Question

我想从输入流中获取位图，然后重新调整大小。但我收到了以下错误。

如果我没有重新调整大小就返回，它可以正常工作。

有人可以帮忙吗？

logcat的：

01-07 01:38:33.412: D/skia(1307): --- SkImageDecoder::Factory returned null

CODE：

private Bitmap getBitmap(String url)
{
    try {
        Bitmap bitmap=null;
        URL imageUrl = new URL(url);

        HttpURLConnection conn = (HttpURLConnection) imageUrl.openConnection();
        conn.setConnectTimeout(10000);
        conn.setReadTimeout(10000);
        conn.setDoInput(true);
        conn.setInstanceFollowRedirects(true);
        conn.connect();
        InputStream is=conn.getInputStream();

        //return BitmapFactory.decodeStream(is); // THIS WORKS FINE
        bitmap = decodeFile(is);
        is.close();
        return bitmap; 
    } catch (Exception ex){
       return null;
    }
}

private Bitmap decodeFile(InputStream istream){
    BufferedInputStream is = new BufferedInputStream(istream);
    try {
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(is,null,o);

        final int REQUIRED_SIZE=60;
        int height_tmp=o.outHeight;
        int scale=1;
        while(true){
            if(height_tmp/2<REQUIRED_SIZE)
                break;
            height_tmp/=2;
            scale*=2;
        }

        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize=scale;
        Log.d("insample", "aa: "+scale);
        return BitmapFactory.decodeStream(is, null, o2);
    } catch (Exception e) {
        Log.d("aaa","aa: "+e);
    } finally{
        try {
            is.close();
        } catch( IOException ignored ) {}
    }
    return null;
}

Answer 1

at

iv.setImageResource(resId);

resId是无效值...

将其更改为

iv.setImageResource(R.drawable.ic_launcher);

并测试代码

从输入流中获取位图并调整大小

1 个答案: