加载图片出现OOM

BitmapFactory.Options options = new BitmapFactory.Options();
//获取屏幕的宽高
DisplayMetrics metrics = getResources().getDisplayMetrics();
int widthScreen   = metrics.widthPixels;
int heightScreen = metrics.heightPixels;
try {
ExifInterface exifInterface = new ExifInterface(PATH);
/*获取屏幕的宽高*/
int picWidth  = exifInterface.getAttributeInt(ExifInterface.TAG_IMAGE_WIDTH,0);
int  picHeight  = exifInterface.getAttributeInt(ExifInterface.TAG_IMAGE_LENGTH,0);

/*图片的高度/屏幕的高度*/
int  widthSimple = (int) (picWidth*1f/widthScreen + 0.5f);
int  heightSimple = (int) (picHeight*1f/heightScreen + 0.5f);

int simple  = (int) (Math.sqrt(widthSimple*widthSimple+heightSimple*heightScreen)+0.5f);
options.inSampleSize = simple;
BitmapFactory.decodeFile(PATH,options);