preferenceScreen - ＆LT;意向... /＆GT; - 例外 - FLAG_ACTIVITY_NEW_TASK [英] PreferenceScreen - <intent .../> - Exception - FLAG_ACTIVITY_NEW_TASK

问题描述

我是新的Andr​​oid的发展。

I am new at android developing.

该项目即将实施的AbstractAccountAuthenticator与AbstractThreadedSyncAdapter同步与内容供应商的服务器上的特定数据。

The project is about implementing an AbstractAccountAuthenticator with an AbstractThreadedSyncAdapter to sync certain data on a server with a content provider.

我做的一切，既增加账户和同步是没有任何问题运行。

I made everything and both adding accounts and syncing is running without any problems.

现在我已经尝试添加preference屏幕仿如建议在android参考通过XML（搜索AbstractAccountAuthenticator，它是有解释）是这样的：

Now I've tried to add a Preference-Screen just like suggested in the android reference (search for AbstractAccountAuthenticator, it is explained there) via xml like this:

autenticator.xml：

<account-authenticator xmlns:android="http://schemas.android.com/apk/res/android"
    android:accountType="typeOfAuthenticator"
    android:icon="@drawable/icon"
    android:smallIcon="@drawable/miniIcon"
    android:label="@string/label"
    android:accountPreferences="@xml/account_preferences"
 />

在preference屏幕-XML看​​起来是这样的：

The Preference-Screen-xml looks like this:

account_ preferences.xml：

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
 <PreferenceCategory android:title="@string/pref_cat_general">
  <PreferenceScreen android:key="@string/pref_cat_scr_keygen" android:title="@string/pref_cat_scr_keygen_title" android:summary="@string/pref_cat_scr_keygen_summary">
   <intent android:action="android.intent.action.VIEW" android:targetPackage="com.android.clean" android:targetClass="com.android.clean.KeygenAct" />
  </PreferenceScreen>
 </PreferenceCategory>
</PreferenceScreen>

该屏幕promted应该的，但是，这就是问题：当我点击了preferenceScreen它导致系统崩溃的意图（无论是在模拟器和我的HTC-欲望） 。

The screen is promted how it should be, but and that is the problem: When I click on the PreferenceScreen with the intent it leads to a crash of the system (both in the emulator and my HTC-Desire).

LogCat中说：

ERROR / AndroidRuntime（18754）：   android.util.AndroidRuntimeException：   调用startActivity（）禁区外   一个活动的情况下需要   FLAG_ACTIVITY_NEW_TASK标志。这是   真的是你想要的吗？

ERROR/AndroidRuntime(18754): android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?

（全 LogCat中的引擎收录）

清单，其中活性被定义的下面的部分：

Here the part of the manifest, where the activity is defined:

<activity android:name=".KeygenAct">
    <intent-filter>
     <action android:name="android.intent.action.VIEW" />
     <category android:name="android.intent.category.DEFAULT" />
    </intent-filter>
</activity>

整个测试 - code（这是我的项目的要领来发现问题）被发现在谷歌code（HTTP：//$c$c.google.com/p/cleanproject /来源/浏览/）（Eclipse的项目）

The whole test-code (it is my project on the essentials to find the problem) is to find at googlecode (http://code.google.com/p/cleanproject/source/browse/) (Eclipse-Project)

感谢你已经为你的帮助， Esentian

Thank you already for your help, Esentian

PS：凯基是不是一个密钥发生器，它意味着更多key_general。有点inartfully EX pressed;）

p.s.: keygen is not a key generator, it means more key_general. A bit inartfully expressed ;)

推荐答案

我有同样的问题，刚刚发现，如果你改变了preferences为：

i had the same problem and have just found out, that if you change your preferences to:

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
 <PreferenceCategory android:title="@string/pref_cat_general">
 </PreferenceCategory>
  <PreferenceScreen android:key="@string/pref_cat_scr_keygen" android:title="@string/pref_cat_scr_keygen_title" android:summary="@string/pref_cat_scr_keygen_summary">
   <intent android:action="android.intent.action.VIEW" android:targetPackage="com.android.clean" android:targetClass="com.android.clean.KeygenAct" />
  </PreferenceScreen>
</PreferenceScreen>

然后按预期工作。这是奇怪，因为我希望preferenceCategory组项目作为其子......为什么它会如此不相关的（？）错误造成的？

Then it works as expected. This is weird because I would expect PreferenceCategory to group items as its children... And why does it result with such unrelated (?) error?

这篇关于preferenceScreen - ＆LT;意向... /＆GT; - 例外 - FLAG_ACTIVITY_NEW_TASK的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！