android 自动打开移动网络

自动打开移动网络    代码如下:

public void gprs(boolean isEnable)throws Exception
{
ConnectivityManager connManager=(ConnectivityManager)this.getSystemService(CONNECTIVITY_SERVICE);
Class cmClass=connManager.getClass();
Class[] arcClasses=new Class[1];
arcClasses[0]=boolean.class;

Method method=cmClass.getMethod("setMobileDataEnabled", arcClasses);
method.invoke(connManager, isEnable);
}