Android：IllegalArgumentException：API 17中的“组件类X不存在”（API 8中没有崩溃）

Question

我的模拟器：

当我启动平板电脑模拟器时，我得到：

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 android.widget.AdapterView.performItemClick(AdapterView.java:298)
    at android.widget.AbsListView.performItemClick(AbsListView.java:1100)
    at android.widget.AbsListView$PerformClick.run(AbsListView.java:2749)
    at android.widget.AbsListView$1.run(AbsListView.java:3423)
    at android.os.Handler.handleCallback(Handler.java:725)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:5041)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
    at dalvik.system.NativeStart.main(Native Method)

当我启动froyo模拟器时一切都很好（编辑：不，它不是 - 接收器未启用但仍然没有崩溃）。 这是一个已知的问题还是什么？

清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="di.k23b.hw3"
    android:permission="android.permission.RECEIVE_BOOT_COMPLETED"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="17" />
    <application android:allowBackup="true" android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" android:theme="@style/AppTheme" >
        <activity
            android:name="di.k23b.hw3.activities.MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="di.k23b.hw3.activities.SettingsActivity"
            android:label="@string/title_activity_settings" >
        </activity>
        <receiver
            android:name="di.k23b.hw3.receivers.TriggerMonitoringBootReceiver"
            android:enabled="false" >
            <intent-filter>
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>
        </receiver>
        <receiver
            android:name="di.k23b.hw3.receivers.BatteryMonitoringReceiver"
            android:enabled="false"/>
    </application>
</manifest>

来自接收器的相关部件（WIP！）：

private static void enable(Context context, boolean enable, String className) {
    PackageManager pacman = context.getPackageManager();
    final ComponentName componentName = new ComponentName(context, className);
    final int state = (enable) ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
            : PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
    pacman.setComponentEnabledSetting(componentName, state,  // line 81
            PackageManager.DONT_KILL_APP);
}

public static void enable(Context baseContext, boolean enable) {
    enable(baseContext, enable,                 // line 86
            TriggerMonitoringBootReceiver.class.getSimpleName());
}

在SettingsActivity中：

@Override
public void onSharedPreferenceChanged(SharedPreferences sp, String key) {
    if (MASTER_ENABLE.equals(key)) {
        TriggerMonitoringBootReceiver.enable(getBaseContext(),        // line 192
                sp.getBoolean(key, false));
        Toast.makeText(getApplicationContext(),
                "CB: " + sp.getBoolean(key, false), Toast.LENGTH_SHORT)
                .show();
    }
}

---

编辑：现在全部清楚，使用ComponentName(Context pkg, Class<?> cls)-作为API的差异：

如果应用程序的清单中不存在给定的组件类名，则调用PackageManager.setComponentEnabledSetting现在将抛出IllegalArgumentException。 - from the Android documentation

Answer 1

TriggerMonitoringBootReceiver.class.getSimpleName();

和包

PackageManager pacman = context.getPackageManager();

这一起给了

di.k23b.hw3.TriggerMonitoringBootReceiver

所以你在类名中缺少“/ receivers /”文件夹前缀

Answer 2

只是总结一下这个帖子中的信息。 使用构造函数ComponentName(Context pkg, Class<?> cls)。 此外，需要在清单中指定组件名称。参见this link的JELLYBEAN。 Calls to PackageManager.setComponentEnabledSetting will now throw an IllegalArgumentException if the given component class name does not exist in the application's manifest.

Answer 3

如果您使用AndroidAnnotations，请改用重写的类名。

// CORRECT class definition.
ComponentName receiver = new ComponentName(context, NotificationPublisher_.class);

但，

// THIS WILL GIVE YOU CRASH.
ComponentName receiver = new ComponentName(context, NotificationPublisher.class);