thoerup/side9/ImageAdapter.java

package dk.thoerup.side9;

import java.io.File;
import java.util.ArrayList;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;
import android.util.DisplayMetrics;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;

public class ImageAdapter extends BaseAdapter {
    //int mGalleryItemBackground;
    private Context mContext;
    
    ArrayList<String> mBitmapPaths = new ArrayList<String>();
    ArrayList<Bitmap> mBitmaps = new ArrayList<Bitmap>();
    
    int size;

    public ImageAdapter(Context c) {
        mContext = c;
        
        String path = Environment.getExternalStorageDirectory().getPath() + "/Side9" ;
        
        
        File root = new File(path);
        
        if (root.exists() == false) {
                Toast.makeText(mContext, "Side9 folder not found on sdcard", Toast.LENGTH_LONG).show();
                return;
        } 
        
        File files[] = root.listFiles();
        for (File f : files) {          
            Bitmap bmp = BitmapFactory.decodeFile( f.getPath() );
            Bitmap scaled =  Bitmap.createScaledBitmap(bmp, bmp.getWidth()/4, bmp.getHeight()/4, true);
            
                mBitmapPaths.add(  f.getPath() );
                mBitmaps.add(scaled);
        }
        
        size = getSize();
    }

    public int getCount() {
        return mBitmaps.size();
    }

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

    public long getItemId(int position) {
        return position;
    }
    
    public String getImagePath(int position) {
        return mBitmapPaths.get(position);
    }
    
    private int getSize() {
                 DisplayMetrics metrics = new DisplayMetrics();
                 WindowManager wmgr = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
                 wmgr.getDefaultDisplay().getMetrics(metrics);
                 if (metrics.widthPixels < 480) {
                         return 150;
                 } else {
                         return 200;
                 }
    }

    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        if (convertView == null) {  // if it's not recycled, initialize some attributes
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(size, size));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setAdjustViewBounds(true);   
            imageView.setPadding(4, 4, 4, 4);
        } else {
            imageView = (ImageView) convertView;
        }


        imageView.setImageBitmap( mBitmaps.get(position) );
        return imageView;

    }
}
1	package dk.thoerup.side9;
2
3	import java.io.File;
4	import java.util.ArrayList;
5
6	import android.content.Context;
7	import android.graphics.Bitmap;
8	import android.graphics.BitmapFactory;
9	import android.os.Environment;
10	import android.util.DisplayMetrics;
11	import android.view.View;
12	import android.view.ViewGroup;
13	import android.view.WindowManager;
14	import android.widget.BaseAdapter;
15	import android.widget.GridView;
16	import android.widget.ImageView;
17	import android.widget.Toast;
18
19	public class ImageAdapter extends BaseAdapter {
20	//int mGalleryItemBackground;
21	private Context mContext;
22
23	ArrayList<String> mBitmapPaths = new ArrayList<String>();
24	ArrayList<Bitmap> mBitmaps = new ArrayList<Bitmap>();
25
26	int size;
27
28	public ImageAdapter(Context c) {
29	mContext = c;
30
31	String path = Environment.getExternalStorageDirectory().getPath() + "/Side9" ;
32
33
34
35	File root = new File(path);
36
37	if (root.exists() == false) {
38	Toast.makeText(mContext, "Side9 folder not found on sdcard", Toast.LENGTH_LONG).show();
39	return;
40	}
41
42	File files[] = root.listFiles();
43	for (File f : files) {
44	Bitmap bmp = BitmapFactory.decodeFile( f.getPath() );
45	Bitmap scaled = Bitmap.createScaledBitmap(bmp, bmp.getWidth()/4, bmp.getHeight()/4, true);
46
47	mBitmapPaths.add( f.getPath() );
48	mBitmaps.add(scaled);
49	}
50
51	size = getSize();
52	}
53
54	public int getCount() {
55	return mBitmaps.size();
56	}
57
58	public Object getItem(int position) {
59	return position;
60	}
61
62	public long getItemId(int position) {
63	return position;
64	}
65
66	public String getImagePath(int position) {
67	return mBitmapPaths.get(position);
68	}
69
70	private int getSize() {
71	DisplayMetrics metrics = new DisplayMetrics();
72	WindowManager wmgr = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);
73	wmgr.getDefaultDisplay().getMetrics(metrics);
74	if (metrics.widthPixels < 480) {
75	return 150;
76	} else {
77	return 200;
78	}
79	}
80
81	public View getView(int position, View convertView, ViewGroup parent) {
82	ImageView imageView;
83	if (convertView == null) { // if it's not recycled, initialize some attributes
84	imageView = new ImageView(mContext);
85	imageView.setLayoutParams(new GridView.LayoutParams(size, size));
86	imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
87	imageView.setAdjustViewBounds(true);
88	imageView.setPadding(4, 4, 4, 4);
89	} else {
90	imageView = (ImageView) convertView;
91	}
92
93
94	imageView.setImageBitmap( mBitmaps.get(position) );
95	return imageView;
96
97	}
98	}