在 android Navigation deeplink 错误：数组不支持默认值

Question

我有一个这样的深层链接：

 <deepLink
    android:id="@+id/applink_one"
    app:uri="https://sample.com/{arg1}/?arg2={arg2}" />

并像这样定义参数：

<argument
    android:name="arg1"
    app:argType="string" />

<argument
    android:name="arg2"
    android:defaultValue="@null"
    app:argType="string[]"
    app:nullable="true"
    />

调用时：

https://sample.com/tags/?arg2=test&arg2=toast

我收到此错误并退出应用程序：

Caused by: android.view.InflateException: Binary XML file line #19 in com.sample.app:layout/activity_nav_host: Error inflating class androidx.fragment.app.FragmentContainerView

Caused by: java.lang.UnsupportedOperationException: Arrays don't support default values.

我无法检测到错误。

“数组不支持默认值。”？

我能做什么？

我的导航版本：

androidx.navigation:navigation-fragment-ktx:2.2.0
androidx.navigation:navigation-ui-ktx::2.2.0
androidx.navigation:navigation-safe-args-gradle-plugin:2.2.0

整个堆栈跟踪：

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.sample.app, PID: 24284
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.sample.app/com.sample.app.presentation.NavHostActivity}: android.view.InflateException: Binary XML file line #19 in com.sample.app:layout/activity_nav_host: Binary XML file line #19 in com.sample.app:layout/activity_nav_host: Error inflating class androidx.fragment.app.FragmentContainerView
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3835)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4011)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2325)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:246)
        at android.app.ActivityThread.main(ActivityThread.java:8633)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
     Caused by: android.view.InflateException: Binary XML file line #19 in com.sample.app:layout/activity_nav_host: Binary XML file line #19 in com.sample.app:layout/activity_nav_host: Error inflating class androidx.fragment.app.FragmentContainerView
     Caused by: android.view.InflateException: Binary XML file line #19 in com.sample.app:layout/activity_nav_host: Error inflating class androidx.fragment.app.FragmentContainerView
     Caused by: java.lang.UnsupportedOperationException: Arrays don't support default values.
        at androidx.navigation.NavType$11.parseValue(NavType.java:623)
        at androidx.navigation.NavType$11.parseValue(NavType.java:609)
        at androidx.navigation.NavType.parseAndPut(NavType.java:96)
        at androidx.navigation.NavDeepLink.parseArgument(NavDeepLink.java:187)
        at androidx.navigation.NavDeepLink.getMatchingArguments(NavDeepLink.java:174)
        

Answer 1

删除这个错误的默认值，不能为[]类型设置：

android:defaultValue="@null"
app:nullable="true"

它还显示R.layout.activity_nav_host，行#19 ...这可能是在哪里看。

---

否则深层链接将通过String[]：

https://sample.com/tags/?arg2=[test,toast]