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List LinkedList add sort find Item in Java example


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List LinkedList Collections add sort find search Item, get searched item to string in Java example.

MainClass.java

import java.util.Collections;
import java.util.LinkedList;
import java.util.List;

public class MainClass {
	public static void main(String[] arg) {
		String[] arrayOfString = {"nothing", "Hello", "people"
				, "bye-bye", "hello", "world!", "End" };
		   
                   List<String> arrayList = new LinkedList<String>();
                  
                   for(String s: arrayOfString)
		     arrayList.add(s);

		    Collections.sort(arrayList);
		    // foreach
		    for (String str: arrayList)
		      System.out.println(str);
		    
		    Object objMin = Collections.min(arrayList);
		    System.out.println("Min is: " + objMin);
		    
		    Object objMax = Collections.max(arrayList);
		    System.out.println("Max is: " + objMax);
		    
		    int index = Collections.binarySearch(arrayList, "people");
		    System.out.println("Index of people is: " + index);
		    // print word on index 5
		    System.out.println("Index 5 is: " + arrayList.get(5));
                    String sItem = arrayList.get(5); // get item from index 5 to string
		    
		  }
}
/*
End
Hello
bye-bye
hello
nothing
people
world!
Min is: End
Max is: world!
Index of people is: 5
Index 5 is: people
*/

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120

Statistics usability of mobile phones with Android – October 2011 | statistics-usability-of-mobile-phones-with-android-%e2%80%93-october-2011


Table of usability phones with Android: (Our software)












October 2011 September 2011












Samsung Galaxy S2 10,90%
Samsung Galaxy S 8,10%
Samsung Galaxy Tab 7,00%
Samsung Galaxy Mini 6,20%
HTC Desire HD 4,10%
Samsung Galaxy Ace 4,10%
Samsung Galaxy S 4,00%
Samsung Galaxy Fit 3,30%
HTC Wildfire 3,20%
SEMC Xperia X10 2,20%

























Samsung Galaxy S213.8%
Samsung Galaxy S8.5%
Samsung Galaxy Tab7.4%
Samsung Galaxy Mini5.4%
Samsung Galaxy S4.0%
HTC Desire HD3.8%
Samsung Galaxy Ace3.8%
HTC Wildfire3.2%
Samsung Galaxy Fit3.1%
SEMC Xperia X102.1%



Graph of usability Smartphone with Android - October 2011:
phones-usability-wiht-android-october-2011


Samsung Galaxy S2 vs iPhone4 - video


Samsung Galaxy S2 vs iPhone4 - browsing, gaming, apps, performance, browser, fast, against, navigation, Sygic, apk, Android, iOS



29

ListView add item click item basic Android example code | listview-add-item-click-item-basic-android-example-code


Definition of ListView in layout main.xml file Android example



<ListView android:id="@+id/idListView"
        android:background="#7700CC00"
        android:layout_height="wrap_content"
        android:layout_width="fill_parent" /> 



Code in Main.java ListView example source code Java Android

public class Main extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        ListView mlistView = (ListView) findViewById(R.id.idListView);
        mlistView.setAdapter(new ArrayAdapter<String>(this,
                android.R.layout.simple_list_item_1, 
                new String[] {"Game", "Help", "Home site"}));
    
        mlistView.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {
              // When clicked, show a toast with the TextView text Game, Help, Home
              Toast.makeText(getApplicationContext(), ((TextView) view).getText(),
                  Toast.LENGTH_SHORT).show();
            }
          });
     }
}


129

Bitmap set contrast and brightness Android example | bitmap-set-contrast-and-brightness-android



////www.apache.org/licenses/LICENSE-2.0
        private Paint mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
        private ColorMatrix mCM = new ColorMatrix();
        private Bitmap mBitmap;
        private float mSaturation;
        private float mAngle;
//..........
mBitmap = BitmapFactory.decodeResource(context.getResources(),
                                                   R.drawable.my_image);
//..........
        private static void setContrastScaleOnly(ColorMatrix cm, float contrast) {
            float scale = contrast + 1.f;
               float translate = (-.5f * scale + .5f) * 255.f;
            cm.set(new float[] {
                   scale, 0, 0, 0, 0,
                   0, scale, 0, 0, 0,
                   0, 0, scale, 0, 0,
                   0, 0, 0, 1, 0 });
        }
       private static void setContrast(ColorMatrix cm, float contrast) {
            float scale = contrast + 1.f;
               float translate = (-.5f * scale + .5f) * 255.f;
            cm.set(new float[] {
                   scale, 0, 0, 0, translate,
                   0, scale, 0, 0, translate,
                   0, 0, scale, 0, translate,
                   0, 0, 0, 1, 0 });
        }
        
        private static void setContrastTranslateOnly(ColorMatrix cm, float contrast) {
            float scale = contrast + 1.f;
               float translate = (-.5f * scale + .5f) * 255.f;
            cm.set(new float[] {
                   1, 0, 0, 0, translate,
                   0, 1, 0, 0, translate,
                   0, 0, 1, 0, translate,
                   0, 0, 0, 1, 0 });
        }

       @Override protected void onDraw(Canvas canvas) {
            Paint paint = mPaint;
            float x = 20;
            float y = 20;
            
            canvas.drawColor(Color.WHITE);
            
            paint.setColorFilter(null);
            canvas.drawBitmap(mBitmap, x, y, paint);
            
            ColorMatrix cm = new ColorMatrix();
            
            mAngle += 2;
            if (mAngle > 180) {
                mAngle = 0;
            }
            
            //convert our animated angle [-180...180] to a contrast value of [-1..1]
            float contrast = mAngle / 180.f;
            
            setContrast(cm, contrast);
            paint.setColorFilter(new ColorMatrixColorFilter(cm));
            canvas.drawBitmap(mBitmap, x + mBitmap.getWidth() + 10, y, paint);
            
            setContrastScaleOnly(cm, contrast);
            paint.setColorFilter(new ColorMatrixColorFilter(cm));
            canvas.drawBitmap(mBitmap, x, y + mBitmap.getHeight() + 10, paint);
            
            setContrastTranslateOnly(cm, contrast);
            paint.setColorFilter(new ColorMatrixColorFilter(cm));
            canvas.drawBitmap(mBitmap, x, y + 2*(mBitmap.getHeight() + 10),
                              paint);
            
            invalidate();
        }
    }

86

Map TreeMap key value pair add put get pair by key Java Android example | map-treemap-key-value-pair-add-put-get-pair-by-key-java-android-example


Map TreeMap add key value pair get find pair by key Java Android example.

MainClass.java

import java.util.Map;
import java.util.TreeMap;

public class MainClass {
	public static void main(String[] arg) {
		
		// english;germany dictionary
		String[] arrayOfString = { "one;eine", "two;zwei", "three;drei" };

		Map<String, String> map = new TreeMap<String, String>();
	    
		for(String s: arrayOfString){
	    	String[] array = s.split(";");
	    	String sKey ="", sValue="";
	    	if(array.length > 1){
	    	sKey = array[0]; sValue = array[1];
	    		map.put(sKey, sValue);
	    	}
	    }

       // check if key exists 	    
	   if( map.containsKey("two")){
		System.out.print("two = " + map.get("two"));
	   }
	}
}
/*
two = zwei
 */

136

Draw Path drawPath draw the trajectory of shot Android basic example | draw-path-drawpath-android-basic-example


Draw the trajectory of shot.

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);

		}
	       private static void makePath(Path p) {
	            p.moveTo(10, 0);
	            p.cubicTo(100, -50, 200, 150, 300, 0);
	        }
		@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(5);
			// opacity
			//p.setAlpha(0x80);
 
			p.setColor(Color.BLACK);
			Path mPath = new Path();
            makePath(mPath);
			canvas.drawPath(mPath, p); //(rectF, 90, 45, true, p);
		}

	}
}


Editace: 2013-12-09 10:56:55
Počet článků v kategorii: 397
Url:list-linkedlist-add-sort-find-item-in-java-example

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