Android example source code file (ViewImage.java)

This example Android source code file (ViewImage.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

activity, activitynotfoundexception, android, app, application, content, dialog_no_radar, handler, imageview, intent, loadthread, menu_author, menu_map, menu_radar, menu_view, override, string, textview, ui, view

The ViewImage.java Android example source code

/*
 * Copyright (C) 2008 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.android.panoramio;

import com.google.android.maps.GeoPoint;

import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.ActivityNotFoundException;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.widget.ImageView;
import android.widget.TextView;

/**
 * Activity which displays a single image.
 */
public class ViewImage extends Activity {
    private static final String TAG = "Panoramio";

    private static final int MENU_RADAR = Menu.FIRST + 1;

    private static final int MENU_MAP = Menu.FIRST + 2;

    private static final int MENU_AUTHOR = Menu.FIRST + 3;

    private static final int MENU_VIEW = Menu.FIRST + 4;

    private static final int DIALOG_NO_RADAR = 1;

    PanoramioItem mItem;

    private Handler mHandler;

    private ImageView mImage;

    private TextView mTitle;

    private TextView mOwner;
    
    private View mContent;

    private int mMapZoom;

    private int mMapLatitudeE6;

    private int mMapLongitudeE6;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.view_image);

        // Remember the user's original search area and zoom level
        Intent i = getIntent();
        mItem = i.getParcelableExtra(ImageManager.PANORAMIO_ITEM_EXTRA);
        mMapZoom = i.getIntExtra(ImageManager.ZOOM_EXTRA, Integer.MIN_VALUE);
        mMapLatitudeE6 = i.getIntExtra(ImageManager.LATITUDE_E6_EXTRA, Integer.MIN_VALUE);
        mMapLongitudeE6 = i.getIntExtra(ImageManager.LONGITUDE_E6_EXTRA, Integer.MIN_VALUE);
        
        mHandler = new Handler();

        mContent = findViewById(R.id.content);
        mImage = (ImageView) findViewById(R.id.image);
        mTitle = (TextView) findViewById(R.id.title);
        mOwner = (TextView) findViewById(R.id.owner);
        
        mContent.setVisibility(View.GONE);
        getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS,
                Window.PROGRESS_VISIBILITY_ON);
        new LoadThread().start();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        super.onCreateOptionsMenu(menu);
        menu.add(0, MENU_RADAR, 0, R.string.menu_radar)
                .setIcon(R.drawable.ic_menu_radar)
                .setAlphabeticShortcut('R');
        menu.add(0, MENU_MAP, 0, R.string.menu_map)
                .setIcon(R.drawable.ic_menu_map)
                .setAlphabeticShortcut('M');
        menu.add(0, MENU_AUTHOR, 0, R.string.menu_author)
                .setIcon(R.drawable.ic_menu_author)
                .setAlphabeticShortcut('A');
        menu.add(0, MENU_VIEW, 0, R.string.menu_view)
                .setIcon(android.R.drawable.ic_menu_view)
                .setAlphabeticShortcut('V');
        return true;
    }
    
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case MENU_RADAR: {
            // Launch the radar activity (if it is installed)
            Intent i = new Intent("com.google.android.radar.SHOW_RADAR");
            GeoPoint location = mItem.getLocation();
            i.putExtra("latitude", (float)(location.getLatitudeE6() / 1000000f));
            i.putExtra("longitude", (float)(location.getLongitudeE6() / 1000000f));
            try {
                startActivity(i);
            } catch (ActivityNotFoundException ex) {
                showDialog(DIALOG_NO_RADAR);
            }
            return true;
        }
        case MENU_MAP: {
            // Display our custom map 
            Intent i = new Intent(this, ViewMap.class);
            i.putExtra(ImageManager.PANORAMIO_ITEM_EXTRA, mItem);
            i.putExtra(ImageManager.ZOOM_EXTRA, mMapZoom);
            i.putExtra(ImageManager.LATITUDE_E6_EXTRA, mMapLatitudeE6);
            i.putExtra(ImageManager.LONGITUDE_E6_EXTRA, mMapLongitudeE6);
            
            startActivity(i);

            return true;
        }
        case MENU_AUTHOR: {
            // Display the author info page in the browser
            Intent i = new Intent(Intent.ACTION_VIEW);
            i.setData(Uri.parse(mItem.getOwnerUrl()));
            startActivity(i);
            return true;
        }
        case MENU_VIEW: {
            // Display the photo info page in the browser
            Intent i = new Intent(Intent.ACTION_VIEW);
            i.setData(Uri.parse(mItem.getPhotoUrl()));
            startActivity(i);
            return true;
        }
        }

        return super.onOptionsItemSelected(item);
    }
    
    @Override
    protected Dialog onCreateDialog(int id) {
        switch (id) {
        case DIALOG_NO_RADAR:
            AlertDialog.Builder builder = new AlertDialog.Builder(this);
            return builder.setTitle(R.string.no_radar_title)
                .setMessage(R.string.no_radar)
                .setIcon(android.R.drawable.ic_dialog_alert)
                .setPositiveButton(android.R.string.ok, null).create();
        }
        return null;
    }


    /**
     * Utility to load a larger version of the image in a separate thread.
     *
     */
    private class LoadThread extends Thread {

        public LoadThread() {
        }

        @Override
        public void run() {
            try {
                String uri = mItem.getThumbUrl();
                uri = uri.replace("thumbnail", "medium");
                final Bitmap b = BitmapUtils.loadBitmap(uri);
                mHandler.post(new Runnable() {
                    public void run() {

                        mImage.setImageBitmap(b);
                        mTitle.setText(mItem.getTitle());
                        mOwner.setText(mItem.getOwner());
                        mContent.setVisibility(View.VISIBLE);
                        getWindow().setFeatureInt(Window.FEATURE_INDETERMINATE_PROGRESS,
                                Window.PROGRESS_VISIBILITY_OFF);
                    }
                });
            } catch (Exception e) {
                Log.e(TAG, e.toString());
            }
        }
    }

}