没有 3 行图标的抽屉布局
draywerLayout whith no icon with 3 line
我 post 这个问题是因为我在我的代码中放入了一个 DrawerLayout 并且当我在我的 phone 上播放我的应用程序时，DrawerLayout 的图标（3 行）没有出现。
这是我的 java 代码：MainActivity.java
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private List<Challenge> challenges;
private ChallengeAdapter monAdapteur;
private static Context context;
DrawerLayout drawerLayout;
ActionBarDrawerToggle actionBarDrawerToggle;
NavigationView navigationView;
public static Context getAppContext() {
return MainActivity.context;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
MainActivity.context = getApplicationContext();
setContentView(R.layout.activity_main);
setUpToolbar();
navigationView = (NavigationView) findViewById(R.id.navigation_menu);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
switch (menuItem.getItemId())
{
case R.id.nav_home:
Log.d("Bonjour","CAVA");
break;
}
return false;
}
});
recyclerView = findViewById(R.id.myRecyclerView);
challenges = new ArrayList<>();
List<ImageDessin> imageDessins = new ArrayList<>();
ImageDessin imageDessinTourEiffel = new ImageDessin();
imageDessinTourEiffel.imageUrl = "https://www.infinityandroid.com/images/france_eiffel_tower.jpg";
imageDessinTourEiffel.auteur = "France";
imageDessinTourEiffel.dateSoumission = "Eiffel Tower";
imageDessinTourEiffel.startRating = 48;
imageDessins.add(imageDessinTourEiffel);
ImageDessin imageDessinMoutainView = new ImageDessin();
imageDessinMoutainView.imageUrl = "https://www.infinityandroid.com/images/indonesia_mountain_view.jpg";
imageDessinMoutainView.auteur = "Indonesia";
imageDessinMoutainView.dateSoumission = "Mountain View";
imageDessinMoutainView.startRating = 45;
imageDessins.add(imageDessinMoutainView);
ImageDessin imageDessinTajMahal = new ImageDessin();
imageDessinTajMahal.imageUrl = "https://www.infinityandroid.com/images/india_taj_mahal.jpg";
imageDessinTajMahal.auteur = "India";
imageDessinTajMahal.dateSoumission = "Taj Mahal";
imageDessinTajMahal.startRating = 43;
imageDessins.add(imageDessinTajMahal);
ImageDessin imageDessinLakeView = new ImageDessin();
imageDessinLakeView.imageUrl = "https://www.infinityandroid.com/images/canada_lake_view.jpg";
imageDessinLakeView.auteur = "Canada";
imageDessinLakeView.dateSoumission = "Lake View";
imageDessinLakeView.startRating = 10 ;
imageDessins.add(imageDessinLakeView);
ImageDessin imageDessinTest = new ImageDessin();
imageDessinTest.imageUrl = "https://images-na.ssl-images-amazon.com/images/I/71wvedvViFL._AC_SY679_.jpg";
imageDessinTest.auteur = "Tom99";
imageDessinTest.dateSoumission = "8/11/2020 à 18h12";
imageDessinTest.startRating = 42;
imageDessins.add(imageDessinTest);
ImageDessin imageDessinTestAnime = new ImageDessin();
imageDessinTestAnime.imageUrl = "https://wallpapercave.com/wp/wp4443741.jpg";
imageDessinTestAnime.auteur = "Paysage";
imageDessinTestAnime.dateSoumission = "Landscape";
imageDessinTestAnime.startRating = 45;
imageDessins.add(imageDessinTestAnime);
List<ImageDessin> test = new ArrayList<>();
ImageDessin imageDessinAnime = new ImageDessin();
imageDessinAnime.imageUrl = "https://static.wikia.nocookie.net/dr-stone/images/3/34/Senku_Ishigami_Anime_Infobox.png/revision/latest?cb=20190710063915";
imageDessinAnime.auteur = "Tom99";
imageDessinAnime.dateSoumission = "8/11/2020 à 18h10";
imageDessinAnime.startRating = 450;
test.add(imageDessinAnime);
Challenge challenge1 = new Challenge("Test",imageDessins);
Challenge challenge2 = new Challenge("Ishigami Senku",test);
challenges.add(challenge1);
challenges.add(challenge2);
monAdapteur = new ChallengeAdapter(challenges);
recyclerView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));
recyclerView.setAdapter(monAdapteur);
monAdapteur.setOnItemClickListener(position -> {
Challenge user = challenges.get(position);
Toast.makeText(getBaseContext(),
"RecyclerView : Challenge Title : "+user.getTitre(),
Toast.LENGTH_SHORT).show();
});
}
public void setUpToolbar() {
drawerLayout = findViewById(R.id.drawerLayout);
//Toolbar toolbar = findViewById(R.id.toolbar);
//setSupportActionBar(toolbar);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.app_name, R.string.app_name);
actionBarDrawerToggle.setDrawerIndicatorEnabled(true);
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.getDrawerArrowDrawable().setColor(getResources().getColor(R.color.black));
actionBarDrawerToggle.syncState();
}
这是我的 XML 代码：activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:id="@+id/drawerLayout"
tools:context=".MainActivity"
>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@color/white">
<!-- <androidx.appcompat.widget.Toolbar-->
<!-- android:id="@+id/toolbar"-->
<!-- android:layout_width="match_parent"-->
<!-- android:layout_height="wrap_content"-->
<!-- android:background="#F7FFFFFF"-->
<!-- app:subtitleTextColor="#0A0A0A"-->
<!-- app:titleTextColor="#111111"-->
<!-- app:layout_constraintTop_toTopOf="parent"/>-->
<TextView
android:id="@+id/textListeChallengeEnCours"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginTop="20dp"
android:layout_marginEnd="20dp"
android:text="@string/challengeEnCours"
android:textColor="#212121"
android:textSize="35sp"
android:textStyle="bold"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/myRecyclerView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginBottom="20dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toBottomOf="@id/textListeChallengeEnCours"
/>
</androidx.constraintlayout.widget.ConstraintLayout>
<com.google.android.material.navigation.NavigationView
android:id="@+id/navigation_menu"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/header"
app:menu="@menu/drawer_menu">
</com.google.android.material.navigation.NavigationView>
</androidx.drawerlayout.widget.DrawerLayout>
尝试
- 放入 MainActivity.java ：
actionBarDrawerToggle.setHomeAsUpIndicator(R.drawable.ic_baseline_dehaze_24); -> 什么也没做actionBarDrawerToggle.setDrawerIndicatorEnabled(true); -> 什么也没做- 取消注释
//Toolbar toolbar = findViewById(R.id.toolbar); //setSupportActionBar(toolbar); 以获得新的工具栏 -> 错误，不会构建 gradle
好的，你需要在你的代码中添加这个
public void setUpToolbar() {
drawerLayout = findViewById(R.id.drawerLayout);
//Toolbar toolbar = findViewById(R.id.toolbar);
//setSupportActionBar(toolbar);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.app_name, R.string.app_name);
actionBarDrawerToggle.setDrawerIndicatorEnabled(true);
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.getDrawerArrowDrawable().setColor(getResources().getColor(R.color.black));
actionBarDrawerToggle.syncState();
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeAsUpIndicator(R.drawable.ic_baseline_dehaze_24);
}
您忘记实现 onOptionsItemSelected
这就是奇迹发生的地方：
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Pass the event to ActionBarDrawerToggle, if it returns
// true, then it has handled the app icon touch event
if (actionBarDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle your other action bar items...
return super.onOptionsItemSelected(item);
}
}
我 post 这个问题是因为我在我的代码中放入了一个 DrawerLayout 并且当我在我的 phone 上播放我的应用程序时，DrawerLayout 的图标（3 行）没有出现。
这是我的 java 代码：MainActivity.java
public class MainActivity extends AppCompatActivity {
private RecyclerView recyclerView;
private List<Challenge> challenges;
private ChallengeAdapter monAdapteur;
private static Context context;
DrawerLayout drawerLayout;
ActionBarDrawerToggle actionBarDrawerToggle;
NavigationView navigationView;
public static Context getAppContext() {
return MainActivity.context;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
MainActivity.context = getApplicationContext();
setContentView(R.layout.activity_main);
setUpToolbar();
navigationView = (NavigationView) findViewById(R.id.navigation_menu);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem menuItem) {
switch (menuItem.getItemId())
{
case R.id.nav_home:
Log.d("Bonjour","CAVA");
break;
}
return false;
}
});
recyclerView = findViewById(R.id.myRecyclerView);
challenges = new ArrayList<>();
List<ImageDessin> imageDessins = new ArrayList<>();
ImageDessin imageDessinTourEiffel = new ImageDessin();
imageDessinTourEiffel.imageUrl = "https://www.infinityandroid.com/images/france_eiffel_tower.jpg";
imageDessinTourEiffel.auteur = "France";
imageDessinTourEiffel.dateSoumission = "Eiffel Tower";
imageDessinTourEiffel.startRating = 48;
imageDessins.add(imageDessinTourEiffel);
ImageDessin imageDessinMoutainView = new ImageDessin();
imageDessinMoutainView.imageUrl = "https://www.infinityandroid.com/images/indonesia_mountain_view.jpg";
imageDessinMoutainView.auteur = "Indonesia";
imageDessinMoutainView.dateSoumission = "Mountain View";
imageDessinMoutainView.startRating = 45;
imageDessins.add(imageDessinMoutainView);
ImageDessin imageDessinTajMahal = new ImageDessin();
imageDessinTajMahal.imageUrl = "https://www.infinityandroid.com/images/india_taj_mahal.jpg";
imageDessinTajMahal.auteur = "India";
imageDessinTajMahal.dateSoumission = "Taj Mahal";
imageDessinTajMahal.startRating = 43;
imageDessins.add(imageDessinTajMahal);
ImageDessin imageDessinLakeView = new ImageDessin();
imageDessinLakeView.imageUrl = "https://www.infinityandroid.com/images/canada_lake_view.jpg";
imageDessinLakeView.auteur = "Canada";
imageDessinLakeView.dateSoumission = "Lake View";
imageDessinLakeView.startRating = 10 ;
imageDessins.add(imageDessinLakeView);
ImageDessin imageDessinTest = new ImageDessin();
imageDessinTest.imageUrl = "https://images-na.ssl-images-amazon.com/images/I/71wvedvViFL._AC_SY679_.jpg";
imageDessinTest.auteur = "Tom99";
imageDessinTest.dateSoumission = "8/11/2020 à 18h12";
imageDessinTest.startRating = 42;
imageDessins.add(imageDessinTest);
ImageDessin imageDessinTestAnime = new ImageDessin();
imageDessinTestAnime.imageUrl = "https://wallpapercave.com/wp/wp4443741.jpg";
imageDessinTestAnime.auteur = "Paysage";
imageDessinTestAnime.dateSoumission = "Landscape";
imageDessinTestAnime.startRating = 45;
imageDessins.add(imageDessinTestAnime);
List<ImageDessin> test = new ArrayList<>();
ImageDessin imageDessinAnime = new ImageDessin();
imageDessinAnime.imageUrl = "https://static.wikia.nocookie.net/dr-stone/images/3/34/Senku_Ishigami_Anime_Infobox.png/revision/latest?cb=20190710063915";
imageDessinAnime.auteur = "Tom99";
imageDessinAnime.dateSoumission = "8/11/2020 à 18h10";
imageDessinAnime.startRating = 450;
test.add(imageDessinAnime);
Challenge challenge1 = new Challenge("Test",imageDessins);
Challenge challenge2 = new Challenge("Ishigami Senku",test);
challenges.add(challenge1);
challenges.add(challenge2);
monAdapteur = new ChallengeAdapter(challenges);
recyclerView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));
recyclerView.setAdapter(monAdapteur);
monAdapteur.setOnItemClickListener(position -> {
Challenge user = challenges.get(position);
Toast.makeText(getBaseContext(),
"RecyclerView : Challenge Title : "+user.getTitre(),
Toast.LENGTH_SHORT).show();
});
}
public void setUpToolbar() {
drawerLayout = findViewById(R.id.drawerLayout);
//Toolbar toolbar = findViewById(R.id.toolbar);
//setSupportActionBar(toolbar);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.app_name, R.string.app_name);
actionBarDrawerToggle.setDrawerIndicatorEnabled(true);
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.getDrawerArrowDrawable().setColor(getResources().getColor(R.color.black));
actionBarDrawerToggle.syncState();
}
这是我的 XML 代码：activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:id="@+id/drawerLayout"
tools:context=".MainActivity"
>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@color/white">
<!-- <androidx.appcompat.widget.Toolbar-->
<!-- android:id="@+id/toolbar"-->
<!-- android:layout_width="match_parent"-->
<!-- android:layout_height="wrap_content"-->
<!-- android:background="#F7FFFFFF"-->
<!-- app:subtitleTextColor="#0A0A0A"-->
<!-- app:titleTextColor="#111111"-->
<!-- app:layout_constraintTop_toTopOf="parent"/>-->
<TextView
android:id="@+id/textListeChallengeEnCours"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginTop="20dp"
android:layout_marginEnd="20dp"
android:text="@string/challengeEnCours"
android:textColor="#212121"
android:textSize="35sp"
android:textStyle="bold"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/myRecyclerView"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginBottom="20dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toBottomOf="@id/textListeChallengeEnCours"
/>
</androidx.constraintlayout.widget.ConstraintLayout>
<com.google.android.material.navigation.NavigationView
android:id="@+id/navigation_menu"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/header"
app:menu="@menu/drawer_menu">
</com.google.android.material.navigation.NavigationView>
</androidx.drawerlayout.widget.DrawerLayout>
尝试
- 放入 MainActivity.java ：
actionBarDrawerToggle.setHomeAsUpIndicator(R.drawable.ic_baseline_dehaze_24);-> 什么也没做actionBarDrawerToggle.setDrawerIndicatorEnabled(true);-> 什么也没做- 取消注释
//Toolbar toolbar = findViewById(R.id.toolbar); //setSupportActionBar(toolbar);以获得新的工具栏 -> 错误，不会构建 gradle
好的，你需要在你的代码中添加这个
public void setUpToolbar() {
drawerLayout = findViewById(R.id.drawerLayout);
//Toolbar toolbar = findViewById(R.id.toolbar);
//setSupportActionBar(toolbar);
actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.app_name, R.string.app_name);
actionBarDrawerToggle.setDrawerIndicatorEnabled(true);
drawerLayout.addDrawerListener(actionBarDrawerToggle);
actionBarDrawerToggle.getDrawerArrowDrawable().setColor(getResources().getColor(R.color.black));
actionBarDrawerToggle.syncState();
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setHomeAsUpIndicator(R.drawable.ic_baseline_dehaze_24);
}
您忘记实现 onOptionsItemSelected
这就是奇迹发生的地方：
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Pass the event to ActionBarDrawerToggle, if it returns
// true, then it has handled the app icon touch event
if (actionBarDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle your other action bar items...
return super.onOptionsItemSelected(item);
}
}