add this in menifest file
android:configChanges="keyboardHidden|orientation|screenSize"
문제
in my app im using gridview when in portrait mode it shows one column. in landscape mode new layout defined to show 2 column.
this is how the app works.. when app is launched, progress dialog is called to load website name from sqlite database and async is used to load website from sqlite db. the progress dialog is dismissed after the gridview is inflated.
now after loading the website name into gridview the screen orientation changes, it restarts the progress dialog.
i know that on screen orientation change the ondestroy() and then oncreate() are called.
this is my app's src code.
public class RSSReaderActivity extends Activity {
private ProgressDialog pDialog;
ArrayList<HashMap<String, String>> rssFeedList;
RSSParser rssParser = new RSSParser();
RSSFeed rssFeed;
Button add_rss;
// array to trace sqlite ids
String[] sqliteIds;
public static String TAG_ID = "id";
public static String TAG_TITLE = "title";
public static String TAG_LINK = "link";
GridView gridview;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.site_list);
add_rss = (Button) findViewById(R.id.add_rss);
gridview = (GridView) findViewById(R.id.gridview);
rssFeedList = new ArrayList<HashMap<String, String>>();
new loadStoreSites().execute();
gridview.setOnItemClickListener(new OnItemClickListener() {
...
...
);
add_rss.setOnClickListener(new View.OnClickListener() {
...
...
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
// if result code 100
if (resultCode == 100) {
// reload this screen again
Intent intent = getIntent();
finish();
startActivity(intent);
}
}
class loadStoreSites extends AsyncTask<String, String, String> {
@Override
protected void onPreExecute() {
super.onPreExecute();
...
...
}
@Override
protected String doInBackground(String... args) {
// updating UI from Background Thread
runOnUiThread(new Runnable() {
public void run() {
RSSDatabaseHandler rssDb = new RSSDatabaseHandler(getApplicationContext());
// listing all websites from SQLite
List<WebSite> siteList = rssDb.getAllSites();
sqliteIds = new String[siteList.size()];
// loop through each website
for (int i = 0; i < siteList.size(); i++) {
WebSite s = siteList.get(i);
// creating new HashMap
HashMap<String, String> map = new HashMap<String, String>();
// adding each child node to HashMap key => value
map.put(TAG_ID, s.getId().toString());
map.put(TAG_TITLE, s.getTitle());
map.put(TAG_LINK, s.getLink());
// adding HashList to ArrayList
rssFeedList.add(map);
// add sqlite id to array
// used when deleting a website from sqlite
sqliteIds[i] = s.getId().toString();
}
gridview.setAdapter(new SimpleAdapter(RSSReaderActivity.this,rssFeedList, R.layout.site_list_row,new String[] { TAG_ID, TAG_TITLE, TAG_LINK },new int[] { R.id.sqlite_id, R.id.title, R.id.link }));
registerForContextMenu(gridview);
}
});
return null;
}
protected void onPostExecute(String args) {
// dismiss the dialog after getting all products
pDialog.dismiss();
}
}
}
SO how do we use onsavedinstance() over here.. please can anyone guide me.
해결책
add this in menifest file
android:configChanges="keyboardHidden|orientation|screenSize"