我解析了json數據(cityName和cityId),只想在微調器中顯示城市名稱,但在所選的微調項目上,所選城市名稱以及城市ID必須繼續下一個使用意圖的活動...我無法在微調器中獲得所選城市名稱的同一cityId。要獲得與spinner中所選城市名稱相同的cityId
請與例如任何建議...謝謝
我解析了json數據(cityName和cityId),只想在微調器中顯示城市名稱,但在所選的微調項目上,所選城市名稱以及城市ID必須繼續下一個使用意圖的活動...我無法在微調器中獲得所選城市名稱的同一cityId。要獲得與spinner中所選城市名稱相同的cityId
請與例如任何建議...謝謝
就結帳this教程,並嘗試這樣,它會幫助你:
public class MainActivity extends Activity {
JSONObject jsonobject;
JSONArray jsonarray;
ProgressDialog mProgressDialog;
ArrayList<String> worldlist;
ArrayList<WorldPopulation> world;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Download JSON file AsyncTask
new DownloadJSON().execute();
}
// Download JSON file AsyncTask
private class DownloadJSON extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... params) {
// Locate the WorldPopulation Class
world = new ArrayList<WorldPopulation>();
// Create an array to populate the spinner
worldlist = new ArrayList<String>();
// JSON file URL address
jsonobject = JSONfunctions
.getJSONfromURL("http://www.androidbegin.com/tutorial/jsonparsetutorial.txt");
try {
// Locate the NodeList name
jsonarray = jsonobject.getJSONArray("worldpopulation");
for (int i = 0; i < jsonarray.length(); i++) {
jsonobject = jsonarray.getJSONObject(i);
WorldPopulation worldpop = new WorldPopulation();
worldpop.setRank(jsonobject.optString("rank"));
worldpop.setCountry(jsonobject.optString("country"));
worldpop.setPopulation(jsonobject.optString("population"));
worldpop.setFlag(jsonobject.optString("flag"));
world.add(worldpop);
// Populate spinner with country names
worldlist.add(jsonobject.optString("country"));
}
} catch (Exception e) {
Log.e("Error", e.getMessage());
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Void args) {
// Locate the spinner in activity_main.xml
Spinner mySpinner = (Spinner) findViewById(R.id.my_spinner);
// Spinner adapter
mySpinner
.setAdapter(new ArrayAdapter<String>(MainActivity.this,
android.R.layout.simple_spinner_dropdown_item,
worldlist));
// Spinner on item click listener
mySpinner
.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> arg0,
View arg1, int position, long arg3) {
// TODO Auto-generated method stub
// Locate the textviews in activity_main.xml
TextView txtrank = (TextView) findViewById(R.id.rank);
TextView txtcountry = (TextView) findViewById(R.id.country);
TextView txtpopulation = (TextView) findViewById(R.id.population);
// Set the text followed by the position
txtrank.setText("Rank : "
+ world.get(position).getRank());
txtcountry.setText("Country : "
+ world.get(position).getCountry());
txtpopulation.setText("Population : "
+ world.get(position).getPopulation());
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
});
}
}
}
我認爲這一定會幫助我,我會嘗試你的答案爲我的代碼,並儘快讓你知道..謝謝兄弟 – Shubham
@ShubhamUpadhyay接受它..它幫助 –
了什麼你試過這麼遠嗎? – Selvin
我想發送城市名稱和城市id到下一個活動,但是當我選擇解析城市名稱的微調我不geting正確的城市編號 – Shubham
很高興幫助你快樂編碼 –