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HomeActivity.java（導航活動）如何在導航活動的導航抽屜中寫入用戶名從其片段之一？
import android.app.Fragment;
import android.app.FragmentManager;
mport android.app.FragmentTransaction;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;
import com.example.dellpc.reuz_app.DTO.User;
import com.example.dellpc.reuz_app.Fragments.BrowseAdFragment;
import com.example.dellpc.reuz_app.Fragments.LoginFragment;
import com.example.dellpc.reuz_app.Fragments.NetworkErrorFragment;
import com.example.dellpc.reuz_app.Fragments.TopMainFragment;
import com.example.dellpc.reuz_app.R;
import com.example.dellpc.reuz_app.utils.CheckNetworkConnection;
import com.example.dellpc.reuz_app.utils.NetworkErrorFragmentSetter;
public class HomeActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
private Fragment fragment;
private String title;
private DrawerLayout drawer;
private NavigationView navigationView;
private View layout;
private User user=null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setTitle("REUZ");
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
navigationView.bringToFront();
System.out.println(getSupportActionBar().getHeight());
View headerLayout = navigationView.getHeaderView(0);
layout=headerLayout.findViewById(R.id.navigationHeader);
getSupportActionBar().setTitle("REUZ");
this.setInitialFragment();
this.listeners();
/*this.getUserObject();*/
}
public void listeners(){
layout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if(CheckNetworkConnection.isConnectionAvailable(HomeActivity.this))
{
getLoginFragment();
}
else{
fragment= NetworkErrorFragmentSetter.getNetworkErrorFragment(HomeActivity.this);
replaceFragment();
}
}
});
getFragmentManager().addOnBackStackChangedListener(new FragmentManager.OnBackStackChangedListener() {
@Override
public void onBackStackChanged() {
Fragment currentFragment = getFragmentManager().findFragmentById(R.id.content_frame);
if (currentFragment instanceof TopMainFragment) {
getSupportActionBar().setTitle("REUZ");
}
else if (currentFragment instanceof BrowseAdFragment) {
getSupportActionBar().setTitle("All Categories");
}
else if (currentFragment instanceof LoginFragment) {
getSupportActionBar().setTitle("LOGIN");
}
else if(currentFragment instanceof NetworkErrorFragment){
getSupportActionBar().setTitle("NETWORK ERROR");
}
}
});
}
@Override
public void onBackPressed() {
//drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.home, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_home) {
// Handle the home action
setInitialFragment();
} else if (id == R.id.nav_browse) {
fragment=new BrowseAdFragment();
} else if (id == R.id.nav_submitAd) {
Intent intent=new Intent(getApplicationContext(),SubmitAdActivity.class);
startActivity(intent);
} else if (id == R.id.nav_help) {
} else if (id == R.id.nav_my_ads) {
} else if (id == R.id.nav_wishList) {
}
replaceFragment();
//drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
//drawer.closeDrawer(GravityCompat.START);
return true;
}
public void setTitleOnActionBar(String title) {
getSupportActionBar().setTitle(title);
}
public void setInitialFragment(){
fragment=new TopMainFragment();
FragmentTransaction ft=getFragmentManager().beginTransaction();
ft.replace(R.id.content_frame, fragment);
// ft.addToBackStack(null);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
drawer.closeDrawer(GravityCompat.START);
}
public void getLoginFragment(){
fragment=new LoginFragment();
FragmentTransaction ft=getFragmentManager().beginTransaction();
ft.replace(R.id.content_frame, fragment);
ft.addToBackStack(null);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
drawer.closeDrawer(GravityCompat.START);
}
public void replaceFragment(){
FragmentTransaction ft=getFragmentManager().beginTransaction();
ft.replace(R.id.content_frame, fragment);
ft.addToBackStack(null);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit();
drawer.closeDrawer(GravityCompat.START);
}
@Override
public void onResume() {
super.onResume();
// Set the title
}
public void getUserObject(User user){
this.user=user;
if(user!=null){
changeLayoutName();
}
}
public void changeLayoutName(){
TextView name= (TextView)layout.findViewById(R.id.textView8);
name.setText(user.getName());
}
}
LoginFragment.java（片段）
import android.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
import android.support.v7.widget.Toolbar;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.example.dellpc.reuz_app.Activities.HomeActivity;
import com.example.dellpc.reuz_app.Activities.RegisterActivity;
import com.example.dellpc.reuz_app.Activities.UnableToLoginActivity;
import com.example.dellpc.reuz_app.DTO.User;
import com.example.dellpc.reuz_app.R;
import com.example.dellpc.reuz_app.Validator.IValidation;
import com.example.dellpc.reuz_app.Validator.Validation;
import com.example.dellpc.reuz_app.dao.IUserDAO;
import com.example.dellpc.reuz_app.dao.UserDAO;
public class LoginFragment extends Fragment {
private EditText emailET, passwordET;
private Button loginBTN;
private TextView utlTV, registerTV, invalidEmailTV, invalidPasswordTV;
private View view;
private NavigationView navigationView;
private User user;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// keep the fragment and all its data across screen rotation
setRetainInstance(true);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
view = inflater.inflate(R.layout.fragment_login, container, false);
Toolbar toolbar = (Toolbar)view.findViewById(R.id.toolbar);
((HomeActivity)getActivity()).getSupportActionBar().setTitle("LOGIN");
this.mapping();
this.listeners(view);
return view;
}
public void mapping(){
emailET = (EditText)view.findViewById(R.id.emailET);
passwordET = (EditText)view.findViewById(R.id.passwordET);
loginBTN = (Button)view.findViewById(R.id.loginBTN);
utlTV = (TextView)view.findViewById(R.id.utlTV);
invalidEmailTV = (TextView)view.findViewById(R.id.invalidEmailTV);
invalidPasswordTV = (TextView)view.findViewById(R.id.invalidPasswordTV);
registerTV = (TextView)view.findViewById(R.id.registerTV);
}
public void listeners(View view){
loginBTN.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String email = emailET.getText().toString();
String password = passwordET.getText().toString();
validateAndMoveToActivity(email, password);
}
});
utlTV.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent utlIntent = new Intent(getActivity(), UnableToLoginActivity.class);
startActivity(utlIntent);
}
});
registerTV.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent registerIntent = new Intent(getActivity(), RegisterActivity.class);
startActivity(registerIntent);
}
});
emailET.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s) {
invalidEmailTV.setText("");
invalidPasswordTV.setText("");
}
});
passwordET.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
@Override
public void afterTextChanged(Editable s)
{
invalidEmailTV.setText("");
invalidPasswordTV.setText("");
}
});
}
public void validateAndMoveToActivity(String email, String password){
IValidation iValidation = new Validation();
if(!iValidation.isFilled(email) && iValidation.isFilled(password)){
invalidEmailTV.setText("This field is required");
}
else if(iValidation.isFilled(email) && !iValidation.isFilled(password)) {
invalidPasswordTV.setText("This field is required");
}
else if(!iValidation.isFilled(email) && !iValidation.isFilled(password)){
invalidEmailTV.setText("This field is required");
invalidPasswordTV.setText("This field is required");
}
else
{
IUserDAO iUserDAO = new UserDAO(getActivity().getApplicationContext());
/*
if(iUserDAO.isEmailPasswordExist(email, password))*/
if(iUserDAO.isEmailExist(email)){
user=iUserDAO.isEmailPasswordExist(email,password);
if(user!=null)
{
Toast.makeText(view.getContext(), "Successful Login", Toast.LENGTH_SHORT).show();
HomeActivity home=new HomeActivity();
home.getUserObject(user);
/* Intent homeACIntent = new Intent(view.getContext(), HomeActivity.class);
homeACIntent.putExtra("user",user);
startActivity(homeACIntent);*/
// Remove this fragment.
getActivity().getFragmentManager().popBackStack();
}
else {
invalidPasswordTV.setText("Invalid email or password");
}
}
else {
// After successful login where do you want to move your activity.
invalidEmailTV.setText("Invalid phone number or email");
}
}
}
@Override
public void onSaveInstanceState(Bundle state) {
super.onSaveInstanceState(state);
state.putSerializable("user",user);
}
}
HomeActivity包含兩個Fragments-登錄和頂級 最初，它顯示了頂部片段 登錄片段有一個選項註冊 成功註冊後，用戶導航到登錄片段 現在登錄後，控件必須到達「頂部」，並且用戶的名稱必須寫入導航D rawer 怎麼辦？
這是我的抽屜.T想寫用戶的歡迎，而不是名稱來Reuz
感謝我得到它，現在它的工作.... – Johny