Android开发日记（三）

 protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.adshow);
         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
         intent = getIntent();
         map = (HashMap<String, Object>) intent.getSerializableExtra("map");
         getPostDetailsViaNewThread();
     }

 private void getPostDetailsViaNewThread() {

         // TODO Auto-generated method stub
         new Thread(new Runnable() {
             @Override
             public void run() {
                 try {
                     postdetailsJsonArray = postService.getPostDetails("5826");
                     if (postdetailsJsonArray != null) {
                         handler.sendEmptyMessage(0);
                     } else {
                         return;
                     }
                 } catch (Exception e) {
                     // TODO: handle exception
                     e.printStackTrace();
                 }
             }
         }).start();
     }
 private Handler handler = new Handler() {
         @Override
         // 当有消息发送出来的时候就执行Handler的这个方法
         public void handleMessage(Message msg) {
             super.handleMessage(msg);
             initView();
         }
     };
 private void initView(){
     //postdetailsJsonArray = postService.getPostDetails("5826");
     JSONObject firstJsonObject = postdetailsJsonArray.optJSONObject(0);
     TextView textView_JobTitle=(TextView)findViewById(R.id.textView_JobTitle);
     TextView textView_JobRelease=(TextView)findViewById(R.id.textView_JobRelease);
     TextView textView_JobDetail = (TextView) findViewById(R.id.textView_JobDetail);
     TextView TextView_JobTime = (TextView) findViewById(R.id.TextView_JobTime);
     //JobTitle=map.get("jobTitle").toString();
     //JobTime=map.get("jobTime").toString();
     //JobDetail = map.get("jobDetail").toString();
     //JobRelease = map.get("releasetime").toString();
     textView_JobTitle.setText(firstJsonObject.optString("posttitle"));
     textView_JobRelease.setText(firstJsonObject.optString("date"));
     //textView_JobDetail.setText(JobDetail);
     //TextView_JobTime.setText(JobTime);
 }

要实现从服务器端数据库获取数据写到Android端的过程：

先调用onCreate()方法打开XML，

在调用getPostDetailsViaNewThread()线程

使用postService中定义的方法getPostDetails("5826")获得服务端传过来的JSON数组对象

postdetailsJsonArray = postService.getPostDetails("5826");

转到Handler()方法，在其中调用initView();

JSONObject firstJsonObject = postdetailsJsonArray.optJSONObject(0);定义JSON对象

initView()中用textView_JobTitle.setText(firstJsonObject.optString("posttitle"));把JSON对象写到XML对应的控件中。