/**
Utility class to aid in matching URIs in content providers.
-<p>To use this class, build up a tree of UriMatcher objects.
-Typically, it looks something like this:
+<p>To use this class, build up a tree of <code>UriMatcher</code> objects.
+For example:
<pre>
private static final int PEOPLE = 1;
private static final int PEOPLE_ID = 2;
private static final int CALLS_ID = 12;
private static final int CALLS_FILTER = 15;
- private static final UriMatcher sURIMatcher = new UriMatcher();
+ private static final UriMatcher sURIMatcher = new UriMatcher(UriMatcher.NO_MATCH);
static
{
- sURIMatcher.addURI("contacts", "/people", PEOPLE);
- sURIMatcher.addURI("contacts", "/people/#", PEOPLE_ID);
- sURIMatcher.addURI("contacts", "/people/#/phones", PEOPLE_PHONES);
- sURIMatcher.addURI("contacts", "/people/#/phones/#", PEOPLE_PHONES_ID);
- sURIMatcher.addURI("contacts", "/people/#/contact_methods", PEOPLE_CONTACTMETHODS);
- sURIMatcher.addURI("contacts", "/people/#/contact_methods/#", PEOPLE_CONTACTMETHODS_ID);
- sURIMatcher.addURI("contacts", "/deleted_people", DELETED_PEOPLE);
- sURIMatcher.addURI("contacts", "/phones", PHONES);
- sURIMatcher.addURI("contacts", "/phones/filter/*", PHONES_FILTER);
- sURIMatcher.addURI("contacts", "/phones/#", PHONES_ID);
- sURIMatcher.addURI("contacts", "/contact_methods", CONTACTMETHODS);
- sURIMatcher.addURI("contacts", "/contact_methods/#", CONTACTMETHODS_ID);
- sURIMatcher.addURI("call_log", "/calls", CALLS);
- sURIMatcher.addURI("call_log", "/calls/filter/*", CALLS_FILTER);
- sURIMatcher.addURI("call_log", "/calls/#", CALLS_ID);
+ sURIMatcher.addURI("contacts", "people", PEOPLE);
+ sURIMatcher.addURI("contacts", "people/#", PEOPLE_ID);
+ sURIMatcher.addURI("contacts", "people/#/phones", PEOPLE_PHONES);
+ sURIMatcher.addURI("contacts", "people/#/phones/#", PEOPLE_PHONES_ID);
+ sURIMatcher.addURI("contacts", "people/#/contact_methods", PEOPLE_CONTACTMETHODS);
+ sURIMatcher.addURI("contacts", "people/#/contact_methods/#", PEOPLE_CONTACTMETHODS_ID);
+ sURIMatcher.addURI("contacts", "deleted_people", DELETED_PEOPLE);
+ sURIMatcher.addURI("contacts", "phones", PHONES);
+ sURIMatcher.addURI("contacts", "phones/filter/*", PHONES_FILTER);
+ sURIMatcher.addURI("contacts", "phones/#", PHONES_ID);
+ sURIMatcher.addURI("contacts", "contact_methods", CONTACTMETHODS);
+ sURIMatcher.addURI("contacts", "contact_methods/#", CONTACTMETHODS_ID);
+ sURIMatcher.addURI("call_log", "calls", CALLS);
+ sURIMatcher.addURI("call_log", "calls/filter/*", CALLS_FILTER);
+ sURIMatcher.addURI("call_log", "calls/#", CALLS_ID);
}
</pre>
-<p>Then when you need to match match against a URI, call {@link #match}, providing
-the tokenized url you've been given, and the value you want if there isn't
-a match. You can use the result to build a query, return a type, insert or
-delete a row, or whatever you need, without duplicating all of the if-else
-logic you'd otherwise need. Like this:
+<p>Then when you need to match against a URI, call {@link #match}, providing
+the URL that you have been given. You can use the result to build a query,
+return a type, insert or delete a row, or whatever you need, without duplicating
+all of the if-else logic that you would otherwise need. For example:
<pre>
- public String getType(String[] url)
+ public String getType(Uri url)
{
- int match = sURIMatcher.match(url, NO_MATCH);
+ int match = sURIMatcher.match(url);
switch (match)
{
case PEOPLE:
}
}
</pre>
-instead of
+instead of:
<pre>
- public String getType(String[] url)
+ public String getType(Uri url)
{
- if (url.length >= 2) {
- if (url[1].equals("people")) {
- if (url.length == 2) {
+ List<String> pathSegments = url.getPathSegments();
+ if (pathSegments.size() >= 2) {
+ if ("people".equals(pathSegments.get(1))) {
+ if (pathSegments.size() == 2) {
return "vnd.android.cursor.dir/person";
- } else if (url.length == 3) {
+ } else if (pathSegments.size() == 3) {
return "vnd.android.cursor.item/person";
... snip ...
return "vnd.android.cursor.dir/snail-mail";
- } else if (url.length == 3) {
+ } else if (pathSegments.size() == 3) {
return "vnd.android.cursor.item/snail-mail";
}
}