I am making an app that makes use of Navigation Drawer. On running the app, I have error named cannot find symbol class actionbar and toolbar. I am not sure if there is an issue with my Java code or my XML. Please help me to solve this problem.
MainPageActivity.java
public class MainPageActivity extends Activity {
//slider_menu için *******************************************************///////////
private DrawerLayout mDrawerLayout;
/////////////////************************
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mainpage);
///// ********************** toolbar -*************************
mDrawerLayout = findViewById(R.id.drawer_layout);
NavigationView navigationView = findViewById(R.id.nav_view);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
ActionBar actionbar = getSupportActionBar();
actionbar.setDisplayHomeAsUpEnabled(true);
actionbar.setHomeAsUpIndicator(R.drawable.ic_menu);
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
// set item as selected to persist highlight
menuItem.setChecked(true);
// close drawer when item is tapped
mDrawerLayout.closeDrawers();
// Add code here to update the UI based on the item selected
// For example, swap UI fragments here
return true;
}
});
/// **************************** Listen open and close slider menu button ******************************
mDrawerLayout.addDrawerListener(
new DrawerLayout.DrawerListener() {
@Override
public void onDrawerSlide(View drawerView, float slideOffset) {
// Respond when the drawer's position changes
}
@Override
public void onDrawerOpened(View drawerView) {
// Respond when the drawer is opened
}
@Override
public void onDrawerClosed(View drawerView) {
// Respond when the drawer is closed
}
@Override
public void onDrawerStateChanged(int newState) {
// Respond when the drawer motion state changes
}
}
);
//**********************************************////////////////////
ListView list;
final String[] web = {
getString(R.string.mainpage_acil),
getString(R.string.mainpage_bildirim),
getString(R.string.mainpage_isguveligi),
};
Integer[] imageId = {
R.drawable.mainpage_acil_icon_p,
R.drawable.mainpage_bildirim_icon_p,
R.drawable.mainpage_isguvenligi_icon_p,
};
CustomListMainPage adapter = new
CustomListMainPage(MainPageActivity.this, web, imageId);
list = (ListView) findViewById(R.id.list);
list.setAdapter(adapter);
list.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
//Toast.makeText(MainPageActivity.this, "You Clicked at " + web[+position], Toast.LENGTH_SHORT).show();
Log.v("Pozisyon", String.valueOf(position));
Intent intentPos;
ImageView imageView= (ImageView) view.findViewById(R.id.img);
boolean flag=false;
/// Renk değiştirme buraya tekrar bak***************
switch (position) {
case 0 :
//Toast.makeText(MainPageActivity.this, "You Clicked at " + web[+position], Toast.LENGTH_SHORT).show();
imageView.setImageResource(R.drawable.mainpage_acil_icon_p);
intentPos=new Intent(MainPageActivity.this,EmergencyActivity.class);
startActivity(intentPos);
break;
case 1 :
imageView.setImageResource(R.drawable.mainpage_bildirim_icon_p);
intentPos=new Intent(MainPageActivity.this,NotificationPage.class);
startActivity(intentPos); break;
case 2 :
imageView.setImageResource(R.drawable.mainpage_isguvenligi_icon_p);
intentPos=new Intent(MainPageActivity.this,JobSecurityActivity.class);
startActivity(intentPos);
break;
default :
System.out.println("Hatali secim! 1, 2 ya da 3'e basiniz.");
break;
}
}
});
}
//slider_menu buton ayarları için *******************************************************///////////
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
mDrawerLayout.openDrawer(GravityCompat.START);
return true;
}
return super.onOptionsItemSelected(item);
}
//slider_menu buton ayarları için
*******************************************************///////////
}
}
activity_mainpage.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Use DrawerLayout as root container for activity -->
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:menu="@menu/menu_main"
app:headerLayout="@layout/nav_header"
android:orientation="vertical"
android:background="#000000">
!-- Layout to contain contents of main body of screen (drawer will slide over this) -->
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<!-- Toolbar için ***********************************************-->
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:theme="@style/ThemeOverlay.AppCompat.ActionBar" />
<!-- Toolbar için *****************************************-->
<!-- Container for contents of drawer - use NavigationView to make configuration easier -->
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true" />
</FrameLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="60"
android:alpha=".85"
android:background="@drawable/mainpage_background"
android:layout_marginBottom="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:layout_weight="40"
android:orientation="vertical">
<TextView
android:id="@+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="EMAS"
android:textAlignment="center"
android:textColor="@color/colorWhite"
android:textSize="18sp"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dip"
android:orientation="vertical"
android:layout_weight="20">
<include layout="@layout/mainpage_inner_part" />
</LinearLayout>
</LinearLayout>
</android.support.v4.widget.DrawerLayout>
I am not sure if there is an issue with my Java code or my XML. Please help me to solve this problem.
check in your android manifest file in application tag in style in given like below .. check this line in android manifest file ..
change this
public class MainPageActivity extends AppCompatActivity
android:theme="@style/AppTheme"
then after apply below style.
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>