add fetched results controller

100mango · Apr 8, 2015 · 0f1c7d9 · 0f1c7d9
1 parent a818920
commit 0f1c7d9
Show file tree

Hide file tree

Showing 2 changed files with 116 additions and 6 deletions.
diff --git a/QRCatcher/Base.lproj/Main.storyboard b/QRCatcher/Base.lproj/Main.storyboard
@@ -4,20 +4,39 @@
         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6736"/>
     </dependencies>
     <scenes>
-        <!--Item 2-->
+        <!--URL-->
         <scene sceneID="S0d-K9-LNM">
             <objects>
-                <viewController id="tLp-OF-DMW" customClass="QRURLViewController" sceneMemberID="viewController">
+                <viewController title="URL" id="tLp-OF-DMW" customClass="QRURLViewController" sceneMemberID="viewController">
                     <layoutGuides>
                         <viewControllerLayoutGuide type="top" id="aVG-X8-ap0"/>
                         <viewControllerLayoutGuide type="bottom" id="1jC-g8-Vry"/>
                     </layoutGuides>
                     <view key="view" contentMode="scaleToFill" id="3EE-mB-aNd">
                         <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+                        <subviews>
+                            <tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="44" sectionHeaderHeight="22" sectionFooterHeight="22" translatesAutoresizingMaskIntoConstraints="NO" id="ObY-vt-qiC">
+                                <rect key="frame" x="0.0" y="0.0" width="600" height="600"/>
+                                <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                                <connections>
+                                    <outlet property="dataSource" destination="tLp-OF-DMW" id="94c-DG-9PU"/>
+                                    <outlet property="delegate" destination="tLp-OF-DMW" id="INH-Fw-Yns"/>
+                                </connections>
+                            </tableView>
+                        </subviews>
                         <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
+                        <constraints>
+                            <constraint firstAttribute="bottom" secondItem="ObY-vt-qiC" secondAttribute="bottom" id="5a7-lz-O6y"/>
+                            <constraint firstAttribute="trailing" secondItem="ObY-vt-qiC" secondAttribute="trailing" id="76C-hM-o4V"/>
+                            <constraint firstItem="ObY-vt-qiC" firstAttribute="top" secondItem="3EE-mB-aNd" secondAttribute="top" id="NHx-RI-Jkd"/>
+                            <constraint firstItem="ObY-vt-qiC" firstAttribute="leading" secondItem="3EE-mB-aNd" secondAttribute="leading" id="RPL-sC-aH8"/>
+                        </constraints>
                     </view>
                     <tabBarItem key="tabBarItem" title="Item 2" id="Nhe-Mq-UOZ"/>
+                    <connections>
+                        <outlet property="tableView" destination="ObY-vt-qiC" id="bma-3G-Xq5"/>
+                    </connections>
                 </viewController>
                 <placeholder placeholderIdentifier="IBFirstResponder" id="7TF-Vs-bMd" userLabel="First Responder" sceneMemberID="firstResponder"/>
             </objects>
@@ -42,10 +61,10 @@
             </objects>
             <point key="canvasLocation" x="-720" y="-183"/>
         </scene>
-        <!--Item-->
+        <!--QRView-->
         <scene sceneID="ufC-wZ-h7g">
             <objects>
-                <viewController id="vXZ-lx-hvc" customClass="QRCatchViewController" sceneMemberID="viewController">
+                <viewController title="QRView" id="vXZ-lx-hvc" customClass="QRCatchViewController" sceneMemberID="viewController">
                     <layoutGuides>
                         <viewControllerLayoutGuide type="top" id="jyV-Pf-zRb"/>
                         <viewControllerLayoutGuide type="bottom" id="2fi-mo-0CV"/>

diff --git a/QRCatcher/QRURLViewController.m b/QRCatcher/QRURLViewController.m
@@ -7,23 +7,114 @@
 //
 
 #import "QRURLViewController.h"
+#import "AppDelegate.h"
 
-@interface QRURLViewController ()
+@interface QRURLViewController ()<UITableViewDataSource,UITableViewDelegate,NSFetchedResultsControllerDelegate>
+
+@property (nonatomic,strong) NSFetchedResultsController *fetchedResultsController;
+@property (weak, nonatomic) IBOutlet UITableView *tableView;
 
 @end
 
 @implementation QRURLViewController
 
 - (void)viewDidLoad {
     [super viewDidLoad];
-    // Do any additional setup after loading the view.
+
+
+    //fetched results controller set up
+    NSFetchRequest *requst = [NSFetchRequest fetchRequestWithEntityName:@"URLEntity"];
+    NSManagedObjectContext *cotext = [[AppDelegate appDelegate] managedObjectContext];
+
+    self.fetchedResultsController = [[NSFetchedResultsController alloc]initWithFetchRequest:requst managedObjectContext:cotext sectionNameKeyPath:nil cacheName:nil];
+    self.fetchedResultsController.delegate = self;
+    NSError *error = nil;
+    [self.fetchedResultsController performFetch:&error];
+
+    if (error) {
+        NSLog(@"Unable to perform fetch.");
+        NSLog(@"%@, %@", error, error.localizedDescription);
+    }
 }
 
 - (void)didReceiveMemoryWarning {
     [super didReceiveMemoryWarning];
     // Dispose of any resources that can be recreated.
 }
 
+#pragma mark - Table view data source
+- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
+{
+    return self.fetchedResultsController.sections.count;
+}
+
+- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
+{
+    if (self.fetchedResultsController.sections.count > 0)
+    {
+        id <NSFetchedResultsSectionInfo> sectionInfo = [self.fetchedResultsController.sections objectAtIndex:section];
+        return [sectionInfo numberOfObjects];
+    }
+    else
+        return 0;
+}
+
+/*
+- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
+    
+    //UITableViewCell *cell = <#Get the cell#>;
+    //NSManagedObject *managedObject = [<#Fetched results controller#> objectAtIndexPath:indexPath];
+    // Configure the cell with data from the managed object.
+    //return cell;
+}
+ */
+
+#pragma mark - Table view delegate
+
+#pragma mark - NSFetchedResultsController delegate
+
+- (void)controllerWillChangeContent:(NSFetchedResultsController *)controller
+{
+    [self.tableView beginUpdates];
+}
+
+- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller
+{
+    [self.tableView endUpdates];
+}
+
+- (void)controller:(NSFetchedResultsController *)controller didChangeObject:(id)anObject
+       atIndexPath:(NSIndexPath *)indexPath forChangeType:(NSFetchedResultsChangeType)type
+      newIndexPath:(NSIndexPath *)newIndexPath {
+
+    UITableView *tableView = self.tableView;
+
+    switch(type) {
+
+        case NSFetchedResultsChangeInsert:
+            [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath]
+                             withRowAnimation:UITableViewRowAnimationFade];
+            break;
+
+        case NSFetchedResultsChangeDelete:
+            [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
+                             withRowAnimation:UITableViewRowAnimationFade];
+            break;
+
+        case NSFetchedResultsChangeUpdate:
+            //[self configureCell:[tableView cellForRowAtIndexPath:indexPath]
+                    //atIndexPath:indexPath];
+            break;
+
+        case NSFetchedResultsChangeMove:
+            [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]
+                             withRowAnimation:UITableViewRowAnimationFade];
+            [tableView insertRowsAtIndexPaths:[NSArray arrayWithObject:newIndexPath]
+                             withRowAnimation:UITableViewRowAnimationFade];
+            break;
+    }
+}
+
 /*
 #pragma mark - Navigation