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ClassCastException fragments.MainActivity must implement OnHeadlineSelectedListener


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Problem:
You have two class with similar names HeadLinesFragment and HeadMyLinesFragment with OnHeadlineSelectedListener.
Check if call correct class in MainActivity.
For example if use HeadMyLinesFragment change implement to HeadMyLinesFragment too!


public class MainActivity extends FragmentActivity 
        implements HeadLinesFragment.OnHeadlineSelectedListener { 
// wrong implements you need correct class name 
//implements  HeadMyLinesFragment.OnHeadlineSelectedListener
//............
HeadMyLinesFragment firstFragment = new HeadMyLinesFragment(); // because in code using HeadMyLinesFragment


397LW NO topic_id




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Další témata ....(Topics)


169

Iterate HashMap getKey getValue Java Example | iterate-hashmap-getkey-getvalue-java-example



 HashMap<String,Locale> _mapOfLocale = new HashMap<String,Locale>();
    _mapOfLocale.put("French",Locale.	FRENCH	);	
    _mapOfLocale.put("German",Locale.	GERMAN	);	
    _mapOfLocale.put("Italian",Locale.	ITALIAN	);	

    for (Entry<String, Locale> entry : _mapOfLocale.entrySet()) {

       System.out.println(entry.getKey());
       System.out.println(entry.getValue());

      }



276

Create Image From View Screen Android | create-image-from-view-screen-android



WebView_webview = (WebView)findViewById(R.id.webViewMapa);
_webview.getSettings().setBuiltInZoomControls(true);
_webview.setBackgroundColor(Color.parseColor("#E8EAE8"));
// _webview.loadUrl( ... some your page

Bitmap b = Bitmap.createBitmap(_webview.getWidth()/2, _webview.getHeight(), Bitmap.Config.ARGB_8888);
// you can to draw on bitmap
Canvas c = new Canvas(b);
Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
paint.setStrokeWidth(15.f);
paint.setColor(Color.RED);
paint.setStyle(Paint.Style.STROKE);
//paint.setShadowLayer(5.f, 0, 5.f, 0xFF000000);
_webview.draw(c); // put into canvas content of view like image
c.drawLine(70, 0, 150, 350, paint);// draw some line
//Rect oval = new Rect(0, 0, 100, 100);
//c.drawArc(oval, 0, 180, false, paint);

// you can show bitmap in other view
((ImageView)findViewById(R.id.imageView1)).setImageBitmap(b);

259

Shuffle Array of String Java Example | shuffle-array-of-string-java-example



       String[] sAr = new String[] {"one","two","three"};
       List<String> wordList = Arrays.asList(sAr);
       Collections.shuffle( wordList);
       String[]myShuffledArray = wordList.toArray(new String[wordList.size()]);


326

phpbb forum mobile friendly theme style | phpbb-forum-mobile-friendly-theme-style


- download any mobile styles for example //www.artodia.com/phpbb-styles/mobile/
- unzip style into your forum style folder for example all art_mobile folder copy into 0:/myweb/forum/styles/
- folow instalation istructions //www.artodia.com/phpbb-styles/mobile/tutorials/mobile-detection/
- check url result on https://www.google.com/webmasters/tools/mobile-friendly
39

How setup color coloring syntax code highlight highlighting in Eclipse editor Android example | how-setup-color-syntax-highlight-in-eclipse-android-example


How setup color coloring highlight highlighting syntax font size and family in Eclipse Java and XML editor Android example
Java editor

  1. Go to Eclipse menu Window -> Preferences

  2. Doubleclick on Java

  3. Double click on Editor

  4. Select Java, Javadocs or Comments and setup color and font

  5. Font size and family change from Window->Preferences-> General->Appearance->Colors and Fonts


  6. Press OK for saving changes


xml editor
xml editor double click in Preferences dialog on xml -> Editor -> Syntax coloring
[caption id="attachment_627" align="alignleft" width="297" caption="Eclipse editor syntax color settings"]eclipse-color-syntax-highlight-settings[/caption]


Editace: 2016-04-01 12:06:43
Počet článků v kategorii: 397
Url:classcastexception-fragments-mainactivity-must-implement-onheadlineselectedlistener

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