blocks|key|793335|text|我相信<intent>标签必须在<Preference>中，而不是<PreferenceScreen>中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|793336|<PreferenceCategory+
++++android:title="@string/titleEtcSetup">
++++<Preference
++++++++android:key="renameCourses"
++++++++android:title="@string/titleRenameCourses"
++++++++android:summary="@string/textRenameDisplayedCoursesNames">
++++++++<intent
+++++++++++++android:action="android.intent.action.VIEW"
+++++++++++++android:targetPackage="my.notifier.ui"
+++++++++++++android:targetClass="my.notifier.ui.EditCoursesNamesActivity"+/>+++++++++
++++</Preference>
.....
</PreferenceCategory>|code-block|syntax|javascript|793337|entityMap^0|3|8|G|C|X|I|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|T|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|U|8|@]|D|@]|E|$]]]|L|$]]

I believe <code>&lt;intent&gt;</code> tag must be inside <code>&lt;Preference&gt;</code>, not <code>&lt;PreferenceScreen&gt;</code>.

<pre><code>&lt;PreferenceCategory 
 android:title="@string/titleEtcSetup"&gt;
 &lt;Preference
 android:key="renameCourses"
 android:title="@string/titleRenameCourses"
 android:summary="@string/textRenameDisplayedCoursesNames"&gt;
 &lt;intent
 android:action="android.intent.action.VIEW"
 android:targetPackage="my.notifier.ui"
 android:targetClass="my.notifier.ui.EditCoursesNamesActivity" /&gt; 
 &lt;/Preference&gt;
.....
&lt;/PreferenceCategory&gt;
</code></pre>

blocks|key|793386|text|当我遇到这个问题时，是因为我为我的活动创建了一个子包。当我将它移到根包中时，首选项屏幕可以启动它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|793387|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

When I had this problem it was because I had made a sub-package for my activities. When I moved it into the root package the Preference screen could launch it.

blocks|key|793439|text|我也有同样的问题。我只需在我的AndroidManifest.xml中声明该操作，就可以实现这一点：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|793440|<manifest+xmlns:android="http://schemas.android.com/apk/res/android"
++++++package="com.example.myapp"+android:versionName="1.3"+android:versionCode="4">

...

++++<activity+android:name=".activities.MyActivity"+
++++++++++++++android:label="@string/my_activity_title"
++++++++++++++android:theme="@android:style/Theme.Black.NoTitleBar">
++++++++<intent-filter>
+++++++++++<action+android:name="com.example.myapp.activities.MyActivity"+/>
+++++++++++<category+android:name="android.intent.category.DEFAULT"+/>
+++++++</intent-filter>
++++</activity>|code-block|syntax|javascript|793441|然后在我的首选项xml文件中：|793442|<PreferenceCategory
++++++++android:title="@string/my_activity_title">
++++<PreferenceScreen
++++++++android:title="@string/my_activity_title"+
++++++++android:summary="@string/my_activity_title">
++++++++<intent+android:action="com.example.myapp.activities.MyActivity"/>
++++</PreferenceScreen>
</PreferenceCategory>|793443|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I was having the same issue. I got this working by only declaring the action in my AndroidManifest.xml, as such:

<pre><code>&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.example.myapp" android:versionName="1.3" android:versionCode="4"&gt;

...

 &lt;activity android:name=".activities.MyActivity" 
 android:label="@string/my_activity_title"
 android:theme="@android:style/Theme.Black.NoTitleBar"&gt;
 &lt;intent-filter&gt;
 &lt;action android:name="com.example.myapp.activities.MyActivity" /&gt;
 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
 &lt;/intent-filter&gt;
 &lt;/activity&gt;
</code></pre>

Then in my Preferences xml file:

<pre><code>&lt;PreferenceCategory
 android:title="@string/my_activity_title"&gt;
 &lt;PreferenceScreen
 android:title="@string/my_activity_title" 
 android:summary="@string/my_activity_title"&gt;
 &lt;intent android:action="com.example.myapp.activities.MyActivity"/&gt;
 &lt;/PreferenceScreen&gt;
&lt;/PreferenceCategory&gt;
</code></pre>

blocks|key|793482|text|这个解决方案向您展示了如何将活动连接到您的首选项头中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|793483|首先，您的目标活动必须像这样在清单中声明：|793484|<activity+android:name=".ui.activities.MyActivity">
++++<intent-filter>
++++++++<action+android:name=".ui.activities.MyActivity"+/>
++++++++<category+android:name="android.intent.category.DEFAULT"+/>
</intent-filter>
</activity>|code-block|syntax|javascript|793485|请注意，此处的动作和动作的android:name是相同的。|793486|现在，在您的preferences.xml文件中，您只需声明一个头文件，如下所示：|793487|<header
++++android:title="@string/my_activity_title"
++++android:summary="@string/my_activity_summary">
++++<intent+android:action=".ui.activities.MyActivity"/>
</header>|793488|这就是它的全部。|793489|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|V|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|F|7|X|8|@]|9|@]|A|$G|H]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

This solution shows you how to wire in an activity into your preferences headers.

First, your target activity must be declared in the manifest like this:

<pre><code>&lt;activity android:name=".ui.activities.MyActivity"&gt;
 &lt;intent-filter&gt;
 &lt;action android:name=".ui.activities.MyActivity" /&gt;
 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
&lt;/intent-filter&gt;
&lt;/activity&gt;
</code></pre>

Notice here that the android:name for the activity and action are the same.

Now in your preferences.xml file you need only to declare a header like this:

<pre><code>&lt;header
 android:title="@string/my_activity_title"
 android:summary="@string/my_activity_summary"&gt;
 &lt;intent android:action=".ui.activities.MyActivity"/&gt;
&lt;/header&gt;
</code></pre>

And that's all there is to it.

blocks|key|577364|text|注意！Gradle的值应该是应用程序的包id，正如在AndroidManifest.xml文件(在Gradle+build文件中定义)的根元素中声明的那样。它不一定与Activity类的Java包相同(人们通常将它们放在"ui"的子包中)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|577365|因此，在您的特定情况下，我打赌targetPackage应该是"my.notifier"，而不是"my.notifier.ui"+(我必须查看清单才能确定)。|577366|entityMap^0|Q|J|32|4|0|F|D|V|D|1C|G|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|V|8|@]|D|@]|E|$]]]|I|$]]

Caution! The value of <code>targetPackage</code> should be the package id of the app, as declared in the root element of your <code>AndroidManifest.xml</code> file (which you define in your Gradle build file). It is not necessary the same as the Java package of your Activity class (people usually put them in a subpackage of <code>"ui"</code>).

So in your specific case, I bet you the <code>targetPackage</code> should be <code>"my.notifier"</code>, not <code>"my.notifier.ui"</code> (I would have to see the manifest to be sure).

blocks|key|793571|text|不需要添加IntentFilter。您可以通过完全限定名称来引用activity：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|793572|<intent+android:targetPackage="my.notifier.ui"
++++android:targetClass="my.notifier.ui.EditCoursesNamesActivity"/>|code-block|syntax|javascript|793573|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

No need to add IntentFilter. You can refer to activity by fully qualified name:

<pre><code>&lt;intent android:targetPackage="my.notifier.ui"
 android:targetClass="my.notifier.ui.EditCoursesNamesActivity"/&gt;
</code></pre>

blocks|key|577432|text|我通过在清单中声明<intent-filter>解决了同样的问题，如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|577433|<activity
++++android:name="PeriodosActivity"
++++android:label="Periodos"
++++android:screenOrientation="portrait">

++++<intent-filter>
++++++++<action+android:name="Periodos"+/>+/*Same+as+in+the+preference's+<intent>+element's+action+attribute*/
++++++++<category+android:name="android.intent.category.DEFAULT"/>

</intent-filter>|code-block|syntax|javascript|577434|entityMap^0|9|F|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

I solved the same issue by declaring the <code>&lt;intent-filter&gt;</code> in the manifest as follows:

<pre><code>&lt;activity
 android:name="PeriodosActivity"
 android:label="Periodos"
 android:screenOrientation="portrait"&gt;

 &lt;intent-filter&gt;
 &lt;action android:name="Periodos" /&gt; /*Same as in the preference's &lt;intent&gt; element's action attribute*/
 &lt;category android:name="android.intent.category.DEFAULT"/&gt;

&lt;/intent-filter&gt;
</code></pre>

blocks|key|793675|text|由于包名称的重构，targetPackage和targetClass(前缀)可能不同。检查它的简单方法你可以在清单中删除活动并调用startActivity()，然后你会在logCat中看到这个错误："Unable+to+find+explicit+class+{'targetPackage'/'targetClass'}“。这些都是您应该写入Preference>intent的正确名称。Intent-不需要过滤器。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|793676|entityMap^0|1T|F|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|K|8|@]|D|@]|E|$]]]|G|$]]

targetPackage and targetClass(prefix) may differ because of refactoring package name. Easy way to check it you can delete activity in manifest and call <code>startActivity()</code> then you will see this error in logCat: "Unable to find explicit activity class {'targetPackage'/'targetClass'}". Those are the right names you should write into Preference>intent. Intent-filter is not needed.

blocks|key|577551|text|我也有同样的问题。并通过以下方式解决|type|unstyled|depth|inlineStyleRanges|entityRanges|data|577552|androidManifest.xml|577553|<?xml+version="1.0"+encoding="utf-8"?>
<manifest+xmlns:android="http://schemas.android.com/apk/res/android"
++++++++++package="com.example.coding1.myapp">
<application
++++++++android:allowBackup="true"
++++++++android:icon="@mipmap/ic_launcher"
++++++++android:label="@string/app_name"
++++++++android:theme="@style/AppTheme">

++++++++<activity
++++++++++++android:name=".MainActivity"
++++++++++++android:label="@string/app_name"
++++++++++++>+
++++++++++++<intent-filter>
++++++++++++++++<action+android:name="android.intent.action.MAIN"+/>
++++++++++++++++<category+android:name="android.intent.category.LAUNCHER"+/>
++++++++++++</intent-filter>
++++++++</activity>
//+====================+HERE+================================
++++++++<activity
++++++++++++android:name="yaran.AccountWorker.AuthenticatorActivity"
++++++++++++android:label="@string/app_name"
++++++++++++>
++++++++++++<intent-filter>
++++++++++++++++<action+android:name="AuthenticatorActivity"+/>
++++++++++++++++<category+android:name="android.intent.category.DEFAULT"+/>
++++++++++++</intent-filter>
++++++++</activity>
//+========================================================
++++++++<service+android:name="yaran.AccountWorker.AuthenticatorService"+android:exported="false"++android:process=":auth">
++++++++++++<intent-filter>
++++++++++++++++<action+android:name="android.accounts.AccountAuthenticator"+/>
++++++++++++</intent-filter>
++++++++++++<meta-data+android:name="android.accounts.AccountAuthenticator"
+++++++++++++++++++++++android:resource="@xml/authenticator"+/>
++++++++</service>
++++</application>|code-block|syntax|javascript|577554|优先考虑的是：|577555|<?xml+version="1.0"+encoding="utf-8"?>
<PreferenceScreen+xmlns:android="http://schemas.android.com/apk/res/android">

++++<PreferenceCategory
++++++++android:title="General+Settings"+/>

++++<Preference
++++++++android:key="account_settings"
++++++++android:title="Account+Settings"
++++++++android:summary="">
++++++++<intent
++++++++++++android:action="AuthenticatorActivity"
++++++++++++android:targetPackage="com.example.coding1.myapp"
++++++++++++android:targetClass="yaran.AccountWorker.AuthenticatorActivity"+/>
++++</Preference>
</PreferenceScreen>|577556|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I was having the same issue.
and solve by this 

androidManifest.xml

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
 package="com.example.coding1.myapp"&gt;
&lt;application
 android:allowBackup="true"
 android:icon="@mipmap/ic_launcher"
 android:label="@string/app_name"
 android:theme="@style/AppTheme"&gt;

 &lt;activity
 android:name=".MainActivity"
 android:label="@string/app_name"
 &gt; 
 &lt;intent-filter&gt;
 &lt;action android:name="android.intent.action.MAIN" /&gt;
 &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
 &lt;/intent-filter&gt;
 &lt;/activity&gt;
// ==================== HERE ================================
 &lt;activity
 android:name="yaran.AccountWorker.AuthenticatorActivity"
 android:label="@string/app_name"
 &gt;
 &lt;intent-filter&gt;
 &lt;action android:name="AuthenticatorActivity" /&gt;
 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
 &lt;/intent-filter&gt;
 &lt;/activity&gt;
// ========================================================
 &lt;service android:name="yaran.AccountWorker.AuthenticatorService" android:exported="false" android:process=":auth"&gt;
 &lt;intent-filter&gt;
 &lt;action android:name="android.accounts.AccountAuthenticator" /&gt;
 &lt;/intent-filter&gt;
 &lt;meta-data android:name="android.accounts.AccountAuthenticator"
 android:resource="@xml/authenticator" /&gt;
 &lt;/service&gt;
 &lt;/application&gt;
</code></pre>

and in Preference:

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android"&gt;

 &lt;PreferenceCategory
 android:title="General Settings" /&gt;

 &lt;Preference
 android:key="account_settings"
 android:title="Account Settings"
 android:summary=""&gt;
 &lt;intent
 android:action="AuthenticatorActivity"
 android:targetPackage="com.example.coding1.myapp"
 android:targetClass="yaran.AccountWorker.AuthenticatorActivity" /&gt;
 &lt;/Preference&gt;
&lt;/PreferenceScreen&gt;
</code></pre>

blocks|key|793755|text|<Preference>
++++<intent
++++++++android:targetPackage="applicationIdFromBuildGradle"
++++++++android:targetClass="targetClassFromJavaFile.YourClassName"/>
</Preference>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|793756|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>&lt;Preference&gt;
 &lt;intent
 android:targetPackage="applicationIdFromBuildGradle"
 android:targetClass="targetClassFromJavaFile.YourClassName"/&gt;
&lt;/Preference&gt;
</code></pre>

blocks|key|793824|text|<Preference>
<intent
++++android:targetPackage="applicationIdFromBuildGradle"
++++android:targetClass="targetClassFromJavaFile.YourClassName"/>|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|793825|​|unstyled|793826|请谨慎使用build.gradle(app)中的packgename|793827|+++++applicationId+"com.some.some"+|793828|我的包在清单和类中是这样的"com.some.love“，当我运行.This解决我的问题时，我得到了异常|793829|reference+@style-7|793830|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$B|C]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|F|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|F|7|W|8|@]|9|@]|A|$]]]|P|$]]

<pre><code>&lt;Preference&gt;
&lt;intent
 android:targetPackage="applicationIdFromBuildGradle"
 android:targetClass="targetClassFromJavaFile.YourClassName"/&gt;
</code></pre>



Please care use packgename in build.gradle(app) 
 applicationId "com.some.some" 
my package was like this "com.some.love" in manifest and class
I got exception while running .This Solved me 
reference @style-7

I would like to start an Activity from a default preferences.xml, with &lt; intent > tag. The Activities are well tested, the problem is not with that. (I'm extending PreferenceActivity in my app, so the preferences.xml is "comes" with that)
Please look at the code, what's wrong?

preferences.xml:

<pre><code>.... 
&lt;PreferenceCategory 
 android:title="@string/titleEtcSetup"&gt;
 &lt;PreferenceScreen
 android:key="renameCourses"
 android:title="@string/titleRenameCourses"
 android:summary="@string/textRenameDisplayedCoursesNames"&gt;
 &lt;intent
 android:action="android.intent.action.VIEW"
 android:targetPackage="my.notifier.ui"
 android:targetClass="my.notifier.ui.EditCoursesNamesActivity" /&gt; 
 &lt;/PreferenceScreen&gt;
.....
&lt;/PreferenceCategory&gt;
..... 
</code></pre>

manifest.xml:

<pre><code>....
&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="my.notifier.ui"....
....
&lt;activity android:name=".EditCoursesNamesActivity" android:label="@string/titleRenameCourses"&gt;
 &lt;intent-filter&gt;
 &lt;action android:name="android.intent.action.VIEW" /&gt;
 &lt;category android:name="android.intent.category.DEFAULT" /&gt;
 &lt;/intent-filter&gt;
 &lt;/activity&gt;
 .....
</code></pre>

The Activity isn't calling when I press the "renameCourses item", nothing happens. The LogCat is "clear", no errors or warnings. I was searching a lot, and I didn't find a solution, maybe I just missed something... Please help!

Android: Start Activity from preferences.xml

Java

我想要从带有< preferences.xml >标记的默认意图开始一个活动。这些活动都经过了很好的测试，问题不在于此。(我在我的应用程序中扩展了PreferenceActivity，所以preferences.xml是“附带的”)请看代码，有什么问题吗？preferences.xml：.... <Preference...

问安卓:从preferences.xml开始活动
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