在我的应用程序中，我有一个表单，该表单的所有字段都保存在SQLite数据库中，包括sync_state列。如果sync_state为0，则该项目不保存在联机数据库中，但是，如果sync_state为1，则将其保存在联机数据库中。我的仪表板上有一个按钮，该按钮列出了sync_state为0的所有SQLite行的列表，并将它们保存在在线MySQL数据库中。但是此按钮无法正常工作。有些行未保存，有些重复。我进行了很多搜索，但找不到任何解决方案。
用于创建要在线保存的列表的方法：
public List<FullModel> getAllDataforSync(){
SQLiteDatabase database =this.getWritableDatabase();
String query = "SELECT * FROM " + DatabaseHelper.TABLE_NAME + " where " + TABLE_COL35 + " = 0" ;
Cursor cursor = database.rawQuery(query, null);
List<FullModel> list = new ArrayList<>();
while (cursor.moveToNext()){
FullModel listModel = new FullModel(cursor.getString(1),cursor.getString(2),
cursor.getString(3),cursor.getString(4),cursor.getString(5),
cursor.getString(6),cursor.getBlob(7),cursor.getString(8),
cursor.getString(9),cursor.getLong(10),cursor.getLong(11),
cursor.getLong(12),cursor.getLong(13),cursor.getLong(14),cursor.getLong(15),
cursor.getLong(16),cursor.getLong(17),cursor.getLong(18),cursor.getLong(19),
cursor.getLong(20),cursor.getLong(21),cursor.getLong(22),cursor.getLong(23),
cursor.getLong(24),cursor.getLong(25),cursor.getLong(26),cursor.getLong(27),
cursor.getLong(28),cursor.getLong(29),cursor.getLong(30),cursor.getLong(31),
cursor.getInt(32));
listModel.setId(cursor.getInt(cursor.getColumnIndex(DatabaseHelper.TABLE_COL1)));
list.add(listModel);
}
return list;
}
在这里调用该方法：
builder.setPositiveButton("yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
if (checkNetworkConnection()){
allDataList = databaseHelper.getAllDataforSync();
Toast.makeText(DashBoardActivity.this, ""+allDataList.size(), Toast.LENGTH_SHORT).show();;
if (allDataList.size()==0){
AlertDialog.Builder builder2 = new AlertDialog.Builder(DashBoardActivity.this);
LayoutInflater inflater2 = getLayoutInflater();
View view2 = inflater2.inflate(R.layout.nodatatoshow_dialog_box, null);
builder2.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder2.setView(view2);
AlertDialog alertDialog = builder2.create();
alertDialog.show();
}else{
for (FullModel fullModel : allDataList) {
sname = fullModel.getSale_name();
sphone = fullModel.getSale_mobile();
scnic = fullModel.getSale_cnic();
bname = fullModel.getBuyer_name();
bmobile = fullModel.getBuyer_mobile();
bcnic = fullModel.getBuyer_cnic();
date = fullModel.getDate();
location = fullModel.getLocation();
picture = fullModel.getPicture();
goatQ = fullModel.getGoatQ();
goatR = fullModel.getGoatP();
goatT = fullModel.getGoatT();
sheepQ = fullModel.getSheepQ();
sheepR = fullModel.getSheepP();
sheepT = fullModel.getSheepT();
cowQ = fullModel.getCowQ();
cowR = fullModel.getCowP();
cowT = fullModel.getCowT();
camelQ = fullModel.getCamelQ();
camelR = fullModel.getCamelP();
camelT = fullModel.getCamelT();
horseQ = fullModel.getHorseQ();
horseR = fullModel.getHorseP();
horseT = fullModel.getHorseT();
donkeyQ = fullModel.getDonkeyQ();
donkeyR = fullModel.getDonkeyP();
donkeyT = fullModel.getDonkeyT();
buffQ = fullModel.getBufQ();
buffR = fullModel.getBufP();
buffT = fullModel.getBufT();
totalAm = fullModel.getTotalAm();
StringRequest stringRequest = new StringRequest(Request.Method.POST, SERVER_URL, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
try {
JSONObject jsonObject = new JSONObject(response);
String Response = jsonObject.getString("response");
if (Response.equals("OK")) {
Toast.makeText(DashBoardActivity.this, "Data saved in Application server", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(DashBoardActivity.this, "Data not saved" + Response, Toast.LENGTH_SHORT).show();
}
} catch (JSONException e) {
Toast.makeText(DashBoardActivity.this, "" + e.getMessage(), Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
}) {
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> params = new HashMap<>();
params.put("name", sname);
params.put("sale_mobile", sphone);
params.put("sale_cnic", scnic);
params.put("buyer_name", bname);
params.put("buyer_mobile", bmobile);
params.put("buyer_cnic", bcnic);
params.put("picture", String.valueOf(picture));
params.put("date", date);
params.put("location", location);
params.put("a_type", "");
params.put("price", "");
params.put("goat_q", "" + goatQ);
params.put("goat_r", "" + goatR);
params.put("goat_t", "" + goatT);
params.put("sheep_q", "" + sheepQ);
params.put("sheep_r", "" + sheepR);
params.put("sheep_t", "" + sheepT);
params.put("cow_q", "" + cowQ);
params.put("cow_r", "" + cowR);
params.put("cow_t", "" + cowT);
params.put("camel_q", "" + camelQ);
params.put("camel_r", "" + camelR);
params.put("camel_t", "" + camelT);
params.put("horse_q", "" + horseQ);
params.put("horse_r", "" + horseR);
params.put("horse_t", "" + horseT);
params.put("donkey_q", "" + donkeyQ);
params.put("donkey_r", "" + donkeyR);
params.put("donkey_t", "" + donkeyT);
params.put("buff_q", "" + buffQ);
params.put("buff_r", "" + buffR);
params.put("buff_t", "" + buffT);
params.put("total_am", "" + totalAm);
return params;
}
};
MySingleton.getInstance(DashBoardActivity.this).addToRequestQueue(stringRequest);
for (FullModel fullModel1 : allDataList) {
databaseHelper.updateSyncState(fullModel1.getId(), SYNC_STATE_OK);
}
}
}
}else{
AlertDialog.Builder builder1 = new AlertDialog.Builder(DashBoardActivity.this);
LayoutInflater inflater1 = getLayoutInflater();
View view1 = inflater1.inflate(R.layout.no_internet_dialog, null);
builder1.setPositiveButton("OK", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder1.setView(view1);
AlertDialog alertDialog = builder1.create();
alertDialog.show();
}
}
});
builder.setNegativeButton("no", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.cancel();
}
});
builder.setView(view);
builder.setCancelable(false);
AlertDialog alertDialog = builder.create();
alertDialog.setCanceledOnTouchOutside(false);
alertDialog.setCancelable(false);
alertDialog.show();
请帮助！
答案 0 :(得分：0)
您将列表作为单独的列表对象发送到服务器。 尝试仅按一个请求发送完整列表。 您可以参考以下链接：[https://stackoverflow.com/a/48782187/11469878][1]