android 无须root截图方案的实现

public class EncoderFeeder {
   public static Bitmap screenshot() {
      String surfaceClassName;
      if (VERSION.SDK_INT <= 17) {
        surfaceClassName = "android.view.Surface";

      } else {
        surfaceClassName = "android.view.SurfaceControl";
      }
      Class<?> classname;
      Bitmap bm = null;
      try {
        classname = Class.forName(surfaceClassName);
        Method method = classname.getDeclaredMethod("screenshot",
              new Class[] { int.class, int.class });
        bm = (Bitmap) method.invoke(
              null,
              new Object[] { Integer.valueOf(Device.x),//分辨率
                   Integer.valueOf(Device.y) });
      } catch (Exception e) {
        e.printStackTrace();
      }

      return bm;
   }
  
}

export CLASSPATH=/data/app/com.test.syscreen-1.apk",
"exec app_process /system/bin com.test.syscreen.Main '@@'