Android code to get the highest permissions after the phone root

First the phone gets root without root, please do not look down.
The first is to write a static method

 
public static boolean isRoot(String pkgCodePath) { 
Process process = null; 
DataOutputStream os = null; 
try { 
String cmd = "chmod 777 " + pkgCodePath; 
process = Runtime.getRuntime().exec("su"); //  Switch to the root account  
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; 
} 

This method returns true and false.
When it's called

 
isRoot(getPackageCodePath()); 

This will prompt the application on the phone to get the highest permission, and if so, it will get it.
You could write it this way if you wanted to know

 
boolean rootResult=isRoot(getPackageCodePath()); 

rootResult is the result.