本文介绍了如何从10MB图像COM preSS位从相机300KB beforw在android系统设置的ImageView的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
Bitmap bitmap;
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmap = BitmapFactory.decodeFile(f.getAbsolutePath(),bitmapOptions);
终于有位来自摄像机的图像(我正在图像从高清晰度摄像机),这样大小可能是10MB。的
finally bitmap has the image from camera (i am taking image from a high resolution camera ) so size may be 10mb.
我想设置ImageView的位图,如下
I am trying to set the bitmap in imageview as below
portfolioPicImgId.setImageBitmap(bitmap);
- ,我想COM preSS影像分为300KB之前,我怎样才能实现
这个! - 我见过的其他计算器的答案,但如何指定确切地
300KB
推荐答案
你试过吗?
//decodes image and scales it to reduce memory consumption
private Bitmap decodeFile(File f){
try {
//Decode image size
BitmapFactory.Options o = new BitmapFactory.Options();
o.inJustDecodeBounds = true;
BitmapFactory.decodeStream(new FileInputStream(f),null,o);
//The new size we want to scale to
final int REQUIRED_SIZE=70;
//Find the correct scale value. It should be the power of 2.
int scale=1;
while(o.outWidth/scale/2>=REQUIRED_SIZE && o.outHeight/scale/2>=REQUIRED_SIZE)
scale*=2;
//Decode with inSampleSize
BitmapFactory.Options o2 = new BitmapFactory.Options();
o2.inSampleSize=scale;
return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
} catch (FileNotFoundException e) {}
return null;
}
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