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mono0926 / barcode_scan2

[reborned barcode_scan] A flutter plugin for reading 2D barcodes and QR codes.
https://pub.dev/packages/barcode_scan2
MIT License
87 stars 78 forks source link

[Bug] ClassCastException running Android example #92

Open mauriziopinotti opened 2 months ago

mauriziopinotti commented 2 months ago

Describe the bug Running the Android example causes a ClassCastException.

To Reproduce Steps to reproduce the behavior:

  1. Clone the project
  2. Run flutter run on an Android device
  3. See error

Expected behavior Android app should start.

Screenshots N/A.

Logs

E/AndroidRuntime(28799): FATAL EXCEPTION: main
E/AndroidRuntime(28799): Process: de.mintware.example, PID: 28799
E/AndroidRuntime(28799): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{de.mintware.example/android.app.Application}: java.lang.ClassCastException: android.app.Application cannot be cast to android.app.Activity
E/AndroidRuntime(28799):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4047)
E/AndroidRuntime(28799):        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:4322)
E/AndroidRuntime(28799):        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:103)
E/AndroidRuntime(28799):        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:139)
E/AndroidRuntime(28799):        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:96)
E/AndroidRuntime(28799):        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2685)
E/AndroidRuntime(28799):        at android.os.Handler.dispatchMessage(Handler.java:106)
E/AndroidRuntime(28799):        at android.os.Looper.loopOnce(Looper.java:230)
E/AndroidRuntime(28799):        at android.os.Looper.loop(Looper.java:319)
E/AndroidRuntime(28799):        at android.app.ActivityThread.main(ActivityThread.java:8919)
E/AndroidRuntime(28799):        at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(28799):        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:578)
E/AndroidRuntime(28799):        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1103)
E/AndroidRuntime(28799): Caused by: java.lang.ClassCastException: android.app.Application cannot be cast to android.app.Activity
E/AndroidRuntime(28799):        at android.app.AppComponentFactory.instantiateActivity(AppComponentFactory.java:95)
E/AndroidRuntime(28799):        at androidx.core.app.CoreComponentFactory.instantiateActivity(CoreComponentFactory.java:44)
E/AndroidRuntime(28799):        at android.app.Instrumentation.newActivity(Instrumentation.java:1378)
E/AndroidRuntime(28799):        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:4034)
E/AndroidRuntime(28799):        ... 12 more

Environment (please complete the following information):

Additional context This commit broke it: https://github.com/mono0926/barcode_scan2/commit/c589b6feee5434b1b4d71f565c4abb12dfd347c2 as android:name="${applicationName}" should be an attribute of <application>, not <activity>.

The correct syntax is:

diff --git a/example/android/app/src/main/AndroidManifest.xml b/example/android/app/src/main/AndroidManifest.xml
index b14b12f..b320208 100644
--- a/example/android/app/src/main/AndroidManifest.xml
+++ b/example/android/app/src/main/AndroidManifest.xml
@@ -1,6 +1,6 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="de.mintware.example">
-  <application android:label="example" android:icon="@mipmap/ic_launcher">
-    <activity android:name="${applicationName}" android:exported="true" android:launchMode="singleTop" android:theme="@style/LaunchTheme" android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode" android:hardwareAccelerated="true" android:windowSoftInputMode="adjustResize">
+  <application android:name="${applicationName}" android:label="example" android:icon="@mipmap/ic_launcher">
+    <activity android:name=".MainActivity" android:exported="true" android:launchMode="singleTop" android:theme="@style/LaunchTheme" android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode" android:hardwareAccelerated="true" android:windowSoftInputMode="adjustResize">
       <!-- Specifies an Android theme to apply to this Activity as soon as
                  the Android process has started. This theme is visible to the user
                  while the Flutter UI initializes. After that, this theme continues