Save itself as a file using bitmap, Bitmapfactory parse the picture from file and prevent oom

1. Use bitmap to save itself as a file

public boolean savebitmapasfile (String name, Bitmap Bitmap) {		
		file SaveFile = new File (cachedirectory, name);

		Boolean saved = false;
		FileOutputStream OS = null;
		try {
			log.d ("Filecache", "Saving File to Cache" + Savefile.getpath ());
			OS = new FileOutputStream (saveFile);
			Bitmap.compress (compressformat.png, MB, OS);
			Os.flush ();
			Os.close ();
			Saved = true;
		} catch (FileNotFoundException e) {
			e.printstacktrace ();
		} catch (IOException e) {
			e.printstacktrace (); c15/>}
		
		
		return saved;
	}

2. Bitmapfactory parse the picture from file and prevent Oom

/** get the closest proportion to the desired ratio */static int calculateinsamplesize (bitmapfactory.options bitmapoptions, int reqwidth, int reqheight)
		{Final int height = bitmapoptions.outheight;
		Final int width = bitmapoptions.outwidth;
		int samplesize = 1; if (Height > Reqheight | | width > reqwidth) {final int heightratio = Math.Round (float) height/(float) Reqheig
			HT);
			Final int widthRatio = Math.Round ((float) width/(float) reqwidth); SampleSize = HeightRatio < WidthRatio?
		Heightratio:widthratio;
	} return samplesize; } public static Bitmap Decodeimage (String filePath) {/** Decode image size */bitmapfactory.options o = new Bitmap
		Factory.options ();
		/** only take wide height to prevent oom */o.injustdecodebounds = true;

		Bitmapfactory.decodefile (FilePath, O);

		int Scale=calculateinsamplesize (o, Displaystats.maxitemwidthheight, displaystats.maxitemwidthheight);
		Bitmapfactory.options options=new bitmapfactory.options (); /** Decode with Insamplesize, the less memory used in the options than the direct calculation */OPTIONS.INsamplesize=scale;
		/** can be erased when the memory is low */options.inpurgeable = true;

		/** deep Copy */options.ininputshareable = true;
			Synchronized (ddgcontrolvar.decode_lock) {Bitmap result = Bitmapfactory.decodefile (FilePath, Options);
		return result; }
	}