android - Picasso IllegalArgumentException -


i'm trying use picasso load facebook photos listview.

i'm getting "java.lang.illegalargumentexception: target must not null"

on line:

.into(holder.userpicture);

if userpicture imageview 'target', don't understand. guess has adapter, can't figure out what.

all appreciated!

edit

i found problem. made careless mistake. on line, forgot convertview part:

holder.userpicture=(imageview)findviewbyid(r.id.userpicture);

logcat:

06-01 16:37:14.392: e/androidruntime(7885): java.lang.illegalargumentexception: target must not null. 06-01 16:37:14.392: e/androidruntime(7885):     @ com.squareup.picasso.requestcreator.into(requestcreator.java:479) 06-01 16:37:14.392: e/androidruntime(7885):     @ com.squareup.picasso.requestcreator.into(requestcreator.java:462) 06-01 16:37:14.392: e/androidruntime(7885):     @ com.example.mywebsite.allproductsactivity$myadapter.getview(allproductsactivity.java:327)

myadapter:

public class myadapter extends arrayadapter<hashmap<string, string>> {      context context;     int resourceid;     layoutinflater inflater;     private context mcontext;       arraylist<hashmap<string, string>>  items;     public myadapter (context context, int resourceid, arraylist<hashmap<string, string>> items)     {         super(context, resourceid, items);         mcontext = context;         this.items =items;         inflater = (layoutinflater)context.getsystemservice(context.layout_inflater_service);     }      @override     public view getview(int position, view convertview, viewgroup parent){         final viewholder holder;         if (convertview == null){              convertview = inflater.inflate(r.layout.list_item, null);              holder = new viewholder();             holder.name = (textview)convertview.findviewbyid(r.id.name);             holder.userpicture=(imageview)findviewbyid(r.id.userpicture);             convertview.settag(holder);          } else {              holder = (viewholder)convertview.gettag();         }          hashmap<string,string> item = (hashmap<string,string> ) items.get(position);         if (item != null)         {              string facebookprofilepicurl = "http://graph.facebook.com/"+tag_facebookid+"/picture?width=100&height=100";             picasso.with(mcontext).load(facebookprofilepicurl) .into(holder.userpicture);              holder.name.settext(item.get(tag_facebookid));           }          return convertview;     }      public class viewholder     {         textview    name;         imageview userpicture;     } }

presumably, holder.userpicture null. either res/layout/list_item not have widget named userpicture, or need clean project (e.g., project > clean eclipse main menu).

also, please use three-parameter version of inflate(), not run problems if change row layout use relativelayout root.


Comments

Post a Comment

Popular posts from this blog

commonjs - How to write a typescript definition file for a node module that exports a function? -

consider, toml node module can use: // toml.d.ts declare module toml { export function parse(value:string):any; } declare module "toml" { export = toml; } then: /// <reference path="../../../../../defs/toml/toml.d.ts"/> import toml = require('toml'); toml.parse(...); however, node module export single function, such 'glob' ( https://github.com/isaacs/node-glob ). the node usage of module be: var glob = require("glob") glob("*.js", {}, callback(err, files) { ... }); you'd naively expect this: // glob.d.ts declare function globs(paths:string, options:any, callback:{(err:any, files:string[]):void; ...but because typescripts 'import' semantics bit strange, seems can use 'import .. = require()' statement alias modules . trying call: /// <reference path="../../../../../defs/glob/glob.d.ts"/> import blog = require('glob'); results in: error ts2072: mod
Read more

openid - Okta: Failed to get authorization code through API call -

i'm integrating okta own idp server using okta's api. i'm implementing authorization code flow following steps below: in own server, use /api/v1/authn endpoint sessiontoken. use sessiontoken obtain authorization calling endpoint: /oauth2/v1/authorize?client_id=" + clientid + "&sessiontoken=" + sessiontoken + "&response_type=code&response_mode=query&scope=openid&redirect_uri=" + redirecturl + "&state=evanyang&nonce=" it's supposed return response status code 302 , location header containing redirect url code value. however, keep getting response status code 200 , without location header, html body saying "you using unsupported browser." , "javascript disabled on browser." according api documentation: http://developer.okta.com/docs/api/resources/oidc.html#authentication-request , sessiontoken parameter sufficient this: an okta one-time sessiontoken. allows api-based
Read more

thorough guide for profiling racket code -

did googling ("racket profiling", "racket measure performance"), didn't find , there no examples in docs. did google "profile" search on htdp - no luck. (profile (f ...)) output isn't obvious other small snippets. ideally want python's python -m cprofile usage examples. when search "python profiling", both duckduckgo , google give top result: 26.4. python profilers . (although scanned quickly, seems more of reference "thorough usage guide" examples. if had else in mind, perhaps please link that?) the equivalent racket documentation be: profile: statistical profiler . a usage example: #lang racket (require profile) (profile-thunk (thunk (function-to-profile arg0 arg1) )) here (thunk e) convenience (lambda () e) . bigger example: #lang racket (module mod racket (provide f) (define (f) (for/list ([i 10000]) i))) (require (prefix-in mod: 'mod)) (define (f) (for ([i 10000
Read more