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Update DiskLruImageCache.java #9

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Update DiskLruImageCache.java #9

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69 changes: 40 additions & 29 deletions CaptechBuzz/src/com/captechconsulting/captechbuzz/model/images/DiskLruImageCache.java
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.util.LruCache;

import android.content.Context;
import android.graphics.Bitmap;
Expand All @@ -22,19 +23,21 @@
* Implementation of DiskLruCache by Jake Wharton
* modified from http://stackoverflow.com/questions/10185898/using-disklrucache-in-android-4-0-does-not-provide-for-opencache-method
*/
public class DiskLruImageCache implements ImageCache {
public class DiskLruImageCache extends LruCache<String, Bitmap> implements ImageCache {

private DiskLruCache mDiskCache;
private CompressFormat mCompressFormat = CompressFormat.JPEG;
private static int IO_BUFFER_SIZE = 8*1024;
private int mCompressQuality = 70;
private static final int APP_VERSION = 1;
private static final int VALUE_COUNT = 1;
private Context mContext;

public DiskLruImageCache(Context context,String uniqueName, int diskCacheSize,
CompressFormat compressFormat, int quality ) {
try {
final File diskCacheDir = getDiskCacheDir(context, uniqueName );
mContext = context;
mDiskCache = DiskLruCache.open( diskCacheDir, APP_VERSION, VALUE_COUNT, diskCacheSize );
mCompressFormat = compressFormat;
mCompressQuality = quality;
Expand Down Expand Up @@ -64,7 +67,7 @@ private File getDiskCacheDir(Context context, String uniqueName) {

@Override
public void putBitmap( String key, Bitmap data ) {

put(key, data); // Save on RAM
DiskLruCache.Editor editor = null;
try {
editor = mDiskCache.edit( key );
Expand Down Expand Up @@ -100,35 +103,40 @@ public void putBitmap( String key, Bitmap data ) {

@Override
public Bitmap getBitmap( String key ) {

Bitmap bitmap = null;
DiskLruCache.Snapshot snapshot = null;
try {

snapshot = mDiskCache.get( key );
if ( snapshot == null ) {
return null;
if(mContext == null)
return null;
if(isInternetAvailable(mContext))
return get(key); // Access RAM when net is available
else {
// Otherwise, access the DISK
Bitmap bitmap = null;
DiskLruCache.Snapshot snapshot = null;
try {

snapshot = mDiskCache.get( key );
if ( snapshot == null ) {
return null;
}
final InputStream in = snapshot.getInputStream( 0 );
if ( in != null ) {
final BufferedInputStream buffIn =
new BufferedInputStream( in, IO_BUFFER_SIZE );
bitmap = BitmapFactory.decodeStream( buffIn );
}
} catch ( IOException e ) {
e.printStackTrace();
} finally {
if ( snapshot != null ) {
snapshot.close();
}
}
final InputStream in = snapshot.getInputStream( 0 );
if ( in != null ) {
final BufferedInputStream buffIn =
new BufferedInputStream( in, IO_BUFFER_SIZE );
bitmap = BitmapFactory.decodeStream( buffIn );
}
} catch ( IOException e ) {
e.printStackTrace();
} finally {
if ( snapshot != null ) {
snapshot.close();

if ( BuildConfig.DEBUG ) {
Log.d( "cache_test_DISK_", bitmap == null ? "" : "image read from disk " + key);
}

return bitmap;
}

if ( BuildConfig.DEBUG ) {
Log.d( "cache_test_DISK_", bitmap == null ? "" : "image read from disk " + key);
}

return bitmap;

}

public boolean containsKey( String key ) {
Expand Down Expand Up @@ -165,7 +173,10 @@ public File getCacheFolder() {
return mDiskCache.getDirectory();
}


public boolean isInternetAvailable(Context context) {
ConnectivityManager cm = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
return cm.getActiveNetworkInfo() != null ? cm.getActiveNetworkInfo().isConnectedOrConnecting() : false;
}



Expand Down