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AntennaPod
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Images are now scaled down in order to save memory

This commit is contained in:
daniel oeh 2012-07-06 18:15:07 +02:00
parent 65fe944765
commit 1e4a3871ff
1 changed files with 39 additions and 2 deletions
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41
src/de/podfetcher/asynctask/FeedImageLoader.java
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@ -76,7 +76,7 @@ public class FeedImageLoader {
public void wipeImageCache() {
imageCache.evictAll();
}
public boolean isInCache(FeedImage image) {
return imageCache.get(image.getId()) != null;
}
@ -86,9 +86,13 @@ public class FeedImageLoader {
}
class BitmapWorkerTask extends AsyncTask<FeedImage, Void, Void> {
/** The preferred width and height of a bitmap. */
private static final int PREFERRED_LENGTH = 300;
private static final String TAG = "BitmapWorkerTask";
private ImageView target;
private Bitmap bitmap;
private Bitmap decodedBitmap;
public BitmapWorkerTask(ImageView target) {
super();
@ -101,10 +105,43 @@ public class FeedImageLoader {
target.setImageBitmap(bitmap);
}
private int calculateSampleSize(int width, int height) {
int max = Math.max(width, height);
if (max < PREFERRED_LENGTH) {
return max;
} else {
// find first sample size where max / sampleSize <
// PREFERRED_LENGTH
for (int sampleSize = 1, power = 0;; power++, sampleSize = (int) Math
.pow(2, power)) {
int newLength = max / sampleSize;
if (newLength <= PREFERRED_LENGTH) {
if (newLength > 0) {
return sampleSize;
} else {
return sampleSize - 1;
}
}
}
}
}
@Override
protected Void doInBackground(FeedImage... params) {
if (params[0].getFile_url() != null) {
bitmap = BitmapFactory.decodeFile(params[0].getFile_url());
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(params[0].getFile_url(), options);
int sampleSize = calculateSampleSize(options.outWidth,
options.outHeight);
options.inJustDecodeBounds = false;
options.inSampleSize = sampleSize;
decodedBitmap = BitmapFactory.decodeFile(
params[0].getFile_url(), options);
bitmap = Bitmap.createScaledBitmap(decodedBitmap,
PREFERRED_LENGTH, PREFERRED_LENGTH, false);
addBitmapToCache(params[0].getId(), bitmap);
Log.d(TAG, "Finished loading bitmaps");
} else {