Sto tentando di visualizzare il cassetto di navigazione nella barra degli strumenti. Come penso di aver già scritto tutto ciò di cui ha bisogno, ma nulla viene visualizzato nella barra degli strumenti. Solo testo Zoo. Non icona per display navbarCassetto di navigazione DrawerLayout non visualizzato
Sono nuovo su Android e non mi sorprenderà se mi manca qualcosa.
Ecco la mia MainActivity.java
package com.example.zoo;
import android.content.res.Configuration;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
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.View;
import android.view.Menu;
import android.view.MenuItem;
public class MainActivity extends AppCompatActivity {
private DrawerLayout mDrawerLayout;
private ActionBarDrawerToggle mActionBarDrawerToggle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setHomeButtonEnabled(true);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_Layout);
mActionBarDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout, R.string.drawer_opened, R.string.drawer_closed){
@Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
if (getSupportActionBar() != null) {
getSupportActionBar().setTitle(R.string.drawer_opened);
}
}
@Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
if (getSupportActionBar() != null) {
getSupportActionBar().setTitle(R.string.drawer_closed);
}
}
};
mDrawerLayout.setDrawerListener(mActionBarDrawerToggle);
}
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
mActionBarDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
mActionBarDrawerToggle.onConfigurationChanged(newConfig);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, 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.
if(mActionBarDrawerToggle.onOptionsItemSelected(item))
return true;
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
Ecco la mia content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
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="com.example.gsiradze.zoo.MainActivity"
android:orientation="vertical">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:background="?attr/colorPrimary"
android:minHeight="?android:attr/actionBarSize"/>
<android.support.v4.widget.DrawerLayout
android:id="@+id/drawer_Layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/hello_world" />
<ListView
android:id="@+id/drawer"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="@android:color/white"/>
</android.support.v4.widget.DrawerLayout>
</LinearLayout>
e, naturalmente, ho questi nomi di stringa
<resources>
<string name="drawer_opened">Select an item</string>
<string name="drawer_closed">Zoo</string>
</resources>
Dove hai scritto per aprire il cassetto di navigazione? –
@MikeM. puoi postare come risposta. grazie compagno – gsiradze
@ MikeM. in realtà entrambi sono corretti. Grazie – gsiradze