Android BitmapFactory 文件下载前得到文件宽高

Android  BitmapFactory  文件下载前得到文件宽高



http://s.nownews.com/media_crop/119027/hash/22/c9/22c9873afe491faf76ee832b96dbfec8.JPG
com.example.java.m1117a I/System.out: 4737
com.example.java.m1117a I/System.out: 3264
com.example.java.m1117a I/System.out: image/jpeg


https://c1.staticflickr.com/9/8020/7247612044_97c88b6741_b.jpg
com.example.java.m1117a I/System.out: 1024
com.example.java.m1117a I/System.out: 682
com.example.java.m1117a I/System.out: image/jpeg





public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        T1 t = new T1();
        t.execute("test");
    }

    class T1 extends AsyncTask<String, Integer, Bitmap> {

        @Override
        protected Bitmap doInBackground(String... params) {
            Bitmap bitmap = null;
            try {
//                InputStream is =  HttpTool.gis("https://c1.staticflickr.com/9/8020/7247612044_97c88b6741_b.jpg");
                InputStream is = HttpTool.gis("http://s.nownews.com/media_crop/119027/hash/22/c9/22c9873afe491faf76ee832b96dbfec8.JPG");
                BitmapFactory.Options options = new BitmapFactory.Options();
                options.inJustDecodeBounds = true;
                BitmapFactory.decodeStream(is, null, options);
                System.out.println(options.outHeight);
                System.out.println(options.outWidth);
                System.out.println(options.outMimeType);
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onPostExecute(Bitmap bitmap) {
            super.onPostExecute(bitmap);
        }
    }
}