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i need to build an iPhone app that's search in Sqlite Database by using search bar and display the result in UITableView , could any one give me tutorial or source code to trace them , Thanks in advance,
Regards
For searching using SQL query, refer the LIKE operator: http://www.sqlite.org/lang_expr.html
The query normally comes out to be something like this:
NSString *nsquery = [[NSString alloc] initWithFormat:#"SELECT * FROM RECIPE WHERE RECIPENAME LIKE '%#'", someRecipeName];
For SQLite: here is tutorial for quick learning
http:// www.techotopia.com/index.php/An_Example_SQLite_based_iOS_4_iPhone_Application_(Xcode_4)
if you want exact string Match
NSString *querySQL = [NSString stringWithFormat:
#"SELECT address, phone FROM contacts WHERE name=\"%#\"",
name.text];
if you want to match string as substring
NSString *querySQL = [NSString initWithFormat:#"SELECT address, phone FROM contacts WHERE name LIKE '%#'",someName];
Here is more example of how to use Like
/* Returns all users whose name starts with "d" */
SELECT * FROM contacts WHERE name LIKE 'd%'
/* Returns all users whose name contains "dav" */
SELECT * FROM contacts WHERE name LIKE '%dav%'
Hope this will help you
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Is there some way to write/download rules for how VS. Code should format the code?
Example:
I have this nicely formatted (JavaScript) code:
var boundingBox = Object.create(null);
boundingBox.top = 0;
boundingBox.left = 0;
boundingBox.right = window.innerWidth;
boundingBox.bottom = window.innerHeight;
But after I do: Right-click --> Format Document
It destroys it into this (relatively) ugly & "unreadable" mess:
var boundingBox = Object.create(null);
boundingBox.top = 0;
boundingBox.left = 0;
boundingBox.right = window.innerWidth;
boundingBox.bottom = window.innerHeight;
Is there some plugin/.edditorconfig rules/settings/other thing I can do to tell VS. Code how it should format the code? (or at least not destroy the existing formating?)
I think what you want is this extension:
https://marketplace.visualstudio.com/items?itemName=wwm.better-align
It allows you to align your code lines by colon(:), assignment(=,+=,-=,*=,/=) and arrow(=>)
However, my personal opinion is that it would likely be worth it to get used to other code formatting styles. From my experience, aligning code by specific characters is not common practice.
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I am new to Parse.
I am using Parse in my app. I have a class which stores scores of users. Now, I want to get Top 10 maximum scorer. How can I?
Please Help!
Down Voters Please answer!
It's really not so hard, just take a look at the docs.
But, anyway, you should probably do something like this:
PFQuery *query = [PFQuery queryWithClassName:#"Player"];
[query orderByDescending:#"score"];
query.limit = 10;
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
} else {
}
}];
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how to read data from QML page using signals
how to wite received data in another QML page using signals
i excatly expect qtsignals and slots concepts. please anybody tell how to read and wrote data from qml page.
Try the following syntax and get sample from github
1.HPP FILE
Q_PROPERTY(QString companyname READ companyname WRITE setcompanyname NOTIFY companynameChanged)
void companynameChanged();
void setcompanyname(const QString &company);
QString companyname() const;
QString m_company;
2.CPP FILE
void ApplicationUI::setcompanyname(const QString &company)
{
if (m_company == company)
return;
m_company = company;
emit companynameChanged();
}
QString ApplicationUI::companyname() const
{
return m_company;
}
------------------- Get sample full code from here (CLICK HERE)-----------
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Very strange issue.
I have the following code:
NSDictionary* notificationUserInfo = [pNotification userInfo];
NSManagedObject* newShoppingFilter = [notificationUserInfo valueForKey:#"shoppingListFilter"];
self.shoppingListFilter = newShoppingFilter;
NSLog(#"%# tapped", [newShoppingFilter valueForKey:#"name"]);
For some reason the self.shoppingListFilter = newShoppingFilter is not setting the variable.
I assume that this is some issue with not initializing the self.shoppingListFilter variable in some way but I cannot figure this out. The NSLog shows the right output, newShoppingFilter is not null but self.shoppingListFilter is.
Any help is appreciated.
I bet newShoppingFilter is nil. Most likely, there is no key "shoppingListFilter" in the notification user info dictionary.
Set a breakpoint at the line that assigns a value to self.shoppingListFilter and check the value of newShoppingFilter. Also display the entire contents of notificationUserInfo.
Post the code that creates the user info dictionary and passes it into the notification that you are posting. That would help track down the problem.
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I'm looking for a super simple example of how to do a getObject from S3 using their iOS SDK: http://aws.amazon.com/sdkforios/
Specifically the part on how to write the response results to a file.
The problem seems to be that although S3GetObjectReponse has setOutputStream, the only
way to get S3GetObjectResponse is via [[AmazonClientManager s3] getObject:getObjectRequest];
And it might be too late by then.
So, set the output stream in the request:
S3GetObjectRequest *getObjectRequest = [[[S3GetObjectRequest alloc] ....];
getObjectRequest.outputStream = ...;
See S3GetObjectRequest:
- (NSOutputStream *) outputStream
[read, write, assign]
Gets and Sets the output stream for the response data.
If this is set, then the response will write the data to the supplied stream instead of making it available through the data property.
The stream must be opened and scheduled in the desired runloop. The SDK will not close the stream.
I took a look at the API documentation for S3GetObjectResponse.h:
00020 #interface S3GetObjectResponse : S3Response {
00021 NSString *contentType;
00022 NSMutableDictionary *metadata;
00023 NSOutputStream *outputStream;
00024 }
00025
00027 #property(nonatomic, retain) NSString* contentType;
00028
00033 -(NSString *)getMetadataForKey:(NSString *)aKey;
00034
00041 -(void)setOutputStream:(NSOutputStream *)stream;
Perhaps you can set the S3 response's NSOutputStream using its -setOutputStream: method. You could then perhaps write that stream to a file using one of the NSOutputStream instance methods. For iOS apps, you can write data to a file in one of three specific folders.