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在我的React-native应用程序中我试图在我的listenForItems
函数中调用另一个函数,但不断收到错误this.populateArray is not a function. In 'this.populateArray(solutions)', this.populateArray is undefined.
我在其他类中执行此操作,并且它正在工作,但出于某种原因,它在此处不起作用。有什么我失踪?在另一个函数内反应本地故障调用函数?
populateArray: function(solutions) {
var completed = [];
var inProgress;
for (var i = 0; i < solutions.length; i++) {
if (solutions[i].completed == 0) {
inProgress = solutions[i].id;
}
else {
completed.push(solutions[i].id);
}
}
},
listenForItems: function(cluesRef) {
var solutions = [];
userSolutionsRef.orderByChild('user_id').startAt(0).endAt(0).once('value', function(snap){
var solution = snap.val();
for (var i = 0; i < solution.length; i++) {
if (solution[0].hunt_id == 0) {
solutions.push(solution[0]);
}
}
this.populateArray(solutions);
});
},