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Foreach loop cycle in Java Android example


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Foreach in Java basic example source code.

MainClass.java


public class MainClass {
	public static void main(String[] arg) {
		String[] arrayOfString = { "Hello", "people", "hello", "world!" };

		for (String s : arrayOfString)
			System.out.println(s);

	}
}


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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	
59

Relative layout RelativeLayout Android example | relative-layout-relativelayout-android-example


xml RelativeLayout Android example:

Eclipse graphical xml layout editor
[caption id="attachment_896" align="alignleft" width="261" caption="Relativelayout Eclipse graphical editor"]relativelayout-graphical-editor-eclipse[/caption]


res/layout/main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="//schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TextView
        android:id="@+id/idLabel"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="Enter word"/>
    <EditText
        android:id="@+id/idEntry"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@android:drawable/editbox_background"
        android:layout_below="@id/idLabel"/>
    <Button
        android:id="@+id/idOk"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@id/idEntry"
        android:layout_alignParentRight="true"
        android:layout_marginLeft="10dip"
        android:text="OK" />
    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toLeftOf="@id/idOk"
        android:layout_alignTop="@id/idOk"
        android:text="Cancel" />
</RelativeLayout>
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);
		}

	}
}
27

Get Context Java Android example | get-context-java-android-example


getContext() getApplicationContext() method Java Android example source






Context myContext_1 = ThisClassName.this; // to open a Dialog
Context myContext_2 = getContext();
Context myContext_3 = this.getContext();
Context myContext_4 = this;
Context myContext_5 = this.getApplicationContext ();


OnClickListener getImageBtnOnClick = new OnClickListener() {
public void onClick(View view) {
Context context = view.getContext();

}
};
// Toast
Toast.makeText(getApplicationContext(), "Context == getApplicationContext "
, Toast.LENGTH_SHORT).show();



// store Context in public class
public class MyActivity extends Activity {
public static Context myCnt = null;
...
protected void onCreate(Bundle icicle) {
...
myCnt = this;
MyStorage.setContext(myCnt);
// or
// MyStorage.setContext(this);

// cntxFromStorage == this
Context cntxFromStorage = MyStorage.getContext();
...
};
};

public class MyStorage
{
private static Context cntStorageContext = null;


public static Context getContext() {
return cntStorageContext;
}

public static void setContext(Context context) {
MyStorage.cntStorageContext = context;
}


};

class DataBaseHelper extends SQLiteOpenHelper {
// get MyActivity context
Context cnt = MyStorage.getContext();

}



138

Draw text drawText Android basic example | draw-text-drawtext-android-basic-example


drawText(), setColor(), setTextSize(), setTextAlign()

public class ApokusActivity 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();
			
            paint.setColor(Color.YELLOW);
            paint.setTextSize(60);
            //paint.setTextAlign(Paint.Align.CENTER);

            canvas.drawText("Hello world!", 0, 50, paint);
		}

	}
}



Editace: 2011-10-04 08:56:58
Počet článků v kategorii: 397
Url:foreach-loop-cycle-in-java-android-example

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