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sir i have working with db connectivity i have written all code and i imported the header file also.but its showing the error in the line of sqlite3_exe symbol not found in architecture

help me to clear...!!!!

 NSFileManager *filemgr=[NSFileManager defaultManager];
if ([filemgr fileExistsAtPath:databasePath]==NO)
{
    const char *dbpath=[databasePath UTF8String];
    if (sqlite3_open(dbpath, &contactDB)==SQLITE_OK)
    {
        char *errorMsg;
        const char *sql_stmt="CREATE TABLE IF NOT EXISTS CONTACTS (ID INTEGER PRIMARY KEY AUTOINCREMENT,  NAME TEXT, ADDRESS TEXT, PHONE NUMERIC)";
        if (sqlite3_exe(contactDB, sql_stmt, NULL,NULL, &errorMsg)!=SQLITE_OK)
        {
            status.text=@"Failed to crate table";
        }
        sqlite3_close(contactDB);
    }else {
        status.text=@"Faild to open/create database";
    }
}

the error line is 

if (sqlite3_exe(contactDB, sql_stmt, NULL,NULL, &errorMsg)!=SQLITE_OK)

warning is the implicit declaration of function "sqlite3_exe" is invalid in c99. error is Undefined symbols for architecture i386:

 "_sqlite3_exe", referenced from:
  -[DatabaseViewController viewDidLoad] in DatabaseViewController.o

ld: symbol(s) not found for architecture i386 clang: error: linker command failed with exit code 1 (use -v to see invocation)

4

2 に答える 2

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sqlite3_execです。sqlite3_exeではありません。チェックしてください。exeファイルに「C」がありません。

于 2012-10-17T08:02:34.813 に答える
0

これは同じサンプルコードです。ここで音声を録音できます。あなたはできる

#define DOCUMENTS_FOLDER [NSHomeDirectory() stringByAppendingPathComponent:@"Documents"]

    - (void) startRecording{

    UIBarButtonItem *stopButton = [[UIBarButtonItem alloc] initWithTitle:@"Stop" style:UIBarButtonItemStyleBordered  target:self action:@selector(stopRecording)];
    self.navigationItem.rightBarButtonItem = stopButton;
    [stopButton release];

    AVAudioSession *audioSession = [AVAudioSession sharedInstance];
    NSError *err = nil;
    [audioSession setCategory :AVAudioSessionCategoryPlayAndRecord error:&err];
    if(err){
        NSLog(@"audioSession: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
        return;
    }
    [audioSession setActive:YES error:&err];
    err = nil;
    if(err){
        NSLog(@"audioSession: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
        return;
    }

    recordSetting = [[NSMutableDictionary alloc] init];

    [recordSetting setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
    [recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey]; 
    [recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];

    [recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
    [recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
    [recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];



    // Create a new dated file
    NSDate *now = [NSDate dateWithTimeIntervalSinceNow:0];
    NSString *caldate = [now description];
    recorderFilePath = [[NSString stringWithFormat:@"%@/%@.caf", DOCUMENTS_FOLDER, caldate] retain];

    NSURL *url = [NSURL fileURLWithPath:recorderFilePath];
    err = nil;
    recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&err];
    if(!recorder){
        NSLog(@"recorder: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
        UIAlertView *alert =
        [[UIAlertView alloc] initWithTitle: @"Warning"
                                   message: [err localizedDescription]
                                  delegate: nil
                         cancelButtonTitle:@"OK"
                         otherButtonTitles:nil];
        [alert show];
        [alert release];
        return;
    }

    //prepare to record
    [recorder setDelegate:self];
    [recorder prepareToRecord];
    recorder.meteringEnabled = YES;

    BOOL audioHWAvailable = audioSession.inputIsAvailable;
    if (! audioHWAvailable) {
        UIAlertView *cantRecordAlert =
        [[UIAlertView alloc] initWithTitle: @"Warning"
                                   message: @"Audio input hardware not available"
                                  delegate: nil
                         cancelButtonTitle:@"OK"
                         otherButtonTitles:nil];
        [cantRecordAlert show];
        [cantRecordAlert release]; 
        return;
    }

    // start recording
    [recorder recordForDuration:(NSTimeInterval) 10];

    }

    - (void) stopRecording{

    [recorder stop];

    NSURL *url = [NSURL fileURLWithPath: recorderFilePath];
    NSError *err = nil;
    NSData *audioData = [NSData dataWithContentsOfFile:[url path] options: 0 error:&err];
    if(!audioData)
        NSLog(@"audio data: %@ %d %@", [err domain], [err code], [[err userInfo] description]);
    [editedObject setValue:[NSData dataWithContentsOfURL:url] forKey:editedFieldKey];   

    //[recorder deleteRecording];


    NSFileManager *fm = [NSFileManager defaultManager];

    err = nil;
    [fm removeItemAtPath:[url path] error:&err];
    if(err)
        NSLog(@"File Manager: %@ %d %@", [err domain], [err code], [[err userInfo] description]);



    UIBarButtonItem *startButton = [[UIBarButtonItem alloc] initWithTitle:@"Record" style:UIBarButtonItemStyleBordered  target:self action:@selector(startRecording)];
    self.navigationItem.rightBarButtonItem = startButton;
    [startButton release];

    }

    - (void)audioRecorderDidFinishRecording:(AVAudioRecorder *) aRecorder successfully:(BOOL)flag
    {

    NSLog (@"audioRecorderDidFinishRecording:successfully:");
    // your actions here

    }

再生用 記録停止方法で次の行を使用できます。

NSURL* musicFile = [NSURL fileURLWithPath:[[NSBundle mainBundle] 
                                               pathForResource:@"click"
                                               ofType:@"caf"]];
    AVAudioPlayer *click = [[AVAudioPlayer alloc] initWithContentsOfURL:musicFile error:nil];
    [click play];
    [click release];

録音されたサウンド パスの正しい URL をアプリに渡していることを確認してください。これらの行は、オーディオ プレーヤーで再生されます。

于 2012-10-22T11:51:50.530 に答える