相关疑难解决方法(0)

所以现在Android 5.0发布了,我想知道如何设置动画操作栏图标的样式.

该库在这里实现和风格也对我很好,但由于程序兼容性V7库有它怎么能称呼？

我使用v7 DrawerToggle实现了这个功能.但是我无法设计它.请帮忙

我在v7 styles_base.xml中找到了它的样式

    <style name="Base.Widget.AppCompat.DrawerArrowToggle" parent="">
    <item name="color">?android:attr/textColorSecondary</item>
    <item name="thickness">2dp</item>
    <item name="barSize">18dp</item>
    <item name="gapBetweenBars">3dp</item>
    <item name="topBottomBarArrowSize">11.31dp</item>
    <item name="middleBarArrowSize">16dp</item>
    <item name="drawableSize">24dp</item>
    <item name="spinBars">true</item>
</style>

我把它添加到我的样式中并且没有用.也添加到我的attr.xml

<declare-styleable name="DrawerArrowToggle">
    <!-- The drawing color for the bars -->
    <attr name="color" format="color"/>
    <!-- Whether bars should rotate or not during transition -->
    <attr name="spinBars" format="boolean"/>
    <!-- The total size of the drawable -->
    <attr name="drawableSize" format="dimension"/>
    <!-- The max gap between the bars when they are parallel to each …

我有以下活动

class MainActivity : AppCompatActivity() {

private lateinit var drawerLayout: androidx.drawerlayout.widget.DrawerLayout

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.main_activity)

    drawerLayout = drawer_layout

    val navController = Navigation.findNavController(this, R.id.fragment_main_navHost)

    setSupportActionBar(toolbar)

    NavigationUI.setupActionBarWithNavController(this, navController, drawerLayout)
    navView_main.setupWithNavController(navController)
}

override fun onSupportNavigateUp(): Boolean {
    return NavigationUI.navigateUp(drawerLayout,
        Navigation.findNavController(this, R.id.fragment_main_navHost))
}

override fun onBackPressed() {
    if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
        drawerLayout.closeDrawer(GravityCompat.START)
    } else {
        super.onBackPressed()
    }
}

你可以看到它与导航图相关联,我正在使用导航抽屉.当我浏览抽屉中的项目时,我想保留汉堡图标,只有当我点击片段或弹出窗口中的项目时才将其更改为上/后按钮,并确保系统的行为反映了什么用户期望基于显示的图标.那可能吗