do while cycle Java basic example
do while Java example
public class MainClass {
public static void main(String[] arg) {
String[] arrayOfString = { "Hello", "people", "hello", "world!" };
int i = 0;
// first cycle is always executed
do {
System.out.println("Loop: " + i);
System.out.println(arrayOfString[i]);
i++;
}while ( i == -1 );
}
}
/*
Loop: 0
Hello
*/
public class MainClass {
public static void main(String[] arg) {
String[] arrayOfString = { "Hello", "people", "hello", "world!" };
int i = 0;
do {
System.out.println("Loop: " + i);
System.out.println(arrayOfString[i]);
i++;
}while ( i < arrayOfString.length );
}
}
/*
Loop: 0
Hello
Loop: 1
people
Loop: 2
hello
Loop: 3
world!
*/
397LW NO topic_id
Další témata ....(Topics)
Toast in Android application is equivalent of Alert in JavaScript or MessageBox in WinApi.
// Toast android.widget.Toast.makeText(Context context, CharSequence text, int duration)
// public static Toast makeText (Context context, CharSequence text, int duration)
Toast.makeText(getApplicationContext(), "Hello world!",
Toast.LENGTH_SHORT).show();
How setup color coloring highlight highlighting syntax font size and family in Eclipse Java and XML editor Android example
Java editor
xml editor
xml editor double click in Preferences dialog on xml -> Editor -> Syntax coloring
[caption id="attachment_627" align="alignleft" width="297" caption="Eclipse editor syntax color settings"]
[/caption]
Java editor
- Go to Eclipse menu Window -> Preferences
- Doubleclick on Java
- Double click on Editor
- Select Java, Javadocs or Comments and setup color and font
- Font size and family change from Window->Preferences-> General->Appearance->Colors and Fonts
- Press OK for saving changes
xml editor
xml editor double click in Preferences dialog on xml -> Editor -> Syntax coloring
[caption id="attachment_627" align="alignleft" width="297" caption="Eclipse editor syntax color settings"]
[/caption]
Calendar cal = new GregorianCalendar(), int year = cal.get(Calendar.YEAR),
ERA, MONTH, DAY_OF_MONTH, DAY_OF_WEEK, Android example code.
ERA, MONTH, DAY_OF_MONTH, DAY_OF_WEEK, Android example code.
public class MainActivity extends Activity {
TextView txtV;
Context cntx;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
txtV = (TextView)findViewById(R.id.idLabel);
cntx = this;
Calendar cal = new GregorianCalendar();
int era = cal.get(Calendar.ERA); // 0 B.C. before Christ, 1 Anno Domini
txtV.setText(txtV.getText() +"
" + era);
int year = cal.get(Calendar.YEAR); // 2011
txtV.setText(txtV.getText() +"
" + year);
int month = cal.get(Calendar.MONTH); // 0 is Januar
txtV.setText(txtV.getText() +"
" + month);
int day = cal.get(Calendar.DAY_OF_MONTH); // 1 to 31
txtV.setText(txtV.getText() +"
" + day);
int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK); // 1=Sunday, 2=Monday ...
txtV.setText(txtV.getText() +"
" + dayOfWeek);
}
}
////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();
}
}
You have to put your font fonts/samplefont.ttf into assets/fonts folder in your project!
// set own custom font from assets
TextView txt = (TextView) findViewById(R.id.custom_font);
Typeface mFace = Typeface.createFromAsset(getContext().getAssets(),
"fonts/samplefont.ttf");
txt.setTypeface(mFace);
Editace Jana Žákovská : 2011-10-04 08:57:45
Počet článků v kategorii: 397
Url:do-while-cycle-java-basic-example
