在android代码里怎么执行adb命令

android程序执行adb shell命令（实例源码）package net.URL; import net.gimite.nativeexe.R; import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.view.View.OnClickListener; import android.widget.*; public class MainActivity extends Activity { private TextView outputView; private Button localRunButton; private EditText localPathEdit; private Handler handler = new Handler(); private EditText urlEdit; private Button remoteRunButton; /** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); outputView = (TextView)findViewById(R.id.outputView); localPathEdit = (EditText)findViewById(R.id.localPathEdit); localRunButton = (Button)findViewById(R.id.localRunButton); localRunButton.setOnClickListener(onLocalRunButtonClick); } private OnClickListener onLocalRunButtonClick = new OnClickListener() { public void onClick(View v) { String output = exec(localPathEdit.getText().toString()); output(output); // try { // // // Process process = Runtime.getRuntime().exec(localPathEdit.getText().toString()); // // } catch (IOException e) { // // TODO Auto-generated catch block // e.printStackTrace(); // } } }; // Executes UNIX command. private String exec(String command) { try { Process process = Runtime.getRuntime().exec(command); BufferedReader reader = new BufferedReader( new InputStreamReader(process.getInputStream())); int read; char[] buffer = new char[4096]; StringBuffer output = new StringBuffer(); while ((read = reader.read(buffer)) > 0) { output.append(buffer, 0, read); } reader.close(); process.waitFor(); return output.toString(); } catch (IOException e) { throw new RuntimeException(e); } catch (InterruptedException e) { throw new RuntimeException(e); } } private void download(String urlStr, String localPath) { try { URL url = new URL(urlStr); HttpURLConnection urlconn = (HttpURLConnection)url.openConnection(); urlconn.setRequestMethod("GET"); urlconn.setInstanceFollowRedirects(true); urlconn.connect(); InputStream in = urlconn.getInputStream(); FileOutputStream out = new FileOutputStream(localPath); int read; byte[] buffer = new byte[4096]; while ((read = in.read(buffer)) > 0) { out.write(buffer, 0, read); } out.close(); in.close(); urlconn.disconnect(); } catch (MalformedURLException e) { throw new RuntimeException(e); } catch (IOException e) { throw new RuntimeException(e); } } private void output(final String str) { Runnable proc = new Runnable() { public void run() { outputView.setText(str); } }; handler.post(proc); } }