List 连续流到列表,无重复
我有一个数据流,我想把它转换成键值对的列表/映射。我想将每个“故障”与相应的“严重性”配对,并将配对显示为列表。我的问题是我的列表不断增长,我无法检查正在添加的值是否已经在列表中 代码:List 连续流到列表,无重复,list,flutter,listview,stream,stream-builder,List,Flutter,Listview,Stream,Stream Builder,我有一个数据流,我想把它转换成键值对的列表/映射。我想将每个“故障”与相应的“严重性”配对,并将配对显示为列表。我的问题是我的列表不断增长,我无法检查正在添加的值是否已经在列表中 代码: 在方法的开头添加severityList.clear()和faultList.clear()行_buildFaultOutput(快照)谢谢!这正是我所需要的!您知道如何并排显示faultList和severity list中的每个项目吗?在listview中返回Row小部件,并将faultList项目和sev
在方法的开头添加severityList.clear()和faultList.clear()行_buildFaultOutput(快照)谢谢!这正是我所需要的!您知道如何并排显示faultList和severity list中的每个项目吗?在listview中返回Row小部件,并将faultList项目和severity列表项目作为子项放置
List<int> severityList = [0];
List faultItems = [0];
var lastFault;
Widget _buildFaultOutput(snapshot) {
//New growable lists with 0 set as the first value to prevent error
var msg = snapshot.data;
print(msg);
var faultList = msg["fault_list"];
print("faultList: $faultList");
var numberOfFaults = faultList.length;
print("Number of faults: $numberOfFaults");
if (faultList.length == 0) {
return Text("None");
} else {
int i = 0;
for (var i = 0; i < faultList.length; i++) {
// print(faults);
// print("i: $i");
var faults = faultList[i];
var motorCurrent = faults["fault"];
var severity = faults["severity"];
if (motorCurrent != lastFault) {
faultItems.insert(i, motorCurrent);
severityList.insert(i, severity);
print('added ${faultItems[i]}, severity: ${severityList[i]}');
lastFault = motorCurrent;
} else {}
//TODO: add list of faults with key/value pairs (fault:severity): Text of "motorCurrent" in color of severity
//TODO: Print each individual item from list with severity
// return Text(
// "Number of Faults: ${faultList.length}\n$faultItems\nSeverity: ${severityList[i]}");
}
}
return Text(
"Number of Faults: ${faultList.length}\n$faultItems\nSeverity: $severityList");
}
I/flutter (21022): {fault_list: [{fault: voltage fault, process_name: BetaFirmware::bmsVoltageFaultCallback(), severity: 0, time_stamp: {secs: 1603209904, nsecs: 581818990}}, {fault: motor temp: 2, process_name: BetaFirmwareBase::checkMotorSafety(), severity: 2, time_stamp: {secs: 1603209905, nsecs: 575800930}}, {fault: motor temp: 5, process_name: BetaFirmwareBase::checkMotorSafety(), severity: 2, time_stamp: {secs: 1603209905, nsecs: 575800930}}, {fault: motor temp: 6, process_name: BetaFirmwareBase::checkMotorSafety(), severity: 2, time_stamp: {secs: 1603209905, nsecs: 620800930}}, {fault: motor temp: 3, process_name: BetaFirmwareBase::checkMotorSafety(), severity: 2, time_stamp: {secs: 1603209905, nsecs: 620800930}}, {fault: motor temp: 9, process_name: BetaFirmwareBase::checkMotorSafety(), severity: 2, time_stamp: {secs: 1603209905, nsecs: 620800930}}, {fault: motor temp: 4, process_name: BetaFirmwareBase::checkMotorSafety(), severity: 2, time_stamp: {secs: 1603209905, nsecs: 620800930}}, {fault: motor temp: 7, process_na
I/flutter (21022): faultList: [{fault: voltage fault, process_name: BetaFirmware::bmsVoltageFaultCallback(), severity: 0, time_stamp: {secs: 1603209904, nsecs: 581818990}}, {fault: motor temp: 2, process_name: BetaFirmwareBase::checkMotorSafety(), severity: 2, time_stamp: {secs: 1603209905, nsecs: 575800930}}, {fault: motor temp: 5, process_name: BetaFirmwareBase::checkMotorSafety(), severity: 2, time_stamp: {secs: 1603209905, nsecs: 575800930}}, {fault: motor temp: 6,