How to get everything except the fragment (row number) from an android content provider uri?

Question

I would like to retrieve a ContentURI with appended id and be able to strip the id out.

In other words, I have a Content URI such as:

   org.mycontentproviderAuthority/path1/path2/3 

and I would like to get

   org.mycontentproviderAuthority/path1/path2/

Is it possible to do that preferably with Uri methods? I mean I guess I could use a String tokenizer to remove the last digit, but Id assume that a uri api for that would be safer.

I tried uri.getAuthority() + uri.getPath() but that gives me back the whole ContentUri.

Answer 1

You might use the following:

static public Uri getUriWithoutLastNPathParts(final Uri uri, final int n) {
    final List<String> segments = uri.getPathSegments();
    final String[] newSegments = new String[segments.size() - n];

    final Uri.Builder builder = new Uri.Builder();
    builder.encodedAuthority(uri.getAuthority());
    builder.encodedPath(uri.getPath());
    builder.encodedQuery(uri.getQuery());

    // no "appendPath", it messes up the thing
    for (int i = 0; i < newSegments.length; i++) {
        newSegments[i] = segments.get(i);
    }
    builder.encodedPath(TextUtils.join("/", newSegments));

    return builder.build();
}

Usage:

Uri uri = Uri.parse("org.mycontentproviderAuthority/path1/path2/3");
Log.i("Segments", uri + " " + getUriWithoutLastNPathParts(uri, 1));

uri = Uri.parse("org.mycontentproviderAuthority/path1/path2/3?foo=bar");
Log.i("Segments", uri + " " + getUriWithoutLastNPathParts(uri, 2));