android - 应用程序适用于 android 7 和 8，但不适用于 android 5 和 6

Question

应用程序在 android 8 虚拟设备上运行良好，但在 android 6.0.1 硬件设备上崩溃并强制关闭。该应用程序的 MinSDK 版本是 API21 android 5。在虚拟设备应用程序功能数据库连接上一切正常，但是当我尝试在硬件设备上运行应用程序时，它只显示初始屏幕，然后它自行关闭显示错误应用程序停止工作并显示logcat 中有很多错误，我正在理解它们。我已经提供了我在应用程序中使用的所有 Java 代码，以便您更好地理解

LogCat 中的错误

06-16 14:27:20.657 21865-21865/com.example.tanishqshastri_mppolice.jansunwai E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.tanishqshastri_mppolice.jansunwai, PID: 21865
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.tanishqshastri_mppolice.jansunwai/com.example.tanishqshastri_mppolice.jansunwai.MainActivity}: android.view.InflateException: Binary XML file line #38: Binary XML file line #38: Error inflating class <unknown>
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2434)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494)
        at android.app.ActivityThread.access$900(ActivityThread.java:153)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1347)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:148)
        at android.app.ActivityThread.main(ActivityThread.java:5451)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
     Caused by: android.view.InflateException: Binary XML file line #38: Binary XML file line #38: Error inflating class <unknown>
        at android.view.LayoutInflater.inflate(LayoutInflater.java:539)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
        at com.example.tanishqshastri_mppolice.jansunwai.MainActivity.onCreate(MainActivity.java:14)
        at android.app.Activity.performCreate(Activity.java:6323)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494) 
        at android.app.ActivityThread.access$900(ActivityThread.java:153) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1347) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:5451) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
     Caused by: android.view.InflateException: Binary XML file line #38: Error inflating class <unknown>
        at android.view.LayoutInflater.createView(LayoutInflater.java:645)
        at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:58)
        at android.view.LayoutInflater.onCreateView(LayoutInflater.java:694)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:762)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:835)
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:838)
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:838)
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:374) 
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) 
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 
        at com.example.tanishqshastri_mppolice.jansunwai.MainActivity.onCreate(MainActivity.java:14) 
        at android.app.Activity.performCreate(Activity.java:6323) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494) 
        at android.app.ActivityThread.access$900(ActivityThread.java:153) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1347) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:5451) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
     Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Constructor.newInstance(Native Method)
        at android.view.LayoutInflater.createView(LayoutInflater.java:619)
        at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:58) 
        at android.view.LayoutInflater.onCreateView(LayoutInflater.java:694) 
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:762) 
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) 
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:835) 
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:838) 
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:838) 
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:515) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:374) 
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) 
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 
        at com.example.tanishqshastri_mppolice.jansunwai.MainActivity.onCreate(MainActivity.java:14) 
        at android.app.Activity.performCreate(Activity.java:6323) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494) 
        at android.app.ActivityThread.access$900(ActivityThread.java:153) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1347) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:5451) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
     Caused by: android.content.res.Resources$NotFoundException: Resource "com.example.tanishqshastri_mppolice.jansunwai:drawable/roundstatus" (7f070082) is not a Drawable (color or path): TypedValue{t=0x1/d=0x7f070082 a=-1 r=0x7f070082}
        at android.content.res.Resources.loadDrawableForCookie(Resources.java:2625)
        at android.content.res.Resources.loadDrawable(Resources.java:2563)
        at android.content.res.TypedArray.getDrawable(TypedArray.java:870)
        at android.view.View.<init>(View.java:3975)
        at android.view.ViewGroup.<init>(ViewGroup.java:574)
        at android.widget.LinearLayout.<init>(LinearLayout.java:203)
        at android.widget.LinearLayout.<init>(LinearLayout.java:199)
        at android.widget.LinearLayout.<init>(LinearLayout.java:195)
        at java.lang.reflect.Constructor.newInstance(Native Method) 
        at android.view.LayoutInflater.createView(LayoutInflater.java:619) 
        at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:58) 
        at android.view.LayoutInflater.onCreateView(LayoutInflater.java:694) 
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:762) 
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) 
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:835) 
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:838) 
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:838) 
        at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:515) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:374) 
        at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287) 
        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139) 
        at com.example.tanishqshastri_mppolice.jansunwai.MainActivity.onCreate(MainActivity.java:14) 
        at android.app.Activity.performCreate(Activity.java:6323) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2387) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2494) 
        at android.app.ActivityThread.access$900(ActivityThread.java:153) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1347) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:5451) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

标签： android

Answer 1

真正的错误是这个：

资源“com.example.tanishqshastri_mppolice.jansunwai:drawable/roundstatus”（7f070082）不是可绘制对象（颜色或路径）：TypedValue{t=0x1/d=0x7f070082 a=-1 r=0x7f070082}

此可绘制对象的定义中的某些内容与 Android 6 不兼容，如果没有有关该可绘制资源的更多详细信息，我无法为您提供更多帮助

如果您的应用程序在 android 8 模拟器中运行良好，您不能假设它在每个以前的 android 版本上都能正常运行！如果您使用 android 6 模拟器图像，该应用程序将与真实设备完全一样崩溃