将数据从 Activity 传递到没有 onCreate 的片段

Question

是否可以使用 Bundle 将数据从 Activity 传递到没有 OnCreate

的 Fragment

Answer 1

试试这个

public class SampleActivity extends AppCompactActivity {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sample);

        if (savedInstanceState == null) {
            Fragment fragment = new SampleFragment();

            Bundle args = new Bundle();

            args.putInt("sample_int", 1);

            fragment.setArguments(args);

            getSupportFragmentManager().beginTransaction()
                 .add(R.id.container, fragment)
                 .commit();
        }
    }
}



public class SampleFragment extends Fragment {


    @Override
    public void onResume() {
        Bundle args = getArguments();

        if (args != null) {
            int sampleInt = args.getInt("sample_int", -1);
        }
    }
}

Answer 2

从 Activity，您发送数据的目的是：

Bundle bundle = new Bundle();
bundle.putString("edttext", "From Activity");
// set Fragmentclass Arguments
Fragmentclass fragobj = new Fragmentclass();
fragobj.setArguments(bundle);

并在 Fragment onCreateView 方法中：

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
        Bundle savedInstanceState) {
    String strtext = getArguments().getString("edttext");    
    return inflater.inflate(R.layout.fragment, container, false);
}