Android：从主应用程序启动库活动

Question

i already readed the "similar questions" but i'm still not able to launch the Library Project Activity from the Main Project.

I have project A (Main) and i have project B (library)

Activity is declared in the library manifest (even in main manifest)

but when i run the code the log throws the error that ask if activity is declared in manifest.xml file.

Main Project is rightly including the library, everything compiles but the error is that, i put the intent i'm trying from main project:

Intent intent = new Intent();
intent.setComponent(new ComponentName("com.package.activities", "MyActivity"));
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setPackage(context.getPackageName()); // tried without this
context.startActivity(intent);

this is my manifest (from library project):

<activity
        android:name="com.package.activities.MyActivity"
        android:exported="true"
        android:label="@string/title_activity"
        android:screenOrientation="landscape"
        android:configChanges="keyboardHidden|orientation"/>

Log:

android.content.ActivityNotFoundException: Unable to find explicit activity class {com.package.activities/MyActivity}; have you declared this activity in your AndroidManifest.xml?

Answer 1

Give this a try:

Intent intent = new Intent(context, MyActivity.class);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);

Answer 2

When you try to launch the activity as a separate component, Android starts looking for this library activity within your main project code. As the activity belongs to the library and not the main project, you get the ActivityNotFoundException .

Given that you have added the library project as an AAR file to the main project, you can simply launch the library activity from the main project as follows:

Intent intent=new Intent(this, "your.library.package.activityname.class")
startActivity(intent)

You must declare the library activity in the manifest file of your main project. A single line should suffice

<application ...>
    <activity android:name="your.library.package.activityname" />
</application>