【发布时间】：2018-06-07 21:45:37
【问题描述】：
我有一个应用程序，通过查看 android studio 提供的示例，我在其中添加了 Navigation Drawer。但现在我想将抽屉添加到其他活动中。为此，我使用 Android Studio 提供的Navigation Drawer Activity 创建了一个新项目。我发现实现这一目标的最简单方法是
制作一个BaseActivity 并从BaseActivity 扩展我所有需要Navigation Drawer 的其他活动这是我的一些代码。
BaseActivity.java
package com.example.eddie.drawerapp2;
//I did not include the imports to make this shorter
public class BaseActivity extends AppCompatActivity implements
NavigationView.OnNavigationItemSelectedListener
{
protected FrameLayout frameLayout;
private DrawerLayout drawer;
private NavigationView navView;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.base_activity);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
android.support.v7.app.ActionBarDrawerToggle toggle = new android.support.v7.app.ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
frameLayout = (FrameLayout)findViewById(R.id.content_frame);
drawer = (DrawerLayout)findViewById(R.id.drawer_layout);
navView = (NavigationView)findViewById(R.id.nav_view);
navView.setNavigationItemSelectedListener(this);
}
@Override
public boolean onNavigationItemSelected(@NonNull MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camera) {
// Handle the camera action
} else if (id == R.id.nav_gallery) {
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
activity_base.xml
<?xml version="1.0" encoding="utf-8"?
<android.support.v4.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:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<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"
app:headerLayout="@layout/nav_header_main"
app:menu="@menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
当我转到activity_base.xml 并将其更改为设计视图时，它看起来很好。
MainActivity.java
package com.example.eddie.drawerapp2;
//skip imports
public class MainActivity extends BaseActivity{
private DrawerLayout drawer;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
LayoutInflater inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//inflate your activity layout here!
drawer = (findViewById(R.id.drawer_layout));
View contentView = inflater.inflate(R.layout.activity_main, null, false);
drawer.addView(contentView, 0);
}
}
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.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:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="@layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<FrameLayout
android:id="@+id/content_frame"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</android.support.v4.widget.DrawerLayout>
app_bar_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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"
tools:context="com.example.eddie.drawerapp2.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="@style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="@layout/content_main" />
</android.support.design.widget.CoordinatorLayout>
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.eddie.drawerapp2.MainActivity"
tools:showIn="@layout/app_bar_main">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
</android.support.constraint.ConstraintLayout>
activity_main.xml 和 MainActivity.java 有逻辑错误。它只显示内容和一个空白工具栏。滑动打开NavigationDrawer 也无济于事。我真的不知道该怎么办，这只是我的尝试。请帮帮我，我真的卡住了。我需要做什么才能将NavigationDrawer 添加到MainActivity 以及其他活动？
【问题讨论】：
-
inflater.inflate(R.layout.activity_main... 为什么？setContentView已经为你膨胀了一个视图...... -
在此处查看主要活动的 XML...stackoverflow.com/questions/26635485/…
标签： java android navigation-drawer