mBtnAction = (Button)findViewById(R.id.BTN_ACTION);
        mTxtContents = (EditText)findViewById(R.id.TXT_CONTENTS); 
        mBtnAction.setOnClickListener(this);        private void doAction() {
                try {  
                Runtime runtime = Runtime.getRuntime();
                System.out.println("hello");
                Process proc = runtime.exec("ping fr.yahoo.com -c 1"); // other servers, for example
                proc.waitFor();
                } catch (IOException e) {  
            e.printStackTrace();  
        } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                }
        }
        private void printText(String text) {
                mTxtContents.append(text);
                mTxtContents.append("\n");
        }
如何将ping的结果回现到 TxtContents里面?
点击按钮后无响应?
求助