当我使用这段代码时：
process = ().exec("su");
os = new DataOutputStream(());
总有一个错误,任何想法？在Android虚拟设备上运行
W/(3211): : Error running exec(). Command: [su] Working Directory: null Environment: null
W/(3211): at (:211)
W/(3211): at (:174)
W/(3211): at (:247)
W/(3211): at (:190)
W/(3211): at (:661)
W/(3211): at $(:410)
W/(3211): at (:818)
W/(3211): Caused by: : Permission denied
W/(3211): at (Native Method)
W/(3211): at (:209)
W/(3211): ... 6 more