この JSON 文字列を、emailAddress や電話番号などの各連絡先項目の個々の文字列に分割しようとしています。System.out.print を使用して、情報が文字列に適切に格納されているかどうかを確認しています。system.out には何も表示されず、発生するのは以下の logcat に表示されることだけです。
JSON 文字列:
{"items":[{"description":"payment confirmed","emailAddress":"abc@aqw.com","id":"Fri Aug 30 17:20:35 EDT 2013","nameFirst":"Bill","nameLast":"Sanders","phone":"5555555555","state":"KS","streetAddress":"123 Rick Dr","zipCode":"44444","kind":"contactinfoendpoint#resourcesItem"},{"description":"payment confirmed","emailAddress":"qwe@msn.com","id":"Fri Aug 30 17:21:37 EDT 2013","nameFirst":"Frank","nameLast":"Lloyd","phone":"5554567896","state":"KY","streetAddress":"999 Rock St","zipCode":"44555","kind":"contactinfoendpoint#resourcesItem"}],"kind":"contactinfoendpoint#resources","etag":"\"NiDXI3T89oRrAPGJAhgGQje1Z0w/z0W4p01mjHc5cNgcOt3Kb_1xo8E\""}
これがログキャットです。
09-03 14:51:18.755: W/System.err(27991): org.json.JSONException: No value for emailAddress
09-03 14:51:18.755: W/System.err(27991): at org.json.JSONObject.get(JSONObject.java:354)
09-03 14:51:18.755: W/System.err(27991): at org.json.JSONObject.getString(JSONObject.java:510)
09-03 14:51:18.755: W/System.err(27991): at com.indeeditis.FinderActivity$EndpointsTask.doInBackground(FinderActivity.java:112)
09-03 14:51:18.765: W/System.err(27991): at com.indeeditis.FinderActivity$EndpointsTask.doInBackground(FinderActivity.java:1)
09-03 14:51:18.765: W/System.err(27991): at android.os.AsyncTask$2.call(AsyncTask.java:287)
09-03 14:51:18.765: W/System.err(27991): at java.util.concurrent.FutureTask.run(FutureTask.java:234)
09-03 14:51:18.765: W/System.err(27991): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:230)
09-03 14:51:18.765: W/System.err(27991): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080)
09-03 14:51:18.765: W/System.err(27991): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573)
09-03 14:51:18.765: W/System.err(27991): at java.lang.Thread.run(Thread.java:856)
私のプログラム:
public class FinderActivity extends ListActivity {
private static final String TAG_ID = "id";
private static final String TAG_FIRSTNAME = "nameFirst";
private static final String TAG_LASTNAME = "nameLast";
private static final String TAG_EMAIL = "emailAddress";
private static final String TAG_ADDRESS = "streetAddress";
private static final String TAG_STATE = "state";
private static final String TAG_PHONE = "phone";
JSONArray contacts = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
new EndpointsTask().execute(getApplicationContext());
}
public class EndpointsTask extends AsyncTask<Context, Integer, Long> {
public Long doInBackground(Context... contexts) {
Contactinfoendpoint.Builder endpointBuilder = new Contactinfoendpoint.Builder(
AndroidHttp.newCompatibleTransport(),
new JacksonFactory(),
new HttpRequestInitializer() {
public void initialize(HttpRequest httpRequest) { }
});
Contactinfoendpoint endpoint = CloudEndpointUtils.updateBuilder(
endpointBuilder).build();
try {
String apples = endpoint.listContactInfo().execute().toString();
JSONObject jObject = new JSONObject(apples);
JSONArray jsonArr = jObject.getJSONArray("items");
for(int i =0 ; i<jsonArr.length() ;i++ ){
JSONObject jsonObj1 = jsonArr.getJSONObject(i);
// Storing each json item in variable
String id = jsonObj1.getString(TAG_ID);
String nameFirst1 = jsonObj1.getString(TAG_FIRSTNAME);
String nameLast1 = jsonObj1.getString(TAG_LASTNAME);
String emailAddress1 = jsonObj1.getString(TAG_EMAIL);
String streetAddress1 = jsonObj1.getString(TAG_ADDRESS);
String phone1 = jsonObj1.getString(TAG_PHONE);
//test to see if made it to string
System.out.print(nameFirst1);
System.out.print(nameLast1);
}
} catch (IOException e) {
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return (long) 0;
}
}
}
logcat のタグ。文字列の内容を確認するループの前。
09-03 15:13:57.690: D/YOUR_TAG(30179): [{"streetAddress":"123 Rick Dr","id":"Fri Aug 30 17:20:35 EDT 2013","phone":"5555555555","nameLast":"Sanders","nameFirst":"Bill","description":"payment confirmed","zipCode":"44444","state":"KS","emailAddress":"abc@aqw.com","kind":"contactinfoendpoint#resourcesItem"},{"streetAddress":"999 Rock St","id":"Fri Aug 30 17:21:37 EDT 2013","phone":"5554567896","nameLast":"Lloyd","nameFirst":"Frank","description":"payment confirmed","zipCode":"44555","state":"KY","emailAddress":"qwe@msn.com","kind":"contactinfoendpoint#resourcesItem"},{"id":"Sat Aug 31 12:46:33 EDT 2013","nameLast":"j","nameFirst":"j","kind":"contactinfoendpoint#resourcesItem","description":"payment confirmed"},{"id":"Sat Aug 31 14:33:03 EDT 2013","emailAddress":"c","nameLast":"b","nameFirst":"a","kind":"contactinfoendpoint#resourcesItem","description":"payment confirmed"}]
OK、データストアから後のエントリを削除しました。現在、エラーは発生していませんが、探しているシステム アウトはありません。