Android的java.lang.SecurityException异常的Settings.Secure.putString（）

我想在Android 2.2的设置系统属性。采用Android Eclipse的插件。这是造成异常的行是：

I'm trying to set a system property in Android 2.2. Using Android for eclipse plug-in. The line that's causing the exception is:

Settings.Secure.putString(getContentResolver(),
                          Settings.Secure.HTTP_PROXY, "127.0.0.1:8099")

和而我越来越模拟器中运行：

And while running in the emulator I'm getting:

22 08-01：48：44.338：ERROR / DatabaseUtils（58）：java.lang.SecurityException异常：权限拒绝：写保护设置需要android.permission.WRITE_SECURE_SETTINGS

08-01 22:48:44.338: ERROR/DatabaseUtils(58): java.lang.SecurityException: Permission denial: writing to secure settings requires android.permission.WRITE_SECURE_SETTINGS

我已经在我的Andr​​oidManifest.xml中的应用程序标签的前面以下行：

I have already in my AndroidManifest.xml the following lines in front of the 'application' tag:

<uses-permission android:name="android.permission.WRITE_SECURE_SETTINGS" />
<uses-permission android:name="android.permission.WRITE_SETTINGS" />

还有什么我缺少什么？

What else am I missing?