DeviceAdminReceiver永远不会被调用

Question

我成功地获得了管理员特权--一切正常。唯一的问题是，DeviceAdminReceiver从未被调用，我正在尝试检查失败密码的数量。

public class MyAdminReceiver extends DeviceAdminReceiver {

void showToast(Context context, CharSequence msg) {
    Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();
}

@Override
public void onPasswordFailed(Context context, Intent intent) {
    showToast(context, "Sample Device Admin: pw failed");
    Log.d("Hello", "onPasswordFailed");
    DevicePolicyManager mgr = (DevicePolicyManager)context.getSystemService(Context.DEVICE_POLICY_SERVICE);
    int no = mgr.getCurrentFailedPasswordAttempts();


    if (no >= 3) {
        showToast(context, "3 failure");
        mgr.resetPassword("111111", DevicePolicyManager.RESET_PASSWORD_REQUIRE_ENTRY);
        //mgr.lockNow();
    }
}


@Override
public void onEnabled(Context context, Intent intent) {
    showToast(context, "Sample Device Admin: enabled");
}

@Override
public CharSequence onDisableRequested(Context context, Intent intent) {
    return "This is an optional message to warn the user about disabling.";
}

@Override
public void onDisabled(Context context, Intent intent) {
    showToast(context, "Sample Device Admin: disabled");
}

@Override
public void onPasswordChanged(Context context, Intent intent) {
    showToast(context, "Sample Device Admin: pw changed");
}



@Override
public void onPasswordSucceeded(Context context, Intent intent) {
    showToast(context, "Sample Device Admin: pw succeeded");
}

}

我也在我的舱单上声明了

 <receiver
        android:name=".MyAdminReceiver"
        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>

和device_admin

<?xml version="1.0" encoding="utf-8"?>
<device-admin xmlns:android="http://schemas.android.com/apk/res/android">
    <uses-policies>
        <limit-password />
        <watch-login />
        <reset-password />
        <force-lock />
        <wipe-data />
        <expire-password />
        <encrypted-storage />
        <disable-camera />
    </uses-policies>
</device-admin>

有人能给我提个建议吗?原因是什么？谢谢。

Answer 1

也许改变

<intent-filter>
    <action android:name="android.app.action.DEVICE_ADMIN_ENABLED"/>
</intent-filter>

至

<intent-filter>
    <action android:name="android.app.action.DEVICE_ADMIN_ENABLED"/>
    <action android:name="android.app.action.ACTION_PASSWORD_FAILED"/>
    <action android:name="android.app.action.ACTION_PASSWORD_SUCCEEDED"/>
</intent-filter>