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Samsung Galaxy Pocket - Android



Nejmenší telefon od Samsungu s Androidem se někdy přidává i jako dárek k zakoupenému zboží, přesto tento telefon toho za svou cenu něco přes 2 000 korun umí hodně.
Technické parametry Samsung Galaxy Pocket
Rozměry a hmotnost: 103,70 × 57,50 × 12 mm, 97 g
Sítě GSM 850 / 900 / 1800 / 1900 MHz, W-CDMA (3G) 900 MHz / 2 100 MHz
Displej TFT TN, 2,80" (320 × 240 px), dotykový: kapacitní
Procesor 832 MHz
Paměť RAM 256 MB, vnitřní paměť 3 GB, paměťové karty microSD
Operační systém Android 2.3, údajně nelze upgradovat
Hudba: mp3, aac, wav, wma
Video: mp4, 3gp, 320 × 240 px, 15 FPS
Fotoaparát 2 Mpx
Navigace vestavěná GPS, elektronický kompas
Baterie 1 200 mAh, pohotovostní doba: 312 hodin
Cena něco přes 2 000 korun / léto 2012

samsung-galaxy-pocket

397LW NO topic_id



Další témata ....(Topics)


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
 */

102

Unable to resolve id for attribute id Graphical layout editor Eclipse error | unable-to-resolve-id-for-attribute-id-graphical-layout-editor-eclipse-error


Problem: erroneous entry of id

<RadioButton android:id="idRadio"
                android:text="My radio button"/>


Solution: @+id/

<RadioButton android:id="@+id/idRadio"
                android:text="My radio button"/>
8

Display screen size resolution density dimension Android | display-screen-dimension


Get display, screen resolution - dimension Android phone development example source code.

 Display display = getWindowManager().getDefaultDisplay();
int nWidth = display.getWidth();
int nHeight = display.getHeight();

          DisplayMetrics metrics = new DisplayMetrics();
            getWindowManager().getDefaultDisplay().getMetrics(metrics);
            //get density per inch for example: 120 , 160 , 240
            mXDpi = metrics.xdpi; // 160 The exact physical pixels per inch of the screen in the X dimension. 
            mYDpi = metrics.ydpi;

// density
int nDensity = metrics.densityDpi; // 160 screen density expressed as dots-per-inch

          float  mMetersToPixelsX = mXDpi / 0.0254f; // 1 inch == 0.0254 metre
          float  mMetersToPixelsY = mYDpi / 0.0254f;
          
// Resolution
// The total number of physical pixels on a screen.
int wPix = metrics.widthPixels; // 320 The absolute width of the display in pixels.
int hPix = metrics.heightPixels; // 480 The absolute height of the display in pixels.
int nWidthDisplay = (wPix < hPix)? wPix : hPix;

float nWidthScreenInInch = wPix / mXDpi; //320 / 160 == 2.0 in inch.
float nHeightScreenInInch = hPix / mYDpi; //480 / 160 == 3.0 in inch.

// for example:
// density 120 per inch
//width 320 pix / 120 dpi == width 2.66 inch
//height 480 pix / 120 dpi == height 4.0 inch 

// density 240 per inch
//width 320 pix / 240 dpi == width 1.33 inch
//height 480 pix / 240 dpi == height 2.0 inch 




Example:
HTC Desire HD
11 (4.3) Diagonal cm (in)
480×800 Resolution
85 (217) ppcm (PPI - Pixels per inch)

480 / 217 = 2.21 inch
800 / 217 = 3.69 inch
Math.sqrt( 2.21*2.21 + 3.69 * 3.69) = 4.3 inch - diagonal

//en.wikipedia.org/wiki/Pixels_per_inch
//en.wikipedia.org/wiki/Dots_per_inch

Typical screen widths:

320dp: a typical phone screen (240x320 ldpi, 320x480 mdpi, 480x800 hdpi, etc).
480dp: a tweener tablet like the Streak (480x800 mdpi).
600dp: a 7” tablet (600x1024 mdpi).
720dp: a 10” tablet (720x1280 mdpi, 800x1280 mdpi, etc).


Emulator skins in the Android SDK
//developer.android.com/guide/practices/screens_support.html









































Low density (120), ldpi

Medium density (160), mdpi

High density (240), hdpi

Extra high density (320), xhdpi

Small screen
QVGA (240x320) 480x640

Normal screen
WQVGA400 (240x400)

WQVGA432 (240x432)
HVGA (320x480) WVGA800 (480x800)

WVGA854 (480x854)

600x1024
640x960

Large screen
WVGA800** (480x800)

WVGA854** (480x854)
WVGA800* (480x800)

WVGA854* (480x854)

600x1024

Extra Large screen
1024x600 WXGA (1280x800)

1024x768
1280x768
1536x1152
1920x1152

1920x1200
2048x1536
2560x1536

2560x1600
* To emulate this configuration, specify a
custom density of 160 when creating an AVD that uses a WVGA800 or WVGA854 skin.

** To emulate this configuration, specify a custom density of 120 when creating an AVD that
uses a WVGA800 or WVGA854 skin.

† This skin is available with the Android 3.0 platform
81

Shuffle List ArrayList Collections Java example | shuffle-list-arraylist-collections-java-example


Add and shuffle elements in LinkedList or ArrayList Java basic example.


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.shuffle(arrayList);

		    System.out.println(arrayList);
		    
		  }
}
/*
[hello, world!, bye-bye, nothing, people, End, Hello]
*/


243

Dialog With RadioButton Android Example | dialog-with-radiobutton-android-example



private void dialogModeFC() {
	try {
	final AlertDialog alertDialog =	new AlertDialog.Builder(MainActivity.this)
    .setTitle(R.string.select_dialog)
    //.setItems(
    .setSingleChoiceItems(R.array.select_dialog_items, -1
    		, new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {

        /* User clicked so do some stuff 
        <item>Happy New Year</item>
        <item>Merry Christmas</item>
        <item>I Love You</item>
        */
            String[] items = getResources().getStringArray(R.array.select_dialog_items);
// list with boolean variables - which is true
//            for (int i = 0; i < _listMode.size(); i++) {
//            	_listMode.set(i, false);
//            }
//            _listMode.set(which, true);
            dialog.dismiss();
//            new AlertDialog.Builder(MainActivity.this)
//                    .setMessage("You selected: " + which + " , " + items[which])
//                    .show();
        }
    })
    .create();
	alertDialog.show();
	} catch (Exception e) {
		e.printStackTrace();
		Toast.makeText(getApplicationContext(), e.getMessage().toString(), Toast.LENGTH_LONG)
				.show();//("dialogModeFC", e.getMessage().toString());
	}
}// end dialogModeFC	


Editace Jana Žákovská : 2012-06-03 07:18:52
Počet článků v kategorii: 397
Url:samsung-galaxy-pocket-android
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