Android widget SearchView in onCreateOptionsMenu is null
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;
}
396LW NO topic_id
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Další témata ....(Topics)
Download file from Android device using Android Studio
stackoverflow.com/questions/34603355/android-device-monitor-data-folder-is-empty- android.com/studio Start Android Studio
- Root device by Your Android model. This example is for 4.4 kingoapp.com/root-tutorials/how-to-root-android-4.4.htm
- Open command prompt console: Start -> Command prompt
- Write path to ADB plus command, and set chmod for every folder on path to apliccations database, for example: (user is Your name|nick!!!! shell@Kraft-A6000:/ is Your device, this is Lenovo A6000, may be different!!!!)
- Every dot is one line in Command prompt console!!!!! Dont write (press Enter) or (Enter). Dont brake line between root@Kraft-A6000:/ # and (Enter)!
C:\Users\user>c:\Users\user\AppData\Local\Android\sdk\platform-tools\adb shell (press Enter)
shell@Kraft-A6000:/ $
shell@Kraft-A6000:/ $ su (Enter)
root@Kraft-A6000:/ #
root@Kraft-A6000:/ # su -c "chmod 777 /data" (Enter)
root@Kraft-A6000:/ # su -c "chmod 777 /data/data" (Enter)
root@Kraft-A6000:/ # su -c "chmod 777 /data/data/com.your_package" (Enter)
root@Kraft-A6000:/ # su -c "chmod 777 /data/data/com.your_package/databases" (Enter)
root@Kraft-A6000:/ # su -c "chmod 777 /data/data/com.your_package/databases/database_name.db" (Enter)
- Open Android Studio -> Tools -> Android -> Android Device Monitor (meybe some message box, minimalize all windows to find message box - close message box )
- Pull data from Explorer
Date: 13.07.2020 - 08:23
drawRect(), Paint, setStroke(), setStyle(), Canvas example source code.
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(new SampleView(this));
}
private static class SampleView extends View {
// CONSTRUCTOR
public SampleView(Context context) {
super(context);
setFocusable(true);
}
@Override
protected void onDraw(Canvas canvas) {
canvas.drawColor(Color.CYAN);
Paint p = new Paint();
// smooths
p.setAntiAlias(true);
p.setColor(Color.RED);
p.setStyle(Paint.Style.STROKE);
p.setStrokeWidth(4.5f);
// opacity
//p.setAlpha(0x80); //
//drawRect (float left, float top, float right, float bottom, Paint paint)
canvas.drawRect(10, 10, 30, 30, p);
}
}
}
LayoutLib is too recent. Update your tool!
Eclipse Android Graphical layout resolving problem.
Eclipse Android Graphical layout resolving problem.
- Open in Eclipse menu Help ->Check for Updates
- Select updates:
- Press Next and update all
- Restart Eclipse
[caption id="attachment_596" align="alignleft" width="300" caption="Restart Eclipse if updates finished."]


/* Copyright (C) 2011 The Android Open Source Project
//www.apache.org/licenses/LICENSE-2.0
*/
public class MainActivity extends Activity {
private ImageView imageView;
private Button button1;
Drawable bitmapOrg;
private final int[] mColors =
{Color.BLUE, Color.GREEN, Color.RED, Color.LTGRAY, Color.MAGENTA, Color.CYAN,
Color.YELLOW, Color.WHITE};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
imageView = (ImageView)findViewById(R.id.imageView1);
button1 = (Button)findViewById(R.id.button1);
bitmapOrg = this.getResources().getDrawable(R.drawable.flower_blue);
button1.setOnClickListener(new OnClickListener() {
public void onClick(View view) {
int mColor = (int) Math.floor(Math.random() * mColors.length);
bitmapOrg.setColorFilter(mColors[mColor], PorterDuff.Mode.MULTIPLY);
imageView.setImageDrawable(bitmapOrg);
imageView.invalidate();
}
});
}
}
// in strings.xml
<string name="myStringWithTags"><![CDATA[<b>some text..</b> other tags ...]]></string>
<string name="myStringWithPattern"><![CDATA[<b>%s</b> other tags ...]]></string>
// in Activity.class
String sHtmlText = this.getApplicationContext().getString(R.string.myStringTags);
sHtmlText = this.getApplicationContext().getString(R.string.myStringWithPattern,"replace %s with this text");
Editace: 2015-11-25 09:49:36
Počet článků v kategorii: 396
Url:android-widget-searchview-in-oncreateoptionsmenu-is-null