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android – 从Preference Activity启动Activity导致Permission Denial Exception

 5 years ago
source link: https://codeday.me/bug/20190112/519034.html?amp%3Butm_medium=referral
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我在这里遇到了一些问题.我想要做的是从PreferenceActivity中启动一个Activity.所以我的preference.xml保存了首选项布局,如下所示：

<Preference android:title="Launch Activity" >
   <intent android:action="org.momo.SOME_ACTIVITY" />
</Preference>

清单知道我想要启动的活动..

<activity android:label="@string/app_name" android:name="SomeActivity">
        <intent-filter>
            <category android:name="android.intent.category.DEFAULT" />

            <action android:name="org.momo.SOME_ACTIVITY" />
        </intent-filter>
    </activity>

猜猜看,当我想启动它时,我得到一个安全例外(Permission Denial).我错过了什么吗？我对意图的理解仍然有点不完整,但我认为它必须以这种方式工作.

感谢您的任何帮助！

制作一个意图过滤器似乎是一种略微迂回的方式.这是一种更简单的方法： 
<PreferenceScreen
    android:title="@string/settings.title" 
    android:summary="@string/settings.summary">
    <intent
        android:targetPackage="com.companyname.appname"
        android:targetClass="com.companyname.appname.classname"/>
</PreferenceScreen>

翻译自：https://stackoverflow.com/questions/2077436/launch-activity-from-preference-activity-causes-permission-denial-exception


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