Android 按指定大小读取图片的实例

public static int[] getImageWH(String path) {	int[] wh = {-1, -1}; if (path == null) { 	return wh; } File file = new File(path); if (file.exists() && !file.isDirectory()) {  try {   BitmapFactory.Options options = new BitmapFactory.Options();   options.inJustDecodeBounds = true;   InputStream is = new FileInputStream(path);   BitmapFactory.decodeStream(is, null, options);   wh[0] = options.outWidth;   wh[1] = options.outHeight;  }  catch (Exception e) {   Log.w(TAG, "getImageWH Exception.", e);  } } return wh;} public static Bitmap createBitmapByScale(String path, int scale) {	Bitmap bm = null; try { 	//获取宽高  int[] wh = getImageWH(path);  if (wh[0] == -1 || wh[1] == -1) {  	return null;  }  //读取图片  BitmapFactory.Options options = new BitmapFactory.Options();  options.inSampleSize = Math.max(wh[0]/scale, wh[1]/scale);  InputStream is = new FileInputStream(path);  	bm = BitmapFactory.decodeStream(is, null, options); } catch (Exception e) { 	Log.w(TAG, "createBitmapByScale Exception.", e); } catch (OutOfMemoryError e) {  Log.w(TAG, "createBitmapByScale OutOfMemoryError.", e);  //TODO: out of memory deal.. } return bm;}