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Resource int R.string.app_name to String Android example


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R.string.app_name to String example.
MyActivity.java

Resources res = getResources();
String sText = res.getString(R.string.app_name);


res/values/string.xml


<resources>
    <string name="app_name">My app name</string>
</resources>


397LW NO topic_id




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241

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	
214

LinkedMap HashMap Java | linkedmap-hashmap-java



Map<Float,String> linkedHashMap = new LinkedHashMap<Float, String>();

 linkedHashMap.put(14.f, "text");
 linkedHashMap.put(13.f, "text");
 linkedHashMap.put(10.f, "text");
 linkedHashMap.put(11.f, "text");
 linkedHashMap.put(2.f, "text");
 linkedHashMap.put(3.f, "text");
 linkedHashMap.put(1.f, "text");
 linkedHashMap.put(7.f, "text");
 linkedHashMap.put(23.f, "text");

	for (Entry<Float,String> entry : linkedHashMap.entrySet()) {
		System.out.println(entry.getKey());
	}
14.0
13.0
10.0
11.0
2.0
3.0
1.0
7.0
23.0

Map<Float,String> hashMap = new HashMap<Float, String>();

 hashMap.put(14.f, "text");
 hashMap.put(13.f, "text");
 hashMap.put(10.f, "text");
 hashMap.put(11.f, "text");
 hashMap.put(2.f, "text");
 hashMap.put(3.f, "text");
 hashMap.put(1.f, "text");
 hashMap.put(7.f, "text");
 hashMap.put(23.f, "text");

 
 
	for (Entry<Float,String> entry : hashMap.entrySet()) {
		System.out.println(entry.getKey());
	}
// key :
1.0
14.0
3.0
13.0
2.0
7.0
11.0
23.0
10.0


359

Not visible layout changes on testing device | not-visible-layout-changes-on-testing-device


Delete - unistal app from testing device - emulator and try again RUN - DEBUGG your app.
114

Rename Android project package issue in Eclipse - R cannot be resolved to a variable | rename-android-project-package-issue-in-eclipse


Issue: After after renaming package this problem occurred "R cannot be resolved to a variable".

Solution: Try Clean your project Project » Clean » Clean projects selected below » select your project and click OK.

Try to delete the invalid code and type it again:

LinearLayout layout = (LinearLayout) findViewById(R.id.layout); // delete R.id.layout
LinearLayout layout = (LinearLayout) findViewById(); 
LinearLayout layout = (LinearLayout) findViewById(R.id.layout); // re-write this code R.id.layout
139

drawBitmap createBitmap by array of colours Android example | drawbitmap-createbitmap-draw-bitmap-by-array-of-colours-android-example


public static Bitmap createBitmap (int[] colors, int offset, int stride, int width, int height, Bitmap.Config config)
public void drawBitmap (Bitmap bitmap, float left, float top, Paint paint)

//  //www.apache.org/licenses/LICENSE-2.0
public class MainActivity extends Activity {
	    private static final int WIDTH = 50;
	    private static final int HEIGHT = 50;
	    private static final int STRIDE = 64;   // must be >= WIDTH
	    
	    private static int[] createColors() {
	        int[] colors = new int[STRIDE * HEIGHT];
	        for (int y = 0; y < HEIGHT; y++) {
	            for (int x = 0; x < WIDTH; x++) {
	                int r = x * 255 / (WIDTH - 1);
	                int g = y * 255 / (HEIGHT - 1);
	                int b = 255 - Math.min(r, g);
	                int a = Math.max(r, g);
	                colors[y * STRIDE + x] = (a << 24) | (r << 16) | (g << 8) | b;
	            }
	        }
	        return colors;
	    }
	
	@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.GREEN);

            int[] mColors = createColors();
            int[] colors = mColors;

           
            Bitmap bitmap = Bitmap.createBitmap(colors, 0, STRIDE, WIDTH, HEIGHT,
                    Bitmap.Config.RGB_565);
                      
			canvas.drawBitmap(bitmap, 50,20, paint); 
		}

	}
}




Editace: 2011-11-07 08:59:41
Počet článků v kategorii: 397
Url:resource-int-r-string-app_name-to-string-android-example

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