RecentsView 不显示已经结束的进程

Android11 最近任务Recents功能分析

RecentsView 不显示已经结束的进程

方式1：不完善，如果批量kill掉应用会有些延迟

Index: quickstep/src/com/android/quickstep/views/RecentsView.java
===================================================================
@@ -209,6 +209,7 @@
 import java.util.Objects;
 import java.util.function.Consumer;
 import android.util.Log;
+import android.app.ActivityManager;
 
 /**
  * A list of recent tasks.
@@ -1568,6 +1569,37 @@
         return super.isPageScrollsInitialized() && mLoadPlanEverApplied;
     }
 
+     /**
+     * 移除已经结束进程的task
+     */
+    private void removeRunningTask() {//ArrayList<GroupTask> taskGroups
+        ActivityManager am = (ActivityManager) mContext.getSystemService(Context.ACTIVITY_SERVICE);
+        List<ActivityManager.RecentTaskInfo> tasks = am.getRecentTasks(Integer.MAX_VALUE, ActivityManager.RECENT_IGNORE_UNAVAILABLE);
+        if (tasks !=null){
+            if (DEBUG) Log.d("RecentsView","mCtx tasks size="+tasks.size());
+            for (int i=0;i<tasks.size();i++){
+                ActivityManager.RecentTaskInfo task=tasks.get(i);
+                if (DEBUG) Log.d("RecentsView","removeTask taskId="+task.taskId +",isRunning="+task.isRunning);
+                if (DEBUG && task.baseIntent !=null && task.baseIntent.getComponent() !=null) Log.d("RecentsView","removeTask baseIntent="+task.baseIntent.getComponent().getPackageName());
+                if (!task.isRunning){
+                    ActivityManagerWrapper.getInstance().removeTask(task.taskId);
+                }
+            }
+        }
+    }
     protected void applyLoadPlan(ArrayList<GroupTask> taskGroups) {
         if (mPendingAnimation != null) {
             mPendingAnimation.addEndListener(success -> applyLoadPlan(taskGroups));
@@ -2336,6 +2368,8 @@
      * Reloads the view if anything in recents changed.
      */
     public void reloadIfNeeded() {
+        if (DEBUG) Log.d("RecentsView","reloadIfNeeded");
+        removeRunningTask();
         if (!mModel.isTaskListValid(mTaskListChangeId)) {
             mTaskListChangeId = mModel.getTasks(this::applyLoadPlan, RecentsFilterState
                     .getFilter(mFilterState.getPackageNameToFilter()));