我是一個關於Android編程:(如何顯示JSON數據列表視圖中與Retrofit2
我不知道設置列表視圖的數據顯示 如何在列表視圖顯示數據。
MainActivity新手。 java的
public class MainActivity extends AppCompatActivity {
private static final String TAG = "fong";
ListView listView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView) findViewById(R.id.listView);
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(UdacityService.BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
UdacityService service = retrofit.create(UdacityService.class);
Call<UdacityCatalog> requestCatalog = service.listCatalog();
requestCatalog.enqueue(new Callback<UdacityCatalog>() {
@Override
public void onResponse(Call<UdacityCatalog> call, Response<UdacityCatalog> response) {
if (!response.isSuccessful()) {
Log.i(TAG,"Errorr: " +response.code());
}else{
UdacityCatalog catalog =response.body();
for (Course c : catalog.courses){
Log.i(TAG,c.title);
Log.i(TAG,"--------------");
}
}
}
@Override
public void onFailure(Call<UdacityCatalog> call, Throwable t) {
Log.e(TAG,"Errorr: " + t.getMessage());
}
});
}
}
我要顯示在ListView控件數據c.title
Log.i(TAG,c.title)
顯示
I/fong: Richard Kalehoff
I/fong: Firebase Analytics: iOS
I/fong: Firebase Analytics: Android
感謝侑幫助:)
感謝您的幫助!但我得到'this.courses.add(c.title)'行的錯誤;''courses'無法解析符號'課程' –
您必須在您的活動中聲明ListView變量,您可以更改它的名稱。 –
對不起還是錯誤 –