Is your feature request related to a problem? Please describe.
On same device custom launcher, if the WidgetConfigurationActivity is not exported, widget cannot be added to homescreen.
Problem is that launchers do not use startAppWidgetConfigureActivityForResult but simply startActivityForResult.
So you get error like:
Permission Denial: starting Intent { act=android.appwidget.action.APPWIDGET_CONFIG
URE cmp=de.beowulf.wetter/.widget.WidgetConfigurationActivity (has extras) } from ProcessRecord{a8cba08 4600:com.hmct.vision/u0a62} (pid
=4600, uid=10062) not exported from uid 10153
Describe the solution you'd like
Changing android:exported="false" to android:exported="true" solve the problem.
Additional context
<activity
android:name=".widget.WidgetConfigurationActivity"
android:exported="false">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_CONFIGURE"/>
</intent-filter>
</activity>
### Is your feature request related to a problem? Please describe.
On same device custom launcher, if the WidgetConfigurationActivity is not exported, widget cannot be added to homescreen.
Problem is that launchers do not use `startAppWidgetConfigureActivityForResult` but simply `startActivityForResult`.
So you get error like:
```
Permission Denial: starting Intent { act=android.appwidget.action.APPWIDGET_CONFIG
URE cmp=de.beowulf.wetter/.widget.WidgetConfigurationActivity (has extras) } from ProcessRecord{a8cba08 4600:com.hmct.vision/u0a62} (pid
=4600, uid=10062) not exported from uid 10153
```
<!--A clear and concise description of what the problem is, or which function is missing/you want.-->
### Describe the solution you'd like
<!--A clear and concise description of what you want to happen.-->
Changing `android:exported="false"` to `android:exported="true"` solve the problem.
### Additional context
<!--Add any other context, screenshots or design suggestions about the feature request here.-->
<activity
android:name=".widget.WidgetConfigurationActivity"
android:exported="false">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_CONFIGURE"/>
</intent-filter>
</activity>