我在android中创建了一个导航视图。我在菜单文件夹下的draweritems下添加了项目。每当我点击一个menuitem之前出现一个toast，但现在它没有响应.Below是代码。请帮助我...
draweritems.xml：
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<group android:checkableBehavior="single">
<item
android:id="@+id/motel"
android:title="Motel"
android:icon="@drawable/motel"
>
</item>
<item
android:id="@+id/packages"
android:title="Packages"
android:icon="@drawable/packages">
</item>
<item
android:id="@+id/ayurveda"
android:title="Ayurveda"
android:icon="@drawable/ayurveda">
</item>
<item
android:id="@+id/marketing"
android:title="Marketing"
android:icon="@drawable/marketing">
</item>
<item
android:id="@+id/Tours"
android:title="ConductedTours"
android:icon="@drawable/tours">
</item>
<item
android:id="@+id/Locate"
android:title="Locate"
android:icon="@drawable/locate">
</item>
<item
android:id="@+id/News"
android:title="News"
android:icon="@drawable/news">
</item>
<item
android:id="@+id/Login"
android:title="Login"
android:icon="@drawable/login">
</item>
</group>
</menu>
MainActivity.java：
import android.content.Context;
import android.os.Bundle;
import android.support.design.widget.NavigationView;
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.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
private Context context=this;
private NavigationView navigationView;
private DrawerLayout drawerLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar=(Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
navigationView=(NavigationView) findViewById(R.id.navigation_view);
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
@Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
Log.i("Clicked", "Clicked motel");
if (menuItem.isChecked()) {
menuItem.setChecked(false);
} else menuItem.setChecked(true);
drawerLayout.closeDrawers();
switch (menuItem.getItemId()) {
case R.id.motel:
Toast.makeText(getApplicationContext(), "Motels", Toast.LENGTH_LONG).show();
return true;
case R.id.packages:
Toast.makeText(getApplicationContext(), "Packages", Toast.LENGTH_LONG).show();
return true;
case R.id.ayurveda:
Toast.makeText(getApplicationContext(), "Ayurveda", Toast.LENGTH_LONG).show();
return true;
}
return true;
}
});
drawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.openDrawer, R.string.closeDrawer){
@Override
public void onDrawerClosed(View drawerView) {
// Code here will be triggered once the drawer closes as we dont want anything to happen so we leave this blank
super.onDrawerClosed(drawerView);
}
@Override
public void onDrawerOpened(View drawerView) {
// Code here will be triggered once the drawer open as we dont want anything to happen so we leave this blank
super.onDrawerOpened(drawerView);
}
};
//Setting the actionbarToggle to drawer layout
drawerLayout.setDrawerListener(actionBarDrawerToggle);
//calling sync state is necessay or else your hamburger icon wont show up
actionBarDrawerToggle.syncState();
}
@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.
int id = item.getItemId();
if(id==R.id.ayurveda){
Toast.makeText(getApplicationContext(),"Clicked Ayurveda",Toast.LENGTH_LONG).show();
return true;
}
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
main.xml中：
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/drawerLayout"
android:fitsSystemWindows="true"
tools:context=".MainActivity">
<android.support.design.widget.NavigationView
android:id="@+id/navigation_view"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:layout_gravity="start"
app:headerLayout="@layout/header"
app:menu="@menu/draweritems"
app:theme="@style/NavigationViewStyle">
</android.support.design.widget.NavigationView>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/relative"
android:orientation="vertical">
<include
android:id="@+id/toolbar"
layout="@layout/toolbar"/>
</RelativeLayout>
</android.support.v4.widget.DrawerLayout>
styles.xml：
<!-- Base application theme. -->
<!-- Customize your theme here. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
<item name="windowActionBar">false</item>
<item name="windowActionModeOverlay">true</item>
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
</style>
<style name="NavigationViewStyle">
<item name="android:textSize">20sp</item>
<!-- menu item text size-->
<item name="android:listPreferredItemHeightSmall">80dp</item><!-- menu item height-->
</style>
答案 0 :(得分：1)
此代码更改
public class MainActivity extends AppCompatActivity
以下代码
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener
我不确定，但我希望你能成功。