Android Open Source - InstagramViewer Instagram Photo Adapter

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From Project

Back to project page InstagramViewer.

License

The source code is released under:

MIT License

Java Source Code

package com.codepath.instagramviewer;
/*from  w  ww .j av a 2s . c o m*/
import java.util.List;

import android.content.Context;
import android.graphics.Typeface;
import android.opengl.Visibility;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.TextView;

import com.squareup.picasso.Picasso;

public class InstagramPhotoAdapter extends ArrayAdapter<InstagramPhoto> {
  
  private static String PRIMARY_FONT = "Roboto-Regular.ttf"; // font string name
  private static String SECONDARY_FONT = "SourceSansPro-Regular.otf"; // font string name
  private static String SECONDARY_FONT_BOLD = "SourceSansPro-Semibold.otf"; // font string name
  private final Context context; // final Context variable to allow access to ViewHolder inner class
  
  // View lookup cache
    private static class ViewHolder {
      RoundedImageView ivUserProfilePic;
    TextView tvUsername;
    TextView tvTimeLapsed;
    TextView tvCaption;
    ImageView ivPhoto;
    TextView tvLikesCount;
    TextView tvLastComment;
    TextView tvLastCommentUsername;
    TextView tvSecondLastComment;
    TextView tvSecondLastCommentUsername;
    }
  
    public InstagramPhotoAdapter(Context context, List<InstagramPhoto> photos){
    super(context, R.layout.item_photos, photos);
    this.context=context;
  }
  
  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
    
    // get Item from getItem method of ArrayAdapter class
    final InstagramPhoto photo = getItem(position);
    
    // Check if an existing view is being reused, otherwise inflate the view
        ViewHolder viewHolder; // view lookup cache stored in tag
    
    if (convertView == null){
      viewHolder = new ViewHolder();
      convertView = LayoutInflater.from(getContext()).inflate(R.layout.item_photos, parent, false);
      viewHolder.ivUserProfilePic = (RoundedImageView) convertView.findViewById(R.id.ivUserProfilePic);
      viewHolder.tvUsername = (TextView) convertView.findViewById(R.id.tvUsername);
      viewHolder.tvTimeLapsed = (TextView) convertView.findViewById(R.id.tvTimeLapsed);
      viewHolder.tvCaption = (TextView) convertView.findViewById(R.id.tvCaption);
      viewHolder.ivPhoto = (ImageView) convertView.findViewById(R.id.ivPhoto);
      viewHolder.tvLikesCount = (TextView) convertView.findViewById(R.id.tvLikesCount);
      viewHolder.tvLastCommentUsername = (TextView) convertView.findViewById(R.id.tvLastCommentUsername);
      viewHolder.tvLastComment = (TextView) convertView.findViewById(R.id.tvLastComment);
      viewHolder.tvSecondLastCommentUsername = (TextView) convertView.findViewById(R.id.tvSecondLastCommentUsername);
      viewHolder.tvSecondLastComment = (TextView) convertView.findViewById(R.id.tvSecondLastComment);

      // set the fonts
      applySecondaryFont(viewHolder.tvUsername);
      applySecondaryFont(viewHolder.tvTimeLapsed);      
      applyPrimaryFont(viewHolder.tvCaption);
      applySecondaryFont(viewHolder.tvLikesCount);  
      applySecondaryFont(viewHolder.tvLastCommentUsername);
      applyPrimaryFont(viewHolder.tvLastComment);
      applySecondaryFont(viewHolder.tvSecondLastCommentUsername);
      applyPrimaryFont(viewHolder.tvSecondLastComment);
      
      convertView.setTag(viewHolder);      
    }
    else {
            viewHolder = (ViewHolder) convertView.getTag();
        }
    
    // setting the photo props to all the view elements
    viewHolder.tvUsername.setText(photo.getUsername());
    viewHolder.tvTimeLapsed.setText(photo.getRelativeTime());
    if (photo.getCaption() == null || photo.getCaption().equals("")){
      viewHolder.tvCaption.setVisibility(View.GONE);
    }
    else{
      viewHolder.tvCaption.setText(photo.getCaption());
    }
    viewHolder.tvLikesCount.setText(photo.getLikesCount() + " likes");
    viewHolder.ivPhoto.getLayoutParams().height = photo.getImageHeight();
    viewHolder.ivPhoto.setImageResource(0);
    
    
    // setting the last comments to the viewHolder elements if its not empty
    if (photo.getLastComment() != null && photo.getLastCommentUsername() != null){
      viewHolder.tvLastCommentUsername.setText(photo.getLastCommentUsername());
      viewHolder.tvLastComment.setText(photo.getLastComment());      
    }
    else{
      viewHolder.tvLastCommentUsername.setVisibility(View.GONE);
      viewHolder.tvLastComment.setVisibility(View.GONE);
    }
    
    if (photo.getSecondLastComment() != null && photo.getSecondLastCommentUsername() != null){
      viewHolder.tvSecondLastCommentUsername.setText(photo.getSecondLastCommentUsername());
      viewHolder.tvSecondLastComment.setText(photo.getSecondLastComment());      
    }
    else{
      viewHolder.tvSecondLastCommentUsername.setVisibility(View.GONE);
      viewHolder.tvSecondLastComment.setVisibility(View.GONE);
    }
    
    // used picasso lib to load the image from the specified url and set it to the imageView
    Picasso.with(getContext()).load(photo.getUserProfilePicUrl()).into(viewHolder.ivUserProfilePic);
    Picasso.with(getContext()).load(photo.getImageUrl()).into(viewHolder.ivPhoto);    
    
    return convertView;
  }
  
    // Method to set the font 
    public void applyPrimaryFont(TextView textView) {
        Typeface typeface = Typeface.createFromAsset(this.getContext().getAssets(), "fonts/"
                + SECONDARY_FONT);
        textView.setTypeface(typeface);
    }
  
    // Method to set the font 
    public void applySecondaryFont(TextView textView) {
      Typeface typeface = Typeface.createFromAsset(this.getContext().getAssets(), "fonts/"
          + SECONDARY_FONT_BOLD);
      textView.setTypeface(typeface);
    }
    
}

Java Source Code List

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