引用：

转载自：http://dev.10086.cn/cmdn/bbs/thread-37036-1-1.html 

public static boolean runRootCommand(String command) {
Process process = null;
DataOutputStream os = null;
try {
process = Runtime.getRuntime().exec("su");
os = new DataOutputStream(process.getOutputStream());
os.writeBytes(command+"\n");
os.writeBytes("exit\n");
os.flush();
process.waitFor();
} catch (Exception e) {
Log.d(TAG, "the device is not rooted, error message: " + e.getMessage());
return false;
} finally {
try {
if (os != null) {
os.close();
}
if(process != null) {
process.destroy();
}
} catch (Exception e) {
e.printStackTrace();
}
}
return true;
}