位图变大 [英] Bitmap to large

问题描述

可能的重复:
位图太大而无法上传到纹理中"

我正在使用相机拍照，然后将图片保存在 sdcard 上，然后使用

I am taking a picture using the camera, then I am saving the picture on the sdcard, then using

Bitmap bm = BitmapFactory.decodeFile(path);

要获取位图，然后

imageView.setImageBitmap(bm); 设置它.

但是当我使用

mFrameLayout.addView(imageView); 没有图像显示，我又回来了 Bitmap 要上传到纹理中

mFrameLayout.addView(imageView); no image is displayed and I get back Bitmap to large to be uploaded into texture

位图是1944高，2592宽

有什么想法吗?

我使用的是平板电脑，10.1 英寸，acer iconia，a500，运行 ics.

I am using a tablet, 10.1 inches, acer iconia, a500, running ics.

推荐答案

试试这个

public static Bitmap decodeFile(File f,int WIDTH,int HIGHT){
        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_WIDTH=WIDTH;
            final int REQUIRED_HIGHT=HIGHT;
            //Find the correct scale value. It should be the power of 2.
            int scale=1;
            while(o.outWidth/scale/2>=REQUIRED_WIDTH && o.outHeight/scale/2>=REQUIRED_HIGHT)
                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;
    }

这将根据您通过的宽度和高度缩放位图

this will scale bitmap as per width and height you pass

这篇关于位图变大的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！