如何实现Android 中断线程的处理

我现在对一个用户注册的功能
1.用ProgressDialog将当前页面设成不可操作（保留返回键 退出ProgressDialog）
2.用一个线程clientThread执行数据的提交和返回

问题：考虑到ProgressDialog运行过程中，返回键的操作，应该终止clientThread的运行。

以下是我的代码，希望大家互相讨论，指出我的不足，最好能给出比较好的解决方案

代码区：

原文转载安卓教程网：http://android.662p.com/thread-318-1-1.html

btn_register.setOnClickListener(new View.OnClickListener() {  

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            if(doBeforeSubmit()){  

                try {
                    Log.v(TAG, "clientThread prepare01。。。:"+Thread.interrupted());
                    clienThread=new Thread(){
                        public void run() {
                            try {
                                Log.v(TAG, "clientThread prepare02。。。:"+Thread.interrupted());
                                while (!Thread.interrupted()) {
                                    Log.v(TAG, "clientThread starting。。。");
                                    MeApiCall meApiCall=new MeApiCallImpl();
                                    Me me=new Me();
                                    me.setMeEmail(et_register_account.getText().toString().trim());
                                    me.setMePwd(et_register_pwd.getText().toString().trim());
                                    me.setMeName(et_register_nickName.getText().toString().trim());                                       

                                    Log.v(TAG, "clientThread data loaded。。。");
                                    meApiCall.register(me);
                                    Log.v(TAG, "clientThread callback。。。");  

                                    handler.sendEmptyMessage(AppConfig.Register.SUCCESS_MSG);  

                                   clienThread.interrupt();   //中断线程
                                }
                            } catch (InterruptedException e) {
                                // TODO: handle exception
                                Log.v(TAG, "clientThread is interrupt");
                            }catch (Exception e) {
                                // TODO Auto-generated catch block
                                Log.v(TAG, "exception: "+e.getMessage());
                                handler.sendEmptyMessage(AppConfig.Register.FAIL_OTHER_MSG);
                                e.printStackTrace();
                            }
                        };  

                    };
                    Log.v(TAG, "progressDialog prepare01。。。:");
                    progressDialog=ProgressDialog.show(Register.this,
                                                       "",
                                                       "正在获取....",
                                                       true,
                                                       true,
                                                       new DialogInterface.OnCancelListener() {  

                                                        @Override
                                                        public void onCancel(DialogInterface dialog) {
                                                            // TODO Auto-generated method stub   

                                                                try {
                                                                    clienThread.interrupt();
                                                                    Log.v(TAG, "interrupt is success!");
                                                                } catch (Exception e) {
                                                                    // TODO Auto-generated catch block
                                                                    Log.v(TAG, "interrupt is fail!");
                                                                    e.printStackTrace();
                                                                }  

                                                        }
                                                    }
                                                      );
                    Log.v(TAG, "clientThread prepareing_end。。。");
                    clienThread.start();
                    //Log.v(TAG, "clientThread prepareing_end。。。");
                } catch (Exception e) {
                    // TODO Auto-generated catch block
                    Log.v(TAG, e.getMessage()+" 00");
                    e.printStackTrace();
                }  

            }  

        }
    });