Android 图片压缩二：

public Bitmap zoomBitmap(Bitmap bitmap, int width, int height) { 
		int w = bitmap.getWidth(); 
		int h = bitmap.getHeight(); 
		Matrix matrix = new Matrix(); 
		float scaleWidth = ((float) width / w); 
		float scaleHeight = ((float) height / h); 
		matrix.postScale(scaleWidth, scaleHeight);// 利用矩阵进行缩放不会造成内存溢出 
		Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true); 
		return newbmp; 
	}