What is an URI in android -

-

i have come across android object makes no sense me. can't understand uri?

well checked official documentation , said:

immutable uri reference. uri reference includes uri , fragment, component of uri following '#'. builds , parses uri references conform rfc 2396.

the problem is, can't use uri explain uri! totally confused.

i did research , came across this article. said

uri nothing

could please explain me mean!

  1. q: "uri"?

    a: technical meaning of "uri" defined in rfc 2396:

a uniform resource identifier (uri) compact sequence of characters identifies abstract or physical resource.

  1. q: android "uri" class?

    a: here javadoc android.net.uri

  2. q: need android "uri" class for?

    a: @ "content providers" section of android documentation:

http://developer.android.com/guide/topics/providers/content-providers.html

content providers manage access structured set of data. encapsulate data, , provide mechanisms defining data security. content providers standard interface connects data in 1 process code running in process.

for example...

public final contentproviderclient acquirecontentproviderclient (uri uri)

returns contentproviderclient associated contentprovider services content @ uri, starting provider if necessary.

if you're curious, here's tim berners-lee had uris (he's guy invented them ;)):

http://www.w3.org/designissues/axioms.html#uri

universal resource identifiers

the web universal information space. space in sense things in have address. "addresses", "names", or call them here identifiers, subject of article. called universal resource identifiers (uris).

an information object "on web" if has uri. objects have uris known "first class objects" (fcos). web works best when information object of value , identity first class object. if not have uri, can't refer it, , power of web less that.

by universal mean web declared able contain in principle every bit of information accessible networks. designed able include existing information systems such ftp, , able in future extendable include new information system.

the uri schemes identify things various different types of information object, wich play different roles in protocols. identify services, connection end points, , on, fundamental underlying architectural notion of information objects - otherwise known generic documents. these can represented strings of bits. information object conveys - may art, poetry, sensor values or mathematical equations.


Comments

Post a Comment

Popular posts from this blog

python - pip install -U PySide error -

-
does know how avoid following error when running pip install -u pyside per official website instructions here: https://pypi.python.org/pypi/pyside/#installing-pyside-on-a-mac-os-x-system note have done brew install qt successfully. you using pip version 7.0.3, version 7.1.2 available. should consider upgrading via 'pip install --upgrade pip' command. collecting pyside using cached pyside-1.2.4.tar.gz installing collected packages: pyside running setup.py install pyside complete output command /applications/anaconda/bin/python -c "import setuptools, tokenize;__file__='/private/var/folders/dy/ttgqhqqx3g9bsbsnqnxsk2z80000gq/t/pip-build-cpxemt/pyside/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /var/folders/dy/ttgqhqqx3g9bsbsnqnxsk2z80000gq/t/pip-0r7hri-record/install-record.txt --single-version-externally-managed --compile: ...
Read more

arrays - C++ error: a brace-enclosed initializer is not allowed here before ‘{’ token -

-
simple question: i'm trying initialize array within c++ class declaration: using namespace std; #include <string> class myclass{ public: string myarray[] = {"a","b","c"}; }; and i'm getting error: error: brace-enclosed initializer not allowed here before ‘{’ token no, without complied c++11 compiler, cannot initialize member array in declaration. have initialize array member in constructor. , don't use open array if know number of elements initialize array.
Read more

cytoscape.js - How to add nodes to Dagre layout with Cytoscape -

-
i trying add nodes dagre graph through cityscape.js. problem nodes not painted. code have: cy.add({ group: "nodes", data: { id:"n0",name:"n0",weight: 75 }, }); $.ajax(url).done(function(jsontree){ var newnodes=[]; for(var i=1;i<6;i++){ //var child = jsontree.result[i]; newnodes.push( { group: "nodes", data: { id: "n"+i, name:"n"+i}}, { group: "edges", data: { id: "e"+i, source: "n0", target: "n"+i } } ); } cy.add(newnodes); any ideas? have used loaded function reload graph not work. not know if have use specific function reload graph. thank in advance. you need add positions new nodes. cytoscape.js docs : it important note positions of newly added nodes must defined when calling cy.add(). nodes can not placed in graph without valid position — otherwise not displayed. yo...
Read more