较低的android版本上的二进制xml文件行错误导致底部导航视图膨胀

Question

我是android编程的初学者，我一直试图在应用中实现底部导航视图以在API 17及更高版本上运行，但是在API 22 Lollipop手机上运行该应用时，该应用崩溃了，并且在低于API 24（android 7.0）的所有其他android版本上崩溃。

这是出现在logcat上的错误：

01-30 02:09:40.573 2435-2435/? E/AndroidRuntime: FATAL EXCEPTION: main
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dexter.myapp/com.dexter.myapp.activities.Myapp}: android.view.InflateException: Binary XML file line #17: Error inflating class android.support.design.widget.BottomNavigationView
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
        at android.app.ActivityThread.access$600(ActivityThread.java:141)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:5041)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
        at dalvik.system.NativeStart.main(Native Method)
     Caused by: android.view.InflateException: Binary XML file line #17: Error inflating class android.support.design.widget.BottomNavigationView
        at android.view.LayoutInflater.createView(LayoutInflater.java:613)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
        at com.dexter.myapp.activities.Myapp.onCreate(Myapp.java:43)
        at android.app.Activity.performCreate(Activity.java:5104)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
        at android.app.ActivityThread.access$600(ActivityThread.java:141) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
        at android.os.Handler.dispatchMessage(Handler.java:99) 
        at android.os.Looper.loop(Looper.java:137) 
        at android.app.ActivityThread.main(ActivityThread.java:5041) 
        at java.lang.reflect.Method.invokeNative(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:511) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
        at dalvik.system.NativeStart.main(Native Method) 
     Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Constructor.constructNative(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:417)
        at android.view.LayoutInflater.createView(LayoutInflater.java:587)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687) 
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) 
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 
        at com.dexter.myapp.activities.Myapp.onCreate(Myapp.java:43) 
        at android.app.Activity.performCreate(Activity.java:5104) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
        at android.app.ActivityThread.access$600(ActivityThread.java:141) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
        at android.os.Handler.dispatchMessage(Handler.java:99) 
        at android.os.Looper.loop(Looper.java:137) 
        at android.app.ActivityThread.main(ActivityThread.java:5041) 
        at java.lang.reflect.Method.invokeNative(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:511) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
        at dalvik.system.NativeStart.main(Native Method) 
     Caused by: android.content.res.Resources$NotFoundException: Resource ID #0x7f070064
        at android.content.res.Resources.getValue(Resources.java:1014)
        at android.support.v7.widget.AppCompatDrawableManager.loadDrawableFromDelegates(AppCompatDrawableManager.java:330)
        at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:195)
        at android.support.v7.widget.AppCompatDrawableManager.getDrawable(AppCompatDrawableManager.java:188)
        at android.support.v7.content.res.AppCompatResources.getDrawable(AppCompatResources.java:100)
        at android.support.v7.view.menu.MenuItemImpl.getIcon(MenuItemImpl.java:491)
        at android.support.design.internal.BottomNavigationItemView.initialize(BottomNavigationItemView.java:100)
        at android.support.design.internal.BottomNavigationMenuView.buildMenuView(BottomNavigationMenuView.java:281)
        at android.support.design.internal.BottomNavigationPresenter.updateMenuView(BottomNavigationPresenter.java:62)
        at android.support.design.widget.BottomNavigationView.inflateMenu(BottomNavigationView.java:236)
        at android.support.design.widget.BottomNavigationView.<init>(BottomNavigationView.java:165)
        at android.support.design.widget.BottomNavigationView.<init>(BottomNavigationView.java:114)
        at java.lang.reflect.Constructor.constructNative(Native Method) 
        at java.lang.reflect.Constructor.newInstance(Constructor.java:417) 
        at android.view.LayoutInflater.createView(LayoutInflater.java:587) 
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687) 
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) 
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 
        at com.dexter.myapp.activities.Myapp.onCreate(Myapp.java:43) 
        at android.app.Activity.performCreate(Activity.java:5104) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
        at android.app.ActivityThread.access$600(ActivityThread.java:141) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
        at android.os.Handler.dispatchMessage(Handler.java:99) 
        at android.os.Looper.loop(Looper.java:137) 
        at android.app.ActivityThread.main(ActivityThread.java:5041) 
        at java.lang.reflect.Method.invokeNative(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:511) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
        at dalvik.system.NativeStart.main(Native Method)

这是Myapp.java文件的第43行：

setContentView(R.layout.my_app_layout);

这是my_app_layout：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".activities.Myapp">

<FrameLayout
       android:id="@+id/fragment_container"
       android:layout_width="match_parent"
       android:layout_above="@+id/navigation"
       android:layout_height="match_parent">
</FrameLayout>

<android.support.design.widget.BottomNavigationView
    android:id="@+id/navigation"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:background="?android:attr/windowBackground"
    app:menu="@menu/navigation"
    app:itemIconTint="#000000"
    app:itemTextColor="#000000" />

</RelativeLayout>

我希望足以找到可能的问题并加以解决。

请注意，该应用程序以前可以在API 22上运行，因此我一直在想是否下载新的Android Studio 3.3。这里是有关我当前正在使用的android版本的更多信息：

 Android Studio 3.3
 Build #AI-182.5107.16.33.5199772, built on December 25, 2018
 JRE: 1.8.0_152-release-1248-b01 amd64
 JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
 Windows 10 10.0

谢谢。

Answer 1

欢迎堆栈溢出。

运行应用程序时，日志显示2条错误。

1。java.lang.reflect.InvocationTargetException 在这里，您可以使用注释targetapi

2。android.content.res.Resources$NotFoundException: Resource ID #0x7f070064。此处使用的资源不存在。

当您在Android中遇到此类布局问题时，一个简单的调试技巧是删除视图的所有自定义项，以了解问题的根源。例如，您认为在API级别21上添加了属性app。此外，在使用这些资源?android:attr/windowBackground

之前，您需要确认这些资源是否可用。

这是一个可行的例子

<android.support.design.widget.BottomNavigationView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:elevation="8dp"
        android:focusable="true"
        android:focusableInTouchMode="true"
        app:menu="@menu/navigation"
        tools:targetApi="lollipop" />

请注意，targetApi限制了较低的apis

Answer 2

我也得到了java.lang.reflect.InvocationTargetException，因为我试图向BottomNavigationView添加5个以上的项目。

我通过从菜单中删除一些项目来解决它，然后错误消失了。