{"id":1527,"date":"2022-08-30T15:17:16","date_gmt":"2022-08-30T15:17:16","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2013\/11\/26\/problem-about-baseadapter-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:17:16","modified_gmt":"2022-08-30T15:17:16","slug":"problem-about-baseadapter-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/problem-about-baseadapter-collection-of-common-programming-errors\/","title":{"rendered":"problem about baseadapter-Collection of common programming errors"},"content":{"rendered":"<ul>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/5efc50f20240556dcb3aaed2ee386e40?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nmmBs<br \/>\nandroid listview android-lifecycle baseadapter<br \/>\nMy app runs fine besides when the user stops using their phone long enough for the screen to lock, when they unlock it the app crashes and im a bit clueless as to why. Here is the error: here is the lazy adapter:package com.buhz.helpers;import java.util.ArrayList; import java.util.HashMap;import android.app.Activity; import android.content.Context; import android.content.Intent; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.view.View.O<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/graph.facebook.com\/100003069726448\/picture?type=large\" \/><br \/>\nMaulik Sheth<br \/>\nandroid android-asynctask baseadapter<br \/>\nI&#8217;m uing a custom base adapter to get title, link, description,pubdate, guid from rss feeds. i first implemented the application directly using simple array adapter and it worked fine. but on implementing it with custom base adapter i am having app stopped working error.this is my bean class RssItem.javapackage com.maulik.rss;public class RssItem {String _title; String _link; String _description; String _pubdate; String _guid;\/\/ constructor public RssItem(){}\/\/ constructor with parameters public<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/638283b8123f3d5f460ba2751bb1a663?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nViking<br \/>\nandroid listview android-listview baseadapter endless<br \/>\nIm trying to do something like endless adapter but not able to accomplish it and as a result my app is crashing. What i tried to do is that initially i wanted loaded 10items in listview and add foorterview at the end of listview.If user clicks on the footerview than 10 more item is loaded in the listview.But when i start that activity only footerview appears and after few seconds application crashes. I have posted the relevant code below:int questionsPerPage = 10; boolean loadingMore = false; Ar<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/i.stack.imgur.com\/BPK0B.jpg?s=32&amp;g=1\" \/><br \/>\ngroff07<br \/>\nandroid exception adapter popupwindow baseadapter<br \/>\nI&#8217;m trying to use a PopupWindow with an adapter but this exception occurs. I tried to search for something that solve this problem but I didn&#8217;t found anything.Here is the Exception07-18 10:58:27.600: D\/dalvikvm(15218): GC_FOR_ALLOC freed 56K, 3% free 6409K\/6595K, paused 40ms 07-18 10:58:27.600: I\/dalvikvm-heap(15218): Grow heap (frag case) to 6.804MB for 513744-byte allocation 07-18 10:58:27.669: D\/dalvikvm(15218): GC_FOR_ALLOC freed 8K, 3% free 6902K\/7111K, paused 41ms 07-18 10:58:27.749: D\/dal<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/1074f0a031cca12280359231a87662af?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nEric<br \/>\nandroid eclipse listview twitter baseadapter<br \/>\nI was doing a tutorial about a ListView that contains tweets. It worked but now it crashes every time. I checked my the code and its exactly the same as in the tutorial.public class MainActivity extends Activity {Button mBtnDownload;EditText mEtxtUsername;ProgressDialog mProgressDialog;TextView mTxtvUserNameTitle;TextView mTxtvUserName;TextView mTxtvUrlTitle;TextView mTxtvUrl;TextView mTxtvFavouritesCountTitle;TextView mTxtvFavouritesCount;TextView mTxtvDescriptionTitle;TextView mTxtvDescription<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/aefeadab5058b80534401949683a116c?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nGaryjamjohnson<br \/>\nandroid string class android-asynctask baseadapter<br \/>\nThis question is an exact duplicate of:BaseAdapter class wont setAdapter inside Asynctask &#8211; Android3 answersI have an asynctask that gathers comments, usernames, and numbers from a database by using a JSON method inside the doInBackground() method of the Asynctask. These arrays are then converted into strings in the onPostExecute() method. I want these strings to be sent to a class that extends BaseAdapter, how can I send the Strings to another class but still have the BaseAdapter run in the bac<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/aefeadab5058b80534401949683a116c?s=32&amp;d=identicon&amp;r=PG\" \/><br \/>\nGaryjamjohnson<br \/>\nandroid string class android-asynctask baseadapter<br \/>\nThis question is an exact duplicate of:BaseAdapter class wont setAdapter inside Asynctask &#8211; Android3 answersI have an asynctask that gathers usernames, comments, and numbers and puts them into strings. These Strings are then suppose to be used for a BaseAdapter, but when the BaseAdapter is called it says the String variables are empty. Here is my current code,public class DashboardActivity extends ListActivity {String comments[];String usernames[];String numbers[];ListView lstComments;class Crea<\/li>\n<li><img decoding=\"async\" src=\"http:\/\/www.gravatar.com\/avatar\/a9b6c7341fc74048c6c8a3c984b0bb0d?s=32&amp;d=identicon&amp;r=PG&amp;f=1\" \/><br \/>\nkbu<br \/>\njava android arraylist baseadapter<br \/>\nCould anybody explain me, why i have java.lang.NullPointerException when i am trying setAdapter?When i trying set Adapter, my arraylist already filled. What i making wrong?Thx!activity_view_list.xml&lt;LinearLayoutxmlns:android=&#8221;http:\/\/schemas.android.com\/apk\/res\/android&#8221;android:layout_width=&#8221;fill_parent&#8221;android:layout_height=&#8221;fill_parent&#8221;android:orientation=&#8221;vertical&#8221;&gt;&lt;ListViewandroid:id=&#8221;@+id\/lvView&#8221;android:layout_width=&#8221;fill_parent&#8221;android:layout_height=&#8221;fill_parent&#8221;android:layout_weigh<\/li>\n<\/ul>\n<p id=\"rop\"><small>Originally posted 2013-11-26 18:04:23. <\/small><\/p>","protected":false},"excerpt":{"rendered":"<p>mmBs android listview android-lifecycle baseadapter My app runs fine besides when the user stops using their phone long enough for the screen to lock, when they unlock it the app crashes and im a bit clueless as to why. Here is the error: here is the lazy adapter:package com.buhz.helpers;import java.util.ArrayList; import java.util.HashMap;import android.app.Activity; import android.content.Context; [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1527","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/1527","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=1527"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/1527\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=1527"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=1527"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=1527"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}