http://developer.android.com/training/implementing-navigation/nav-drawer.html
根据这份文档,它没有说明是否可能从右侧实现抽屉。 这真的可能吗? :(
http://developer.android.com/training/implementing-navigation/nav-drawer.html
根据这份文档,它没有说明是否可能从右侧实现抽屉。 这真的可能吗? :(
NavigationDrawer可以配置为从左侧、右侧或两侧拉出。关键是在XML声明中抽屉的出现顺序以及layout_gravity属性的设置。以下是一个示例:
<android.support.v4.widget.DrawerLayout
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<FrameLayout
android:id="@+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:baselineAligned="false" >
</FrameLayout>
<!-- Left drawer -->
<ListView
android:id="@+id/left_drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="left"
android:choiceMode="singleChoice" />
<!-- Right drawer -->
<ListView
android:id="@+id/right_drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="right"
android:choiceMode="singleChoice" />
</android.support.v4.widget.DrawerLayout>
http://developer.android.com/reference/android/support/v4/widget/DrawerLayout.html
我的应用崩溃了,报错信息为“找不到位置在 LEFT 的抽屉视图”。
于是我将以下内容添加到 onOptionsItemSelected 方法中:
if (item != null && item.getItemId() == android.R.id.home) {
if (mDrawerLayout.isDrawerOpen(Gravity.RIGHT)) {
mDrawerLayout.closeDrawer(Gravity.RIGHT);
} else {
mDrawerLayout.openDrawer(Gravity.RIGHT);
}
}
在https://dev59.com/d2Qn5IYBdhLWcg3wCjX0#21781710的解决方案基础上,还需要进行以下操作。
如果您正在使用由Android Studio创建的导航抽屉项目,则onOptionsItemSelected
中的内容将会有所改变。因为他们创建了子类,所以您需要使用以下代码:
if (item != null && id == android.R.id.home) {
if (mNavigationDrawerFragment.isDrawerOpen(Gravity.RIGHT)) {
mNavigationDrawerFragment.closeDrawer(Gravity.RIGHT);
} else {
mNavigationDrawerFragment.openDrawer(Gravity.RIGHT);
}
return true;
}
NavigationDrawerFragment
中,您需要创建3个方法:public boolean isDrawerOpen(int gravity) {
return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(gravity);
}
public void closeDrawer(int gravity) {
mDrawerLayout.closeDrawer(gravity);
}
public void openDrawer(int gravity) {
mDrawerLayout.openDrawer(gravity);
}
NavigationView
。例如:<?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" />
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="end"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_main"
app:menu="@menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
从右侧实现导航抽屉很容易,比看起来简单得多。 在我看来,最简单的解决方案是:
Extend DrawerLayout class and override open() and close() functions as below
class EndDrawerLayout : DrawerLayout {
constructor(context: Context) : super(context)
constructor(context: Context, attrs: AttributeSet?) : super(context, attrs)
constructor(context: Context, attrs: AttributeSet?, defStyleAttr: Int): super(context, attrs, defStyleAttr)
override fun open() = openDrawer(GravityCompat.END)
override fun close() = closeDrawer(GravityCompat.END)
}
Use the custom DrawerLayout in your XML
Set NavigationView attribute android:layout_gravity="end"
<com.custom.myapplication.ui.EndDrawerLayout
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="end">
<include
android:id="@+id/app_bar_main"
layout="@layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<com.google.android.material.navigation.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="end"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_main"
app:menu="@menu/activity_main_drawer" />
</com.custom.myapplication.ui.EndDrawerLayout>
Enjoy
然后使用这些代码@amal,我认为这会对你有所帮助。 XML:
<!-- Framelayout to display Fragments -->
<FrameLayout
android:id="@+id/frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="48dp"
android:background="@drawable/counter_bg" >
<ImageView
android:id="@+id/iconl"
android:layout_width="25dp"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:layout_marginLeft="12dp"
android:layout_marginRight="12dp"
android:src="@drawable/ic_launcher" />
<ImageView
android:id="@+id/iconr"
android:layout_width="25dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginRight="17dp"
android:src="@drawable/ic_launcher" />
</RelativeLayout>
</FrameLayout>
<!-- Listview to display slider menu -->
<ListView
android:id="@+id/list_slidermenu"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="start"
android:background="@color/list_background"
android:choiceMode="singleChoice"
android:divider="@color/list_divider"
android:dividerHeight="1dp"
android:listSelector="@drawable/list_selector" />
<ListView
android:id="@+id/list_slidermenu2"
android:layout_width="240dp"
android:layout_height="match_parent"
android:layout_gravity="end"
android:background="@color/list_background"
android:choiceMode="singleChoice"
android:divider="@color/list_divider"
android:dividerHeight="1dp"
android:listSelector="@drawable/list_selector" />
//设置所需图片
活动代码:
ImageView iconl,iconr;
private DrawerLayout mDrawerLayout;
private ListView mDrawerList,mDrawerList2;
ImageView iconl,iconr;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
iconl = (ImageView)findViewById(R.id.iconl);
iconr = (ImageView)findViewById(R.id.iconr);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.list_slidermenu);
mDrawerList2 = (ListView) findViewById(R.id.list_slidermenu2);
mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
mDrawerList2.setOnItemClickListener(new SlideMenuClickListener());
iconl.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mDrawerLayout.openDrawer(Gravity.START);
mDrawerLayout.closeDrawer(Gravity.END);
}
});
iconr.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mDrawerLayout.openDrawer(Gravity.END);
mDrawerLayout.closeDrawer(Gravity.START);
}
});
}
}
在这里,您可以为两个列表设置自己的列表适配器,并在项目单击时调用displayView(position)方法,在其中将您的片段添加到framelayout中。
/**
* Diplaying fragment view for selected nav drawer list item
* */
private void displayView(int position) {
// update the main content by replacing fragments
Fragment fragment = null;
switch (position) {
case 0:
fragment = new HomeFragment();
break;
default:
break;
}
if (fragment != null)
{
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.frame_container, fragment).commit();
// update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
mDrawerLayout.closeDrawer(mDrawerList);
} else {
// error in creating fragment
Log.e("MainActivity", "Error in creating fragment");
}
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
im1=findViewById(R.id.humburgericon);
im1.setOnClickListener(new View.OnClickListener() {
@SuppressLint("WrongConstant")
@Override
public void onClick(View v) {
drawerLayout.openDrawer(Gravity.END);});