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Change Screen Orientation Programmatically Android


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Landscape - portrait orientation change:

boolean mbOrientationLandscape = true;
if(mbOrientationLandscape ){
	setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
	mbOrientationLandscape =false;
}else{
	setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
	mbOrientationLandscape =true;
}


397LW NO topic_id




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Další témata ....(Topics)


135

Draw Arc Android basic example | draw-arc-android-basic-example


drawArc(), Canvas, Paint, setStyle()

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) {

			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); //
 
			RectF rectF = new RectF(50, 20, 100, 80);
			canvas.drawOval(rectF, p);
			p.setColor(Color.BLACK);
			canvas.drawArc (rectF, 90, 45, true, p);
		}

	}
}

69

Timer task TimerTask run cancel Android example | timer-task-timertask-run-cancel-android-example


Update TextView from TimerTask, Handler, schedule, run, cancel TimerTask, Android example

public class TimerActivity extends Activity {
	TimerTask mTimerTask;
	final Handler handler = new Handler();
	Timer t = new Timer();	
TextView hTextView;
TableRow hTableRow;
Button hButton, hButtonStop;


private int nCounter = 0;
@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        hTextView = (TextView)findViewById(R.id.idTextView);
        hButton = (Button)findViewById(R.id.idButton);
        hButton.setOnClickListener(mButtonStartListener);
        hButtonStop = (Button)findViewById(R.id.idButtonStop);
        hButtonStop.setOnClickListener(mButtonStopListener);

         
        
    } // end onCreate

View.OnClickListener mButtonStartListener = new OnClickListener() {
	public void onClick(View v) {
		doTimerTask();
    }
};



	
	View.OnClickListener mButtonStopListener = new OnClickListener() {
    	public void onClick(View v) {
    		stopTask();
    		
    	}
    };
    
    
    public void doTimerTask(){

    	mTimerTask = new TimerTask() {
    	        public void run() {
    	                handler.post(new Runnable() {
    	                        public void run() {
    	                        	nCounter++;
                                        // update TextView
    	                        	hTextView.setText("Timer: " + nCounter);

    	                        	Log.d("TIMER", "TimerTask run");
    	                        }
    	               });
    	        }};

            // public void schedule (TimerTask task, long delay, long period) 
    	    t.schedule(mTimerTask, 500, 3000);  // 

    	 }

    	  public void stopTask(){

    	   if(mTimerTask!=null){
    	      hTextView.setText("Timer canceled: " + nCounter);

    	      Log.d("TIMER", "timer canceled");
    	      mTimerTask.cancel();
    	 }
    
    }    
}


287

AlertDialog setButton Deprecated | alertdialog-setbutton-deprecated


Solution:

public void alertMy(String sTitle, String sMessage){
	AlertDialog.Builder builder = new AlertDialog.Builder(Test.this); // activity
  builder.setTitle(sTitle)
  .setMessage(sMessage)
  .setCancelable(false)
  .setNegativeButton("Close",new DialogInterface.OnClickListener() {
      public void onClick(DialogInterface dialog, int id) {
          dialog.cancel();
      }
  });
  AlertDialog alert = builder.create();
  alert.show();

}

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);



Editace: 2013-07-21 11:21:34
Počet článků v kategorii: 397
Url:change-screen-orientation-programmatically-android

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