Question

我正在从网址下载图片并在我的Android应用程序上显示，但我无法根据我的要求调整图片大小。

private Bitmap decodeFile(File f) {
    try {
        //Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        FileInputStream stream1 = new FileInputStream(f);
        BitmapFactory.decodeStream(stream1, null, o);
        stream1.close();

        //Find the correct scale value. It should be the power of 2.

        // Set width/height of recreated image
        final int REQUIRED_SIZE = 285;

        int width_tmp = o.outWidth, height_tmp = o.outHeight;
        int scale = 1;
        while (true) {
            if (width_tmp / 2 < REQUIRED_SIZE || height_tmp / 2 < REQUIRED_SIZE)
                break;
            width_tmp /= 1;
            height_tmp /= 1;
            scale *= 2;
        }
        //decode with current scale values
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        FileInputStream stream2 = new FileInputStream(f);
        Bitmap bitmap = BitmapFactory.decodeStream(stream2, null, o2);
        stream2.close();
        return bitmap;
    } catch (FileNotFoundException e) {
    } catch (IOException e) {
        e.printStackTrace();
    }
    return null;


}

现在任何人都可以告诉我如何将图像大小调整为250 * 250像素也提前还要

Answer 1

尝试并使用Picasso库 - http://square.github.io/picasso/。

使用和集成相当容易，并且有一个resize方法正是这样做的。

Picasso.with(context).load(url).resize(250, 250).centerCrop().into(imageView);

你基本上放了＆＃39; url＆＃39;你的网址。

Android图片调整大小

1 个答案: