query.getFirst() 真正返回什么？
Retrieves at most one ParseObject that satisfies this query. Uses the network and/or the cache, depending on the cache policy. This mutates the ParseQuery. Returns: A ParseObject obeying the conditions set in this query, or null if none found. Throws: ParseException - Throws a ParseException if no object is found.
首先是说没有找到对象返回null。 之后它说会出现找不到对象的异常..
它到底有什么作用？
谢谢。
最佳答案
方法抛出ParseException，在 Parse-1.7.1 SDK 上测试
e = {com.parse.ParseException@831697061768}"com.parse.ParseException: no results found for query"
code = 101
cause = {com.parse.ParseException@831697061768}"com.parse.ParseException: no results found for query"
detailMessage = {java.lang.String@831697061808}"no results found for query"
stackState = {int[266]@831697061912}
stackTrace = {java.lang.StackTraceElement[0]@831693444272}
suppressedExceptions = {java.util.Collections$EmptyList@831693442224} size = 0
关于android - Parse.com 查询 getFirst() 异常，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/27330006/