Question

I have been trying to use reflection for a specifiec Field in the android.os.build class, the MANUFACTURER field…
I have tried by using this code :

try
    {
        Class myBuildClass = android.os.Build.class;
        Field m1 = Build.class.getDeclaredField("MANUFACTURER");
        validField = true;

        manufacturer = Build.MANUFACTURER;
    }
    catch(Exception ex)
    {
        manufacturer = Build.PRODUCT;
        System.err.println("getDeviceSpecifics, got an exception during getting Field : " + ex.toString());
    }

I am gettign the following errors :

06-01 11:26:37.639: WARN/dalvikvm(7342): VFY: unable to resolve static field 2 (MANUFACTURER) in Landroid/os/Build;
06-01 11:26:37.639: WARN/dalvikvm(7342): VFY:  rejecting opcode 0x62 at 0x0048

06-01 11:26:37.639: WARN/dalvikvm(7342): VFY:  rejected Lmypackage/android/managementModule/Management;.getDeviceSpecifics ()V
06-01 11:26:37.639: WARN/dalvikvm(7342): Verifier rejected class Lmypackage/android/managementModule/Management;

And when debugging I noticed that InvocationtargetException is continuesly thrown, so I am guessing I haven’t been implementing the whole Reflection principle correctly…
Any idea where things are going wrong or otherwise on how to implement Refelction for a single Field correctly ?

Answer 1

Perfect solution

try // reflection
  {
   Field manufacturerField = android.os.Build.class
     .getDeclaredField("MANUFACTURER");
   manufacturerField.setAccessible(true);
   String manufacturerName = manufacturerField.get(
     android.os.Build.class).toString();
   System.out.println("manufacturerName: " + manufacturerName);

  } catch (Exception ex) {

   System.err
     .println("getManufacturerName, got an exception during getting Field : "
       + ex.toString());
  }