从不同的包发射活动 [英] launch activities from different package

问题描述

我有活性的封装之一，我想运行一个意图从而将一个活动B，其为在包两种。

I have activity A in package one, and I want to run an intent which will up an activity B which is in package two.

我怎样才能做到这一点？所有样品将受到欢迎。

How can I do this? Any samples will be welcome.

这是香港专业教育学院做的，并且错误我得到：

this is what ive done, and the error i get:

第一个活动（MainActivity）在包：com.abelski.currencyclient 而第二项活动（在不同势包SecondActivity：com.idan.second

first activity ("MainActivity") in a package: com.abelski.currencyclient and second activity("SecondActivity" in a diffrent package: com.idan.second

现在我想呼吁从MainActivity到SecondActivity。

now i wanna call from MainActivity to SecondActivity.

香港专业教育学院添加了此行的MainActivity的清单：

ive added this line at the manifest of the MainActivity:

 <activity android:name="com.idan.second.SecondApplicationActivity"></activity>

现在的主要活动我得到这个按钮，运行该行：

now in main Activity i got this button which run this line:

Intent intent = new Intent(MainActivity.this,SecondApplicationActivity.class); 

和这是RROR：

04-29 09:20:59.197: ERROR/AndroidRuntime(399): Uncaught handler: thread main exiting due to uncaught exception
04-29 09:20:59.276: ERROR/AndroidRuntime(399): java.lang.NoClassDefFoundError: com.idan.second.SecondApplicationActivity
04-29 09:20:59.276: ERROR/AndroidRuntime(399):     

...

感谢您的帮助。

推荐答案

我假设的包你的意思是应用程序。

I am assuming that by "packages" you mean applications.

我们有： - ApplicationA与FirstActivity - ApplicationB与SecondActivity

We have: - ApplicationA with FirstActivity - ApplicationB with SecondActivity

如果在ApplicationB的Andr​​oidManifest.xml文件，在SecondActivity的声明，你加一个意图过滤器，如：

If, in the ApplicationB's AndroidManifest.xml file, in the declaration of SecondActivity you add an intent filter such as:

<activity android:name=".SecondActivity">
  <intent-filter>
    <action android:name="applicationB.intent.action.Launch" />
    <category android:name="android.intent.category.DEFAULT" />
  </intent-filter>
</activity>

您可以创建一个Intent推出这个SecondActivity从FirstActivity有：

You can create an Intent to launch this SecondActivity from the FirstActivity with:

Intent intent = new Intent("applicationB.intent.action.Launch");
startActivity(intent);

这一切都说明是：

What this all means is:

• 的SecondActivity具有applicationB.intent.action.Launch
的意图操作的筛选器
• 当你创建与行动意图，并呼吁startActivity系统就会找到该活动（如果有的话），响应它

• The SecondActivity has a filter for the intent action of "applicationB.intent.action.Launch"
• When you create an intent with that action and call 'startActivity' the system will find the activity (if any) that responds to it

这方面的文档是：<一href="http://developer.android.com/intl/zh-TW/reference/android/content/Intent.html">http://developer.android.com/intl/zh-TW/reference/android/content/Intent.html

这篇关于从不同的包发射活动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！