我目前正在尝试创建COSU应用。我想将用户锁定在应用程序中,并禁用所有功能,例如主页按钮,菜单按钮,后退按钮,工具栏等。我在这里遵循了指南:https : //developer.android.com/work/cosu.html#cosu-solutions
我遇到的问题是我收到“没有活动的管理员”错误。我不知道如何使我活跃。是否有通话意图会弹出此提示?我直接按照开发人员的指示进行操作,但是缺少一些未发布在网站上的详细信息。
造成原因:java.lang.SecurityException:在android.os.Parcel.readException(Parcel.java:1693)处没有活动的管理员ComponentInfo {android.example.stage / com.example.app.framework.utilities.kiosk.DeviceAdminReceiver} android.app.admin.IDevicePolicyManager $ Stub $ Proxy.setUserRestriction(IDevicePolicyManager.java:7977)上的android.os.Parcel.readException(Parcel.java:1646),android.app.admin.DevicePolicyManager.addUserRestriction(DevicePolicyManager.java:6296),位于android.example.activity.RegistrationActivity.setUserRestriction(RegistrationActivity.java:320),位于android.example.activity.RegistrationActivity.setDefaultCosuPolicies(RegistrationActivity.java:274),位于android.example.activity.RegistrationActivity.onCreate(RegistrationActivity.java) :110)在android.app.Activity.performCreate(Activity.java:6942)在android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1126)在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2880)在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2988)在android.app.ActivityThread.-wrap14(ActivityThread.java)在android.app .ActivityThread $ H.handleMessage(ActivityThread.java:1631)在android.os.Handler.dispatchMessage(Handler.java:102)at android.os.Looper.loop(Looper.java:154)at android.app.ActivityThread.main(ActivityThread.java:6682)at com.android的java.lang.reflect.Method.invoke(Native Method) .internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1520)位于com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)154),位于android.app.ActivityThread.main(ActivityThread.java:6682),位于com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:的java.lang.reflect.Method.invoke(本机方法)处。 1520),位于com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)154),位于android.app.ActivityThread.main(ActivityThread.java:6682),位于com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:的java.lang.reflect.Method.invoke(本机方法)处。 1520),位于com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)处com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1520)处调用(本机方法)在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1410)处com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:1520)处调用(本机方法)
这是我的实现。
在OnCreate()中
mAdminComponentName = DeviceAdminReceiver.getComponentName(this);
mDevicePolicyManager = (DevicePolicyManager) getSystemService(
Context.DEVICE_POLICY_SERVICE);
mPackageManager = getPackageManager();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
setDefaultCosuPolicies(true);
}
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在onStart()中
// start lock task mode if it's not already active
ActivityManager am = (ActivityManager) getSystemService(
Context.ACTIVITY_SERVICE);
// ActivityManager.getLockTaskModeState api is not available in pre-M.
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
if (!am.isInLockTaskMode()) {
startLockTask();
}
}
} else {
if (am.getLockTaskModeState() ==
ActivityManager.LOCK_TASK_MODE_NONE) {
startLockTask();
}
}
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我的助手方法
@TargetApi(Build.VERSION_CODES.M)
private void setDefaultCosuPolicies(boolean active) {
// set user restrictions
setUserRestriction(UserManager.DISALLOW_SAFE_BOOT, active);
setUserRestriction(UserManager.DISALLOW_FACTORY_RESET, active);
setUserRestriction(UserManager.DISALLOW_ADD_USER, active);
setUserRestriction(UserManager.DISALLOW_MOUNT_PHYSICAL_MEDIA, active);
setUserRestriction(UserManager.DISALLOW_ADJUST_VOLUME, active);
// disable keyguard and status bar
mDevicePolicyManager.setKeyguardDisabled(mAdminComponentName, active);
mDevicePolicyManager.setStatusBarDisabled(mAdminComponentName, active);
// enable STAY_ON_WHILE_PLUGGED_IN
enableStayOnWhilePluggedIn(active);
// set System Update policy
if (active){
mDevicePolicyManager.setSystemUpdatePolicy(mAdminComponentName,
SystemUpdatePolicy.createWindowedInstallPolicy(60,120));
} else {
mDevicePolicyManager.setSystemUpdatePolicy(mAdminComponentName, null);
}
// set this Activity as a lock task package
mDevicePolicyManager.setLockTaskPackages(mAdminComponentName,
active ? new String[]{getPackageName()} : new String[]{});
IntentFilter intentFilter = new IntentFilter(Intent.ACTION_MAIN);
intentFilter.addCategory(Intent.CATEGORY_HOME);
intentFilter.addCategory(Intent.CATEGORY_DEFAULT);
if (active) {
// set Cosu activity as home intent receiver so that it is started
// on reboot
mDevicePolicyManager.addPersistentPreferredActivity(
mAdminComponentName, intentFilter, new ComponentName(
getPackageName(), RegistrationActivity.class.getName()));
} else {
mDevicePolicyManager.clearPackagePersistentPreferredActivities(
mAdminComponentName, getPackageName());
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void setUserRestriction(String restriction, boolean disallow) {
if (disallow) {
mDevicePolicyManager.addUserRestriction(mAdminComponentName,
restriction);
} else {
mDevicePolicyManager.clearUserRestriction(mAdminComponentName,
restriction);
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void enableStayOnWhilePluggedIn(boolean enabled) {
if (enabled) {
mDevicePolicyManager.setGlobalSetting(
mAdminComponentName,
Settings.Global.STAY_ON_WHILE_PLUGGED_IN,
Battery_PLUGGED_ANY);
} else {
mDevicePolicyManager.setGlobalSetting(
mAdminComponentName,
Settings.Global.STAY_ON_WHILE_PLUGGED_IN, DONT_STAY_ON);
}
}
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我的device_admin.xml
<?xml version="1.0" encoding="utf-8"?>
<device-admin>
<uses-policies>
<limit-password/>
<watch-login/>
<reset-password/>
<force-lock/>
<wipe-data/>
<expire-password/>
<encrypted-storage/>
<disable-camera/>
<disable-keyguard-features/>
</uses-policies>
</device-admin>
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我在AndroidManifest.xml中的接收器
<receiver
android:name="com.example.app.framework.utilities.kiosk.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"/>
<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>
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MyDeviceAdminReceiver.kt:class MyDeviceAdminReceiver : DeviceAdminReceiver()
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res/xml/device_admin.xml:
<device-admin xmlns:android="http://schemas.android.com/apk/res/android">
<uses-policies>
<!-- Put whatever policies you need below -->
<limit-password />
</uses-policies>
</device-admin>
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AndroidManifest.xml:
<receiver android:name=".MyDeviceAdminReceiver"
android:permission="android.permission.BIND_DEVICE_ADMIN">
<meta-data android:name="android.app.device_admin"
android:resource="@xml/device_admin" />
<intent-filter>
<action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
</intent-filter>
</receiver>
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adb shell dpm set-device-owner com.example.myapp/.MyDeviceAdminReceiver
String[] ALLOWED_PACKAGES = {getPackageName()};
DevicePolicyManager dpm = (DevicePolicyManager) getApplicationContext().getSystemService(Context.DEVICE_POLICY_SERVICE);
ComponentName adminName = new ComponentName(getApplicationContext(), MyDeviceAdminReceiver.class);
dpm.setLockTaskPackages(adminName, ALLOWED_PACKAGES);
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val dpm = getSystemService(Context.DEVICE_POLICY_SERVICE) as DevicePolicyManager
if (dpm.isLockTaskPermitted(packageName)) {
startLockTask()
}
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