gouravd

/****
 *** use this class NonSwipeableViewPager instead of the standard ViewPager
 ****/

package com.groupshoppy.helpers;

import android.content.Context;
import android.support.v4.view.ViewPager;
import android.util.AttributeSet;
import android.view.MotionEvent;

gouravd

com.squareup.picasso.Transformation transformation = new com.squareup.picasso.Transformation() {
            @Override
            public Bitmap transform(Bitmap source) {
                int targetWidth = yourview.getWidth();

                double aspectRatio = (double) source.getHeight() / (double) source.getWidth();
                int targetHeight = (int) (targetWidth * aspectRatio);
                Bitmap result = Bitmap.createScaledBitmap(source, targetWidth, targetHeight, false);
                if (result != source) {
                    // Same bitmap is returned if sizes are the same

gouravd

yourview.getViewTreeObserver()
                .addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
                    // Wait until layout to call Picasso
                    @Override
                    public void onGlobalLayout() {
                        // Ensure we call this only once
                        yourview.getViewTreeObserver()
                                .removeOnGlobalLayoutListener(this);

gouravd

public static class ScaleToFitWidthHeightTransform implements com.squareup.picasso.Transformation {

        private int mSize; // This has to be the maxHeight of the ImageView
        private boolean isHeightScale;

        public ScaleToFitWidthHeightTransform(int size, boolean isHeightScale){
            mSize =size;
            this.isHeightScale = isHeightScale;
        }

gouravd

public class SquareImageView extends ImageView
{
    public SquareImageView(Context context)
    {
        super(context);
    }

    public SquareImageView(Context context, AttributeSet attrs)
    {
        super(context, attrs);

gouravd

public class SquareImageView extends ImageView
{
    public SquareImageView(Context context)
    {
        super(context);
    }

    public SquareImageView(Context context, AttributeSet attrs)
    {
        super(context, attrs);

gouravd

package com.groupshoppy.helpers;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

import retrofit.client.Response;
import retrofit.mime.MimeUtil;
import retrofit.mime.TypedByteArray;
import retrofit.mime.TypedInput;

gouravd

Google's authentication-less on-the-fly image resizing service

I found it while poking around the Google+ HTML. Jotting down some notes felt like a good idea, so here goes. If you know more about this API, let me know, please!

(Word of warning: I spent ~30 minutes on both my experimentation and this here write-up, so it might not be the most thought-provoking, brilliant thing you read today.)

gouravd

// Uses retrofit to generate an implementation
public interface ICloud {
    static String serviceProviderHeader = "X-Auth-Service-Provider";
    static String credentialsAuthorizationHeader = "X-Verify-Credentials-Authorization";

    @GET("/verify_credentials?provider=digits")
    void verifyCredentials(
            @Header(serviceProviderHeader) String serviceProvider,
            @Header(credentialsAuthorizationHeader) String authorization,
            @Query("id") long id,

gouravd

popularFeed.setOnScrollListener(new RecyclerView.OnScrollListener() {
            @Override
            public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
                View toolbarholder = (getActivity().findViewById(R.id.hometoolbarholder));
                View toolbar = (getActivity().findViewById(R.id.toolbar));
                float y = recyclerView.getY();
                super.onScrolled(recyclerView, dx, dy);
                if (y < dy) {
                    toolbarholder.animate()
                            .translationY(-toolbar.getBottom())