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我正在做一个iPad应用程序，我将在同一屏幕上有UITabelview和Button和UiTextview。我的任务是，如果我在UITableview中选择一些行并按下按钮，则文本必须出现在UITextview上。将SQlite3连接到UITextview
我填充了很少的方法，但它没有工作，任何人都可以让我知道我能做些什么来成功完成这项任务。
请在下面找到我的代码供您参考......它可以帮助您解释我的问题。
#import <UIKit/UIKit.h>
#import "table1.h"
#import "textView.h"
@interface searchOne : UIViewController
{
IBOutlet UITableView *firstTable;
table1 *tableOne;
textView * text1;
int row;
}
@property(nonatomic,retain)IBOutlet UIButton * search;
@property (nonatomic,retain) IBOutlet UITextView *txt;
@property(nonatomic, assign) int row;
-(IBAction)resPage:(id)sender;
@end
#import "searchOne.h"
#import "textView.h"
@implementation searchOne
@synthesize search;
@synthesize txt, row;
- (void)viewDidLoad {
[super viewDidLoad];
if (tableOne == nil) {
tableOne = [[table1 alloc] init];
}
[firstTable setDataSource:tableOne];
tableOne.view = tableOne.tableView;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
row = [indexPath row];
}
-(IBAction)resPage:(id)sender{
NSString *str = txt.text;
row = [str intValue];
NSLog(@"get clicked");
self.view =txt;
}
/*
// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Return YES for supported orientations
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
*/
- (void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void)viewDidUnload {
// [self setTxt:nil];
[super viewDidUnload];
}
@end
DB：
#import <Foundation/Foundation.h>
@interface db : NSObject{
NSInteger ID;
NSString * name;
}
@property (nonatomic, retain) NSString * name;
@property(nonatomic, readwrite) NSInteger ID;
-(id)initWithID: (NSInteger)i andName:(NSString *)n;
@end
@implementation db
@synthesize name,ID;
-(id)initWithID: (NSInteger)i andName:(NSString *)n{
self=[super init];
if(self)
{
self.ID = i;
self.name = n;
}
return self;
}
@end
TABEL观点：
#import <UIKit/UIKit.h>
#import "sqlite3.h"
#import "db.h"
@interface table1 : UITableViewController<UITableViewDataSource>{
NSString *databaseName;
NSString * databasePath;
NSMutableArray * tableOne;
}
@property(nonatomic, retain) NSMutableArray * tableOne;
-(void)checkAndCreateDatabase;
-(void)readDataFromDatabase;
@end
#import "table1.h"
#import "db.h"
@implementation table1
@synthesize tableTwo;
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[email protected]"nobel10.db";
NSArray *documentPaths= NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString * documentDir = [documentPaths objectAtIndex:0];
databasePath=[documentDir stringByAppendingPathComponent:databaseName];
[self checkAndCreateDatabase];
[self readDataFromDatabase];
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
#pragma mark - TableView Data Source methods
-(NSInteger) numberOfSectionsInTableView:(UITableView *)tableView{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return [tableTwo count]; }
// Row display. Implementers should *always* try to reuse cells by setting each cell's reuseIdentifier and querying for available reusable cells with dequeueReusableCellWithIdentifier:
// Cell gets various attributes set automatically based on table (separators) and data source (accessory views, editing controls)
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
UITableViewCell *cell= nil;
cell = [tableView dequeueReusableCellWithIdentifier:@"mycell"];
if (cell == nil) {
cell=[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"mycell"];}
db * temp =(db *)[self.tableTwo objectAtIndex:indexPath.row];
cell.textLabel.text=temp.name;
return cell;
}
-(void)checkAndCreateDatabase{
BOOL success;
NSFileManager *fileManager=[NSFileManager defaultManager];
success=[fileManager fileExistsAtPath:databasePath];
if(success)
return;
NSString *databasePathFromApp = [[[NSBundle mainBundle]resourcePath] stringByAppendingPathComponent:databaseName];
[fileManager copyItemAtPath:databasePathFromApp toPath:databasePath error:nil];
}
-(void)readDataFromDatabase{
sqlite3 *database;
tableTwo=[[NSMutableArray alloc]init];
if(sqlite3_open([databasePath UTF8String], &database)== SQLITE_OK){
const char *sqlStatement = "SELECT * FROM country";
sqlite3_stmt *compiledStatement;
if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL)==SQLITE_OK){
while (sqlite3_step(compiledStatement)==SQLITE_ROW) {
NSInteger pId = sqlite3_column_int(compiledStatement, 0);
NSString *stringName=[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)];
db *info =[[db alloc]initWithID:pId andName:stringName];
[tableTwo addObject:info];
}
}
sqlite3_finalize(compiledStatement);
}
sqlite3_close(database);
}
@end
的UITextView：
#import <UIKit/UIKit.h>
#import "sqlite3.h"
#import "db.h"
@interface textView : UIViewController<UITextViewDelegate>{
NSString *databaseName;
NSString * databasePath;
NSMutableArray *textOne;
NSString *description;
}
@property(nonatomic, retain) NSMutableArray *textOne;
@property (nonatomic, retain) NSString *description;
-(void)checkAndCreateDatabase;
-(void)readDataFromDatabase;
-(id)initWithDescription:(NSString *)d;
@end
#import "textView.h"
@implementation textView
@synthesize textOne, description;;
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[email protected]"nobel10.db";
NSArray *documentPaths= NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString * documentDir = [documentPaths objectAtIndex:0];
databasePath=[documentDir stringByAppendingPathComponent:databaseName];
[self checkAndCreateDatabase];
[self readDataFromDatabase];
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
#pragma mark - TableView Data Source methods
// Row display. Implementers should *always* try to reuse cells by setting each cell's reuseIdentifier and querying for available reusable cells with dequeueReusableCellWithIdentifier:
// Cell gets various attributes set automatically based on table (separators) and data source (accessory views, editing controls)
-(void)checkAndCreateDatabase{
BOOL success;
NSFileManager *fileManager=[NSFileManager defaultManager];
success=[fileManager fileExistsAtPath:databasePath];
if(success)
return;
NSString *databasePathFromApp = [[[NSBundle mainBundle]resourcePath] stringByAppendingPathComponent:databaseName];
[fileManager copyItemAtPath:databasePathFromApp toPath:databasePath error:nil];
}
-(void)readDataFromDatabase{
sqlite3 *database;
textOne=[[NSMutableArray alloc]init];
if(sqlite3_open([databasePath UTF8String], &database)== SQLITE_OK){
const char *sqlStatement = "SELECT name,item_country.id,text.item FROM country,item_country,text WHERE country.name ='India' AND country.id = item_country.id AND text.item =item_country.item ";
sqlite3_stmt *compiledStatement;
if(sqlite3_prepare_v2(database, sqlStatement, -1, &compiledStatement, NULL)==SQLITE_OK){
while (sqlite3_step(compiledStatement)==SQLITE_ROW) {
NSInteger pId = sqlite3_column_int(compiledStatement, 0);
NSString *stringName=[NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)];
db *info =[[db alloc]initWithID:pId andName:stringName];
[textOne addObject:info];
}
}
sqlite3_finalize(compiledStatement);
}
sqlite3_close(database);
}
-(id)initWithDescription:(NSString *)d{
self.description = d;
return self;
}
@end
请帮助我，我是新来的iPad开发和袭击在这里..
这三个类之间的关系是什么？ – Ravin 2012-02-29 13:05:35
嗨Ravin：一个是数据库，tableview和textview – makumar 2012-02-29 13:14:29
你的按钮在哪里？ – 2012-02-29 13:49:48