4.0 及以后版本 Boot_COMPLETED广播不响应的问题

 

 

请自行参阅博文:

http://blog.csdn.net/loovejava/article/details/9261907

android3.1以后,packageManager增加了对“stop state”的应用的管理,这个stopped和Activity生命周期中的stop状态是完全两码事,指的是安装后从来没有启动过和被用户手动强制停止的应用,与此同时系统增加了2个Flag:FLAG_INCLUDE_STOPPED_PACKAGES和FLAG_EXCLUDE_STOPPED_PACKAGES ,来标识一个intent是否激活处于“stopped state”的应用。当2个Flag都不设置或者都进行设置的时候,采用的是FLAG_INCLUDE_STOPPED_PACKAGES的效果。

 

 

google给所有的广播intent默认加上FLAG_EXCLUDE_STOPPED_PACKAGES效果卓著,能在一定程度上增加安全系数,还能提高效率,但是RECEIVE_BOOT_COMPLETED广播如果用户没有运行过应用,就不会响应了。


    解决这个问题还有一种途径,google允许应用和后台服务通过给广播intent设置FLAG_INCLUDE_STOPPED_PACKAGES来唤醒处于“stopped state”的程序,也就是用户自己写的广播intent可以控制这个机制,但是系统自带的广播intent,由于不能修改,就只能接受这个现实了。

 

补充:

一般应用安装完后, 若用户不手动启动一次, 则会在用户在文件中保存此应用的信息:

/data/system/users/0/package-restrictions.xml

文件内容见:

<?xml version='1.0' encoding='utf-8' standalone='yes' ?>
<package-restrictions>
<pkg name="com.google.android.ears" enabled="2" />
<pkg name="com.android.contacts">
<disabled-components>
<item name="com.android.contacts.activities.DialtactsActivity" />
</disabled-components>
</pkg>
<pkg name="com.boohee.one">
<enabled-components>
<item name="com.xiaomi.push.service.XMPushService" />
</enabled-components>
</pkg>
<pkg name="com.google.android.partnersetup">
<enabled-components>
<item name="com.google.android.partnersetup.PhoneStateReceiver" />
</enabled-components>
</pkg>
<pkg name="com.anson.boot" stopped="true" nl="true" />

最后一行中stoped="true", nl="true"

nl 是 notlaunched的意思.

 

此文件的读写见文件:

 ./frameworks/base/services/java/com/android/server/pm/Settings.java

 

在./frameworks/base/services/java/com/android/server/pm/PackageManagerService.java

中声明了方法代外部调用:

    public void setPackageStoppedState(String packageName, boolean stopped, int userId) {
        if (!sUserManager.exists(userId)) return;
        final int uid = Binder.getCallingUid();
        final int permission = mContext.checkCallingOrSelfPermission(
                android.Manifest.permission.CHANGE_COMPONENT_ENABLED_STATE);
        final boolean allowedByPermission = (permission == PackageManager.PERMISSION_GRANTED);
        enforceCrossUserPermission(uid, userId, true, "stop package");
        // writer
        synchronized (mPackages) {
            if (mSettings.setPackageStoppedStateLPw(packageName, stopped, allowedByPermission,
                    uid, userId)) {
                scheduleWritePackageRestrictionsLocked(userId);
            }
        }
    }

 

如:

./frameworks/base/services/java/com/android/server/am/ActivityStack.java

final boolean resumeTopActivityLocked(ActivityRecord prev, Bundle options){
		...
		// Launching this app's activity, make sure the app is no longer
        // considered stopped.
        try {
            AppGlobals.getPackageManager().setPackageStoppedState(
                    next.packageName, false, next.userId); /* TODO: Verify if correct userid */
        } catch (RemoteException e1) {
        } catch (IllegalArgumentException e) {
            Slog.w(TAG, "Failed trying to unstop package "
                    + next.packageName + ": " + e);
        }

 

 

 

 

 

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