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android - OnClickListener must override a superclass method


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The method onClick(DialogInterface, int) of type new DialogInterface.OnClickListener(){} must override a superclass method.

Try this:
Right click on project
Select Properties
In open dialogue select Java compiler
Set Enable project specific settings
Set Compiler compliance level to 1.6

project-properties-eclipse

java-compiler-settings-eclipse



397LW NO topic_id




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26

Get package name Context-getPackageName Android example | get-package-name-context-getpackagename-android-example


If you often copy your Android project to another you have to using function for obtaining varied information about package.
This code show how get package name in Android application as string:

Context context = getContext(); // this.getContext(); getApplicationContext(); etc.
String sPackName = context.getPackageName();

158

Check Internet connection Android example | check-internet-connection-android-example



public boolean isConnected() {
	 try {
		ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
		 return cm.getActiveNetworkInfo().isConnectedOrConnecting();
	} catch (Exception e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
		Log.e("isConnected", e.getMessage());
		Toast.makeText(getApplicationContext(), e.getMessage(),
				Toast.LENGTH_LONG).show();
		return false;
	}


66

Locale location Java Android example | locale-location-java-android-example



Locale lc = Locale.getDefault(); // default now locale on device
	String sCountry = lc.getCountry(); // CZ
	
	lc = new Locale("fr","FR"); //FRANCE .. Locale(language, country);
	String sCountry2 = lc.getDisplayCountry(); // Francie

	 Locale locale = Locale.GERMAN;					    
	 String sCountry3 = locale.getDisplayCountry(); // ""

 Locale locale = Locale.GERMAN;
 DateFormat formatter = new SimpleDateFormat("HH:mm:ss zzzz", locale);
 String s = formatter.format(new Date());//13:40:39 GMT+00:00					


// array of locales   
 Locale[] locales = { new Locale("fr", "FR"), new Locale("de", "DE"),
				        new Locale("en", "US") };


Locale locale = Locale.US;

// for date
DateFormat dateFormatterEurope = DateFormat.getDateInstance(DateFormat.DEFAULT,
					Locale.GERMANY);
Calendar myCalendar = Calendar.getInstance();
String sDate = dateFormatterEurope.format(myCalendar.getTime());

        final byte[] langBytes = locale.getLanguage().getBytes(Charsets.US_ASCII);
        
// UTF-8 most widely used text format for to properly display of text
        final Charset utfEncoding = Charsets.UTF_8;
        String text = "ěščřžýáíéůú"; 
        final byte[] textBytes = text.getBytes(utfEncoding);


// other Locale
CANADA
CANADA_FRENCH
CHINA
CHINESE
ENGLISH
FRANCE
FRENCH
GERMAN
GERMANY
ITALIAN
ITALY
JAPAN
JAPANESE
KOREA
KOREAN
PRC // Locale constant for zh_CN. 
ROOT // Locale constant for the root locale. 
SIMPLIFIED_CHINESE
TAIWAN
TRADITIONAL_CHINESE Locale constant for zh_TW. 
UK
US
150

drawBitmap, clipPath, UNION, DIFFERENCE, INTERSECT, REPLACE, XOR Android example | drawbitmap-clippath-union-difference-intersect-replace-xor-android-example



public class MainActivity extends Activity {

	@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) {
			Paint paint = new Paint();

			canvas.drawColor(Color.YELLOW);

			 Bitmap b = Bitmap.createBitmap(200, 200,
			 Bitmap.Config.ARGB_8888);

			// you need to insert a image flower_blue into res/drawable folder

			paint.setFilterBitmap(true);
			Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(),
					R.drawable.flower_blue);
			canvas.drawBitmap(bitmapOrg, 10, 10, paint);
			int width, height;

		    Canvas c = new Canvas(b);
		    paint.setAlpha(255); //0x80
		    c.translate(0, 30);
		    c.drawBitmap(bitmapOrg, new Matrix(), paint);
		    paint.setColor(Color.BLUE);
        Path mPath = new Path();
		    mPath.addCircle(50, 50, 50, Path.Direction.CCW);
            //c.clipPath(mPath, Region.Op.UNION);
            //c.clipPath(mPath, Region.Op.DIFFERENCE);
            c.clipPath(mPath, Region.Op.INTERSECT);
            //c.clipPath(mPath, Region.Op.REPLACE);
            //c.clipPath(mPath, Region.Op.XOR);
           paint.setColor(Color.GREEN);
           paint.setAntiAlias(true);
           c.drawCircle(30, 20, 30, paint);

		    int h = bitmapOrg.getHeight();
			//canvas.drawBitmap(bitmapOrg, 10, 10, paint);
			canvas.drawBitmap(b, 0, 10 + h + 10, paint);

		}

	}
}



bitmap xor android


regions
2

Click Handler | click-handler-android-code


Click Handler Android Java example source code. Open new class as activity and open URL in browser.
In layout.xml file:



In string.xml

myClickHandler



In MainClass.java file

	public void myClickHandler(View view) {
		switch (view.getId()) {
		// open new class as activity
		case R.id.btnOpenClass: {
				Intent pictureActivity = new Intent(getBaseContext(),
						MyClass.class);
				startActivity(pictureActivity);
		}
		break;			
			
		case R.id.btnAbout: {
			//aboutDialogCreate();
		}
			break;
			
		// open url	
		 case R.id.btnHome: {
		 String url = "//android.okhelp.cz/";
		 Intent i = new Intent(Intent.ACTION_VIEW);
		 i.setData(Uri.parse(url));
		 startActivity(i);
		 }break;

		}

	}// end myClickHandler

// listener .. if click on button will scrolling to mTextView bottom
private OnClickListener mButtonListener = new OnClickListener() {
	    public void onClick(View v) {
	      // do something when the button is clicked
	    int nBottom =	mTextView.getBottom();
	    hScrollView.scrollTo(0, nBottom);
	    }
	};



Editace: 2013-12-09 10:14:50
Počet článků v kategorii: 397
Url:android-onclicklistener-must-override-a-superclass-method

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