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//Mainiferst
<activity
android:name=".LoginActivity"
android:exported="true">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".FirstViewActivity"
android:exported="true" />
<activity
android:name=".MainActivity"
android:exported="true"
android:theme="@style/Theme.Home">
</activity>
//
public class FirstViewActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first_view);
EditText nameStudio = findViewById(R.id.txtNameStudio);
Button btnSaveNameStudio = findViewById(R.id.btnSaveNameStudio);
SharedPreferences sharedPrefs = getSharedPreferences("Pref", Context.MODE_PRIVATE);
btnSaveNameStudio.setOnClickListener(view -> {
String name = nameStudio.getText().toString().trim();
if (!name.isEmpty()) {
// Lưu tên vào SharedPreferences và đánh dấu đã nhập tên
SharedPreferences.Editor editor = sharedPrefs.edit();
editor.putString("nameStudio", name);
editor.putInt("checkName", 1);
editor.apply();
// Chuyển đến màn hình trang chủ
Intent intent = new Intent(this, LoginActivity.class);
startActivity(intent);
finish();
}
});
}
}
//HomeFragment
//NotificationFragment
public class LoginActivity extends AppCompatActivity {
Context context;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_login);
EditText pass = findViewById(R.id.etxtPassword);
TextView error = findViewById(R.id.txtErrorPass);
Button btn = findViewById(R.id.button);
TextView txt = findViewById(R.id.txthello);
SharedPreferences sharedPrefs = getSharedPreferences("Pref", Context.MODE_PRIVATE);
int check = sharedPrefs.getInt("checkName", 0);
if (check == 0) {
// Chưa nhập tên, chuyển đến màn hình nhập tên
Intent intent = new Intent(this, FirstViewActivity.class);
startActivity(intent);
finish();
} else {
String hello = "hello " + sharedPrefs.getString("nameStudio", "");
txt.setText(hello);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String password = pass.getText().toString().trim();
if(password.equals("123")){
Intent intent1 = new Intent(getApplicationContext(), MainActivity.class);
startActivity(intent1);
finish();
}else{
error.setVisibility(View.VISIBLE);
error.setText("Sai mật khẩu. Vui lòng thử lại.");
}
}
});
pass.setOnKeyListener(new View.OnKeyListener() {
@Override
public boolean onKey(View view, int i, KeyEvent keyEvent) {
error.setVisibility(View.GONE);
return false;
}
});
}
}
}
//
public class MainActivity extends AppCompatActivity {
private BottomNavigationView bottomNavigationView;
boolean isDarkModeEnabled;
@Override
protected void onCreate(Bundle savedInstanceState) {
SharedPreferences sharedPreferences = getSharedPreferences("Dark_Mode", Context.MODE_PRIVATE);
isDarkModeEnabled= sharedPreferences.getBoolean("isDarkModeEnabled", false);
// Áp dụng trạng thái chế độ tối/sáng
if (isDarkModeEnabled) {
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
} else {
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
}
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bottomNavigationView = findViewById(R.id.bottomNavigationView);
bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.menu_home:
loadFragment(new HomeFragment());
return true;
case R.id.menu_notifications:
loadFragment(new NotificationFragment());
return true;
}
return false;
}
});
// Mặc định, hiển thị HomeFragment khi ứng dụng khởi động
if (savedInstanceState == null) {
loadFragment(new HomeFragment());
}
}
private void loadFragment(Fragment fragment) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.fragment_container, fragment);
transaction.commit();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.options_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
switch (id) {
case R.id.action_dark_mode:
// Đảo ngược trạng thái chế độ tối
isDarkModeEnabled = !isDarkModeEnabled;
// Áp dụng trạng thái chế độ tối
if (isDarkModeEnabled) {
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
} else {
AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
}
saveDarkModeState(isDarkModeEnabled);
// Khởi động lại Activity để áp dụng chế độ tối/sáng
recreate();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private void saveDarkModeState(boolean isDarkModeEnabled) {
SharedPreferences sharedPreferences = getSharedPreferences("Dark_Mode", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putBoolean("isDarkModeEnabled", isDarkModeEnabled);
editor.apply();
}
}
//main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
style="@style/screen">
<FrameLayout
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@+id/bottomNavigationView" />
<com.google.android.material.bottomnavigation.BottomNavigationView
android:id="@+id/bottomNavigationView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
app:menu="@menu/bottom_navigation_menu"
app:labelVisibilityMode="labeled"
android:background="@color/material_on_surface_stroke"/>
</RelativeLayout>
//menu/bottom_navigation_menu
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:iconTint="@color/design_default_color_background"
android:id="@+id/menu_home"
android:icon="@drawable/ic_home"
android:title="Nhà" />
<item
android:id="@+id/menu_notifications"
android:icon="@drawable/ic_notification"
android:title="Thông báo" />
</menu>
//menu/_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/action_dark_mode"
android:title="dark"
android:icon="@drawable/ic_dark"
app:showAsAction="always"/>
</menu>
//color.xml
<color name="xanhss">#2085FE</color>
<color name="dark">#212121</color>
//themes
<resources xmlns:tools="http://schemas.android.com/tools">
<!-- Base application theme. -->
<style name="Theme.Home" parent="Theme.MaterialComponents.Light">
<!-- Primary brand color. -->
<item name="colorPrimary">@color/xanhss</item>
<item name="colorPrimaryVariant">@color/purple_700</item>
<item name="colorOnPrimary">@color/white</item>
<!-- Secondary brand color. -->
<item name="colorSecondary">@color/teal_200</item>
<item name="colorSecondaryVariant">@color/teal_700</item>
<item name="colorOnSecondary">@color/black</item>
<!-- Status bar color. -->
<item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
<!-- Customize your theme here. -->
</style>
<style name="screen">
<item name="android:background">@color/white</item>
</style>
</resources>
//homefragment.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".HomeFragment"
style="@style/screen">
<!-- TODO: Update blank fragment layout -->
<EditText
android:id="@+id/txtDen"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="hello_blank_fragment_home"
android:layout_marginTop="50dp"
android:layout_marginBottom="0dp"
android:padding="16dp"
android:layout_marginHorizontal="20dp"/>
<Button
android:id="@+id/btnSend"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|center"
android:layout_marginBottom="550dp"
android:text="send"/>
</FrameLayout>
//homefragment
public class HomeFragment extends Fragment {
private EditText editText;
private Button button;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
// Inflate layout for this fragment
View view = inflater.inflate(R.layout.fragment_home, container, false);
// Initialize views
editText = view.findViewById(R.id.txtDen);
button = view.findViewById(R.id.btnSend);
FirebaseApp.initializeApp(getContext());
// Lấy tham chiếu đến Firebase Realtime Database
FirebaseDatabase database = FirebaseDatabase.getInstance();
DatabaseReference myRef = database.getReference("DEN");
// Set click listener for the button
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// Get the text from EditText
String content = editText.getText().toString().trim();
if (!content.isEmpty()) {
// Send the content to Firebase or perform any other action
// You can add your Firebase logic here
myRef.setValue(content);
// Clear the EditText
editText.setText("");
// Show a toast message
Toast.makeText(getActivity(), "Content sent to Firebase", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(getActivity(), "Please enter content before sending", Toast.LENGTH_SHORT).show();
}
}
});
return view;
}
}