Flutter Only valid value is 0: 1 If i remove the 'value': - flutter

Question

I am simply splitting the values of string but it's showing the error
My code
List<Map<String, String>> divideString(String wording) {
final policies = wording.split('|').where((w) => w != '');
var displayData = <Map<String, String>>[];
policies.forEach((policy) {
final splited = policy.split('=');
final displayPolicy = <String, String>{
'name': splited[0],
'value': splited[1]
};
displayData.add(displayPolicy);
});
return displayData;
}
if I remove 'value': splited[1] its working fine I think in some places 'value': splited[1] is empty so maybe its showing error?
String something looks like this
I/flutter (14910): INPATIENT & DAYCARE||||||||||PRE-AUTHORIZATION=MANDATORY AT NON-PANEL HOSPITALS|||||HOSPITAL NETWORK=220+ FACILITIES NATIONWIDE|||||EMERGENCY HOTLINE NOS.=ROUND THE CLOCK|||||ACCIDENTAL EMERGENCIES=25% ENHANCEMENT IN AVAILABLE INPATIENT LIMITS|||||PRE-HOSPITALIZATION=30 DAYS BEFORE HOSPITALIZATION|||||POST-HOSPITALIZATION=30 DAYS AFTER HOSPITALIZATION|||||DAYCARE PROCEDURES=UNLIMITED|||||ICU CONFINEMENT=UNLIMITED|||||DENTAL TREATMENT=WHEN REQD. DUE TO ACCIDENT FOR PAIN RELIEF ONLY|||||LOCAL AMBULANCE=TO AND BETWEEN HOSPITALS|||||CATARACT SURGERY=COVERED WITH STANDARD FOLDABLE LENS ONLY|||||SPECIALIZED INVESTIGATIONS=COVERED e.g., CT Scan, MRI, ECHO etc.|||||VACCINATIONS=1ST DOSE COVERED AT BIRTH|||||MATERNITY BENEFITS||||||||||PRE / POST NATAL EXPENSES=10% OF MAT. or PKR 2,000/- WHICHEVER IS LESS|||||CIRCUMCISION BENEFIT=10% OF MAT. or PKR 2,000/- WHICHEVER IS LESS|||||DELIVERY BY MIDWIFE PKR.5000/-|||||SPECIAL BENEFITS||||||||||HEPATITIS TREATMENT=COVERED|||||CONGENITAL CONDITIONS=NOT COVERED|||||PRE EXISTI
What I am doing is break the line when this symbol shows "|" and split it when "=" symbol show but the issue is somewhere = sign isn't available

Answer 1

Try this:
List<Map<String, String>> divideString(String wording) {
List<String> policies = wording.split('|');
List<Map<String, String>> displayData = [];
policies.forEach((policy) {
final List<String> splited = policy.split('=');
// If an '=' sign is present, the length will be == 2
if(splited.length == 2){
final displayPolicy = <String, String>{
'name': splited[0],
'value': splited[1]
};
displayData.add(displayPolicy);
}
});
print('======= output, line by line =======');
displayData.forEach((item) => print(item));
print('\n');
print('======= returned data, unformatted =======');
print(displayData);
return displayData;
}
Output:
======= output, line by line =======
{name: PRE-AUTHORIZATION, value: MANDATORY AT NON-PANEL HOSPITALS}
{name: HOSPITAL NETWORK, value: 220+ FACILITIES NATIONWIDE}
{name: EMERGENCY HOTLINE NOS., value: ROUND THE CLOCK}
{name: ACCIDENTAL EMERGENCIES, value: 25% ENHANCEMENT IN AVAILABLE INPATIENT LIMITS}
{name: PRE-HOSPITALIZATION, value: 30 DAYS BEFORE HOSPITALIZATION}
{name: POST-HOSPITALIZATION, value: 30 DAYS AFTER HOSPITALIZATION}
{name: DAYCARE PROCEDURES, value: UNLIMITED}
{name: ICU CONFINEMENT, value: UNLIMITED}
{name: DENTAL TREATMENT, value: WHEN REQD. DUE TO ACCIDENT FOR PAIN RELIEF ONLY}
{name: LOCAL AMBULANCE, value: TO AND BETWEEN HOSPITALS}
{name: CATARACT SURGERY, value: COVERED WITH STANDARD FOLDABLE LENS ONLY}
{name: SPECIALIZED INVESTIGATIONS, value: COVERED e.g., CT Scan, MRI, ECHO etc.}
{name: VACCINATIONS, value: 1ST DOSE COVERED AT BIRTH}
{name: PRE / POST NATAL EXPENSES, value: 10% OF MAT. or PKR 2,000/- WHICHEVER IS LESS}
{name: CIRCUMCISION BENEFIT, value: 10% OF MAT. or PKR 2,000/- WHICHEVER IS LESS}
{name: HEPATITIS TREATMENT, value: COVERED}
{name: CONGENITAL CONDITIONS, value: NOT COVERED}
======= returned data, unformatted =======
[{name: PRE-AUTHORIZATION, value: MANDATORY AT NON-PANEL HOSPITALS}, {name: HOSPITAL NETWORK, value: 220+ FACILITIES NATIONWIDE}, {name: EMERGENCY HOTLINE NOS., value: ROUND THE CLOCK}, {name: ACCIDENTAL EMERGENCIES, value: 25% ENHANCEMENT IN AVAILABLE INPATIENT LIMITS}, {name: PRE-HOSPITALIZATION, value: 30 DAYS BEFORE HOSPITALIZATION}, {name: POST-HOSPITALIZATION, value: 30 DAYS AFTER HOSPITALIZATION}, {name: DAYCARE PROCEDURES, value: UNLIMITED}, {name: ICU CONFINEMENT, value: UNLIMITED}, {name: DENTAL TREATMENT, value: WHEN REQD. DUE TO ACCIDENT FOR PAIN RELIEF ONLY}, {name: LOCAL AMBULANCE, value: TO AND BETWEEN HOSPITALS}, {name: CATARACT SURGERY, value: COVERED WITH STANDARD FOLDABLE LENS ONLY}, {name: SPECIALIZED INVESTIGATIONS, value: COVERED e.g., CT Scan, MRI, ECHO etc.}, {name: VACCINATIONS, value: 1ST DOSE COVERED AT BIRTH}, {name: PRE / POST NATAL EXPENSES, value: 10% OF MAT. or PKR 2,000/- WHICHEVER IS LESS}, {name: CIRCUMCISION BENEFIT, value: 10% OF MAT. or PKR 2,000/- WHICHEVER IS LESS}, {name: HEPATITIS TREATMENT, value: COVERED}, {name: CONGENITAL CONDITIONS, value: NOT COVERED}]

Answer 2

modifiy your code like this to see where the problem is.
List<Map<String, String>> divideString(String wording) {
final policies = wording.split('|').where((w) => w != '');
var displayData = <Map<String, String>>[];
policies.forEach((policy) {
if(policy.contains('=')){
final splited = policy.split('=');
final displayPolicy = <String, String>{
'name': splited[0],
'value': splited[1]
};
displayData.add(displayPolicy);
}else{
print('no suitable data in ' + policy);
}
});
return displayData;
}