Android Open Source - Reddit-Underground Image View Screen

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Back to project page Reddit-Underground.

License

The source code is released under:

This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a co...

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Java Source Code

package com.mikedaguillo.reddit_underground;
//from   w w  w.j av a  2  s  .  c  o m
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.util.Base64;
import android.util.Log;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.widget.ImageView;

import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;

/**
 * Created by Mike on 12/19/2014.
 */
public class ImageViewScreen extends ActionBarActivity{

    private WebView webView;
    public static final String TAG = ImageViewScreen.class.getSimpleName(); //Tag for error messages

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.image_view_layout);

        webView = (WebView) findViewById(R.id.webView);

        // Sets the zoom settings and default image size on load
        webView.getSettings().setLoadWithOverviewMode(true);
        webView.getSettings().setUseWideViewPort(true);
        webView.getSettings().setBuiltInZoomControls(true);

        Intent intent = getIntent();
        byte[] imageByteArray = intent.getByteArrayExtra("Image_Byte_Array");
        if (imageByteArray != null){
            String html="<html><body><img src='{IMAGE_URL}' /></body></html>";

            String imgageBase64 = Base64.encodeToString(imageByteArray, Base64.DEFAULT);
            String imageString = "data:image/png;base64," + imgageBase64;

            // Use image for the img src parameter in your html and load to webview
            html = html.replace("{IMAGE_URL}", imageString);
            webView.loadDataWithBaseURL("file:///android_asset/", html, "text/html", "utf-8", "");

        }
        else {
            String html="<html><body><img src='{IMAGE_URL}' /></body></html>";
            Bitmap defaultImage = BitmapFactory.decodeResource(getApplicationContext().getResources(), R.drawable.default_reddit_icon);

            // Convert bitmap to Base64 encoded image for web
            ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
            defaultImage.compress(Bitmap.CompressFormat.PNG, 100, byteArrayOutputStream);
            byte[] byteArray = byteArrayOutputStream.toByteArray();
            String imgageBase64 = Base64.encodeToString(byteArray, Base64.DEFAULT);
            String image = "data:image/png;base64," + imgageBase64;

            // Use image for the img src parameter in your html and load to webview
            html = html.replace("{IMAGE_URL}", image);
            webView.loadDataWithBaseURL("file:///android_asset/", html, "text/html", "utf-8", "");

        }

    }
}

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