我在API的说明getShared preferences（字符串，INT）检查，第二属性定义可访问模式，可以采取0或MODE_PRIVATE的默认操作，MODE_WORLD_READABLE和MODE_WORLD_WRITEABLE控制权限。

As I checked in APIs description for getSharedPreferences(String, int),Second attribute is defining accessibility mode and can take 0 or MODE_PRIVATE for the default operation, MODE_WORLD_READABLE and MODE_WORLD_WRITEABLE to control permissions.

但是，这种小记在API说明：

But there is this small note in API description:

注：目前这一类   （android.content.Shared preferences）   不支持跨多个应用   流程。这将在以后添加。

Note: currently this class (android.content.SharedPreferences) does not support use across multiple processes. This will be added later.

此外，在马克L.墨菲的书开头的Andr​​oid 2，他提到：

Moreover in Mark L. Murphy book "beginning Android 2" he mentioned:

（最终，preferences可能   共享跨应用程序，但   不支持作为时间   写这篇文章的）

(Eventually, preferences might be shareable across applications, but that is not supported as of the time of this writing)

我太糊涂了！这是否意味着MODE_WORLD_READABLE getShared prefrences的MODE_WORLD_WRITEABLE并且有，但尚不支持最新的API级别???

Im so confused! does this mean that MODE_WORLD_READABLE and MODE_WORLD_WRITEABLE of getSharedPrefrences is there but NOT SUPPORTED YET in latest API level???

谢谢！ 米泔

推荐答案

我的书引用基于这样评论。

My book reference is based upon that comment.

此外，使 MODE_WORLD_READABLE 的任何文件或（差） MODE_WORLD_WRITEABLE 是一个坏主意。你失去了安全的希望。

Moreover, making any file MODE_WORLD_READABLE or (worse) MODE_WORLD_WRITEABLE is a bad idea. You lose any hope of security.

如果你想两个应用程序之间共享数据，也有解决方案，如无数的：

If you wish to share data between two applications, there are a myriad of solutions, such as:

与AIDL暴露的API服务 在使用API​​服务威盛 startService（）并通过使者或 createPendingResult（） PendingIntent 什么 内容提供商 广播意图 service with an API exposed by AIDL service with an API exposed via commands sent via startService() and responses sent via a Messenger or createPendingResult() PendingIntent or something content provider broadcast Intents

所有这些都允许您定义权限整合，并让您的访问控制的粒度。

All of those allow you to define permissions for integration and let you control the granularity of access.