[英]Clicking on hamburger icon sometimes does not open navigation drawer in android
當單擊漢堡包圖標有時無法打開導航抽屜,但有時可以正常工作有時會出現單擊漢堡包圖標的問題。請幫助我解決此問題。我的代碼在這里:-
activity_main.xml:-
<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">
<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:itemBackground="@drawable/drawer_item"
android:visibility="gone"
app:headerLayout="@layout/nav_header_main2"
app:itemTextColor="@color/colorWhite"
app:menu="@menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
我的Kotlin文件:-
override fun onNavigationItemSelected(item: MenuItem): Boolean {
when (item.itemId) {
R.id.navFormula -> {
}
}
drawer_layout.closeDrawer(GravityCompat.START)
return true
}
檢查您的導航是否正確實例化為休假
...
setSupportActionBar(toolbar)
val toggle = ActionBarDrawerToggle(
this, drawer_layout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close)
drawer_layout.addDrawerListener(toggle)
toggle.syncState()
...
我建議您在xml上的activity_main.xml上創建自己的工具欄
<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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?android:attr/actionBarSize"
android:background="@color/colorPrimary"
xmlns:android="http://schemas.android.com/apk/res/android">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="@+id/menu_container"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:paddingRight="@dimen/default_margin">
<ImageView
android:id="@+id/menuIcon"
android:layout_width="30dp"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:contentDescription="@string/app_name"
android:src="@drawable/ic_menu_black_24dp"/>
</RelativeLayout>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:textColor="@android:color/white"
android:textStyle="bold"
android:textAlignment="center"
android:layout_marginStart="50dp"
android:id="@+id/toolTitle" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
</RelativeLayout>
<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:itemBackground="@drawable/drawer_item"
android:visibility="gone"
app:headerLayout="@layout/nav_header_main2"
app:itemTextColor="@color/colorWhite"
app:menu="@menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
然后,在您的活動,創建時,輸入:
//set the custom toolbar as the action bar
setSupportActionBar(toolbar)
//set the NavigationItemListener
navigationView.setNavigationItemSelectedListener { item ->
item.isChecked = true
//close drawer when an item is clicked
drawer.closeDrawers()
when (item.itemId) {
}
false
}
//open drawer when the hamburger icon is clicked
menuIcon.setOnClickListener {
drawer.openDrawer(nav_view, true)
}
使用以下設置,單擊“漢堡包”圖標后,它將始終打開導航抽屜:
override fun onCreate(savedInstanceState: Bundle?) {
...
// Add Toolbar
setSupportActionBar(findViewById(R.id.tb_settings))
getSupportActionBar()!!.setDisplayHomeAsUpEnabled(true)
getSupportActionBar()!!.setDisplayShowHomeEnabled(true)
...
}
override fun onSupportNavigateUp(): Boolean {
// Open Navigation Bar
drawer_layout.openDrawer(nav_view, true)
return true
}
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