如何配置NavigationView在Android Studio中从右向左打开? [英] How to configure NavigationView to open from Right-to-Left in Android Studio?
问题描述
我正在尝试从右到左打开导航视图,但是失败了.我看过很多问题,他们说的话似乎还不完整.
I'm trying to make navigation view open from Right-to-Left, but I fail. I've seen many questions, and what they say seems to be incomplete.
这是我根据这些问题所做的事情:
Here's what I've done based on these questions:
- 在Android Studio中创建新项目
- 选择导航抽屉活动模板作为主要活动的默认模板(将其命名为
MainActivity
) - 转到
activity_main.xml
并为NavigationView
设置layout_gravity="right"
- 然后在
MainActivity.java
中将所有GravityCompat.START
设置为Gravity.RIGHT
- Creating a new project in Android Studio
- Selecting the Navigation Drawer Activity template as the default template for the main activity (naming it
MainActivity
) - Going to
activity_main.xml
and settinglayout_gravity="right"
forNavigationView
- Then in the
MainActivity.java
set allGravityCompat.START
s toGravity.RIGHT
但是当我运行该应用程序并单击操作栏内的抽屉开关时,出现此错误:
But when I run the app, and click on the drawer toggle inside the action bar, I get this error:
java.lang.IllegalArgumentException: No drawer view found with gravity LEFT
at android.support.v4.widget.DrawerLayout.openDrawer(DrawerLayout.java:1651)
at android.support.v4.widget.DrawerLayout.openDrawer(DrawerLayout.java:1637)
at android.support.v7.app.ActionBarDrawerToggle.toggle(ActionBarDrawerToggle.java:293)
at android.support.v7.app.ActionBarDrawerToggle$1.onClick(ActionBarDrawerToggle.java:202)
at android.view.View.performClick(View.java:5610)
at android.view.View$PerformClick.run(View.java:22265)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
请帮助.
推荐答案
实际上问题在于 ActionBarDrawerToggle 构造函数 除了您提到的上述更改之外,您还应该尝试此操作
Actually the problem is with the ActionBarDrawerToggle constructor Apart from above changes you have mentioned you should also try this
步骤1:从ActionBarDrawerToggle构造函数中删除工具栏参数.现在应该像这样
Step 1: Remove the toolbar parameter from the ActionBarDrawerToggle constructor.It should be like this now
toggle = new ActionBarDrawerToggle(
this, drawer, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
第2步: 自定义您的选项菜单以将其用于导航抽屉
Step 2: customize your options menu to use it for navigation drawer
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
MenuItem itemCart = menu.findItem(R.id.action_burger);
LayerDrawable icon = (LayerDrawable) itemCart.getIcon();
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_burger:
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if(drawer.isDrawerOpen(GravityCompat.END)) {
drawer.closeDrawer(GravityCompat.END);
}else
drawer.openDrawer(GravityCompat.END);
break;
}
return super.onOptionsItemSelected(item);
}
main.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"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="com.example.mobikul.MainActivity" >
<item
android:id="@+id/action_burger"
android:icon="@drawable/ic_menu_notification"
android:title="Settings"
app:showAsAction="always" />
</menu>
ic_menu_notification.xml
<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item
android:drawable="@drawable/burger_icon"
android:gravity="center" />
<item
android:id="@+id/ic_badge"
android:drawable="@drawable/burger_icon" />
</layer-list>
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