+package com.owncloud.android.ui.adapter;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.Bitmap.CompressFormat;
+import android.graphics.BitmapFactory;
+import android.os.Environment;
+import android.util.Log;
+
+import com.jakewharton.disklrucache.DiskLruCache;
+import com.owncloud.android.BuildConfig;
+import com.owncloud.android.utils.Log_OC;
+
+public class DiskLruImageCache {
+
+ private DiskLruCache mDiskCache;
+ private CompressFormat mCompressFormat = CompressFormat.JPEG;
+ private int mCompressQuality = 70;
+ private static final int APP_VERSION = 1;
+ private static final int VALUE_COUNT = 1;
+ private static final String TAG = "DiskLruImageCache";
+
+ public DiskLruImageCache( Context context,String uniqueName, int diskCacheSize,
+ CompressFormat compressFormat, int quality ) {
+ try {
+ final File diskCacheDir = getDiskCacheDir(context, uniqueName );
+ mDiskCache = DiskLruCache.open( diskCacheDir, APP_VERSION, VALUE_COUNT, diskCacheSize );
+ mCompressFormat = compressFormat;
+ mCompressQuality = quality;
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ }
+
+ private boolean writeBitmapToFile( Bitmap bitmap, DiskLruCache.Editor editor )
+ throws IOException, FileNotFoundException {
+ OutputStream out = null;
+ try {
+ out = new BufferedOutputStream( editor.newOutputStream( 0 ), Utils.IO_BUFFER_SIZE );
+ return bitmap.compress( mCompressFormat, mCompressQuality, out );
+ } finally {
+ if ( out != null ) {
+ out.close();
+ }
+ }
+ }
+
+ private File getDiskCacheDir(Context context, String uniqueName) {
+
+ // Check if media is mounted or storage is built-in, if so, try and use external cache dir
+ // otherwise use internal cache dir
+ final String cachePath =
+ Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState()) ||
+ !Utils.isExternalStorageRemovable() ?
+ Utils.getExternalCacheDir(context).getPath() :
+ context.getCacheDir().getPath();
+
+ Log_OC.d("DiskCache", "create dir: " + cachePath + File.separator + uniqueName);
+
+ return new File(cachePath + File.separator + uniqueName);
+ }
+
+ public void put( String key, Bitmap data ) {
+
+ DiskLruCache.Editor editor = null;
+ try {
+ editor = mDiskCache.edit( key );
+ if ( editor == null ) {
+ return;
+ }
+
+ if( writeBitmapToFile( data, editor ) ) {
+ mDiskCache.flush();
+ editor.commit();
+ if ( BuildConfig.DEBUG ) {
+ Log.d( "cache_test_DISK_", "image put on disk cache " + key );
+ }
+ } else {
+ editor.abort();
+ if ( BuildConfig.DEBUG ) {
+ Log.d( "cache_test_DISK_", "ERROR on: image put on disk cache " + key );
+ }
+ }
+ } catch (IOException e) {
+ if ( BuildConfig.DEBUG ) {
+ Log.d( "cache_test_DISK_", "ERROR on: image put on disk cache " + key );
+ }
+ try {
+ if ( editor != null ) {
+ editor.abort();
+ }
+ } catch (IOException ignored) {
+ }
+ }
+
+ }
+
+ public Bitmap getBitmap( String key ) {
+
+ 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, Utils.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 ? "not found" : "image read from disk " + key);
+ }
+
+ return bitmap;
+
+ }
+
+ public boolean containsKey( String key ) {
+
+ boolean contained = false;
+ DiskLruCache.Snapshot snapshot = null;
+ try {
+ snapshot = mDiskCache.get( key );
+ contained = snapshot != null;
+ } catch (IOException e) {
+ e.printStackTrace();
+ } finally {
+ if ( snapshot != null ) {
+ snapshot.close();
+ }
+ }
+
+ return contained;
+
+ }
+
+ public void clearCache() {
+ if ( BuildConfig.DEBUG ) {
+ Log.d( "cache_test_DISK_", "disk cache CLEARED");
+ }
+ try {
+ mDiskCache.delete();
+ } catch ( IOException e ) {
+ e.printStackTrace();
+ }
+ }
+
+ public File getCacheFolder() {
+ return mDiskCache.getDirectory();
+ }
+
+}
\ No newline at end of file
projects / pub / Android / ownCloud.git / commitdiff