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。