使用场景，用来匹配URI，通常用来匹配内容提供器中的URI

使用demo

• 定义URI匹配的code

  private static final int PEOPLE = 1;
  private static final int PEOPLE_ID = 2;
  private static final int PEOPLE_PHONES = 3;
  private static final int PEOPLE_PHONES_ID = 4;
  private static final int PEOPLE_CONTACTMETHODS = 7;
  private static final int PEOPLE_CONTACTMETHODS_ID = 8;
  private static final int DELETED_PEOPLE = 20;
  private static final int PHONES = 9;
  private static final int PHONES_ID = 10;
  private static final int PHONES_FILTER = 14;
  private static final int CONTACTMETHODS = 18;
  private static final int CONTACTMETHODS_ID = 19;
  private static final int CALLS = 11;
  private static final int CALLS_ID = 12;
  private static final int CALLS_FILTER = 15;

• 初始化静态对象 UriMatcher
  private static final UriMatcher sURIMatcher = new UriMatcher(UriMatcher.NO_MATCH);

• 初始化uri和匹配类型规则
  *addURI三个入参，分别为String authority（应用包名）, String path(操作的表单路径), int code(当调用UriMatch的match（uri）方法后，会返回uri匹配成功后返回的code码，如果没有匹配match方法将返回-1即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);
  }

  • 这里需要注意，在sdk版本18开始，path参数支持以'/' 开头，例如

sURIMatcher.addURI("contacts", "/people", PEOPLE);

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