Android用代码获取手机root之后的最高权限

public static boolean isRoot(String pkgCodePath) {
Process process = null;
DataOutputStream os = null;
try {
String cmd = "chmod 777 " + pkgCodePath;
process = Runtime.getRuntime().exec("su"); // 切换到root帐号
os = new DataOutputStream(process.getOutputStream());
os.writeBytes(cmd + "\n");
os.writeBytes("exit\n");
os.flush();
process.waitFor();
} catch (Exception e) {
return false;
} finally {
try {
if (os != null) {
os.close();
}
process.destroy();
} catch (Exception e) {
}
}
return true;
}

isRoot(getPackageCodePath());

boolean rootResult=isRoot(getPackageCodePath());