android - how to add images from URL to ListBox -

-

i want load images url list in listbox items, code retrieve urls 

var  ljsonarray : tjsonarray;  lentity: tbackendentityvalue;  : integer; begin  try   ljsonarray := tjsonarray.create;   backendstorage1.storage.queryobjects('list', [], ljsonarray);    := 0 ljsonarray.count-1     begin      listbox4.items.add (ljsonarray.items[i].getvalue<string>('pictures'));     end;     ljsonarray.free;  end;  end;

update 1

procedure tform1.button1click(sender: tobject); var  lbitem    : tlistboxitem;  i: integer;  http : tidhttp;  stream : tmemorystream; begin  http := tidhttp.create(nil); try  := 0 listbox1.items.count-1   begin    lbitem := tlistboxitem.create(nil);    lbitem.parent := listbox2;    lbitem.height := 100;    stream := tmemorystream.create;    http.get(listbox1.items.strings[i], stream);    lbitem.itemdata.bitmap.loadfromstream(stream);    end;    stream.free;   http.free; end; end;

i tried loading pictures in listbox, however, there items added without pictures !

after tidhttp.get() downloads image tmemorystream, need seek stream position 0 before it, loading bitmap. , add try..except block handle download errors.

also, should using second try..finally block freeing tmemorystream.

procedure tform1.button1click(sender: tobject); var  lbitem    : tlistboxitem;  i: integer;  http : tidhttp;  stream : tmemorystream; begin  http := tidhttp.create(nil); try  := 0 listbox1.items.count-1   begin    lbitem := tlistboxitem.create(nil);    lbitem.parent := listbox2;    lbitem.height := 100;    stream := tmemorystream.create;    try      try        http.get(listbox1.items.strings[i], stream);        stream.position := 0; // <-- add        lbitem.itemdata.bitmap.loadfromstream(stream);      except        // else      end;         stream.free;    end;   end;    http.free;  end; end;

Comments

Post a Comment

Popular posts from this blog

ios - RestKit 0.20 — CoreData: error: Failed to call designated initializer on NSManagedObject class (again) -

-
this error has shown on many times, seems. prominent answer issue seems restkit 0.20 — coredata: error: failed call designated initializer on nsmanagedobject class however, solution posted doesn't work me. let's start beginning: i want upload file server. want parse response make sure uploaded. if not, try again later. model has boolean variable called nsnumber *senttoserver purpose (in coredata, bool saved nsnumber ) . because don't know whether sending going successful, save entity coredata model first before sending via restkit. when post request successful, server returns json string this: {"id":14,"created":true} notice that, of course, id not set on coredata model yet, both id , created new informations model. here's model: @interface recording : nsmanagedobject @property (nonatomic, retain) nsstring * audiofilepath; @property (nonatomic, retain) nsdate * createdat; @property (nonatomic, retain) nsstring * deviceid; @...
Read more

java - Digest auth with Spring Security using javaconfig -

-
so i'm trying create digest authentication spring following documentation trying translate xml "requirements" in java requirements. let's have xml in docs: <bean id="digestfilter" class= "org.springframework.security.web.authentication.www.digestauthenticationfilter"> <property name="userdetailsservice" ref="jdbcdaoimpl"/> <property name="authenticationentrypoint" ref="digestentrypoint"/> <property name="usercache" ref="usercache"/> </bean> <bean id="digestentrypoint" class= "org.springframework.security.web.authentication.www.digestauthenticationentrypoint"> <property name="realmname" value="contacts realm via digest authentication"/> <property name="key" value="acegi"/> <property name="noncevalidityseconds" value="10"/> </b...
Read more

laravel - PDOException in Connector.php line 55: SQLSTATE[HY000] [1045] Access denied for user 'root'@'localhost' (using password: YES) -

-
my .env: app_env=local app_debug=true app_key=myappkey app_url=http://localhost db_connection=mysql db_host=localhost db_port=3306 db_database=gestiontaller db_username=root db_password='root' cache_driver=file session_driver=file queue_driver=sync redis_host=127.0.0.1 redis_password=null redis_port=6379 mail_driver=smtp mail_host=mailtrap.io mail_port=2525 mail_username=null mail_password=null mail_encryption=null i've tried password ", ' , without, restarting server every time. i've tried changing localhost 172.0.0.1. yes, password correct, running mysql -u root -p introducing password root in prompt can go mysql. users table: +------------------+-----------+ | user | host | +------------------+-----------+ | debian-sys-maint | localhost | | mysql.sys | localhost | | root | localhost | | root1 | localhost | +------------------+-----------+ i've added homestead.yaml this: database_port: 3306 ...
Read more