android三個選項的對話框

new AlertDialog.Builder(DataMeasureActivity1.this)
                            .setTitle("舒適提示")
                            .setMessage("開始接收數據 ?")
                            .setPositiveButton("開始", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                    timer = new Timer(); //計時任務開始
                                    timer.schedule(new MyTimeTask(), 100, 10000);
                                    recvFlagImg.setImageDrawable(DataMeasureActivity1.this.getResources().getDrawable(R.drawable.an_button_off));
                                }
                            })
                            .setNeutralButton("中止", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {
                                    recvFlagImg.setImageDrawable(DataMeasureActivity1.this.getResources().getDrawable(R.drawable.an_button_on));
                                    timer.cancel();
                                }
                            })
                            .setNegativeButton("取消", new DialogInterface.OnClickListener() {
                                public void onClick(DialogInterface dialog, int which) {

                                }
                           }).show();