导航抽屉问题(不显示布局预览)

我创建了这个应用程序,我想使用导航抽屉菜单,但当我尝试在导航抽屉xml中编辑时,出现了“等待构建完成…”的问题发生了,我在android studio的左侧看不到布局previw

联系

此处未找到layout\u预览

我试过这个 soultion 解决这个问题,但不幸的是对我不起作用

这是activity\u main\u抽屉。xml

<?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">

    <group android:checkableBehavior="single">
        <item
            android:id="@+id/articles"
            android:icon="@drawable/ic_menu_camera"
            android:title="@string/articles" />
        <item
            android:id="@+id/windows"
            android:icon="@drawable/ic_menu_gallery"
            android:title="@string/windows" />
        <item
            android:id="@+id/linux"
            android:icon="@drawable/ic_menu_slideshow"
            android:title="@string/linux" />
        <item
            android:id="@+id/miscellaneous_devices"
            android:icon="@drawable/ic_menu_manage"
            android:title="@string/miscellaneous_devices" />

        <item
            android:id="@+id/information_security"
            android:icon="@drawable/ic_menu_manage"
            android:title="@string/information_security" />

        <item
            android:id="@+id/facebook"
            android:icon="@drawable/ic_menu_manage"
            android:title="@string/facebook" />
    </group>

    <item android:title="Communicate">
        <menu>
            <item
                android:id="@+id/nav_share"
                android:icon="@drawable/ic_menu_share"
                android:title="Share" />
            <item
                android:id="@+id/nav_send"
                android:icon="@drawable/ic_menu_send"
                android:title="Send" />
        </menu>
    </item>

</menu>

活动\u主

    package www.pro.cs_is.com.procsis;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
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.Menu;
import android.view.MenuItem;

public class MainActivity extends AppCompatActivity
        implements NavigationView.OnNavigationItemSelectedListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);



        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
                this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
        drawer.addDrawerListener(toggle);
        toggle.syncState();

        NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
        navigationView.setNavigationItemSelectedListener(this);
    }

    @Override
    public void onBackPressed() {
        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        if (drawer.isDrawerOpen(GravityCompat.START)) {
            drawer.closeDrawer(GravityCompat.START);
        } else {
            super.onBackPressed();
        }
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.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();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            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.miscellaneous_devices) {
            // Handle the camera action
        } else if (id == R.id.articles) {

        } else if (id == R.id.windows) {

        } else if (id == R.id.linux) {

        } else if (id == R.id.facebook) {

        } else if (id == R.id.information_security) {

        }

        DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
        drawer.closeDrawer(GravityCompat.START);
        return true;
    }
}

更新1 :在多次尝试之后,将IDE更新到3.1.2版后,这似乎是一个普遍的问题,到目前为止,只有一个 solution 尽管与预览中的顶部菜单选项类似,但@mtak建议使用该选项