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- public class BitmapResizer {
- public static Bitmap decodeFile(File f,int requiredSize){
- try {
- //decode image size
- BitmapFactory.Options o = new BitmapFactory.Options();
- o.inJustDecodeBounds = true;
- BitmapFactory.decodeStream(new FileInputStream(f),null,o);
- //Find the correct scale value. It should be the power of 2.
- final int REQUIRED_SIZE=requiredSize;
- int width_tmp=o.outWidth, height_tmp=o.outHeight;
- int scale=1;
- while(true){
- if(width_tmp/2<REQUIRED_SIZE || height_tmp/2<REQUIRED_SIZE)
- break;
- width_tmp/=2;
- height_tmp/=2;
- scale*=2;
- }
- //decode with inSampleSize
- BitmapFactory.Options o2 = new BitmapFactory.Options();
- o2.inSampleSize=scale;
- return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
- } catch (FileNotFoundException e) {
- }
- return null;
- }
- }
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