키보드 보이기, 숨기기

보이기
EditText editText = (EditText) findViewById(R.id.myEdit);
InputMethodManager mgr = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
mgr.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT);

숨기기
InputMethodManager mgr = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
mgr.hideSoftInputFromWindow(editText.getWindowToken(), 0);

overscrolling in Android 2.3

AbsListView
setOverScrollMode(int mode)

View.OVER_SCROLL_ALWAYS
View.OVER_SCROLL_IF_CONTENT_SCROLLS
View.OVER_SCROLL_NEVER

=======================================

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http://jasonfry.co.uk/?id=27


public class BounceListView extends ListView{
  private static final int MAX_Y_OVERSCROLL_DISTANCE = 200;  
  private Context mContext;
private int mMaxYOverscrollDistance;

public BounceListView(Context context){
super(context);
mContext = context;
initBounceListView();
}

public BounceListView(Context context, AttributeSet attrs){
super(context, attrs);
mContext = context;
initBounceListView();
}

public BounceListView(Context context, AttributeSet attrs, int defStyle){
super(context, attrs, defStyle);
mContext = context;
initBounceListView();
}

private void initBounceListView(){
//get the density of the screen and do some maths with it on the max overscroll distance
//variable so that you get similar behaviors no matter what the screen size

final DisplayMetrics metrics = mContext.getResources().getDisplayMetrics();
    final float density = metrics.density;
      
mMaxYOverscrollDistance = (int) (density * MAX_Y_OVERSCROLL_DISTANCE);
}

@Override
protected boolean overScrollBy(int deltaX, int deltaY, int scrollX, int scrollY, int scrollRangeX, int scrollRangeY, int maxOverScrollX, int maxOverScrollY, boolean isTouchEvent){
//This is where the magic happens, we have replaced the incoming maxOverScrollY with our own custom variable mMaxYOverscrollDistance;
return super.overScrollBy(deltaX, deltaY, scrollX, scrollY, scrollRangeX, scrollRangeY, maxOverScrollX, mMaxYOverscrollDistance, isTouchEvent);
}
}

스크롤 버튼

setFastScrollEnabled(true) 로 설정하면 된다.

EditText Enter Key Event, Enter키(Done키) 보여주게 하기

setOnKeyListener 를 사용하면 Enter key 처리가 제대로 되지 않음.

edittext.setOnEditorActionListener(new OnEditorActionListener(){
  @Override
  public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
    if((actionId == EditorInfo.IME_ACTION_DONE)|| (event != null && event.getKeyCode() == KeyEvent.KEYCODE_ENTER)){
      .....
    }
    return false;
  }
});

============================

EditText Enter or Done Key 등 개발자가 원하는 대로 보여주고자 할 때
edittext.setImeOptions(EditorInfo.IME_ACTION_NEXT)

ListView 스크롤 시 쉐도우 영역 없애기

android:fadingEdge="none"

Bitmap 테두리 Rounding 처리

public class BitmapUtils {
  private static final int ROUND_DIPS = 10;

  public static Bitmap getRoundedCornerBitmap(Context context, Bitmap bitmap) {
      Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
      Canvas canvas = new Canvas(output);

      final int color = 0xff424242;
      final Paint paint = new Paint();
      final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
      final RectF rectF = new RectF(rect);
      final float roundPx = convertDipsToPixels(context, ROUND_DIPS);

      paint.setAntiAlias(true);
      canvas.drawARGB(0, 0, 0, 0);
      paint.setColor(color);
      canvas.drawRoundRect(rectF, roundPx, roundPx, paint);

      paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
      canvas.drawBitmap(bitmap, rect, rect, paint);

      return output;
  }

  public static int convertDipsToPixels(Context context, int dips) {
      final float scale = context.getResources().getDisplayMetrics().density;
      return (int) (dips * scale + 0.5f);
  }
}

Android ProGuard 관련 글 모음

http://bit.ly/epHwwa
http://bit.ly/9GgKvl
http://bit.ly/dOudqP


프로가드 설치 : http://bit.ly/eYLxKl

안드로이드 프로가드 적용 : http://serlya.tistory.com/82