Question

我正在开发一个可以屏幕固定的应用程序，即公司拥有的单一用途又称锁定任务模式。

如果我把它钉住然后：

我关闭它（杀死它）然后我再次启动它
或在android studio中进行一些代码修改后再执行Run
在引脚后重新启动并取消固定

我收到以下错误：

[homtom-ht3_pro-0123456789ABCDEF]: E/AndroidRuntime: FATAL EXCEPTION: main
                                                     Process: com.xx.yyy, PID: 7928
                                                     java.lang.RuntimeException: Unable to start activity ComponentInfo{com.xx.yyy/com.xx.yyy.activities.LauncherActivity}: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.xx.yyy/com.xx.yy.activities.StartActivity}; have you declared this activity in your AndroidManifest.xml?
                                                         at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2534)
                                                         at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2614)
                                                         at android.app.ActivityThread.access$800(ActivityThread.java:178)
                                                         at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1470)
                                                         at android.os.Handler.dispatchMessage(Handler.java:111)
                                                         at android.os.Looper.loop(Looper.java:194)
                                                         at android.app.ActivityThread.main(ActivityThread.java:5643)
                                                         at java.lang.reflect.Method.invoke(Native Method)
                                                         at java.lang.reflect.Method.invoke(Method.java:372)
                                                         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960)
                                                         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
                                                      Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.xx.yyy/com.xx.yyy.activities.StartActivity}; have you declared this activity in your AndroidManifest.xml?
                                                         at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1788)
                                                         at android.app.Instrumentation.execStartActivity(Instrumentation.java:1512)
                                                         at android.app.Activity.startActivityForResult(Activity.java:3809)
                                                         at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:50)
                                                         at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:79)
                                                         at android.app.Activity.startActivityForResult(Activity.java:3760)
                                                         at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:859)
                                                         at android.app.Activity.startActivity(Activity.java:4090)
                                                         at android.app.Activity.startActivity(Activity.java:4058)
                                                         at com.xx.yyy.activities.LauncherActivity.onCreate(LauncherActivity.java:16)
                                                         at android.app.Activity.performCreate(Activity.java:6099)
                                                         at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1112)
                                                         at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2481)
                                                         at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2614) 
                                                         at android.app.ActivityThread.access$800(ActivityThread.java:178) 
                                                         at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1470) 
                                                         at android.os.Handler.dispatchMessage(Handler.java:111) 
                                                         at android.os.Looper.loop(Looper.java:194) 
                                                         at android.app.ActivityThread.main(ActivityThread.java:5643) 
                                                         at java.lang.reflect.Method.invoke(Native Method) 
                                                         at java.lang.reflect.Method.invoke(Method.java:372) 
                                                         at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:960) 
                                                         at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)

这是我的清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.xx.yyy">



    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <receiver
            android:name=".receivers.DeviceAdminReceiver"
            android:description="@string/app_name"
            android:label="@string/app_name"
            android:permission="android.permission.BIND_DEVICE_ADMIN">
            <meta-data
                android:name="android.app.device_admin"
                android:resource="@xml/device_admin_receiver" />

            <intent-filter>
                <action android:name="android.intent.action.DEVICE_ADMIN_ENABLED" />
                <action android:name="android.intent.action.PROFILE_PROVISIONING_COMPLETE" />
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>
        </receiver>

        <activity android:name=".activities.LauncherActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <activity android:name=".activities.StartActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.HOME" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>

    </application>

</manifest>

如果我没有固定应用程序，我可以重启/升级并运行我想要的次数。

好处是甚至无法卸载应用程序，因为它已被配置为设备所有者，因此，除非出厂重置，否则无法卸载它。

我不明白应用程序重启后我的活动有可能消失。可以是与intent category or action相关的内容吗？

如果有其他人遇到此行为，可以告诉我，我将向错误报告网站提交问题。

感谢。

编辑18/3

我想也许这种情况正在发生，因为在某个时刻，我杀死了home category activity，在我的情况下是缺少的StartActivity，并且即使我重新启动应用程序也不会重新启动它。

Answer 1

在我的COSU禁用固定实现中找到解决方案，我正在做：

PackageManager mPackageManager = getApplicationContext().getPackageManager();;
mPackageManager.setComponentEnabledSetting(
        new ComponentName(getApplicationContext(), StartActivity.class),
        PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
        PackageManager.DONT_KILL_APP);

禁用设备启动时的固定，但这实际上禁用了指定的组件。

正确的实施方式是：

PackageManager mPackageManager = getApplicationContext().getPackageManager();;
mPackageManager.setComponentEnabledSetting(
        new ComponentName(getApplicationContext(), StartActivity.class),
        PackageManager.COMPONENT_ENABLED_STATE_DEFAULT,
        PackageManager.DONT_KILL_APP);

COSU：在pin之后再找不到Activity，然后重新启动

1 个答案: