Add public keys to FrBuilder class

[Kolyall]

for exampe if your Fragment is :

@FragmentWithArgs
public class Body extends Fragment {
    @Arg String request;
    @Arg Integer value;

then create in Builder class this:

public final class BodyBuilder {
    public static final String ARG_REQUEST = "request";
    public static final String ARG_VALUE = "value";
  private final Bundle mArguments = new Bundle();

  public BodyBuilder(...) {

    mArguments.putString(ARG_REQUEST, request);

    mArguments.putInt(ARG_VALUE, userPointsValue);
  }

[sockeqwe]

What's the benefit?

[Kolyall]

for example
you have FirstActivity :

class FirstActivity extends Activity{
@Override
    protected void onCreate(Bundle savedInstanceState) {
     Intent intent = new Intent(this, SecondActivity.class)  
 intent.putExtra(BodyBuilder.ARG_REQUEST,"a string");
 intent.putExtra(BodyBuilder.ARG_VALUE,111);
startActivity(intent );
}
}

your SecondActivity:

class SecondActivity extends Activity{
@Override
    protected void onCreate(Bundle savedInstanceState) {
     Intent data = getIntent();
String request=  data.getStringExtra(BodyBuilder.ARG_REQUEST);
Integer value =  data.getIntExtra(BodyBuilder.ARG_VALUE);
setFragment(request, value);
}
}

OR
you have FirstActivity :

class FirstActivity extends Activity{
@Override
    protected void onCreate(Bundle savedInstanceState) {
     Intent intent = new Intent(this, SecondActivity.class)  
 Bundle fragmentArgs = new Bundle();
            fragmentArgs.putString(BodyBuilder.ARG_REQUEST,"a string");
            fragmentArgs.putInt(BodyBuilder.ARG_VALUE,111);
            intent.putExtra("dataForFragment",fragmentArgs);
startActivity(intent );
}
}

your SecondActivity:

class SecondActivity extends Activity{
@Override
    protected void onCreate(Bundle savedInstanceState) {
     Bundle dataBundle = getIntent().getBundleExtra("dataForFragment");
 Body body = BodyBuilder.newBody(dataBundle);

}
}

[sockeqwe]

I consider creating bundle for the arguments by your own as bad practice, because by instantiating it by yourself you can't be sure that all required arguments are in the bundle.

Maybe it's worth to thinking about adding a Builder.toBundle() method and a new Builder(Bundle) constructor, but again, I think you loose a lot of typesafety and checks that are provided by the builder ...

[Kolyall]

I just wanted to merge your lib with this one for activity:
https://github.com/emilsjolander/IntentBuilder

by using some like this:

@IntentBuilder
public class SecondActivity extends Activity {
    @Extra Bundle dataBundle;
    @Extra Bundle dataBundle2;
protected void onCreate(Bundle savedInstanceState) {

      Body body = BodyBuilder.newBody(dataBundle);
      Body2 body2 = Body2Builder.newBody2(dataBundle2);
}