使用AndroidX工件的新应用崩溃

时间：2019-02-08 16:28:29

标签： android androidx

在创建新应用并检查Use Android X artifacts而未修改任何内容时，我的手机和仿真器上的应用都会崩溃。

我已要求我的朋友重复创建应用程序的方法，并且手机中的所有功能都可以正常工作。

这是我第一次使用Android X，我做错什么了吗？我正在快速运行Android Studio 3.3.0.20（Linux）。

2019-02-08 17:54:44.477 5487-5487/worshifter.com.myapplication E/AndroidRuntime: FATAL EXCEPTION: main
Process: worshifter.com.myapplication, PID: 5487
java.lang.RuntimeException: Unable to start activity ComponentInfo{worshifter.com.myapplication/worshifter.com.myapplication.MainActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.widget.ConstraintLayout
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6669)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
 Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class androidx.constraintlayout.widget.ConstraintLayout
 Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class androidx.constraintlayout.widget.ConstraintLayout
 Caused by: java.lang.reflect.InvocationTargetException
    at java.lang.reflect.Constructor.newInstance0(Native Method)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
    at android.view.LayoutInflater.createView(LayoutInflater.java:647)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
    at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
    at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
    at worshifter.com.myapplication.MainActivity.onCreate(MainActivity.java:12)
    at android.app.Activity.performCreate(Activity.java:7136)
    at android.app.Activity.performCreate(Activity.java:7127)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
    at android.os.Handler.dispatchMessage(Handler.java:106)
    at android.os.Looper.loop(Looper.java:193)
    at android.app.ActivityThread.main(ActivityThread.java:6669)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
 Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Landroidx/constraintlayout/widget/R$styleable;
    at androidx.constraintlayout.widget.ConstraintLayout.init(ConstraintLayout.java:590)
    at androidx.constraintlayout.widget.ConstraintLayout.<init>(ConstraintLayout.java:567)
    at java.lang.reflect.Constructor.newInstance0(Native Method) 
    at java.lang.reflect.Constructor.newInstance(Constructor.java:343) 
    at android.view.LayoutInflater.createView(LayoutInflater.java:647) 
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790) 
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:492) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
    at android.view.LayoutInflater.inflate(LayoutInflater.java:374) 
    at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469) 
    at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140) 
    at worshifter.com.myapplication.MainActivity.onCreate(MainActivity.java:12) 
    at android.app.Activity.performCreate(Activity.java:7136) 
    at android.app.Activity.performCreate(Activity.java:7127) 
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271) 
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893) 
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) 
    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) 
    at android.os.Handler.dispatchMessage(Handler.java:106) 
    at android.os.Looper.loop(Looper.java:193) 
    at android.app.ActivityThread.main(ActivityThread.java:6669) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) 
2019-02-08 17:54:44.478 5487-5487/worshifter.com.myapplication E/AndroidRuntime: Caused by: java.lang.ClassNotFoundException: Didn't find class "androidx.constraintlayout.widget.R$styleable" on path: DexPathList[[zip file "/data/app/worshifter.com.myapplication-gnuqp7fLCQHjhJ5ZKGKRAQ==/base.apk"],nativeLibraryDirectories=[/data/app/worshifter.com.myapplication-gnuqp7fLCQHjhJ5ZKGKRAQ==/lib/x86, /system/lib]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:134)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
            ... 28 more

enter image description here

编辑发现，删除android.enableJetifier=true时，该应用程序有效。

3 个答案:

答案 0 :(得分：1)

我有同样的问题。 如您所见，它显示在日志中：let decoder = JSONDecoder() decoder.keyDecodingStrategy = .convertFromSnakeCase let responseModel = try decoder.decode(Events.self, from: data) // data from response

您应该转到项目级别public class CustomScannerActivity : Activity, DecoratedBarcodeView.ITorchListener { public const int CUSTOMIZED_REQUEST_CODE = 1; private CaptureManager capture; private DecoratedBarcodeView barcodeScannerView; private ImageButton switchFlashlightButton; private ImageButton cameraButton; private ViewfinderView viewfinderView; TextView txtViewBottomText; private bool torchOn; protected override void OnCreate(Bundle savedInstanceState) { base.OnCreate(savedInstanceState); this.ActionBar.Hide(); SetContentView(Resource.Layout.activity_custom_scannerview); barcodeScannerView = (DecoratedBarcodeView)FindViewById(Resource.Id.zxing_barcode_scanner); barcodeScannerView.SetTorchListener(this); var greenOverlay = (View)FindViewById(Resource.Id.view1); Android.Util.DisplayMetrics displayMetrics = Resources.DisplayMetrics; var scanWidth = (int)(displayMetrics.WidthPixels * 0.65); barcodeScannerView.BarcodeView.FramingRectSize = new Size(scanWidth, 100); greenOverlay.LayoutParameters.Width = scanWidth; greenOverlay.LayoutParameters.Height = scanWidth; CameraSettings settings = barcodeScannerView.BarcodeView.CameraSettings; switchFlashlightButton = (ImageButton)FindViewById(Resource.Id.switch_flashlight); cameraButton = (ImageButton)FindViewById(Resource.Id.camera); viewfinderView = (ViewfinderView)FindViewById(Resource.Id.zxing_viewfinder_view); txtViewBottomText = (TextView)FindViewById(Resource.Id.zxing_status_view); txtViewBottomText.Text = AppResources.ScanAutomatically; if (MainActivity.camPosition) { settings.RequestedCameraId = Convert.ToInt32(Android.Hardware.CameraFacing.Front); switchFlashlightButton.Visibility = ViewStates.Gone; barcodeScannerView.BarcodeView.CameraSettings = settings; barcodeScannerView.Resume(); } else { settings.RequestedCameraId = Convert.ToInt32(Android.Hardware.CameraFacing.Back); switchFlashlightButton.Visibility = ViewStates.Visible; barcodeScannerView.BarcodeView.CameraSettings = settings; barcodeScannerView.Resume(); } switchFlashlightButton.Click += (s, e) => { if (!torchOn && !MainActivity.camPosition) { barcodeScannerView.SetTorchOn(); } else { barcodeScannerView.SetTorchOff(); } torchOn = !torchOn; }; cameraButton.Click += (s, e) => { //CameraSettings settings = barcodeScannerView.BarcodeView.CameraSettings; if (barcodeScannerView.BarcodeView.IsPreviewActive) { barcodeScannerView.Pause(); } //swap the id of the camera to be used if (settings.RequestedCameraId == Convert.ToInt32(Android.Hardware.CameraFacing.Front)) { settings.RequestedCameraId = Convert.ToInt32(Android.Hardware.CameraFacing.Back); switchFlashlightButton.Visibility = ViewStates.Visible; barcodeScannerView.SetTorchOff(); MainActivity.camPosition = false; barcodeScannerView.BarcodeView.CameraSettings = settings; barcodeScannerView.Resume(); } else { settings.RequestedCameraId = Convert.ToInt32(Android.Hardware.CameraFacing.Front); switchFlashlightButton.Visibility = ViewStates.Gone; barcodeScannerView.SetTorchOff(); MainActivity.camPosition = true; barcodeScannerView.BarcodeView.CameraSettings = settings; barcodeScannerView.Resume(); } }; // if the device does not have flashlight in its camera, // then remove the switch flashlight button... if (!hasFlash()) { switchFlashlightButton.Visibility = ViewStates.Gone; } capture = new CaptureManager(this, barcodeScannerView); capture.InitializeFromIntent(Intent, savedInstanceState); capture.Decode(); } protected override void OnResume() { base.OnResume(); if (capture != null) { capture.OnResume(); } } protected override void OnPause() { base.OnPause(); if (capture != null) { capture.OnPause(); } } protected override void OnDestroy() { base.OnDestroy(); if (capture != null) { capture.OnDestroy(); } } protected override void OnSaveInstanceState(Bundle outState) { base.OnSaveInstanceState(outState); if (capture != null) { capture.OnSaveInstanceState(outState); } } //public override bool OnKeyDown([GeneratedEnum] Keycode keyCode, KeyEvent e) //{ // return barcodeScannerView.OnKeyDown(keyCode, e) || base.OnKeyDown(keyCode, e); //} private bool hasFlash() { return this.ApplicationContext.PackageManager.HasSystemFeature(Android.Content.PM.PackageManager.FeatureCameraFlash);//"android.hardware.camera.flash" } public void OnTorchOff() { } public void OnTorchOn() { } } ，并将ConstraintLayout更新为最新版本（并且最好从beta版本更新所有其他依赖项）： 默认依赖项：

Error inflating class androidx.constraintlayout.widget.ConstraintLayout
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)

实际版本：

build.gradle

我还创建了有关此问题的错误报告： https://issuetracker.google.com/issues/122892917

答案 1 :(得分：0)

解决方案非常简单，只需将库升级到build.gradle文件中的最新版本即可。

提示：使用Android Studio的linting功能将库更新为最新版本（在Windows上为左Alt + Enter ）

答案 2 :(得分：0)

我遇到了同样的错误，

我的发行版APK可以安装到模拟器，设备上，

但是它崩溃了。

我检查了build.gradle文件，该文件已更新为库的最新版本。

还删除不推荐使用的库，错误库，如下图所示。

enter image description here

然后，像以前一样启动应用程序时，我的发行版APK从未崩溃。

相关问题
最新问题