我在头等舱请求来自Facebook的信息：
new GraphRequest(AccessToken.getCurrentAccessToken(), "/me/posts", null, HttpMethod.GET,
new GraphRequest.Callback() {
public void onCompleted(GraphResponse response) {
/* handle the result */
JSONObject json = response.getJSONObject();
JSONArray arr;
try {
arr = json.getJSONArray("data");
for(int i =0;i<4;i++){
JSONObject json_obj = arr.getJSONObject(i);
LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
String provider = locationManager.getBestProvider(criteria, true);
Location location = locationManager.getLastKnownLocation(provider);
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, TimeDisplayTimerTask.this);
try {
if(json_obj!=null){
if(location!=null){
String postDate = DatabaseConvertMethodsHelper.convertFaceBookDate(
json_obj.getString("created_time"));
String statusText = json_obj.getString("message");
String address = "None";
String detailUrl = "http://jv-it.com";
float lat = (float)location.getLatitude();
float lng = (float)location.getLatitude();
String accountId = json_obj.getString("id");
SNSPostModel snsPostModel = new SNSPostModel(postDate, statusText, address,
detailUrl, lat, lng, accountId);
snsPostDatabaseHelper.insertSNSPostToDatabase(snsPostModel);
Log.e("TEST", accountId);
Log.e("TEST", postDate);
}
}
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}).executeAsync();
}
我将它添加到第二类中的数据库：
public boolean insertSNSPostToDatabase(SNSPostModel snsPostModel){
ContentValues values = new ContentValues();
Log.e("TEST", ""+snsPostModel.getPostDate());
values.put("post_date", snsPostModel.getPostDate());
values.put("status_text", snsPostModel.getStatusText());
values.put("address", snsPostModel.getAddress());
values.put("detail_url", snsPostModel.getDetailUrl());
values.put("lat", snsPostModel.getLat());
values.put("lng", snsPostModel.getLng());
values.put("account_id", snsPostModel.getAccountId());
myDataBase.insert("sns_posts", null, values);
return true;
}
但我不知道为什么会出错：
07-16 02:01:06.127: E/SQLiteDatabase(12020): Error inserting status_text=null detail_url=null lng=0.0 account_id=null address=null lat=0.0 post_date=null
07-16 02:01:06.127: E/SQLiteDatabase(12020): android.database.sqlite.SQLiteConstraintException: sns_posts.account_id may not be NULL (code 19)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at android.database.sqlite.SQLiteConnection.nativeExecuteForLastInsertedRowId(Native Method)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at android.database.sqlite.SQLiteConnection.executeForLastInsertedRowId(SQLiteConnection.java:775)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at android.database.sqlite.SQLiteSession.executeForLastInsertedRowId(SQLiteSession.java:788)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at android.database.sqlite.SQLiteStatement.executeInsert(SQLiteStatement.java:86)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1469)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1339)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at com.itmo.lifelog_2015.data.remote.SNSPostDatabaseHelper.insertSNSPostToDatabase(SNSPostDatabaseHelper.java:61)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at com.itmo.lifelog_2015.service.LoginFacebook$TimeDisplayTimerTask$1$1.onCompleted(LoginFacebook.java:135)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at com.facebook.GraphRequest$5.run(GraphRequest.java:1243)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at android.os.Handler.handleCallback(Handler.java:615)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at android.os.Handler.dispatchMessage(Handler.java:92)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at android.os.Looper.loop(Looper.java:137)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at android.app.ActivityThread.main(ActivityThread.java:4745)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at java.lang.reflect.Method.invokeNative(Native Method)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at java.lang.reflect.Method.invoke(Method.java:511)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
07-16 02:01:06.127: E/SQLiteDatabase(12020): at dalvik.system.NativeStart.main(Native Method)
07-16 02:01:06.127: E/TEST(12020): 929043207145744_934981236551941
07-16 02:01:06.127: E/TEST(12020): 2015-07-16
07-16 02:01:06.131: E/TEST(12020): null
如您所见，我可以在第一堂课中获得ID和日期
07-16 02:01:06.127: E/TEST(12020): 929043207145744_934981236551941
07-16 02:01:06.127: E/TEST(12020): 2015-07-16
但是我在第二课中得到零，请告诉我出了什么问题？
public class SNSPostModel {
private String mPostDate;
private String mStatusText;
private String mAddress;
private String mDetailUrl;
private float mLat;
private float mLng;
private String mAccountId;
public SNSPostModel(){
}
public SNSPostModel(String mPostDate,String mStatusText,String mAddress,String mDetailUrl,
float mLat,float mLng,String mAccountId){
}
答案 0 :(得分：0)
您缺少构造函数中的初始化
public SNSPostModel(String mPostDate,String mStatusText,String mAddress,String mDetailUrl,
float mLat,float mLng,String mAccountId){
// initialize like this
this. mAccountId= mAccountId;
.....
}