Android 7.1 点击清空全部按钮清空一切运行进程（包括后台在播音乐）

Android 7.1 点击清空全部按钮清空一切运行进程（包括后台在播音乐）

近来收到客户反馈说音乐在后台播放时点击“清空全部”按钮后台音乐没有被kill掉，仍在播放，需要在点击“清空全部”后kill掉一切后台运行进程，具体修改参照如下：

/frameworks/base/services/core/java/com/android/server/am/ActivityManagerService.java

    private void cleanUpRemovedTaskLocked(TaskRecord tr, boolean killProcess,
            boolean removeFromRecents) {
        if (removeFromRecents) {
            mRecentTasks.remove(tr);
            tr.removedFromRecents();
        }
        ComponentName component = tr.getBaseIntent().getComponent();
        if (component == null) {
            Slog.w(TAG, "No component for base intent of task: " + tr);
            return;
        }

        // Find any running services associated with this app and stop if needed.
        mServices.cleanUpRemovedTaskLocked(tr, component, new Intent(tr.getBaseIntent()));

        if (!killProcess) {
            return;
        }

        // Determine if the process(es) for this task should be killed.
        final String pkg = component.getPackageName();
        ArrayList<ProcessRecord> procsToKill = new ArrayList<>();
        ArrayMap<String, SparseArray<ProcessRecord>> pmap = mProcessNames.getMap();
        for (int i = 0; i < pmap.size(); i++) {

            SparseArray<ProcessRecord> uids = pmap.valueAt(i);
            for (int j = 0; j < uids.size(); j++) {
                ProcessRecord proc = uids.valueAt(j);
                if (proc.userId != tr.userId) {
                    // Don't kill process for a different user.
                    continue;
                }
                if (proc == mHomeProcess) {
                    // Don't kill the home process along with tasks from the same package.
                    continue;
                }
                if (!proc.pkgList.containsKey(pkg)) {
                    // Don't kill process that is not associated with this task.
                    continue;
                }

                for (int k = 0; k < proc.activities.size(); k++) {
                    TaskRecord otherTask = proc.activities.get(k).task;
                    if (tr.taskId != otherTask.taskId && otherTask.inRecents) {
                        // Don't kill process(es) that has an activity in a different task that is
                        // also in recents.
                        return;
                    }
                }

-                if (proc.foregroundServices) {
-                    // Don't kill process(es) with foreground service.
-                    return;
-                }

                // Add process to kill list.
                procsToKill.add(proc);
            }
        }

        // Kill the running processes.
        for (int i = 0; i < procsToKill.size(); i++) {
            ProcessRecord pr = procsToKill.get(i);

-            if (pr.setSchedGroup == ProcessList.SCHED_GROUP_BACKGROUND
-                    && pr.curReceiver == null) {
                pr.kill("remove task", true);
-            } else {
-                // We delay killing processes that are not in the background or running a receiver.
-                pr.waitingToKill = "remove task";
-            }
        }
    }

重新编译验证，修改生效，点击“清空全部”按钮后台在播音乐被kill掉