LoginFragment.java

package com.halzhang.android.examples.dagger2example.login;

import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.EditText;

import com.halzhang.android.examples.dagger2example.BaseFragment;
import com.halzhang.android.examples.dagger2example.R;

/**
 * A simple {@link Fragment} subclass.
 * Use the {@link LoginFragment#newInstance} factory method to
 * create an instance of this fragment.
 */
public class LoginFragment extends BaseFragment implements LoginContract.View {

    private LoginContract.Presenter mPresenter;

    private EditText mUsername;
    private EditText mPassword;

    private OnLoginFragmentListener mListener;

    public LoginFragment() {
        // Required empty public constructor
    }

    /**
     * Use this factory method to create a new instance of
     * this fragment
     *
     * @return A new instance of fragment LoginFragment.
     */
    public static LoginFragment newInstance() {
        return new LoginFragment();
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_login, container, false);
        mUsername = (EditText) view.findViewById(R.id.et_username);
        mPassword = (EditText) view.findViewById(R.id.et_password);
        view.findViewById(R.id.btn_login).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                login();
            }
        });
        return view;
    }

    private void login() {
        String username = mUsername.getText().toString();
        String password = mPassword.getText().toString();
        // TODO: 16/5/28 verify username and password
        mPresenter.login(username, password);
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        if (context instanceof OnLoginFragmentListener) {
            mListener = (OnLoginFragmentListener) context;
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mListener = null;
    }

    @Override
    public void onLoginResult(int code, String message) {
        if (mListener != null) {
            mListener.onResult(code == 1);
        }
    }

    @Override
    public boolean isActive() {
        return isAdded();
    }

    @Override
    public void setPresenter(LoginContract.Presenter presenter) {
        mPresenter = presenter;
    }

    public interface OnLoginFragmentListener {
        void onResult(boolean success);
    }

}