[英]Parse.com Returns null for object
I am trying to fetch object from parse.com.我正在尝试从 parse.com 获取对象。 But I get an empty object.Here is the class.
但我得到一个空对象。这是课程。
And here is my code.这是我的代码。
ParseQuery<ParseObject> query = ParseQuery.getQuery("AppDate");
query.getInBackground("lOtmkstVaR", new GetCallback<ParseObject>() {
public void done(ParseObject object, ParseException e) {
if (e == null) {
Log.d("DATA", object.getObjectId());
} else {
// something went wrong
e.printStackTrace();
}
}
});
And here is my logcat.这是我的 logcat。
06-12 10:57:20.203 7512-7512/com.andromedatech.onlineradio W/System.err﹕ com.parse.ParseException: no results found for query
06-12 10:57:20.273 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at com.parse.AbstractParseQueryController$1.then(AbstractParseQueryController.java:26)
06-12 10:57:20.273 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at com.parse.AbstractParseQueryController$1.then(AbstractParseQueryController.java:17)
06-12 10:57:20.273 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task$13.run(Task.java:755)
06-12 10:57:20.273 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.BoltsExecutors$ImmediateExecutor.execute(BoltsExecutors.java:105)
06-12 10:57:20.273 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task.completeImmediately(Task.java:746)
06-12 10:57:20.274 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task.access$100(Task.java:31)
06-12 10:57:20.274 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task$9.then(Task.java:538)
06-12 10:57:20.274 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task$9.then(Task.java:535)
06-12 10:57:20.274 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task.runContinuations(Task.java:832)
06-12 10:57:20.274 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task.access$600(Task.java:31)
06-12 10:57:20.274 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task$TaskCompletionSource.trySetResult(Task.java:887)
06-12 10:57:20.274 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task$TaskCompletionSource.setResult(Task.java:921)
06-12 10:57:20.274 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task$14$1.then(Task.java:813)
06-12 10:57:20.274 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task$14$1.then(Task.java:800)
06-12 10:57:20.274 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task$13.run(Task.java:755)
06-12 10:57:20.275 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.BoltsExecutors$ImmediateExecutor.execute(BoltsExecutors.java:105)
06-12 10:57:20.275 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task.completeImmediately(Task.java:746)
06-12 10:57:20.275 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task.continueWith(Task.java:545)
06-12 10:57:20.275 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task.continueWith(Task.java:556)
06-12 10:57:20.275 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at bolts.Task$14.run(Task.java:800)
06-12 10:57:20.275 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
06-12 10:57:20.275 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
06-12 10:57:20.275 7512-7512/com.andromedatech.onlineradio W/System.err﹕ at java.lang.Thread.run(Thread.java:818)
I just started using parse.com back-end service.我刚开始使用 parse.com 后端服务。 I am using parse.com guide.
我正在使用 parse.com 指南。
You have made a simple typo in your query.您在查询中犯了一个简单的错字。 Your class name is
AppData
but you have used AppDate
.您的类名是
AppData
但您使用了AppDate
。 It should be它应该是
ParseQuery<ParseObject> query = ParseQuery.getQuery("AppData");
I had this error too.我也有这个错误。 Is caused by parse don't return a "ParseObject", just and object, here my code which works fine for me:
是由解析不返回“ParseObject”引起的,只是和对象,这里我的代码对我来说很好用:
ParseQuery query = new ParseQuery("Your_class_name");
query.getInBackground(imagenID, new GetCallback() {
@Override
public void done(Object o, Throwable throwable) {
ParseObject object = (ParseObject) o;
ParseFile foto = (ParseFile) object.get("Your_column_name");
foto.getDataInBackground(new GetDataCallback() {
@Override
public void done(byte[] bytes, ParseException e) {
if (e == null) {
//do your things like decoding to a Bitmap
} else {
Toast.makeText(getApplicationContext(), "Error", Toast.LENGTH_SHORT).show();
e.printStacktrace();
}
}
});
}
}
just replace your "done" for my "done".只需将您的“完成”替换为我的“完成”。 It works perfectly for me
它非常适合我
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