Fill Category List from SQLite

xxd · Apr 11, 2012 · 4431139 · 4431139
1 parent 692393d
commit 4431139
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Showing 5 changed files with 42 additions and 33 deletions.
diff --git a/Dandan/AppDelegate.m b/Dandan/AppDelegate.m
@@ -189,7 +189,6 @@ - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(
 
     // 创建SQLite数据库
     [self createEditableCopyofDatabaseIfNeeded];
-
     // 同步表
     [self initializeDatabase];
 

diff --git a/Dandan/LocalSQLiteOperate.h b/Dandan/LocalSQLiteOperate.h
@@ -13,6 +13,8 @@
 }
 - (NSString *) getDBPath;
 - (NSInteger)CreateNewList:(sqlite3 *)db listID:(NSNumber *)listID  listTitle:(NSString *)listTitle categoryID:(NSNumber *)categoryID;
+- (NSArray *)getCategoryList;
 -(NSInteger)insertNewTodoIntoDatabase;
 
+
 @end
diff --git a/Dandan/LocalSQLiteOperate.m b/Dandan/LocalSQLiteOperate.m
@@ -7,16 +7,19 @@
 //
 
 #import "LocalSQLiteOperate.h"
+#import "PickCategoryTableViewController.h"
 static sqlite3_stmt *insert_statement = nil;
+static sqlite3_stmt *selectstmt = nil;
 
 @implementation LocalSQLiteOperate
-
+//获取数据库路径
 - (NSString *) getDBPath {
 	NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
 	NSString *documentsDir = [paths objectAtIndex:0];
 	return [documentsDir stringByAppendingPathComponent:@"dan.sqlite"];
 }
 
+//建立新列表list
 - (NSInteger)CreateNewList:(sqlite3 *)db listID:(NSNumber *)listID  listTitle:(NSString *)listTitle categoryID:(NSNumber *)categoryID{
     if (sqlite3_open([self.getDBPath UTF8String], &db) == SQLITE_OK) {
         NSLog(@"path:%@",self.getDBPath);
@@ -42,28 +45,32 @@ - (NSInteger)CreateNewList:(sqlite3 *)db listID:(NSNumber *)listID  listTitle:(N
     }
 }
 
-
-- (NSInteger)insertNewTodoIntoDatabase {
-
-    if (insert_statement == nil) {
-    //database = db;
-    NSString *insertSQL = [NSString stringWithFormat: @"INSERT INTO `lists` (`id`, `title`, `category_id`) VALUES(7,'test7',7)"];
-    const char *sql = [insertSQL UTF8String];
-    NSLog(@"Insert SQL: %s",sql);
-    if (sqlite3_prepare_v2(database, sql, -1, &insert_statement, NULL) != SQLITE_OK) {
-        NSAssert1(0, @"Error: failed to prepare statement with message '%s'.", sqlite3_errmsg(database));
+//获取Category列表
+- (NSArray *)getCategoryList{
+    if (sqlite3_open([[self getDBPath] UTF8String], &database) == SQLITE_OK) {
+        // Get the primary key for all books.
+        const char *sql = "SELECT name FROM categories";
+        NSMutableArray *categroyNameArray = [[NSMutableArray alloc] init];
+        PickCategoryTableViewController *pickCategoryTableViewController = [[PickCategoryTableViewController alloc] init];
+        if (sqlite3_prepare_v2(database, sql, -1, &selectstmt, NULL) == SQLITE_OK) {
+            while (sqlite3_step(selectstmt) == SQLITE_ROW) {
+                NSString *name = [NSString stringWithUTF8String:(char *)sqlite3_column_text(selectstmt, 0)];
+                [categroyNameArray addObject:name];
+
+
+            }
+            return categroyNameArray;
+        }
+        sqlite3_finalize(selectstmt);
+    } else {
+        sqlite3_close(database);
+        NSAssert1(0, @"Failed to open database with message '%s'.", sqlite3_errmsg(database));
     }
 }
-int success = sqlite3_step(insert_statement);
-
-sqlite3_reset(insert_statement);
-if (success != SQLITE_ERROR) {
-    return sqlite3_last_insert_rowid(database);
-}
-NSAssert1(0, @"Error: failed to insert into the database with message '%s'.", sqlite3_errmsg(database));
-return -1;
 
+//调试用 Debug Only!
+- (NSInteger)insertNewTodoIntoDatabase {
+    NSLog(@"as good as it gets!");
 }
 
-
 @end
diff --git a/Dandan/PickCategoryTableViewController.h b/Dandan/PickCategoryTableViewController.h
@@ -7,16 +7,15 @@
 //
 
 #import <UIKit/UIKit.h>
-#import <sqlite3.h>
 
 @class PickCategoryTableViewController;
 @protocol pickCategoryTableViewControllerDelegate <NSObject>
 -(void)controller:(PickCategoryTableViewController *)controller didSelectCategory:(NSString *)category;
 @end
 
-@interface PickCategoryTableViewController : UITableViewController{
-    sqlite3   *database;
-}
+@interface PickCategoryTableViewController : UITableViewController
 @property (strong, nonatomic) NSArray *categories;
 @property (nonatomic, weak) id <pickCategoryTableViewControllerDelegate> delegate;
+
+- (void)fillCategoryList;
 @end
diff --git a/Dandan/PickCategoryTableViewController.m b/Dandan/PickCategoryTableViewController.m
@@ -7,6 +7,7 @@
 //
 
 #import "PickCategoryTableViewController.h"
+#import "LocalSQLiteOperate.h"
 
 @interface PickCategoryTableViewController ()
 
@@ -15,19 +16,19 @@ @interface PickCategoryTableViewController ()
 @implementation PickCategoryTableViewController
 @synthesize delegate, categories;
 
-- (NSString *) getDBPath {
-	NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory , NSUserDomainMask, YES);
-	NSString *documentsDir = [paths objectAtIndex:0];
-	return [documentsDir stringByAppendingPathComponent:@"dan.sqlite"];
+- (void)fillCategoryList{
+    if ([[LocalSQLiteOperate alloc]  respondsToSelector:@selector(getCategoryList)]) 
+    {
+        categories = [[LocalSQLiteOperate alloc]  performSelector:@selector(getCategoryList)];
+    } else {
+        NSLog(@"## Class does not respond to getCategoryList");
+    }
 }
 
-- (void)InitCategoryList{
-
-}
 - (void)viewDidLoad
 {
     [super viewDidLoad];
-    categories = [NSArray arrayWithObjects:@"Fashion", @"Tech", @"Travel", nil];
+    [self fillCategoryList];
 }
 
 - (void)viewDidUnload
@@ -50,6 +51,7 @@ - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
 {
     return [categories count];
+
 }
 
 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath