[null,null,["最后更新时间 (UTC):2025-07-27。"],[],[],null,["# Appear in recents and app resume\n\nThe [launcher](/training/wearables/user-interfaces#app_launcher_entries)\ndisplays a label and icon for any recently resumed\n[tasks](/guide/components/activities/tasks-and-back-stack). If your app package\nhas multiple apps as separate launcher activities, the launcher doesn't know\nwhich label and icon to show for non-launcher activities, such as\nactivities launched from a tile or a notification. This might\ncause your app to not show up in the **Recents** list in the launcher or to show\nup incorrectly.\n\nLabel all activities\n--------------------\n\nEnsure that your activities, including non-launcher activities, are properly\nlabelled in your manifest file, as shown in the following steps.\n\n\n**Figure 1.** Examples of properly labeled activities.\n\n1. For every activity in your `AndroidManifest.xml` file, determine which launcher activity it belongs to.\n2. Copy the icon, round icon, and label from the parent launcher activity into each associated non-launcher activity.\n3. For activities that are shared among multiple launcher activities, decide\n which icon and label to display that represents all of them.\n\n | **Note:** If the launcher is unable to determine the correct icon and label, it defaults to the icon and label of your application tag.\n\nAssign RecentTasks\n------------------\n\nTo use `RecentTasks` for the **Recents** section in the launcher, ensure that your\n`taskAffinity` elements are correctly defined in your `AndroidManifest.xml` file and\nthat you manage your tasks and back stack consistently.\n\nKeep the following considerations in mind as you assign tasks:\n\n- Choose a unique [`taskAffinity`](/guide/topics/manifest/activity-element#aff) name for each task in your app. You can consider each launcher activity and its children as one task. Assign that `taskAffinity` to every related activity in your manifest file.\n- Avoid calling `startActivity()` with [`FLAG_ACTIVITY_NEW_TASK`](/reference/android/content/Intent#FLAG_ACTIVITY_NEW_TASK) or [`FLAG_ACTIVITY_CLEAR_TOP`](/reference/android/content/Intent#FLAG_ACTIVITY_CLEAR_TOP).\n- Avoid creating *trampoline activities* , which are activities that only launch other activities. Create splash screens using the [SplashScreen API](/reference/android/R.attr#windowSplashscreenContent).\n- Use `android:excludeFromRecents=\"true\"` and `android:noHistory=\"true\"` flags when you don't want your activity to show up in the **Recents** section.\n- Determine the best [launch mode](/guide/components/activities/tasks-and-back-stack#TaskLaunchModes) for your activities and develop with that in mind.\n\nDebugging tips\n--------------\n\nLook out for the following things when debugging:\n\n- If there are double entries in the **Recents** section for a single app, check whether you are using the `NEW_TASK` flag inappropriately.\n- If the wrong icon or label displays, ensure that each associated non-launcher activity has the same icon, round icon, and label as its parent activity.\n- If the system doesn't launch anything after tapping the entry in the launcher, check Logcat (filtered on \"launcher\") for errors, as this issue can be caused by a trampoline activity.\n\nRecommended for you\n-------------------\n\n- Note: link text is displayed when JavaScript is off\n- [Tasks and the back stack](/guide/components/activities/tasks-and-back-stack)\n- [Create custom Quick Settings tiles for your app](/develop/ui/views/quicksettings-tiles)\n- [Learn Jetpack Navigation](/codelabs/android-navigation)"]]