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我需要自定義使用UIImagePickerController拍攝的捕獲視頻的預覽。如何使用Iphone sdk中的UIImagePickerViewController捕獲視頻的自定義預覽？
蓋伊恩掙扎着這個，請任何人幫我擺脫這個問題。
代碼中，我寫道：
- (BOOL)startCameraPickerFromViewController:(UIViewController*)controller usingDelegate:(id<UIImagePickerControllerDelegate>)delegateObject
{
printf("\n Inside StartCameraPickerFromViewController.................");
if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera])
{
picker = [[[UIImagePickerController alloc] init]autorelease];
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
picker.delegate = self;
picker.showsCameraControls=NO;
picker.videoQuality = UIImagePickerControllerQualityTypeHigh;
picker.allowsEditing = YES;
picker.toolbarHidden = YES;
overlayView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
CGRect imageFrame = CGRectMake(135, 415, 40, 40);
startRecording= [[MyCustomButton alloc] initWithIndexPath:nil];
[startRecording setBackgroundImage: [UIImage imageNamed:@"recordbtn.png"] forState:UIControlStateNormal];
[startRecording setFrame:imageFrame];
[startRecording addTarget:self action:@selector(startRecordingAction) forControlEvents:UIControlEventTouchUpInside];
[overlayView addSubview:startRecording];
CGRect imageFrame1 = CGRectMake(50, 415, 40, 40);
stopRecording= [[MyCustomButton alloc] initWithIndexPath:nil];
[stopRecording setBackgroundImage: [UIImage imageNamed:@"stopbtn.png"] forState:UIControlStateNormal];
[stopRecording setFrame:imageFrame1];
[stopRecording addTarget:self action:@selector(stopRecording) forControlEvents:UIControlEventTouchUpInside];
[overlayView addSubview:stopRecording];
CGRect imageFrame2 = CGRectMake(210, 415, 40, 40);
cameraModeBtn= [[MyCustomButton alloc] initWithIndexPath:nil];
[cameraModeBtn setBackgroundImage: [UIImage imageNamed:@"clap.png"] forState:UIControlStateNormal];
[cameraModeBtn setFrame:imageFrame2];
[cameraModeBtn addTarget:self action:@selector(changeCameraMode) forControlEvents:UIControlEventTouchUpInside];
[overlayView addSubview:cameraModeBtn];
picker.cameraOverlayView = overlayView;
[controller presentModalViewController:picker animated:YES];
}
return YES;
}
-(void)startRecordingAction
{
startRecording.enabled = NO;
stopRecording.enabled = YES;
BOOL recording = [picker startVideoCapture];
if(recording == YES)
{
timer = [NSTimer scheduledTimerWithTimeInterval:1.0f target:self selector:@selector(updateCounter:) userInfo:nil repeats:YES];
printf("\n Recording Started....!!");
}
}
-(void)stopRecording
{
startRecording.enabled = YES;
stopRecording.enabled = NO;
[picker stopVideoCapture];
[timer invalidate];
NSString *durationStr = [NSString stringWithFormat:@"%d",numOfSeconds];
aCustObj.audioDuration = durationStr;
timeValue = 0;
minsValue = 0;
}
-(void)changeCameraMode
{
if(isCamera == YES)
{
isCamera = NO;
picker.cameraDevice = UIImagePickerControllerCameraDeviceFront;
}
else
{
isCamera = YES;
picker.cameraDevice = UIImagePickerControllerCameraDeviceRear;
}
}
- (void)updateCounter:(NSTimer *)theTimer
{
numOfSeconds++;
printf("\n number of seconds....%d",numOfSeconds);
timeValue++;
if (timeValue == 60)
{
timeValue = 0;
minsValue++;
}
//NSString* str1 = @"0:"
NSString* strVal = [NSString stringWithFormat:@"%d:%d",minsValue,timeValue];
UIFont *uiFont1 = [UIFont boldSystemFontOfSize:20];
[durationLabel setFont:uiFont1];
durationLabel.text = strVal;
durationLabel.textColor = [UIColor redColor];
durationLabel.numberOfLines = 1;
durationLabel.backgroundColor = [UIColor clearColor];
[overlayView addSubview:durationLabel];
}
- (NSData *)generatePostDataForData:(NSData *)uploadData
{
UIImage *theImage1 = [UIImage imageWithData:aCustObj.picture];
NSData *imageData = UIImageJPEGRepresentation(theImage1,0.9);
printf("\n length of imageData...%d",[imageData length]);
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"yyyyMMddhhmmss"];
NSString *fromDateString=[dateFormatter stringFromDate:[NSDate date]];
// Generate the post header:
NSString *[email protected]"";
fileNameString=[fileNameString stringByAppendingString:fromDateString];
fileNameString = [fileNameString stringByAppendingString:@".3gp"];
printf("\n fileNameString....%s",[fileNameString UTF8String]);
NSString* finalPostString=[NSString stringWithFormat:@"--AaB03x\r\nContent-Disposition: form-data; name=\"uploadedfile\"; filename=\"%s\"\r\nContent-Type: application/octet-stream\r\nContent-Transfer-Encoding: binary\r\n\r\n",[fileNameString UTF8String]];
NSString *post = [NSString stringWithCString:[finalPostString UTF8String] encoding:NSASCIIStringEncoding];
NSData *postHeaderData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
// Generate the mutable data variable:
NSMutableData *postData = [[NSMutableData alloc] initWithLength:[postHeaderData length] ];
[postData setData:postHeaderData];
// Add the video:
[postData appendData: uploadData];
// Add the closing boundry:
[postData appendData: [@"\r\n--AaB03x\r\n" dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]];
if([aCustObj.messageTitle length]>0)
{
printf("\n messageTitle.......%s",[aCustObj.messageTitle UTF8String]);
[postData appendData:[[NSString stringWithFormat:@"--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"title\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:aCustObj.messageTitle] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithFormat:@"\r\n--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
if([aCustObj.phoneNumber length]>0)
{
printf("\n phoneNumber in video upload method...%s",[aCustObj.phoneNumber UTF8String]);
[postData appendData:[[NSString stringWithFormat:@"--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"phoneNo\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:aCustObj.phoneNumber] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithFormat:@"\r\n--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
if([aCustObj.userName length]>0)
{
printf("\n Username in video upload method...%s",[aCustObj.userName UTF8String]);
[postData appendData:[[NSString stringWithFormat:@"--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"name\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:aCustObj.userName] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithFormat:@"\r\n--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
if([aCustObj.audioDuration length]>0)
{
[postData appendData:[[NSString stringWithFormat:@"--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"duration\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:aCustObj.audioDuration] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithFormat:@"\r\n--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
if([aCustObj.imeiNumber length]>0)
{
[postData appendData:[[NSString stringWithFormat:@"--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"imei\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:aCustObj.imeiNumber] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithFormat:@"\r\n--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
if([aCustObj.latitude length]>0)
{
printf("\n latitude value...%s",[aCustObj.latitude UTF8String]);
[postData appendData:[[NSString stringWithFormat:@"--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"latitude\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:aCustObj.latitude] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithFormat:@"\r\n--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
if([aCustObj.longitude length]>0)
{
[postData appendData:[[NSString stringWithFormat:@"--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"longitude\"\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:aCustObj.longitude] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithFormat:@"\r\n--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
if([imageData length]>0)
{
printf("\n Image..");
[postData appendData:[[NSString stringWithFormat:@"--AaB03x\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name=\"picture\"; filename=\"test.png\"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\nContent-Transfer-Encoding: binary\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:imageData];
[postData appendData:[[NSString stringWithFormat:@"\r\n--AaB03x--"] dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:YES]];
}
// Return the post data:
return postData;
}
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
timer = [NSTimer scheduledTimerWithTimeInterval:10.0 target:self selector:@selector(myMethod) userInfo:nil repeats:YES];
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
printf("\n mediaType = %s",[mediaType UTF8String]);
if ([mediaType isEqualToString:@"public.movie"])
{
NSLog(@"got a movie");
NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
NSData *webData = [NSData dataWithContentsOfURL:videoURL];
webData1 = [webData copy];
myAlertView = [[UIAlertView alloc] initWithTitle:@"Enter the Message title" message:@"................." delegate:self cancelButtonTitle:@"Cancel" otherButtonTitles:@"Ok",nil];
CGAffineTransform myTransform = CGAffineTransformMakeTranslation(0.0, 80.0);
[myAlertView setTransform:myTransform];
[myAlertView addSubview:messageTitleTextField];
[messageTitleTextField setFont:[UIFont boldSystemFontOfSize:14]];
messageTitleTextField.returnKeyType = UIReturnKeyDone;
messageTitleTextField.keyboardAppearance = UIKeyboardAppearanceDefault;
messageTitleTextField.keyboardType = UIKeyboardTypeDefault;
messageTitleTextField.delegate = self;
[myAlertView show];
//[mview addSubview:myAlertView];
UILabel *theTitle = [myAlertView valueForKey:@"_titleLabel"];
[theTitle setTextColor:[UIColor orangeColor]];
UILabel *theBody = [myAlertView valueForKey:@"_bodyTextLabel"];
[theBody setTextColor:[UIColor whiteColor]];
UIImage *theImage2 = [UIImage imageNamed:@"voicebg.png"];
theImage2 = [theImage2 stretchableImageWithLeftCapWidth:16 topCapHeight:16];
CGSize theSize = [myAlertView frame].size;
UIGraphicsBeginImageContext(theSize);
[theImage2 drawInRect:CGRectMake(0, 0, theSize.width, theSize.height)];
theImage2 = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
myAlertView.layer.contents = (id)[theImage2 CGImage];
[myAlertView release];
[timer invalidate];
//[webData release];
[picker dismissModalViewControllerAnimated:YES];
}
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
printf("length of webdata...%d",[webData1 length]);
if(alertView == myAlertView)
{
if (buttonIndex == 0)
{
[self post:webData1];
}
else
{
[self post:webData1];
}
}
}
- (void)post:(NSData *)fileData
{
NSLog(@"POSTING");
// Generate the postdata:
NSData *postData = [self generatePostDataForData: fileData];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
// Setup the request:
NSMutableURLRequest *uploadRequest = [[[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://123.237.186.221:8080/uploadIphone/videoUpload.jsp"] cachePolicy: NSURLRequestReloadIgnoringLocalCacheData timeoutInterval: 30 ] autorelease];
[uploadRequest setHTTPMethod:@"POST"];
[uploadRequest setValue:postLength forHTTPHeaderField:@"Content-Length"];
[uploadRequest setValue:@"multipart/form-data; boundary=AaB03x" forHTTPHeaderField:@"Content-Type"];
[uploadRequest setHTTPBody:postData];
// Execute the request:
NSURLConnection *conn=[[NSURLConnection alloc] initWithRequest:uploadRequest delegate:self];
if (conn)
{
// Connection succeeded (even if a 404 or other non-200 range was returned).
NSLog(@"sucess");
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Got Server Response" message:@"Success" delegate:nil cancelButtonTitle:@"OK" otherButtonTitles:nil];
[alert show];
[alert release];
}
else
{
// Connection failed (cannot reach server).
NSLog(@"fail");
}
}
任何人的幫助，我將非常感激。
在此先感謝。
Nani。
我已經完成了根據您的建議。當我點擊開始錄製我開始計時器，當我點擊停止按鈕時，我計算了持續時間。但問題是當我點擊到停止按鈕停止錄製方法調用和選擇器關閉。停止後我需要預覽捕獲的視頻並將其發佈到服務器。如何定製捕獲的視頻的預覽。 – Monish 2010-09-24 13:53:03
@Monish - 確定，這與您的原始問題看起來非常不同。你可以請更新一下這個問題的徹底描述，因爲你顯然不是在尋找被捕獲的視頻的持續時間嗎？:) – willcodejavaforfood 2010-09-24 13:58:37
Iam自定義UIImagePickerCOntroller.I有5個按鈕1）開始記錄2）停止記錄3）預覽4）前置攝像頭或後置攝像頭5）發佈到服務器。在這裏，當我點擊開始錄製按鈕，我打電話的方法startVideoCapture，我啓動計時器的持續時間，當我點擊停止按鈕時，我打電話給stopVideoCapture方法，並使計時器無效並計算持續時間，我還需要預覽捕獲的視頻可以你請告訴我如何做到這一點。我將用我的代碼更新這篇文章。 – Monish 2010-09-24 14:06:50