WebApr 6, 2024 · ①减小宽高BitmapFactory.Options.inSampleSize. inSampleSize是BitmapFactory.Options的一个属性,改变它即可改变图片的宽高。如果该值设置为大于1的值(小于1的值即为1),就会请求解码器对原始图像进行二次采样,返回较小的图像以节省 … WebAug 15, 2013 · The sample size is the number of pixels in either dimension that correspond to a single pixel in the decoded bitmap. For example, inSampleSize == 4 returns an image that is 1/4 the width/height of the original, and 1/16 the number of pixels. Any value <= 1 is treated the same as 1. Note: the decoder uses a final value based on powers of 2, any ...
android - BitmapFactory.decodeStream returns null, when …
Web0. Bitmap bitmap = BitmapFactory.decodeFile (file.getAbsolutePath ()); This returns null, if. File paths to the image is wrong. when android cannot decode the bitmap image, so check if you can view the image in other image view software. if the above two point are okay in your code, it means you are getting a null value because its taken time ... WebFeb 19, 2007 · The problem is options.outHeight and options.outWidth are 0 when the image is captured in Landscape mode with AutoRotate on. If I turn off AutoRotate , it works fine. Since its width and height are 0 I was getting a null Bitmap at the end. can i use cctv hdd for pc
bitmapfactory.options - CSDN文库
WebMar 14, 2024 · BitmapFactory.Options是一个用于解码位图的类,它提供了一些选项来控制位图的解码过程,例如缩放、裁剪、颜色格式等。. 通过设置这些选项,我们可以在解码 … Web下面是Options中需要用到的属性: inJustDecodeBounds:如果设置为true,将不把图片的像素数组加载到内存中,仅加载一些额外的数据到Options中。 outHeight:图片的高度。 outWidth:图片的宽度。 inSampleSize:如果设置,图片将依据此采样率进行加载,不能设置为小于1的数。 WebJan 10, 2024 · Bitmap bitmap = BitmapFactory.decodeFile(pathToPicture); Assuming that your pathToPicture is correct, you can then add this bitmap image to an ImageView like . ImageView imageView = (ImageView) getActivity().findViewById(R.id.imageView); imageView.setImageBitmap(BitmapFactory.decodeFile(pathToPicture)); can i use cbd on probation in california