Android widget SearchView in onCreateOptionsMenu is null
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If your class extends AppCompatActivity
Check if linked appropriate library for:
Check if you have to properly sett SearchView in menu xml for onCreateOptionsMenu menu_main.xml
Check your SearchableActivity onCreateOptionsMenu
public class SearchableActivity extends AppCompatActivity
Check if linked appropriate library for:
import android.support.v4.view.MenuItemCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
Check if you have to properly sett SearchView in menu xml for onCreateOptionsMenu menu_main.xml
<menu xmlns:android="//schemas.android.com/apk/res/android" xmlns:app="//schemas.android.com/apk/res-auto"
xmlns:tools="//schemas.android.com/tools"
tools:context=".SearchableActivity">
<item
android:id="@+id/menu_search_my"
android:title="@string/menu_search"
android:icon="@drawable/ic_menu_search"
app:showAsAction="collapseActionView|ifRoom"
app:actionViewClass="android.support.v7.widget.SearchView"
/></menu>
Check your SearchableActivity onCreateOptionsMenu
@TargetApi(Build.VERSION_CODES.HONEYCOMB) @SuppressLint("NewApi") @Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
android.support.v7.widget.SearchView searchView = (android.support.v7.widget.SearchView)
MenuItemCompat.getActionView(menu.findItem(R.id.menu_search_my));
SearchManager searchManager = (SearchManager) getSystemService(Context.SEARCH_SERVICE);
if(null!=searchManager ) {
searchView.setSearchableInfo(searchManager.getSearchableInfo(getComponentName()));
}
searchView.setIconifiedByDefault(false);
}
return true;
}
397LW NO topic_id
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Google Android example source code - is text changed in EditText ?
EditText hEditText;
// TextChanged in onCreate
hEditText = (EditText)findViewById(R.id.idEditText);
hEditText.addTextChangedListener(new TextWatcher() {
public void afterTextChanged(Editable str) {
}
public void beforeTextChanged(CharSequence s, int start, int count,
int after) {
}
public void onTextChanged(CharSequence sq, int start, int before,
int count) {
}
});
Samsung Galaxy Ace nejlepší cena od 4 500 KCZ Kč (únor.2012)
Samsung Galaxy Ace je chytrý telefon s operačním systémem Android.
Samsung Galaxy Ace je (22.února2012) 4. nejpoužívanějším chytrým telefonem u programu Sky Map viz tabulka.
Galaxy Ace je 3.5G smartphone nabízí i quad-band GSM. Displej je 3,5 palcový TFT kapacitní dotykový LCD HVGA s (320x480) rozlišením. K dispozici je také 5 megapixelový fotoaparát s LED bleskem. Je schopny zaznamenat video v rozlišení QVGA (320x240) a VGA s (640x480) rozlišením. Ace je dodáván s 1350mAh Li-Ion baterií. Ace běží s OS Android 2.2 Froyo a lze jej upgradovat na Android 2.3.6 Gingerbread.
Samsung Galaxy Ace photo pic image
Zdroj obrázku: wikipedia
Samsung Galaxy Ace je chytrý telefon s operačním systémem Android.
Samsung Galaxy Ace je (22.února2012) 4. nejpoužívanějším chytrým telefonem u programu Sky Map viz tabulka.
Galaxy Ace je 3.5G smartphone nabízí i quad-band GSM. Displej je 3,5 palcový TFT kapacitní dotykový LCD HVGA s (320x480) rozlišením. K dispozici je také 5 megapixelový fotoaparát s LED bleskem. Je schopny zaznamenat video v rozlišení QVGA (320x240) a VGA s (640x480) rozlišením. Ace je dodáván s 1350mAh Li-Ion baterií. Ace běží s OS Android 2.2 Froyo a lze jej upgradovat na Android 2.3.6 Gingerbread.
Samsung Galaxy Ace photo pic image

Zdroj obrázku: wikipedia
Failed to rename directory ....
If using for update Android SDK manager,
try close Eclipse if is open.
Or change security settings of the folder which have problem.
Or disable antivirus for a moment.
If using for update Android SDK manager,
try close Eclipse if is open.
Or change security settings of the folder which have problem.
Or disable antivirus for a moment.
main.xml
<LinearLayout xmlns:android="//schemas.android.com/apk/res/android"
android:orientation="vertical"
android:gravity="top"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<HorizontalScrollView
android:id="@+id/horizontalScrollView1"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:gravity="top"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<ImageView
android:id="@+id/imageViewObrazekGeometrie"
android:layout_width="360dp"
android:layout_height="777dp"
android:src="@drawable/geometrie_vzorecky" />
</LinearLayout>
</HorizontalScrollView>
</ScrollView>
</LinearLayout>
onSaveInstanceState, onRestoreInstanceState life cycle if screen orientation changed from log file.
Diagram of life cycle onSaveInstanceState, onRestoreInstanceState
[caption id="attachment_1169" align="alignleft" width="229" caption="Life cycle onRestoreInstanceState"]
[/caption]
// starts activity
15:27:12.801: INFO/onCreate(1828): onCreate()
15:27:12.811: INFO/onStart(1828): onStart()
15:27:12.821: INFO/onResume(1828): onResume()
// activity is running
15:27:33.651: DEBUG/dalvikvm(307): GC_EXPLICIT freed 186K, 53%
free 2770K/5831K, external 981K/1038K, paused 99ms
// change emulator state Ctrl+F11 landscape, portrait
15:27:40.427: INFO/ActivityManager(74): Config changed:
{ scale=1.0 imsi=310/260 loc=en_US touch=3 keys=2/1/2 nav=3/1 orien=2 layout=18 uiMode=17 seq=64}
// saved all variable values if need
15:27:40.581: INFO/onSaveInstanceState(1828): onSaveInstanceState()
15:27:40.602: INFO/onPause(1828): onPause()
15:27:40.612: INFO/onStop(1828): onStop()
15:27:40.631: INFO/onDestroy(1828): onDestroy()
// activity goes back to onCreate !!!!!!!!!
15:27:40.692: INFO/onCreate(1828): onCreate()
15:27:40.701: INFO/onStart(1828): onStart()
// restore all saved values of variables
15:27:40.711: INFO/onRestoreInstanceState(1828): onRestoreInstanceState()
// you can using saved values by onSaveInstanceState() in onResume
15:27:40.721: INFO/onResume(1828): onResume()
Diagram of life cycle onSaveInstanceState, onRestoreInstanceState
[caption id="attachment_1169" align="alignleft" width="229" caption="Life cycle onRestoreInstanceState"]

Editace: 2015-11-25 09:49:36
Počet článků v kategorii: 397
Url:android-widget-searchview-in-oncreateoptionsmenu-is-null
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