我无法将值添加到<!-- create a custom component my-form -->
<dom-module id="my-form">
<template>
<form is="iron-form" id="form" method="post">
<paper-input name="name" label="name" id="name"></paper-input>
<paper-button raised on-click="submitForm">Submit</paper-button>
</form>
</template>
<script type="text/javascript">
Polymer({
is: "my-form",
submitForm: function() {
alert(this.$.name.value);
if(this.$.name.value != "") // whatever input check
this.$.form.submit();
}
})
</script>
</dom-module>
<my-form></my-form> <!-- use custom-component my-form -->
列表中。
尽管对象检查证明那里有值，但该函数返回一个空列表。我究竟做错了什么？
userInterests运行中：
public List getUserInterests(String id){
final ParseQuery<ParseObject> queryFindAllInterests = ParseQuery.getQuery("Interests");
final List<String> userInterests = new ArrayList<>();
queryFindAllInterests.whereEqualTo("user", id);
queryFindAllInterests.findInBackground(new FindCallback<ParseObject>() {
@Override
public void done(final List<ParseObject> interestList, ParseException e) {
if (e == null) {
for (ParseObject object : interestList) {
userInterests.add(object.getString("interest"));
System.out.println("Object check: " + object);
}
} else {
Log.d("interest retrieval", "Error: " + e.getMessage());
}
}
});
System.out.println("User interests: " + userInterests);
return userInterests;
}
更新：
所以我把for循环更改为：
I/System.out: User interests: []
I/System.out: Object check: com.parse.ParseObject@132ac47a
I/System.out: Object check: com.parse.ParseObject@216f042b
I/System.out: Object check: com.parse.ParseObject@33cc1088
I/System.out: Object check: com.parse.ParseObject@c1caa21
输出显示正确的字符串：
for (ParseObject object : interestList) {
String interest = object.getString("interest");
userInterests.add(interest);
System.out.println("Object check: " + interest);
}