更新按钮上面文字，并根据变化判断活动

startLocation = (Button) findViewById(R.id.addfence);

startLocation.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                if (startLocation.getText().toString().equals(getString(R.string.startlocation))) {
                    LocationResult.setVisibility(View.VISIBLE);
                    //locationService.start();// 定位SDK
                    // start之后会默认发起一次定位请求，开发者无须判断isstart并主动调用request
                    Date date = new Date();
                    LocationActivity.workid = new SimpleDateFormat("MMddHHmm").format(date);
                    Intent idintent = new Intent(LocationActivity.this, MyLocationService.class);
                    idintent.putExtra("workid", LocationActivity.workid);
                    startService(idintent);
                    startLocation.setText(getString(R.string.stoplocation));
                } else {
                    //locationService.stop();
                    stopService(new Intent(LocationActivity.this, MyLocationService.class));
                    getdialog();
                    startLocation.setText(getString(R.string.startlocation));
                    LocationResult.setVisibility(View.INVISIBLE);
                }
            }
        });