java程序员-c

摘要： //在不支持多点触屏的设备上实现地图的放大缩小 //开启内置缩放控制,在地图下方显示2个缩放按钮 Private MapView mapView=... mapView.setBulitInZoomControls(true); //设置地图等级 mapView.setZoom(12); //通过编程方式控制 获得MapController对象 MapController mc=mapView.getController(); 放大缩小分别利用MapController的zoomIn()和zoomOut()方法 改变地图视图 mapView.setSatelli... 阅读全文

摘要： LocationManager locationManager = (LocationManager)this.getSystemService(Context.LOCATION_SERVICE); //定义一个监听器来响应位置的更新 LocationListener locationListener = new LocationListener() { public void onLocationChanged(Location location) { useNewLocation(location); } public voi... 阅读全文

摘要： 以get方式发送HTTP请求:private Thread getThread; getThread = new Thread() { public void run() { HttpClient client = new DefaultHttpClient(); HttpGet getMethod = new HttpGet(REQUEST_URL); HttpResonse response = null; try { response = clien... 阅读全文

摘要： 写文件: FileOutputStream out = null; try { out = openFileOutput(filename, MODE_PRIVATE); byte[] content = (写入的文本).getBytes(); out.write(content); } catch(Exception e) { e.printStackTrace(); } finally { if(out != null) { try { out.close(); } ... 阅读全文

摘要： Activity之间的消息传递:Activity1: Intent intent=new intent(Activity1.this,Activity2.clas); Bundle data=new data(); data.putString("name",name); intent.putExtras(data); StartActivity(intent); Activity2: Intent intent=getIntent(); Bundle data=intent.getExtras(); String name=data.getString("nam 阅读全文