Android的自定义类别 [英] Android custom categories

问题描述

我有一个视图包含可用的应用程序的行为作为图标+文字对（台式机等）的应用程序的主屏幕。

I have a view as a main screen of the application which contains the available application's actions as icon+text pairs ( desktop like).

我想找出什么编程仅在我AndroidManifest.xml中定义的活动

I want to find out programatically what are the activities defined ONLY in my AndroidManifest.xml

假设我有：

< activity android:name="example.mainActivity" android:label="mainActivity">  
    < intent-filter>  
        < action android:name="android.intent.action.MAIN" />  
        < category android:name="android.intent.category.LAUNCHER" />  
    < /intent-filter>  
< /activity>  
< activity android:name="example.activity1" android:label="Activity1">  
    < intent-filter>  
        < action android:name="android.intent.action.VIEW" />  
        < category android:name="example.custom.ACTIVITY" />  
    < /intent-filter>  
< /activity>  
< activity android:name="example.activity2" android:label="Activity2">  
    < intent-filter>  
        < action android:name="android.intent.action.VIEW" />  
        < category android:name="example.custom.ACTIVITY" />  
    < /intent-filter>  
< /activity>  

我想，在mainActivity到dinamically阅读活动1和活性2，因为当我添加Activity3例如，它会自动读取。

I want that in the mainActivity to dinamically read Activity1 and Activity2 because when i add Activity3 for example it will be automatically read.

意向意图=新的意图（android.intent.action.VIEW）; intent.addCategory（example.custom.ACTIVITY）; 名单解析= getPackageManager（）queryIntentActivities（意向，0）;。

Intent intent = new Intent("android.intent.action.VIEW"); intent.addCategory("example.custom.ACTIVITY"); List resolves = getPackageManager().queryIntentActivities(intent, 0);

在做出决议列表我期望有两个定义的活动，所以我可以得到他们的标签和形象，创造图标在桌面

In the resolves list i expect to have the two defined activities so i can get their label and image and create the icon for the desktop

我认为这可以通过定义一个定制类来完成，example.custom.ACTIVITY，并在mainActivity使用packageManager.queryIntentActivities（意向意图，诠释标志），但它似乎并不奏效。

I thought that this could be done by defining a custom category, example.custom.ACTIVITY, and in the mainActivity use the packageManager.queryIntentActivities(Intent intent, int flags) but it doesn't seem to be working.

我真的想为code到dinamically发现在我的应用程序的安装活动。 你对如何做到这一点的任何想法吗？ 谢谢

I really would like to code it to dinamically discover the installed activities in my application. Do you have any ideas on how to do this? Thank you

推荐答案

在我的应用我所定义的动作为android.intent.action.MAIN（而不是android.intent.action.VIEW），并检索可以作为你的预期：

In my app I defined the actions as "android.intent.action.MAIN" (not "android.intent.action.VIEW"), and the retrieval works as you expected:

Intent intent = new Intent(Intent.ACTION_MAIN, null);
intent.addCategory("com.example.ACTIVITY");
PackageManager pm = getPackageManager(); 
List<ResolveInfo> list = pm.queryIntentActivities(intent, 0); 

PS，我曾经为com.example，因为榜样是不是一个好名字空间的例子，在你的清单包声明必须至少有两个段（见<一href="http://stackoverflow.com/questions/16107401/application-package-androidmanifest-xml-must-have-a-minimum-of-2-segments">here)

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