eclipse - R cannot be resolved - Android error -

-

i downloaded , installed new android sdk. wanted create simple application test drive it.

the wizard created code:

package eu.mauriziopz.gps;  import android.app.activity; import android.os.bundle;  public class ggps extends activity {     /** called when activity first created. */     @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.main);     } }

but eclipse gives me error

r cannot resolved

on line

setcontentview(r.layout.main);

why?

ps: have xml file named main.xml under res/layout/.

after tracking down problem well, found note in android documentation:

http://source.android.com/source/using-eclipse.html

*note: eclipse likes add "import android.r" statement @ top of files use resources, when ask eclipse sort or otherwise manage imports. cause make break. out these erroneous import statements , delete them.*

while going through android sample tutorials, use ctrl + shift + o command "organize imports" , generate missing import statements. generate incorrect import statement hide r.java class automatically generated when build.


Comments

Post a Comment

Popular posts from this blog

Android : Making Listview full screen -

-
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".mainactivity"> <edittext android:layout_margintop="5dp" android:layout_width="match_parent" android:layout_height="50dp" android:background="@drawable/location_edittext" android:id="@+id/locationeditext" android:textsize="15sp" android:textcolor="#999" android:paddingleft="15dp" /> <com.example.ravi_gupta.slider.viewpagercustomduration android:layout_width="wrap_content" android:layout_height="0dp" android:id="@+id/viewpager" android:scrollbarstyle="outsideoverlay" android:layout_weight="0.5...
Read more

javascript - Parse JSON from the body of the POST -

-
i'm using cameratag.com record video on website. service can send json response server can save data database. don't know how proceed here: the documentation states please note json repsonse passed in body of post , not form parameters. here example of how parse response in ruby: data = json.parse(request.raw_post) video_uuid = data["uuid"] but don't know how data on javascript. i'm not experienced in js please bare me :) post sample: { "uuid": "00012710-4b65-0131-ffe6-22000a499ea4", "camera_uuid": "98373a20-79ee-0130-3e42-1231390fcc11", "created_at": "2013-12-20t05:25:02.000z", "percent_complete": 100, "short_code": "kktb4q", "metadata": { }, "state": "published", "recorded_from": "http://singwho.com", "publish_type": null, "formats": [ { "name...
Read more

Automatically Create Database in Entity Framework 6 with Automatic Migrations Disabled -

-
i able automatically create new database, if not exist, using code-first ef6 automatic migrations disabled. if recall correctly, before automatic migrations existed in entity framework, worked fine. however, in ef6, receive following exception: an exception of type 'system.data.entity.migrations.infrastructure.automaticmigrationsdisabledexception' occurred in entityframework.dll not handled in user code additional information: unable update database match current model because there pending changes , automatic migration disabled. either write pending model changes code-based migration or enable automatic migration. set dbmigrationsconfiguration.automaticmigrationsenabled true enable automatic migration. to verify exception not caused external factor in production project, created new test project. however, same exception. for database context, have: public class mycontext : dbcontext { public dbset<entity> entities { get; set; } ...
Read more