android - 从另一个包开始 Activity

Question

我有这个 list :

<manifest ...
    package="com.my">

    <application ...>

        <activity ...
            android:name=".app.Run">
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    <activity ...
    android:name=".app.Preferences"/>

    <activity ...
    android:name=".library.error.ErrorDialog"/>

    </application>

</manifest>

如何从 Run Activity 启动 ErrorDialog Activity ？

Intent intent = new Intent();
intent.setComponent(new ComponentName("com.my.library.error", "com.my.library.error.ErrorDialog"));
startActivity(intent);

或者

Intent intent = new Intent();
intent.setComponent(new ComponentName("library.error", "library.error.ErrorDialog"));
startActivity(intent);

不工作

---

MEA CULPA...MEA CULPA...

我的 ErrorDialog Activity 不是公开的。 :D

Answer 1

<强>1。与应用程序 list 文件相关

Manifest: 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
  package="app.run"/> 
<activity android:name="app.run"/> 
<activity android:name="library.error.ErrorDialog"/>

package app.run  // Your Main Application Package Name

Activity:
Intent i = new Intent(); 
i.setClassName("app.run", "library.error.ErrorDialog"); //
startActivity(i); 

setClassName()

---

<强>2。与应用程序 list 文件无关

Intent intent = new Intent();
intent.setComponent(new ComponentName("packagename whos activity u want to launch","classname.java"));   
startActivity(intent); 

setComponentName()

在你的案例中

Intent intent=new Intent();
intent.setComponent(new ComponentName("library.error", "library.error.ErrorDialog")); 
startActivity(intent);