Java 解析";未找到查询(代码101)的结果;。Can';无法获取对象id
我已经在桌面上安装了示例解析服务器(),并制作了一个简单的应用程序来测试它 我的应用程序将对象保存到服务器,获取该对象并将mTextView的值设置为我的对象的值 问题是,当我尝试使用此代码从服务器获取数据时,它可以正常工作:Java 解析";未找到查询(代码101)的结果;。Can';无法获取对象id,java,android,parse-server,Java,Android,Parse Server,我已经在桌面上安装了示例解析服务器(),并制作了一个简单的应用程序来测试它 我的应用程序将对象保存到服务器,获取该对象并将mTextView的值设置为我的对象的值 问题是,当我尝试使用此代码从服务器获取数据时,它可以正常工作: query.getInBackground("5K7N8a8Dmd", new GetCallback<ParseObject>() ... MainActivity.java public class MainActivity exten
query.getInBackground("5K7N8a8Dmd", new GetCallback<ParseObject>() ...
MainActivity.java
public class MainActivity extends Activity {
public TextView mTextView;
public String objectId;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTextView = (TextView) findViewById(R.id.text_view);
Parse.initialize(new Parse.Configuration.Builder(getApplicationContext())
.applicationId(Constants.APP_ID)
.server(Constants.SERVER_URL)
.build()
);
final ParseObject gameScore = new ParseObject("Foo1234");
gameScore.put("score", 5000);
gameScore.saveInBackground(new SaveCallback() {
public void done(ParseException e) {
if (e == null) {
objectId = gameScore.getObjectId();
} else {
Log.e("saveInBackground", getErrorMessage(e));
}
}
});
ParseQuery<ParseObject> query = ParseQuery.getQuery("Foo1234");
query.getInBackground(objectId, new GetCallback<ParseObject>() {
public void done(ParseObject object, ParseException e) {
if (e == null) {
mTextView.setText(Integer.toString(gameScore.getInt("score")));
} else {
Log.e("getInBackground", getErrorMessage(e));
}
}
});
}
public String getErrorMessage(ParseException e) {
return e.getMessage() + " - code: " + e.getCode();
}
}
提前谢谢。试试这个
ParseQuery<ParseObject> query = ParseQuery.getQuery("_Foo1234");
query.whereEqualTo("objectId","wfBB0gpCkP");
query.findInBackground(new FindCallback<ParseObject>() {
public void done(List<ParseObject> objects, ParseException e) {
if (e == null) {
// row of Object Id "wfBB0gpCkP"
} else {
// error
}
}
});
ParseQuery query=ParseQuery.getQuery(“\u Foo1234”);
查询:whereEqualTo(“objectId”、“wfBB0gpCkP”);
findInBackground(新的FindCallback(){
公共void done(列出对象,parsee异常){
如果(e==null){
//对象Id为“wfBB0gpCkP”的行
}否则{
//错误
}
}
});
也改变
ParseQuery<ParseObject> query = ParseQuery.getQuery("Foo1234");
ParseQuery query=ParseQuery.getQuery(“Foo1234”);
到
ParseQuery query=ParseQuery.getQuery(“\u Foo1234”);
看看这是否有效。问题在于saveInBackground()
的“背景”部分。保存后的行上的保存未完成。事实上,它甚至还没有开始储蓄。在完成处理程序运行之前,保存不会完成
考虑一下
// code here runs **first**
gameScore.saveInBackground(new SaveCallback() {
public void done(ParseException e) {
// code here runs **third, much later than second**
if (e == null) {
objectId = gameScore.getObjectId();
} else {
Log.e("saveInBackground", getErrorMessage(e));
}
}
// code here runs **second, immediately**
在save的完成处理程序中运行“get”查询,您将看到它是有效的。(当然,没有太多理由获取对象,因为您拥有刚刚调用save的对象的句柄)。您在objectId中获得了任何值吗?@Le_Master yes。Log.i(“objectId”,objectId);-->I/objectId﹕ wfBB0gpCkP,但无法从done回调方法外部访问它,但我不想硬编码对象id“wfBB0gpCkP”,这是否有效?如果是,请用变量替换硬编码值,然后重试。更新答案。试试看,真管用!但是第二条线有点问题。我已经更改了这两个参数(改为(“某个字符串”,某个对象)),它仍然在工作。我甚至删除了这一行,它仍然在工作。我认为有必要使用对象id来检索对象的值?(在官方文档中,它说:“如果您有objectId,您可以使用ParseQuery检索整个ParseObject…”
ParseQuery<ParseObject> query = ParseQuery.getQuery("_Foo1234");
query.whereEqualTo("objectId","wfBB0gpCkP");
query.findInBackground(new FindCallback<ParseObject>() {
public void done(List<ParseObject> objects, ParseException e) {
if (e == null) {
// row of Object Id "wfBB0gpCkP"
} else {
// error
}
}
});
ParseQuery<ParseObject> query = ParseQuery.getQuery("Foo1234");
ParseQuery<ParseObject> query = ParseQuery.getQuery("_Foo1234");
// code here runs **first**
gameScore.saveInBackground(new SaveCallback() {
public void done(ParseException e) {
// code here runs **third, much later than second**
if (e == null) {
objectId = gameScore.getObjectId();
} else {
Log.e("saveInBackground", getErrorMessage(e));
}
}
// code here runs **second, immediately**