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Android 请求网络接口实现方法

2018年11月01日  | 移动技术网IT编程  | 我要评论

黄金理财产品,国足新加坡,宫锁珠帘李金桂

public class fragment01 extends fragment {

private static final string tag = "fragment01----";

private myhandler myhandler = new myhandler();

//判断网络状态

private final static int success = 0;

private final static int error = 1;

private listview listview;

@nullable

@override

public view oncreateview(@nonnull layoutinflater inflater, @nullable viewgroup container, @nullable bundle savedinstancestate) {

view view = inflater.inflate(r.layout.fragment01_layout, container, false);

listview = view.findviewbyid(r.id.fragment01_listview);

return view;

}

@override

public void onactivitycreated(@nullable bundle savedinstancestate) {

super.onactivitycreated(savedinstancestate);

//4.获取网络数据

new thread() {

@override

public void run() {

try {

url u = new url(httpconfig.one_url);

httpurlconnection connection = (httpurlconnection) u.openconnection();

connection.setconnecttimeout(5000);

if (connection.getresponsecode() == 200) {

inputstream inputstream = connection.getinputstream();

//5.封装工具类

string json = commenutils.inputstream2string(inputstream);

//6.使用handler,发送数据

message message = myhandler.obtainmessage();

message.what = success;

message.obj = json;

myhandler.sendmessage(message);

}

} catch (exception e) {

e.printstacktrace();

}

}

}.start();

}

class myhandler extends handler {

@override

public void handlemessage(message msg) {

switch (msg.what) {

case success:

//成功

string json = (string) msg.obj;

log.d(tag, "handlemessage: " + json);

//导包gson

gson gson = new gson();

//如果json就是一个纯数组的解析方式

type listtype = new typetoken>(){}.gettype();

linkedlist list = gson.fromjson(json, listtype);//7.根据接口，生成javabean

//8.书写adapter进行显示

list item = list.get(0).getitem();

myadapter myadapter = new myadapter(getactivity(), item);

listview.setadapter(myadapter);

break;

}

}

}

}

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