbsolutePath(context, uri);
        } else if ("file".equals(scheme)) {
            // 檔案URI
            path = uri.getPath();
        }
        return path;
    }
    return null;
}

public static String queryAbsolutePath(final Context context, final Uri uri) {
    final String[] projection = {MediaStore.MediaColumns.DATA};
    Cursor cursor = null;
    try {
        cursor = context.getContentResolver().query(uri, projection, null, null, null);
        if (cursor != null && cursor.moveToFirst()) {
            final int index = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA);
            return cursor.getString(index);
        }
    } catch (final Exception ex) {
        ex.printStackTrace();
        if (cursor != null) {
            cursor.close();
        }
    }
    return null;
}