Android Open Source - droidling Image Adapter

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License

The source code is released under:

Copyright (c) 2012 Keith Trnka Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Softwa...

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Java Source Code

package com.github.ktrnka.droidling;
// w w  w.j av a 2 s.c  o m
import android.content.Context;
import android.content.res.Resources;
import android.net.Uri;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ImageView.ScaleType;

import com.github.ktrnka.droidling.helpers.AsyncDrawable;
import com.github.ktrnka.droidling.helpers.BitmapLoaderTask;

public class ImageAdapter extends BaseAdapter {
    private ExtendedApplication application;
    private String[] imageUris;
    private int imageSizePixels;

    public ImageAdapter(ExtendedApplication application, String[] imageUris, int imageSizePixels) {
        this.application = application;
        this.imageUris = imageUris;
        this.imageSizePixels = imageSizePixels;
    }

    public int getCount() {
        return imageUris.length;
    }

    public Object getItem(int position) {
        return null;
    }

    public long getItemId(int position) {
        return 0;
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView = (ImageView) convertView;

        // inflate a view if we can't recycle
        if (imageView == null) {
            LayoutInflater inflater = (LayoutInflater) application
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            imageView = (ImageView) inflater.inflate(R.layout.grid_image, null);
            imageView.setScaleType(ScaleType.CENTER_CROP);
        }

        Resources res = application.getResources();

        // set the image
        Uri imageUri = Uri.parse(imageUris[position]);
        // Log.v("ImageAdapter", "Setting " + imageUri + ", want " +
        // imageSizePixels + " px");
        if (!BitmapLoaderTask.cancelPotentialWork(imageView, imageUri)) {
            BitmapLoaderTask task = new BitmapLoaderTask(imageView, imageSizePixels,
                    imageSizePixels, application);
            AsyncDrawable placeholder = new AsyncDrawable(res, null, task);
            imageView.setImageDrawable(placeholder);
            task.execute(imageUri);
        }

        return imageView;
    }

}

Java Source Code List