在另一个项目中使用 Android 库项目 Activity [英] Using an Android library project Activity within another project

问题描述

我有一个 Android 库项目，我想在另一个 Android 项目中使用它.

I have an Android library project that I would like to use from within another Android project.

该库在其 AndroidManifest 中声明了一个 Activity.当我在第二个项目中尝试以下操作时:

The library has a Activity declared in its AndroidManifest. When I try the following within the second project:

        Intent intent = new Intent(this, ReaderActivity.class);
        startActivity(intent);

我收到以下异常:

 java.lang.RuntimeException: Unable to start activity ComponentInfo{br.com.digitalpages.reader.demo/br.com.digitalpages.reader.demo.ReaderDemoActivity}: android.content.ActivityNotFoundException: Unable to find explicit activity class {br.com.digitalpages.reader.demo/br.com.digitalpages.reader.ReaderActivity}; have you declared this activity in your AndroidManifest.xml?
     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
...
 Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {br.com.digitalpages.reader.demo/br.com.digitalpages.reader.ReaderActivity}; have you declared this activity in your AndroidManifest.xml?
     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1404)
     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1378)
...

如何从另一个项目打开活动?

How can I open the Activity from the another project?

根据用户的回答，我将以下行添加到我的第二个项目中

By users answers I added the following line into my second project

<uses-library android:name="br.com.digitalpages.reader" android:required="true" />

但是还是不行

推荐答案

我相信你必须包括 在您自己的 AndroidManifest.xml 中——我不认为它是从库中获取的.我手边没有这方面的参考资料.

I believe you must include the <activity> in your own AndroidManifest.xml -- I don't think it gets picked up from a library. I don't have my reference for that handy.

更新:这是官方解决方案.来自文档:

Update: It's official solution. From the doc:

在清单文件中声明库组件

在应用项目的manifest文件中，必须添加应用程序将使用的所有组件的声明是从库项目导入.例如，您必须声明任何、、、等等在，以及、 和类似元素.

In the manifest file of the application project, you must add declarations of all components that the application will use that are imported from a library project. For example, you must declare any <activity>, <service>, <receiver>, <provider>, and so on, as well as <permission>, <uses-library>, and similar elements.

声明应该通过它们的引用来引用库组件完全限定的包名称(在适当的情况下).

Declarations should reference the library components by their fully-qualified package names, where appropriate.

这篇关于在另一个项目中使用 Android 库项目 Activity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！