Android中通过代码检测系统是否有root权限

RootManager.java

package lizm.root;import java.io.DataOutputStream;import android.app.Activity;import android.util.Log;public class RootManager{ public static boolean RootCommand(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("*** DEBUG ***", "ROOT REE" + e.getMessage());            return false;        } finally        {            try            {                if (os != null)                {                    os.close();                }                process.destroy();            } catch (Exception e)            {            }        }        Log.d("*** DEBUG ***", "Root SUC ");        return true;    }}

MainActivity.java

package lizm.root;import android.os.Bundle;import android.app.Activity;import android.view.Menu;import android.widget.Toast;public class MainActivity extends Activity {    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        String apkRoot="chmod 777 "+getPackageCodePath();        boolean root = RootManager.RootCommand(apkRoot);        Toast.makeText(this, "root: "+root, Toast.LENGTH_SHORT).show();    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        getMenuInflater().inflate(R.menu.activity_main, menu);        return true;    }}

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