public class MainActivity
extends AppCompatActivity {
private ListView
lv;
private List<MenuInfo.ResultBean.DataBean.StepsBean>
list;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.
activity_main);
lv= (ListView) findViewById(R.id.
listview);
getData(
"http://apis.juhe.cn/cook/query.php");
}
private void getData(String path){
new AsyncTask<String, Void, String>() {
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
Gson gson=
new Gson();
MenuInfo menu=gson.fromJson(s,MenuInfo.
class);
list=menu.getResult().getData().get(
0).getSteps();
lv.setAdapter(
new MyAdapter());
}
@Override
protected String doInBackground(String... strings) {
try {
String path=strings[
0];
URL url=
new URL(path);
HttpURLConnection connection= (HttpURLConnection) url.openConnection();
connection.setRequestMethod(
"POST");
OutputStream os=connection.getOutputStream();
os.write(
"key=4866477692b8491f120e3608db277cb0&menu=红烧肉".getBytes());
os.flush();
connection.setReadTimeout(
5000);
connection.setConnectTimeout(
5000);
int code=connection.getResponseCode();
if(code==
200){
InputStream is=connection.getInputStream();
String json=StreamTools.
readNetworks(is);
return json;
}
}
catch (Exception e) {
e.printStackTrace();
}
return null;
}
}.execute(path);
}
class MyAdapter
extends BaseAdapter{
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(
int i) {
return list.get(i);
}
@Override
public long getItemId(
int i) {
return i;
}
@Override
public View getView(
int i, View view, ViewGroup viewGroup) {
ViewHolder holder;
if (view==
null){
holder=
new ViewHolder();
view=View.
inflate(MainActivity.
this,R.layout.
items,
null);
holder.
tvContent=view.findViewById(R.id.
tvContent);
view.setTag(holder);
}
else{
holder= (ViewHolder) view.getTag();
}
holder.
tvContent.setText(
list.get(i).getStep());
return view;
}
}
class ViewHolder{
TextView
tvContent;
}
}
public class StreamTools {
public static String readNetworks(InputStream is)
throws Exception{
ByteArrayOutputStream baos=
new ByteArrayOutputStream();
int len=
0;
byte[] buffer=
new byte[
1024];
while ((len=is.read(buffer))!=-
1){
baos.write(buffer,
0,len);
}
is.close();
baos.close();
return baos.toString();
}
}
