nalitzis’s gists

nalitzis / subsample.java

Created June 7, 2014 20:46

Subsampling

	private void subSampleImage(int powerOf2) {
	if(powerOf2 < 1 \|\| powerOf2 > 8) {
	Log.e(TAG, "trying to apply upscale or excessive downscale: "+powerOf2);
	return;
	}
	final Resources res = getActivity().getResources();
	final BitmapFactory.Options options = new BitmapFactory.Options();
	options.inJustDecodeBounds = false;
	options.inSampleSize = powerOf2;
	final Bitmap bmp = BitmapFactory.decodeResource(res, R.drawable.brasil, options);

nalitzis / bitmapinfo.java

Created June 7, 2014 20:39

Bitmap info

	private void readBitmapInfo() {
	final Resources res = getActivity().getResources();
	final BitmapFactory.Options options = new BitmapFactory.Options();
	options.inJustDecodeBounds = true;
	BitmapFactory.decodeResource(res, R.drawable.brasil, options);
	final float imageHeight = options.outHeight;
	final float imageWidth = options.outWidth;
	final String imageMimeType = options.outMimeType;
	Log.d(TAG, "w,h, type:"+imageWidth+", "+imageHeight+", "+imageMimeType);
	Log.d(TAG, "estimated memory required in MB: "+imageWidth * imageHeight * BYTES_PER_PX/MemUtils.BYTES_IN_MB);

nalitzis / availableram.java

Last active January 13, 2016 07:32

Available RAM

	public static final float BYTES_IN_MB = 1024.0f * 1024.0f;

	public static float megabytesFree() {
	final Runtime rt = Runtime.getRuntime();
	final float bytesUsed = rt.totalMemory();
	final float mbUsed = bytesUsed/BYTES_IN_MB;
	final float mbFree = megabytesAvailable() - mbUsed;
	return mbFree;
	}

nalitzis / TestSample3.java

Last active December 20, 2015 07:19

	public class TestSample extends AndroidTestCase{
	private int mFinalValue;
	private static final int EXPECTED_VALUE = 10;

	private final HandlerThread mHandlerThread;

	private SampleClass mInstance;

	public void testDoAsync(){
	mInstance = new SampleClass();

nalitzis / TestSample2.java

Last active December 20, 2015 07:18

	public class TestSample extends AndroidTestCase{
	private int mFinalValue;
	private static final int EXPECTED_VALUE = 10;

	public void testDoAsync(){
	SampleClass s = new SampleClass();
	Listener l = new ListenerImpl();
	Semaphore semaphore = new Semaphore(0);
	s.doAsync();
	semaphore.acquire();

nalitzis / TestSample.java

Last active December 20, 2015 07:18

	public class TestSample extends AndroidTestCase{

	public void testDoAsync(){
	SampleClass s = new SampleClass();
	Listener l = new ListenerImpl();
	s.doAsync();
	}

	private class ListenerImpl implements Listener{
	public void onValueChanged(int i){

nalitzis / Sample.java

Last active December 20, 2015 07:09

	public interface SampleClass {
	void doAsync(Listener l);

	public interface Listener{
	void onValueChanged(int i);
	}
	}

nalitzis / resize.java

Last active December 19, 2015 16:59

resize dynamically a big view and observe it through view tree observer

	@Override
	protected void onCreate(Bundle savedInstanceState) {
	//... init code ...

	ViewTreeObserver vto = mRootView.getViewTreeObserver();
	vto.addOnGlobalLayoutListener(new OnGlobalLayoutListenerImpl());
	}

	private void resizeBigView(){

nalitzis / MeasureButton.java

Created July 12, 2013 20:27

get view size through View.MeasureSpec

	private Pair<Integer,Integer> measureButton(){
	int widthMeasureSpec = View.MeasureSpec.makeMeasureSpec(ViewGroup.LayoutParams.WRAP_CONTENT, View.MeasureSpec.EXACTLY);
	int heightMeasureSpec = View.MeasureSpec.makeMeasureSpec(ViewGroup.LayoutParams.WRAP_CONTENT, View.MeasureSpec.EXACTLY);
	mButton.measure(widthMeasureSpec, heightMeasureSpec);
	int h = mButton.getMeasuredHeight();
	int w = mButton.getMeasuredWidth();
	Log.d(TAG, "height of button is :"+h+", width is :"+w);
	return new Pair<Integer, Integer>(w,h);
	}

nalitzis / wait2.java

Created April 5, 2013 20:20

Adolfo Bulfoni nalitzis