I am new at android and i am making a dictionary app with youtube tutorials, android.com, stackoverflow etc. for trainig. Now i have an issue with main drawer. I am gonna try explain with pics.
https://i.stack.imgur.com/J0fdO.jpg
When i start the app, dictionary page opening, it's okey. when i click to bookmark, bookmark page opening it's okey too but when i at bookmark page and clicking dictionary link, the dictionary page doesn't open.
here my codes, i used same codes for bookmark and dictionary page.
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_bookmark){
String activeFragment = getSupportFragmentManager().findFragmentById(R.id.fragment_container).getClass().getSimpleName();
if (!activeFragment.equals(BookmarkFragment.class.getSimpleName())){
goToFragment(bookmarkFragment, false);
}
}
if (id == R.id.nav_dict){
String activeFragment = getSupportFragmentManager().findFragmentById(R.id.fragment_container).getClass().getSimpleName();
if (!activeFragment.equals(BookmarkFragment.class.getSimpleName())){
goToFragment(dictionaryFragment, false);
}
}
DrawerLayout drawer = findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
but i think (it's just a guess, i am not sure) the problem is this codes
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
my all MainActivity.java is here
package com.example.dict;
import android.annotation.TargetApi;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.view.WindowManager;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import com.google.android.material.snackbar.Snackbar;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.View;
import androidx.annotation.RequiresApi;
import androidx.core.view.GravityCompat;
import androidx.appcompat.app.ActionBarDrawerToggle;
import android.view.MenuItem;
import com.google.android.material.navigation.NavigationView;
import androidx.drawerlayout.widget.DrawerLayout;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.fragment.app.Fragment;
import androidx.fragment.app.FragmentManager;
import androidx.fragment.app.FragmentTransaction;
import android.view.Menu;
import android.widget.EditText;
import android.widget.Toast;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
MenuItem menuSetting;
Toolbar toolbar;
DBHelper dbHelper;
DictionaryFragment dictionaryFragment;
BookmarkFragment bookmarkFragment;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
dbHelper = new DBHelper(this);
DrawerLayout drawer = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
navigationView.setNavigationItemSelectedListener(this);
dictionaryFragment = new DictionaryFragment();
bookmarkFragment = BookmarkFragment.getInstance(dbHelper);
goToFragment(dictionaryFragment, true);
dictionaryFragment.setOnFragmentListener(new FragmentListener() {
@Override
public void onItemClick(String value) {
String id = Global.getState(MainActivity.this,"dict_type");
int dicType = id == null? R.id.eng_kh:Integer.valueOf(id);
goToFragment(DetailFragment.getNewInstance(value, dbHelper, dicType), false);
}
});
bookmarkFragment.setOnFragmentListener(new FragmentListener() {
@Override
public void onItemClick(String value) {
String id = Global.getState(MainActivity.this,"dict_type");
int dicType = id == null? R.id.eng_kh:Integer.valueOf(id);
goToFragment(DetailFragment.getNewInstance(value, dbHelper, dicType), false);
}
});
EditText edit_search = findViewById(R.id.edit_search);
edit_search.addTextChangedListener(new TextWatcher() {
@Override
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
}
@Override
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {
dictionaryFragment.filterValue(charSequence.toString());
}
@Override
public void afterTextChanged(Editable editable) {
}
});
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN);
}
@Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
menuSetting = menu.findItem(R.id.action_settings);
String id = Global.getState(this,"dict_type");
if (id != null)
onOptionsItemSelected(menu.findItem(Integer.valueOf(id)));
else {
ArrayList<String> source =dbHelper.getWord(R.id.eng_kh);
dictionaryFragment.resetDatasource(source);
}
return true;
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@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.eng_kh) {
Global.saveState(this, "dict_type", String.valueOf(id));
ArrayList<String> source = dbHelper.getWord(id);
dictionaryFragment.resetDatasource(source);
menuSetting.setIcon(getDrawable(R.drawable.ic_lang));
return true;
} else if (id==R.id.kh_eng){
Global.saveState(this, "dict_type", String.valueOf(id));
ArrayList<String> source = dbHelper.getWord(id);
dictionaryFragment.resetDatasource(source);
menuSetting.setIcon(getDrawable(R.drawable.ic_lang2));
return true;
} else if (id==R.id.kh_kh){
Global.saveState(this, "dict_type", String.valueOf(id));
ArrayList<String> source = dbHelper.getWord(id);
dictionaryFragment.resetDatasource(source);
menuSetting.setIcon(getDrawable(R.drawable.ic_lang3));
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_bookmark){
String activeFragment = getSupportFragmentManager().findFragmentById(R.id.fragment_container).getClass().getSimpleName();
if (!activeFragment.equals(BookmarkFragment.class.getSimpleName())){
goToFragment(bookmarkFragment, false);
}
}
if (id == R.id.nav_dict){
String activeFragment = getSupportFragmentManager().findFragmentById(R.id.fragment_container).getClass().getSimpleName();
if (!activeFragment.equals(BookmarkFragment.class.getSimpleName())){
goToFragment(dictionaryFragment, false);
}
}
DrawerLayout drawer = findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
void goToFragment(Fragment fragment, boolean isTop){
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.fragment_container, fragment);
if (!isTop)
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
}
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
String activeFragment = getSupportFragmentManager().findFragmentById(R.id.fragment_container).getClass().getSimpleName();
if (activeFragment.equals(BookmarkFragment.class.getSimpleName())){
menuSetting.setVisible(false);
toolbar.findViewById(R.id.edit_search).setVisibility(View.GONE);
toolbar.setTitle("Bookmark");
}else {
menuSetting.setVisible(true);
toolbar.findViewById(R.id.edit_search).setVisibility(View.VISIBLE);
toolbar.setTitle("");
}
return true;
}
}
and my activity_main_drawer is here
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
tools:showIn="navigation_view">
<item android:title="Network">
<menu>
<item
android:id="@+id/nav_dict"
android:icon="@drawable/ic_dict"
android:title="Dictionary"/>
<item
android:id="@+id/nav_bookmark"
android:icon="@drawable/ic_bookmark"
android:title="@string/menu_bookmark" />
<item
android:id="@+id/nav_rate"
android:icon="@drawable/ic_thumb"
android:title="@string/menu_rate" />
<item
android:id="@+id/nav_share"
android:icon="@drawable/ic_menu_share"
android:title="@string/menu_share" />
</menu>
</item>
<item android:title="Other">
<menu>
<item
android:id="@+id/nav_help"
android:icon="@drawable/ic_help"
android:title="@string/menu_help" />
<item
android:id="@+id/nav_about"
android:icon="@drawable/ic_info"
android:title="@string/menu_about" />
</menu>
</item>
</menu>
if you need any more code, i can paste here. Thanks.
