android - My Database is not working -


i have tried implement database in android , while running application getting stopped without entering in activities. giving log cat below,i need suggestions overcome error.

   08-16 05:40:15.381: e/androidruntime(1096): fatal exception: main    08-16 05:40:15.381: e/androidruntime(1096): java.lang.runtimeexception: unable start activity componentinfo{com.de.vogella.android.sqlite.first/com.de.vogella.android.sqlite.first.testdatabaseactivity}: android.database.sqlite.sqliteexception: near "tablecomments": syntax error (code 1): , while compiling: create tablecomments(_idinteger primary key autoincrementcommenttext not null);    08-16 05:40:15.381: e/androidruntime(1096):  @ android.app.activitythread.performlaunchactivity(activitythread.java:2180)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.app.activitythread.handlelaunchactivity(activitythread.java:2230)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.app.activitythread.access$600(activitythread.java:141)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.app.activitythread$h.handlemessage(activitythread.java:1234)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.os.handler.dispatchmessage(handler.java:99)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.os.looper.loop(looper.java:137)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.app.activitythread.main(activitythread.java:5041)    08-16 05:40:15.381: e/androidruntime(1096):  @ java.lang.reflect.method.invokenative(native method)    08-16 05:40:15.381: e/androidruntime(1096):  @ java.lang.reflect.method.invoke(method.java:511)    08-16 05:40:15.381: e/androidruntime(1096):  @ com.android.internal.os.zygoteinit$methodandargscaller.run(zygoteinit.java:793)    08-16 05:40:15.381: e/androidruntime(1096):  @ com.android.internal.os.zygoteinit.main(zygoteinit.java:560)    08-16 05:40:15.381: e/androidruntime(1096):  @ dalvik.system.nativestart.main(native method)    08-16 05:40:15.381: e/androidruntime(1096): caused by: android.database.sqlite.sqliteexception: near "tablecomments": syntax error (code 1): , while compiling: create tablecomments(_idinteger primary key autoincrementcommenttext not null);    08-16 05:40:15.381: e/androidruntime(1096):  @ android.database.sqlite.sqliteconnection.nativepreparestatement(native method)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.database.sqlite.sqliteconnection.acquirepreparedstatement(sqliteconnection.java:882)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.database.sqlite.sqliteconnection.prepare(sqliteconnection.java:493)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.database.sqlite.sqlitesession.prepare(sqlitesession.java:588)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.database.sqlite.sqliteprogram.<init>(sqliteprogram.java:58)    08-16 05:40:15.381: e/androidruntime(1096):  @ android.database.sqlite.sqlitestatement.<init>(sqlitestatement.java:31)

it says syntax error think couldn't find ..giving code below

     public class mysqlitehelper extends sqliteopenhelper {    public static final string table_comments="comments"; public static final string column_id="_id"; public static final string column_comment="comment"; private static final string database_name="comments.db"; private static int database_version=1;  //database creation  sql statements       private static final string database_create="create table"+table_comments+"       ("+column_id+"integer primary key autoincrement"+column_comment+"text not null);";       public mysqlitehelper(context context) {  super(context, database_name, null, database_version);  // todo auto-generated constructor stub      }        @override      public void oncreate(sqlitedatabase database) {   // todo auto-generated method stub        database.execsql(database_create);        }        @override        public void onupgrade(sqlitedatabase db, int oldversion, int newversion) {    // todo auto-generated method stub   log.w(mysqlitehelper.class.getname(),"upgrading database  version "+         oldversion+"to"+newversion+",which destroy data");        db.execsql("drop table if exists"+table_comments);       oncreate(db);         }      }

you're missing few spaces in create statement.

try using:

private static final string database_create="create table " + table_comments + " (" + column_id + " integer primary key autoincrement " + column_comment + " text not null);"

Comments

Post a Comment

Popular posts from this blog

c# - Send Image in Json : 400 Bad request -

from android trying send image class of data, iis webservice. (c#) the problem 400 bad request . the image being encoded base64 . , placed json rest of class elements. my guess base64 not valid inside json. server not understand it. if set string "" , post accepted fine. so question is, how make base64 valid within json array? ( tried url.encode no success). or how should send image android webservice? gson gson = new gson(); string json = gson.tojson(record); // record has param { string base64photo } how big image? i'm pretty sure surpassing iis json size limit (default 4 mb). check http://geekswithblogs.net/frankw/archive/2008/08/05/how-to-configure-maxjsonlength-in-asp.net-ajax-applications.aspx or http://www.webtrenches.com/post.cfm/iis7-file-upload-size-limits good luck!
Read more

javascript - addthis share facebook and google+ url -

i attempting use addthis create simple url shares whichever current page user on when click share button. of right now, have twitter working. when user clicks, able see url populated in tweet box. when user clicks facebook or google+, url doesn't seem show in share box. <ul class="addthis_toolbox addthis_default_style "> <li><a class="addthis_button_facebook"><img src="/img/facebook-social.png" width="20" height="20" border="0" alt="share" /></a></li> <li><a class="addthis_button_twitter"><img src="/img/twitter-social.png" width="20" height="20" border="0" alt="share" /></a></li> <li><a class="addthis_button_google_plusone_share"><img src="/img/google-social.png" width="20" height="20" border="0" alt="s...
Read more

ios - Show keyboard with UITextField in the input accessory view -

i have buttona , when buttona clicked, want keyboard show uitextfield in inputaccessoryview. there way have keyboard show manually , set inputaccessoryview without having uitextfield initially? thanks. you cannot summon keyboard without object can become first responder. there 2 ways work around: subclass uiview , implement uikeyinput protocol in it. example: in .h file: @interface inputobject : uiview<uikeyinput> @property (nonatomic, copy) nsstring *text; @property (nonatomic, strong) uiview *inputaccessoryview; // must override inputaccessoryview , since it's readonly default @end in .m file, implement protocol: - (bool)canbecomefirstresponder { return yes; } - (bool)hastext { return [self.text length]; } - (void)inserttext:(nsstring *)text { nsstring *selftext = self.text ? self.text : @""; self.text = [selftext stringbyappendingstring:text]; [[nsnotificationcenter defaultcenter] postnotificationname:kinputobjec...
Read more