java - 我似乎无法在旧的 android 手机上运行我的 android studio 项目

Question

我正在为我的一门大学编码类(class)开发一个游戏项目(用 Java 编写)，我使用的是 Android Studio。我了解 Java 基础知识，但我是 Android Studio 的新手。我的主要问题与在旧版 API/SDK 上运行/测试我的项目有关，特别是在旧手机上。

我一直在基于 API 26 的 Android 8.0 (Oreo) 上进行开发，尽管我也安装了 Pie (API 28)。目前我的targetSDKVersion是26，compileSDKVersion是26，minSDKVersion是19。

我正在尝试在 Samsung Galaxy S4 (API 19) 上运行我的应用程序(称为 AMaze)，这就是我的 minSDKVersion 为 19 的原因。它在支持 Android 8.0 及更高版本的手机上运行完全正常，据我所知'意识到。但是当我在我的 Galaxy S4 上运行该应用程序时，它会打开并立即崩溃并显示“不幸的是，您的应用程序已停止”。我不知道如何解决这个问题。

我已在 StackOverflow 和 Android 开发者网站上搜索答案，但运气极差。我试过使用 gradle 清理和重建项目，我试过禁用 Instant Run，我试过将 compileSDKVersion 设置为 19 而不是 26(但这会导致编译器生气，说 Google Play 需要它26 岁或以上)。我假设我的手机是 android 兼容的(见 https://developer.android.com/guide/practices/compatibility )，我按照说明将手机连接到我的电脑( https://developer.android.com/training/basics/firstapp/running-app )。根据 Developers 网站，看起来我应该做的就是将 minSDKVersion 设置为正确的级别，并针对代码中的任何 API 弃用和更新进行调整(我认为我已经完成了)。但它仍然不起作用。

我确实发现我的代码在我的主要 Activity (称为 AMazeActivity)的 onCreate() 方法中产生了膨胀异常。似乎有多种原因会导致此错误，但我无法找出根本原因。这个人有类似的情况: android.view.InflateException: Binary XML file: Error inflating class fragment

这是我在手机上运行该应用程序后收到的完整错误消息。错误消息说我的膨胀异常是由于试图膨胀 Spinner 造成的:

12/27 22:08:17: Launching app
No apk changes detected since last installation, skipping installation of C:\Users\jandj\AndroidStudioProjects\AMaze\app\build\outputs\apk\debug\app-debug.apk
$ adb shell am force-stop cs.cs301.amaze
$ adb shell am start -n "cs.cs301.amaze/cs.cs301.amaze.gui.AMazeActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Connected to process 28224 on device samsung-sgh_m919-47dccee4
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/dalvikvm: Could not find method android.view.Window$Callback.onPointerCaptureChanged, referenced from method android.support.v7.view.WindowCallbackWrapper.onPointerCaptureChanged
W/dalvikvm: VFY: unable to resolve interface method 16265: Landroid/view/Window$Callback;.onPointerCaptureChanged (Z)V
D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
I/dalvikvm: Could not find method android.view.Window$Callback.onProvideKeyboardShortcuts, referenced from method android.support.v7.view.WindowCallbackWrapper.onProvideKeyboardShortcuts
W/dalvikvm: VFY: unable to resolve interface method 16267: Landroid/view/Window$Callback;.onProvideKeyboardShortcuts (Ljava/util/List;Landroid/view/Menu;I)V
D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/view/SearchEvent;)
I/dalvikvm: Could not find method android.view.Window$Callback.onSearchRequested, referenced from method android.support.v7.view.WindowCallbackWrapper.onSearchRequested
W/dalvikvm: VFY: unable to resolve interface method 16269: Landroid/view/Window$Callback;.onSearchRequested (Landroid/view/SearchEvent;)Z
D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
I/dalvikvm: Could not find method android.view.Window$Callback.onWindowStartingActionMode, referenced from method android.support.v7.view.WindowCallbackWrapper.onWindowStartingActionMode
W/dalvikvm: VFY: unable to resolve interface method 16273: Landroid/view/Window$Callback;.onWindowStartingActionMode (Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
D/dalvikvm: VFY: replacing opcode 0x72 at 0x0002
I/dalvikvm: Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.widget.TintTypedArray.getChangingConfigurations
W/dalvikvm: VFY: unable to resolve virtual method 708: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002
I/dalvikvm: Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.widget.TintTypedArray.getType
W/dalvikvm: VFY: unable to resolve virtual method 730: Landroid/content/res/TypedArray;.getType (I)I
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0008
I/dalvikvm: Could not find method android.content.Context.createDeviceProtectedStorageContext, referenced from method android.support.v4.content.ContextCompat.createDeviceProtectedStorageContext
W/dalvikvm: VFY: unable to resolve virtual method 485: Landroid/content/Context;.createDeviceProtectedStorageContext ()Landroid/content/Context;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
I/dalvikvm: Could not find method android.content.Context.getCodeCacheDir, referenced from method android.support.v4.content.ContextCompat.getCodeCacheDir
W/dalvikvm: VFY: unable to resolve virtual method 491: Landroid/content/Context;.getCodeCacheDir ()Ljava/io/File;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
I/dalvikvm: Could not find method android.content.Context.getColor, referenced from method android.support.v4.content.ContextCompat.getColor
W/dalvikvm: VFY: unable to resolve virtual method 492: Landroid/content/Context;.getColor (I)I
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
I/dalvikvm: Could not find method android.content.Context.getColorStateList, referenced from method android.support.v4.content.ContextCompat.getColorStateList
W/dalvikvm: VFY: unable to resolve virtual method 493: Landroid/content/Context;.getColorStateList (I)Landroid/content/res/ColorStateList;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
I/dalvikvm: Could not find method android.content.Context.getDataDir, referenced from method android.support.v4.content.ContextCompat.getDataDir
W/dalvikvm: VFY: unable to resolve virtual method 495: Landroid/content/Context;.getDataDir ()Ljava/io/File;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
I/dalvikvm: Could not find method android.content.Context.getDrawable, referenced from method android.support.v4.content.ContextCompat.getDrawable
W/dalvikvm: VFY: unable to resolve virtual method 496: Landroid/content/Context;.getDrawable (I)Landroid/graphics/drawable/Drawable;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
I/dalvikvm: Could not find method android.content.Context.getNoBackupFilesDir, referenced from method android.support.v4.content.ContextCompat.getNoBackupFilesDir
W/dalvikvm: VFY: unable to resolve virtual method 503: Landroid/content/Context;.getNoBackupFilesDir ()Ljava/io/File;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
I/dalvikvm: Could not find method android.content.Context.isDeviceProtectedStorage, referenced from method android.support.v4.content.ContextCompat.isDeviceProtectedStorage
W/dalvikvm: VFY: unable to resolve virtual method 516: Landroid/content/Context;.isDeviceProtectedStorage ()Z
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
I/dalvikvm: Could not find method android.content.Context.startForegroundService, referenced from method android.support.v4.content.ContextCompat.startForegroundService
W/dalvikvm: VFY: unable to resolve virtual method 531: Landroid/content/Context;.startForegroundService (Landroid/content/Intent;)Landroid/content/ComponentName;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
I/dalvikvm: Could not find method android.widget.FrameLayout.startActionModeForChild, referenced from method android.support.v7.widget.ActionBarContainer.startActionModeForChild
W/dalvikvm: VFY: unable to resolve virtual method 16736: Landroid/widget/FrameLayout;.startActionModeForChild (Landroid/view/View;Landroid/view/ActionMode$Callback;I)Landroid/view/ActionMode;
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0002
I/dalvikvm: Could not find method android.content.Context.getColorStateList, referenced from method android.support.v7.content.res.AppCompatResources.getColorStateList
W/dalvikvm: VFY: unable to resolve virtual method 493: Landroid/content/Context;.getColorStateList (I)Landroid/content/res/ColorStateList;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0006
W/dalvikvm: VFY: unable to find class referenced in signature (Landroid/graphics/drawable/Icon;)
I/dalvikvm: Could not find method android.widget.ImageButton.setImageIcon, referenced from method android.support.v7.widget.AppCompatImageButton.setImageIcon
W/dalvikvm: VFY: unable to resolve virtual method 16759: Landroid/widget/ImageButton;.setImageIcon (Landroid/graphics/drawable/Icon;)V
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0000
I/dalvikvm: Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.widget.ResourcesWrapper.getDrawable
W/dalvikvm: VFY: unable to resolve virtual method 671: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002
I/dalvikvm: Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.widget.ResourcesWrapper.getDrawableForDensity
W/dalvikvm: VFY: unable to resolve virtual method 673: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0002
E/dalvikvm: Could not find class 'android.graphics.drawable.RippleDrawable', referenced from method android.support.v7.widget.AppCompatImageHelper.hasOverlappingRendering
W/dalvikvm: VFY: unable to resolve instanceof 194 (Landroid/graphics/drawable/RippleDrawable;) in Landroid/support/v7/widget/AppCompatImageHelper;
D/dalvikvm: VFY: replacing opcode 0x20 at 0x000c
I/dalvikvm: Could not find method android.widget.TextView.getAutoSizeMaxTextSize, referenced from method android.support.v7.widget.AppCompatTextView.getAutoSizeMaxTextSize
W/dalvikvm: VFY: unable to resolve virtual method 17062: Landroid/widget/TextView;.getAutoSizeMaxTextSize ()I
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0006
I/dalvikvm: Could not find method android.widget.TextView.getAutoSizeMinTextSize, referenced from method android.support.v7.widget.AppCompatTextView.getAutoSizeMinTextSize
W/dalvikvm: VFY: unable to resolve virtual method 17063: Landroid/widget/TextView;.getAutoSizeMinTextSize ()I
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0006
I/dalvikvm: Could not find method android.widget.TextView.getAutoSizeStepGranularity, referenced from method android.support.v7.widget.AppCompatTextView.getAutoSizeStepGranularity
W/dalvikvm: VFY: unable to resolve virtual method 17064: Landroid/widget/TextView;.getAutoSizeStepGranularity ()I
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0006
I/dalvikvm: Could not find method android.widget.TextView.getAutoSizeTextAvailableSizes, referenced from method android.support.v7.widget.AppCompatTextView.getAutoSizeTextAvailableSizes
W/dalvikvm: VFY: unable to resolve virtual method 17065: Landroid/widget/TextView;.getAutoSizeTextAvailableSizes ()[I
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0006
I/dalvikvm: Could not find method android.widget.TextView.getAutoSizeTextType, referenced from method android.support.v7.widget.AppCompatTextView.getAutoSizeTextType
W/dalvikvm: VFY: unable to resolve virtual method 17066: Landroid/widget/TextView;.getAutoSizeTextType ()I
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0007
I/dalvikvm: Could not find method android.widget.TextView.setAutoSizeTextTypeUniformWithConfiguration, referenced from method android.support.v7.widget.AppCompatTextView.setAutoSizeTextTypeUniformWithConfiguration
W/dalvikvm: VFY: unable to resolve virtual method 17109: Landroid/widget/TextView;.setAutoSizeTextTypeUniformWithConfiguration (IIII)V
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0006
I/dalvikvm: Could not find method android.widget.TextView.setAutoSizeTextTypeUniformWithPresetSizes, referenced from method android.support.v7.widget.AppCompatTextView.setAutoSizeTextTypeUniformWithPresetSizes
W/dalvikvm: VFY: unable to resolve virtual method 17110: Landroid/widget/TextView;.setAutoSizeTextTypeUniformWithPresetSizes ([II)V
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0006
I/dalvikvm: Could not find method android.widget.TextView.setAutoSizeTextTypeWithDefaults, referenced from method android.support.v7.widget.AppCompatTextView.setAutoSizeTextTypeWithDefaults
W/dalvikvm: VFY: unable to resolve virtual method 17111: Landroid/widget/TextView;.setAutoSizeTextTypeWithDefaults (I)V
D/dalvikvm: VFY: replacing opcode 0x6f at 0x0006
I/dalvikvm: Could not find method android.widget.TextView.getAutoSizeStepGranularity, referenced from method android.support.v7.widget.AppCompatTextHelper.loadFromAttributes
W/dalvikvm: VFY: unable to resolve virtual method 17064: Landroid/widget/TextView;.getAutoSizeStepGranularity ()I
D/dalvikvm: VFY: replacing opcode 0x6e at 0x0163
I/dalvikvm: Could not find method android.text.StaticLayout$Builder.obtain, referenced from method android.support.v7.widget.AppCompatTextViewAutoSizeHelper.createStaticLayoutForMeasuring
W/dalvikvm: VFY: unable to resolve static method 15540: Landroid/text/StaticLayout$Builder;.obtain (Ljava/lang/CharSequence;IILandroid/text/TextPaint;I)Landroid/text/StaticLayout$Builder;
D/dalvikvm: VFY: replacing opcode 0x71 at 0x0014
D/ProgressBar: setProgressDrawable drawableHeight = 36
D/AbsSeekBar: AbsSeekBar Constructor: mAllowedSeeBarAnimation = true
D/ProgressBar: setProgressDrawable drawableHeight = 36
    setProgressDrawable getHeight() = 0
    updateDrawableBounds: left = 0
    updateDrawableBounds: top = 0
    updateDrawableBounds: right = -96
    updateDrawableBounds: bottom = 0
    updateDrawableBounds: mProgressDrawable.setBounds()
I/dalvikvm: Could not find method android.widget.Spinner.getPopupContext, referenced from method android.support.v7.widget.AppCompatSpinner.getPopupContext
W/dalvikvm: VFY: unable to resolve virtual method 17017: Landroid/widget/Spinner;.getPopupContext ()Landroid/content/Context;
D/dalvikvm: VFY: replacing opcode 0x6f at 0x000d
W/ResourceType: Skipping entry 0x7f050026 in package table 0 because it is not complex!
E/AMazeActivity: onCreate
    android.view.InflateException: Binary XML file line #46: Error inflating class Spinner
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:719)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:354)
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
        at cs.cs301.amaze.gui.AMazeActivity.onCreate(AMazeActivity.java:39)
        at android.app.Activity.performCreate(Activity.java:5585)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2400)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2495)
        at android.app.ActivityThread.access$900(ActivityThread.java:170)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1304)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:146)
        at android.app.ActivityThread.main(ActivityThread.java:5635)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107)
        at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.NullPointerException
        at android.content.res.AssetManager.getResourceTextArray(AssetManager.java:215)
        at android.content.res.Resources.getTextArray(Resources.java:1626)
        at android.content.res.TypedArray.getTextArray(TypedArray.java:629)
        at android.widget.AbsSpinner.<init>(AbsSpinner.java:74)
        at android.widget.Spinner.<init>(Spinner.java:174)
        at android.widget.Spinner.<init>(Spinner.java:153)
        at android.support.v7.widget.AppCompatSpinner.<init>(AppCompatSpinner.java:195)
        at android.support.v7.widget.AppCompatSpinner.<init>(AppCompatSpinner.java:166)
        at android.support.v7.widget.AppCompatSpinner.<init>(AppCompatSpinner.java:147)
        at android.support.v7.widget.AppCompatSpinner.<init>(AppCompatSpinner.java:132)
        at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:115)
        at android.support.v7.app.AppCompatDelegateImplV9.createView(AppCompatDelegateImplV9.java:1024)
        at android.support.v7.app.AppCompatDelegateImplV9.onCreateView(AppCompatDelegateImplV9.java:1081)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:690)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:761) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:498) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:398) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:354) 
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) 
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 
        at cs.cs301.amaze.gui.AMazeActivity.onCreate(AMazeActivity.java:39) 
        at android.app.Activity.performCreate(Activity.java:5585) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2400) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2495) 
        at android.app.ActivityThread.access$900(ActivityThread.java:170) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1304) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:146) 
        at android.app.ActivityThread.main(ActivityThread.java:5635) 
        at java.lang.reflect.Method.invokeNative(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:515) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107) 
        at dalvik.system.NativeStart.main(Native Method) 
D/AndroidRuntime: Shutting down VM
W/dalvikvm: threadid=1: thread exiting with uncaught exception (group=0x417eeda0)
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: cs.cs301.amaze, PID: 28224
    java.lang.RuntimeException: Unable to start activity ComponentInfo{cs.cs301.amaze/cs.cs301.amaze.gui.AMazeActivity}: android.view.InflateException: Binary XML file line #46: Error inflating class Spinner
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2436)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2495)
        at android.app.ActivityThread.access$900(ActivityThread.java:170)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1304)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:146)
        at android.app.ActivityThread.main(ActivityThread.java:5635)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107)
        at dalvik.system.NativeStart.main(Native Method)
     Caused by: android.view.InflateException: Binary XML file line #46: Error inflating class Spinner
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:719)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:761)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:498)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:398)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:354)
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
        at cs.cs301.amaze.gui.AMazeActivity.onCreate(AMazeActivity.java:39)
        at android.app.Activity.performCreate(Activity.java:5585)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2400)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2495) 
        at android.app.ActivityThread.access$900(ActivityThread.java:170) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1304) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:146) 
        at android.app.ActivityThread.main(ActivityThread.java:5635) 
        at java.lang.reflect.Method.invokeNative(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:515) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107) 
        at dalvik.system.NativeStart.main(Native Method) 
     Caused by: java.lang.NullPointerException
        at android.content.res.AssetManager.getResourceTextArray(AssetManager.java:215)
        at android.content.res.Resources.getTextArray(Resources.java:1626)
        at android.content.res.TypedArray.getTextArray(TypedArray.java:629)
        at android.widget.AbsSpinner.<init>(AbsSpinner.java:74)
        at android.widget.Spinner.<init>(Spinner.java:174)
        at android.widget.Spinner.<init>(Spinner.java:153)
        at android.support.v7.widget.AppCompatSpinner.<init>(AppCompatSpinner.java:195)
        at android.support.v7.widget.AppCompatSpinner.<init>(AppCompatSpinner.java:166)
        at android.support.v7.widget.AppCompatSpinner.<init>(AppCompatSpinner.java:147)
        at android.support.v7.widget.AppCompatSpinner.<init>(AppCompatSpinner.java:132)
        at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:115)
        at android.support.v7.app.AppCompatDelegateImplV9.createView(AppCompatDelegateImplV9.java:1024)
        at android.support.v7.app.AppCompatDelegateImplV9.onCreateView(AppCompatDelegateImplV9.java:1081)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:690)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:761) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:498) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:398) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:354) 
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) 
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 
        at cs.cs301.amaze.gui.AMazeActivity.onCreate(AMazeActivity.java:39) 
        at android.app.Activity.performCreate(Activity.java:5585) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2400) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2495) 
        at android.app.ActivityThread.access$900(ActivityThread.java:170) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1304) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:146) 
        at android.app.ActivityThread.main(ActivityThread.java:5635) 
        at java.lang.reflect.Method.invokeNative(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:515) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1291) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1107) 
        at dalvik.system.NativeStart.main(Native Method) 
I/Process: Sending signal. PID: 28224 SIG: 9
Application terminated.

这是我的主要 Activity 中发生崩溃的地方。我尝试将代码包围在 try/catch block 中以捕获异常并将其更清晰地打印出来，如上图所示:

@Override
    protected void onCreate(Bundle savedInstanceState) {
        try {

            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_amaze);
        }
        catch (Exception e) {
            e.getCause();
            Log.e("AMazeActivity", "onCreate", e);
            throw e;
        }
.  .  .
.  .  .

注意事项:我为我的 Activity 使用约束布局，我只在程序中使用一个自定义 View ，并且我没有使用自定义主题。这是异常提示 Spinner 的 XML 文件:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
    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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

    tools:context="cs.cs301.amaze.gui.AMazeActivity">

   .  .  .

    <TextView
        android:id="@+id/diff_JFrame"
        android:layout_width="248dp"
        android:layout_height="60dp"
        android:layout_marginStart="16dp"
        android:layout_marginTop="256dp"
        android:text="Difficulty/Size"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

   .  .  .

    <Spinner
        android:id="@+id/mazeGen"
        android:layout_width="248dp"
        android:layout_height="35dp"
        android:layout_marginStart="16dp"
        android:layout_marginEnd="120dp"
        android:layout_marginBottom="130dp"
        android:entries="@color/colorAccent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        />
   .  .  .

我认为这可能只是更改设置中的几行(可能在 gradle、 list 文件、R 类、XML 文件等)中的问题，但我不知道要更改什么或在哪里更改。任何帮助将不胜感激!

Answer 1

改变这一行

android:entries="@color/colorAccent"

到

android:entries="@array/yourarrayname"