{"id":2232,"date":"2022-08-30T15:23:09","date_gmt":"2022-08-30T15:23:09","guid":{"rendered":"https:\/\/unknownerror.org\/index.php\/2014\/01\/05\/android-illegalargumentexception-component-class-x-does-not-exist-in-api-17-no-crash-in-api-8-collection-of-common-programming-errors\/"},"modified":"2022-08-30T15:23:09","modified_gmt":"2022-08-30T15:23:09","slug":"android-illegalargumentexception-component-class-x-does-not-exist-in-api-17-no-crash-in-api-8-collection-of-common-programming-errors","status":"publish","type":"post","link":"https:\/\/unknownerror.org\/index.php\/2022\/08\/30\/android-illegalargumentexception-component-class-x-does-not-exist-in-api-17-no-crash-in-api-8-collection-of-common-programming-errors\/","title":{"rendered":"Android : IllegalArgumentException: “Component class X does not exist” in API 17 (no crash in API 8)-Collection of common programming errors"},"content":{"rendered":"

My emulators :<\/p>\n

<\/p>\n

When I launch the tablet emulator I get :<\/p>\n

FATAL EXCEPTION: main\njava.lang.IllegalArgumentException: Component class TriggerMonitoringBootReceiver does not exist in di.k23b.hw3\n    at android.os.Parcel.readException(Parcel.java:1429)\n    at android.os.Parcel.readException(Parcel.java:1379)\n    at android.content.pm.IPackageManager$Stub$Proxy.setComponentEnabledSetting(IPackageManager.java:2561)\n    at android.app.ApplicationPackageManager.setComponentEnabledSetting(ApplicationPackageManager.java:1250)\n    at di.k23b.hw3.receivers.TriggerMonitoringBootReceiver.enable(TriggerMonitoringBootReceiver.java:81)\n    at di.k23b.hw3.receivers.TriggerMonitoringBootReceiver.enable(TriggerMonitoringBootReceiver.java:86)\n    at di.k23b.hw3.activities.SettingsActivity.onSharedPreferenceChanged(SettingsActivity.java:192)\n    at android.app.SharedPreferencesImpl$EditorImpl.notifyListeners(SharedPreferencesImpl.java:475)\n    at android.app.SharedPreferencesImpl$EditorImpl.apply(SharedPreferencesImpl.java:385)\n    at android.preference.Preference.tryCommit(Preference.java:1349)\n    at android.preference.Preference.persistBoolean(Preference.java:1615)\n    at android.preference.TwoStatePreference.setChecked(TwoStatePreference.java:83)\n    at android.preference.TwoStatePreference.onClick(TwoStatePreference.java:69)\n    at android.preference.Preference.performClick(Preference.java:949)\n    at android.preference.PreferenceScreen.onItemClick(PreferenceScreen.java:215)\n    at android.widget.AdapterView.performItemClick(AdapterView.java:298)\n    at android.widget.AbsListView.performItemClick(AbsListView.java:1100)\n    at android.widget.AbsListView$PerformClick.run(AbsListView.java:2749)\n    at android.widget.AbsListView$1.run(AbsListView.java:3423)\n    at android.os.Handler.handleCallback(Handler.java:725)\n    at android.os.Handler.dispatchMessage(Handler.java:92)\n    at android.os.Looper.loop(Looper.java:137)\n    at android.app.ActivityThread.main(ActivityThread.java:5041)\n    at java.lang.reflect.Method.invokeNative(Native Method)\n    at java.lang.reflect.Method.invoke(Method.java:511)\n    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)\n    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)\n    at dalvik.system.NativeStart.main(Native Method)\n<\/code><\/pre>\n
When I launch the froyo emulator all is fine (EDIT<\/strong> : no it is not – the receiver is not enabled BUT still there is no crash<\/strong><\/em>).
\nIs it a known issue or something ?<\/p>\n
Manifest :<\/p>\n
\n\n    \n    \n        \n            \n                \n                \n            \n        \n        \n        \n        \n        \n        \n            \n                \n            \n        \n        \n            \n                \n                \n            \n        \n    \n\n<\/code><\/pre>\n
Relevant parts from the receiver (WIP !) :<\/p>\n
private static void enable(Context context, boolean enable, String className) {\n    PackageManager pacman = context.getPackageManager();\n    final ComponentName componentName = new ComponentName(context, className);\n    final int state = (enable) ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED\n            : PackageManager.COMPONENT_ENABLED_STATE_DISABLED;\n    pacman.setComponentEnabledSetting(componentName, state,  \/\/ line 81\n            PackageManager.DONT_KILL_APP);\n}\n\npublic static void enable(Context baseContext, boolean enable) {\n    enable(baseContext, enable,                 \/\/ line 86\n            TriggerMonitoringBootReceiver.class.getSimpleName());\n}\n<\/code><\/pre>\n
And in SettingsActivity:<\/p>\n
@Override\npublic void onSharedPreferenceChanged(SharedPreferences sp, String key) {\n    if (MASTER_ENABLE.equals(key)) {\n        TriggerMonitoringBootReceiver.enable(getBaseContext(),        \/\/ line 192\n                sp.getBoolean(key, false));\n        Toast.makeText(getApplicationContext(),\n                \"CB: \" + sp.getBoolean(key, false), Toast.LENGTH_SHORT)\n                .show();\n    }\n}\n<\/code><\/pre>\n
EDIT<\/strong><\/em> : all clear now, using ComponentName(Context pkg, Class cls)<\/code>– as for the difference in the APIs :
\nCalls to PackageManager.setComponentEnabledSetting will now throw an IllegalArgumentException if the given component class name does not exist in the application’s manifest.<\/p>\n
    \n
  1. \n
    TriggerMonitoringBootReceiver.class.getSimpleName();\n<\/code><\/pre>\n
    and package<\/p>\n
    PackageManager pacman = context.getPackageManager();\n<\/code><\/pre>\n
    which together give<\/p>\n
    di.k23b.hw3.TriggerMonitoringBootReceiver\n<\/code><\/pre>\n
    so you are missing “\/receivers\/” folder prefix in class name<\/p>\n<\/li>\n<\/ol>\n
    Originally posted 2014-01-05 09:21:10. <\/small><\/p>","protected":false},"excerpt":{"rendered":"
    My emulators : When I launch the tablet emulator I get : FATAL EXCEPTION: main java.lang.IllegalArgumentException: Component class TriggerMonitoringBootReceiver does not exist in di.k23b.hw3 at android.os.Parcel.readException(Parcel.java:1429) at android.os.Parcel.readException(Parcel.java:1379) at android.content.pm.IPackageManager$Stub$Proxy.setComponentEnabledSetting(IPackageManager.java:2561) at android.app.ApplicationPackageManager.setComponentEnabledSetting(ApplicationPackageManager.java:1250) at di.k23b.hw3.receivers.TriggerMonitoringBootReceiver.enable(TriggerMonitoringBootReceiver.java:81) at di.k23b.hw3.receivers.TriggerMonitoringBootReceiver.enable(TriggerMonitoringBootReceiver.java:86) at di.k23b.hw3.activities.SettingsActivity.onSharedPreferenceChanged(SettingsActivity.java:192) at android.app.SharedPreferencesImpl$EditorImpl.notifyListeners(SharedPreferencesImpl.java:475) at android.app.SharedPreferencesImpl$EditorImpl.apply(SharedPreferencesImpl.java:385) at android.preference.Preference.tryCommit(Preference.java:1349) at android.preference.Preference.persistBoolean(Preference.java:1615) at android.preference.TwoStatePreference.setChecked(TwoStatePreference.java:83) at android.preference.TwoStatePreference.onClick(TwoStatePreference.java:69) at android.preference.Preference.performClick(Preference.java:949) at android.preference.PreferenceScreen.onItemClick(PreferenceScreen.java:215) at […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2232","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/2232","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/comments?post=2232"}],"version-history":[{"count":0,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/posts\/2232\/revisions"}],"wp:attachment":[{"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/media?parent=2232"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/categories?post=2232"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/unknownerror.org\/index.php\/wp-json\/wp\/v2\/tags?post=2232"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}