Android Oreo如何从uri获取真实路径?

时间:2018-10-03 07:02:55

标签: android android-8.0-oreo file-sharing file-copying android-8.1-oreo

我正在使用此代码从URI获取真实路径。它在工作 棉花糖,但不在奥利奥(Oreo)中:

private String getPathNew(Activity activity, Uri uri) { 
    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(activity, contentUri, null, null);
    }
    return null;
}

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);
        }
    } finally {
        if (cursor != null)
            cursor.close();
    }
    return null;
}

我在做什么错了?

1 个答案:

答案 0 :(得分:0)

 public static String getRealPathFromURI(Context context, Uri contentUri) {
    String[] proj = {MediaStore.Images.Media.DATA};
    Cursor cursor = context.getContentResolver().query(contentUri, proj, null, null, 
                                                                               null);
    if (cursor != null) {
        int column_index = 
        cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    }
    return null;
}