Hi everyone i got a problem to play a video in iOS 5. When I'm building the program i get a warning "local declaration of hides instance variables" and when i run the program and tap the button i get a "SIGABRT". And i don't know what to do, all the help i can get is aprriciated!!
Thx in advance
MY .h file
#import <MediaPlayer/MediaPlayer.h>
#interface MainViewController : UIViewController {
MPMoviePlayerController *moviePlayer;
}
-(IBAction)Video:(id)sender;
#end
MY .m file
#import "MainViewController.h"
#interface MainViewController ()
#end
#implementation MainViewController
-(IBAction)Video:(id)sender {
MPMoviePlayerController *moviePlayer;
NSString *path = [[NSBundle mainBundle] pathForResource:#"big-buck-bunny-clip" ofType:#"m4v"];
NSURL *videoURL = [NSURL fileURLWithPath:path];
moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
[moviePlayer setControlStyle:MPMovieControlStyleDefault];
[moviePlayer.view setFrame: self.view.bounds];
[self.view addSubview: moviePlayer.view];
[moviePlayer prepareToPlay];
[moviePlayer play];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
#end
local declaration of hides instance variables
remove the first line of your -(IBAction)Video:(id)sender method.
MPMoviePlayerController *moviePlayer; //this line;
because you already have declared such variable in your .h file.
Means you declared the same variable names two times, one in .h file and another in .m file.
Related
I've been through all the posts in StackOverflow but I can't get a full example of how to get a video from the bundle and reproduce it in a controller.
I've tried many things but my screen appeared blank or black.
In the last amend, my video remains like this:
no error is thrown on the log. This is my code:
.h (please ignore the name of the controller, it will be finally a camera)
#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#import <AVKit/AVKit.h>
#interface NativeCameraViewController : UIViewController
#end
.m
#import "NativeCameraViewController.h"
#interface NativeCameraViewController ()
#property (nonatomic, retain) AVPlayerViewController *avPlayerViewcontroller;
#end
#implementation NativeCameraViewController
- (void)viewDidLoad {
[super viewDidLoad];
UIView *view = self.view;
NSString *stringPath = [[NSBundle mainBundle]pathForResource:#"video" ofType:#"mov"];
NSURL *fileURL = [NSURL fileURLWithPath:stringPath];
AVPlayerViewController *playerViewController = [[AVPlayerViewController alloc] init];
playerViewController.player = [AVPlayer playerWithURL:fileURL];
self.avPlayerViewcontroller = playerViewController;
[self resizePlayerToViewSize];
[view addSubview:playerViewController.view];
view.autoresizesSubviews = TRUE;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void) resizePlayerToViewSize
{
CGRect frame = self.view.frame;
NSLog(#"frame size %d, %d", (int)frame.size.width, (int)frame.size.height);
self.avPlayerViewcontroller.view.frame = frame;
}
#end
and that's what I've got so far.
My video is correctly on the Bundle, called video.mov:
I've tried both linking and copying. Same result.
What am I doing wrong??
Thank you very much in advance.
I'd like to avoid using MPMoviePlayerController since it's deprecated in iOS9
It was actually my fault...
I was trying to reproduce an alias.
When you have 20.000 videos and 30.000 resources this things happen.
Instead of using AVPlayer, use MPMoviePlayerController class:
NSString *path = [[NSBundle mainBundle] pathForResource:#"video" ofType:#"mov"];
NSURL *url = [NSURL fileURLWithPath:path];
MPMoviePlayerController *player = [[MPMoviePlayerController alloc] initWithContentURL:url];
[player play];
When calling the numberOfLoops method like so:
[_player setNumberOfLoops:-1];
I get the following error:
-[AVPlayer setNumberOfLoops:]: unrecognized selector sent to instance 0x7d52d30
How can this be fixed?
Code:
Header:
#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#interface ViewController : UIViewController {
}
#property (strong, nonatomic) AVAudioPlayer *player;
- (IBAction)playMusic:(id)sender;
#end
Implementation:
#import "ViewController.h"
#import <AVFoundation/AVFoundation.h>
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (IBAction)playMusic:(id)sender {
_player = [AVPlayer playerWithURL:[NSURL URLWithString:#"http://urlpath.wav"]];
[_player setNumberOfLoops:-1];
[_player prepareToPlay];
[_player play];
}
#end
Thank you for your time,
Yoni201.
You've created an instance of AVPlayer, not an instance of AVAudioPlayer. It looks like you want to be creating an AVAudioPlayer instead (as is indicated by your choice of that class for the actual player property on your class. AVAudioPlayer actually has the numberOfLoops property, while AVPlayer does not. For more information, see the documentation for AVAudioPlayer and AVPlayer.
AVPlayer doesn't have a numberOfLoops property. That is a property of `AVAudioPlayer. Don't ignore compiler warnings when you build your app.
Also, you defined _player to be an AVAudioPlayer but you alloc/init AVPlayer.
Change your code to:
NSError *error = nil;
AVAudioPlayer *player = [[AVAudioPlayer alloc] initWithContentsOfURL:[NSURL URLWithString:#"http://urlpath.wav"] error:&error];
if (player) {
[player setNumberOfLoops:-1];
[player prepareToPlay];
[player play];
self.player = player;
} else {
NSLog(#"Error create audio player: %#", error);
}
I think that the method you are calling doesn't exist (acceosing to your error).
Try: _player.numberOfLoops=-1
Hi all,
Please look at the code below, i want to be able to stop the sound when the same button is clicked, another button is clicked and even when going back to the home screen. Not sure what to do here,
FoxViewController.m
#import "FoxViewController.h"
#import <AVFoundation/AVAudioPlayer.h>
AVAudioPlayer *newPlayer_Fox;
#interface FoxViewController ()
#end
#implementation FoxViewController
-(IBAction) Fox;
{
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource: #"new"ofType: #"mp3"];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: soundFilePath];
newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL: fileURL error: nil];
[newPlayer play];
}
- (id)initWithNibName:(NSString*)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end
FoxViewController.h
#import <UIKit/UIKit.h>
#import <AVFoundation/AVFoundation.h>
#import <AudioToolbox/AudioToolbox.h>
AVAudioPlayer *newPlayer;
#interface FoxViewController : UIViewController
-(IBAction)Fox;
#end
Your help is much appreciated, Justin.
Maintain one flag say BOOL soundPlay as global variable in FoxViewController.h file
Now in FoxViewController.m's viewDidLoad method
soundPlay = TRUE;
Action button will be like this:
-(IBAction) Fox;
{
if(soundPlay){
soundPlay = FALSE; //made false for next time another condition will be used.
NSString *soundFilePath = [[NSBundle mainBundle] pathForResource: #"new"ofType: #"mp3"];
NSURL *fileURL = [[NSURL alloc] initFileURLWithPath: soundFilePath];
newPlayer = [[AVAudioPlayer alloc] initWithContentsOfURL: fileURL error: nil];
[newPlayer play];
}
else
{
if([newPlayer isPlaying])
{
[newPlayer stop];
}
}
}
For stopping sound in background add this method if not added
-(void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:animated];
//stop background sound
if([newPlayer isPlaying])
{
[newPlayer stop];
}
}
Summarizing, the sentence to STOP the sound file is:
AudioServicesDisposeSystemSoundID (soundFileObject);
Explanation (Important to understand):
I have a table view with 18 different sound files. When user select a row must sound the corresponding file and when select another row, it must STOP the previous sound and play other.
All this stuff it is necessary:
1) Add to your project "AudioToolbox.framework" inside "Build Phases", inside "Link Binary With Libraries"
2) In header file (in my project it calls "GenericTableView.h") add these sentences:
#include <AudioToolbox/AudioToolbox.h>
CFURLRef soundFileURLRef;
SystemSoundID soundFileObject;
#property (readwrite) CFURLRef soundFileURLRef;
#property (readonly) SystemSoundID soundFileObject;
3) In implement file (in my project it calls "GenericTableView.m") add these sentences:
#synthesize soundFileURLRef;
#synthesize soundFileObject;
And inside your "Action" implementation or in my case, in:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
//
// That is the question: a way to STOP sound file
//
// -----------------------------------------------------------------------
// Very important to STOP the sound file
AudioServicesDisposeSystemSoundID (soundFileObject);
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
// In my project "rowText" is a field that save the name of the
// corresponding sound (depending on row selected)
// It can be a string, #"Alarm Clock Bell" in example
// Create the URL for the source audio file.
// URLForResource:withExtension: method is new in iOS 4.0.
NSURL *soundURL = [[NSBundle mainBundle] URLForResource:rowText withExtension:#"caf"];
// Store the URL as a CFURLRef instance
self.soundFileURLRef = (CFURLRef) [soundURL retain];
// Create a system sound object representing the sound file.
AudioServicesCreateSystemSoundID (soundFileURLRef,&soundFileObject);
AudioServicesPlaySystemSound (soundFileObject);
[soundURL release];
}
4) Finally, in the same implement file (in my project it calls "GenericTableView.m"):
- (void)dealloc {
[super dealloc];
AudioServicesDisposeSystemSoundID (soundFileObject);
//CFRelease (soundFileURLRef);
}
I must to comment "CFRelease (soundFileURLRef)" because the App ends unexpectedly when user leaves the table view.
All this code is proportioned by Apple. In this link you can find even a sample code to test directly in your iPhone simulator.
https://developer.apple.com/library/ios/samplecode/SysSound/Introduction/Intro.html#//apple_ref/doc/uid/DTS40008018-Intro-DontLinkElementID_2
This is my first iOS app, so I am probably missing something very simple. Please be kind. I have been tearing my hair out and I could really use some help.
Overview Of App
Basically, this is a single page application that just loads a UIWebView. I have an external accessory (bluetooth barcode scanner) that I connect and basically what I want to do is when the the app receives a scan, I want to call a method in my ViewController and update the UIWebView accordingly.
What Is Working
I am able to connect the scanner, load the first view, which loads the initial webpage, scan a barcode and call the method in my controller.
My Problem
I can't seem to figure out how to update the UIWebView from the method in my controller. It logs the url string to my debugger area, but never actually updates the webview. I am pretty sure I have some delegation wrong or something with my webview instance. There must be some glue code here that I am missing.
My Code HelloWorldViewController.h
#import <UIKit/UIKit.h>
#import "KScan.h"
#interface HelloWorldViewController : UIViewController <UIWebViewDelegate> {
IBOutlet UIWebView *page;
IBOutlet UILabel *myLabel;
Boolean IsFirstTime;
KScan *kscan;
}
- (void)setFirstTime;
- (void)DisplayConnectionStatus;
- (void)DisplayMessage:(char *)Message;
- (void)newBarcodeScanned:(NSString *)barcode;
- (void)loadBarcodePage:(NSString *)barcode;
#property (nonatomic, retain) KScan *kscan;
#property (nonatomic, retain) UIWebView *page;
#property (nonatomic, retain) UILabel *myLabel;
#end
My Code HelloWorldViewController.m
#import "HelloWorldViewController.h"
#import "common.h"
#implementation HelloWorldViewController
#synthesize myLabel;
#synthesize page;
#synthesize kscan;
- (void)setFirstTime
{
IsFirstTime = true;
}
- (void)viewDidLoad
{
self.kscan = [[KScan alloc] init];
[super viewDidLoad];
page.scrollView.bounces = NO;
//page.delegate = self;
[page loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:#"http://192.168.0.187:3000"]]];
}
- (void) newBarcodeScanned:(NSString *)barcode
{
NSLog(#"%s[%#]",__FUNCTION__, barcode);
[self loadBarcodePage:barcode];
}
- (void)loadBarcodePage:(NSString *)barcode
{
NSLog(#"%s",__FUNCTION__);
NSString *url = [[NSString alloc] initWithFormat:#"http://www.google.com/%#", barcode];
NSLog(#"%#", url);
[page loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];
}
- (void)viewDidUnload
{
[myLabel release];
myLabel = nil;
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation
{
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
} else {
return YES;
}
}
- (void)dealloc {
[page release];
[kscan release];
[myLabel release];
[super dealloc];
}
#end
Basically, I am just trying to load google.com into my page webview when scanning a barcode. My log statements are being logged with the correct URL, but this line of code doesn't work.
[page loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:url]]];
I am not getting any errors and my xCode debugging skills are not the greatest.
Any help would be greatly appreciated!
It looks like your webview is never allocated, or added to your main view. You are probably talking to a nil instance.
Unless your web view comes from a XIB file (which I doubt since it is not declared as an IBOutlet in your heder file) try adding something like this to your viewDidLoad:
self.page = [[UIWebView alloc] initWithFrame:self.view.bounds];
[self.view addSubview:self.page];
I'm new to these forums so I apologize for my noobieness. I did as thorough a search as I could, but I couldn't find anyone else with this issue, applogise if this has been covered elsewhere.
I've created a very simple example of my problem. I'm sure I'm missing something but I can't for the life of me figure out what.
I'm creating a UIWebView and adding it to a custom view controller that inherits from UIViewController. When the app loads in the iPad simulator, the uiwebview loads the desired page, but the UIWebView is entirely unresponsive. The webview does not pan or scroll and none of the in page links can be clicked. However, if you change the orientation of the webview suddleny everything works.
Thanks in advance for your help!!
AppDelegate header
#import <UIKit/UIKit.h>
#import "EditorViewController.h"
#interface FixEditorTestAppDelegate : NSObject <UIApplicationDelegate> {
UIWindow *window;
EditorViewController *editorView;
}
#property (nonatomic, retain) IBOutlet UIWindow *window;
#property (nonatomic, retain) EditorViewController *editorView;
#end
AppDelegate Implementation
#import "FixEditorTestAppDelegate.h"
#import "EditorViewController.h"
#implementation FixEditorTestAppDelegate
#synthesize window;
#synthesize editorView;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
NSLog(#"application is loading");
editorView = [[EditorViewController alloc] init];
[window addSubview:[editorView view]];
[window makeKeyAndVisible];
return YES;
}
- (void)dealloc {
[window release];
[editorView release];
[super dealloc];
}
#end
View Controller header
#import <UIKit/UIKit.h>
#interface EditorViewController : UIViewController <UIWebViewDelegate> {
UIWebView *webView;
}
#property (nonatomic, retain) UIWebView *webView;
#end
View Controller Implementation
#import "EditorViewController.h"
#implementation EditorViewController
#synthesize webView;
/*
// The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
if ((self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil])) {
// Custom initialization
}
return self;
}
*/
// Implement loadView to create a view hierarchy programmatically, without using a nib.
- (void)loadView {
NSLog(#"loadView called");
UIView *curView = [[UIView alloc] init];
webView = [[UIWebView alloc] init];
webView.frame = CGRectMake(20, 40, 728, 964);
webView.delegate = self;
webView.backgroundColor = [UIColor redColor];
[curView addSubview: webView];
self.view = curView;
[curView release];
}
//Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
[super viewDidLoad];
NSLog(#"viewDidLoad called");
NSURL *url = [[NSURL alloc] initWithString:#"http://www.nytimes.com"];
NSURLRequest *request = [[NSURLRequest alloc] initWithURL:url];
[webView loadRequest:request];
[url autorelease];
[request release];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
// Overriden to allow any orientation.
return YES;
}
- (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 {
webView.delegate = nil;
[webView release];
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
- (void)dealloc {
[super dealloc];
}
#end
You should really be loading this from a nib, but if you're going to create it programmatically, you probably want to add this to loadView:
webView.userInteractionEnabled = YES;
webView.scalesPageToFit = YES;
I'm going to go out on a limb here, as you aren't getting much response..
There is nothing wrong with this code (out on a limb! i haven't tested it). Neither is there anything wrong with not using a .nib (but really, you would have to have a reason, right?).
Using a nib doesn't do anything magic, just pretty much what you have done here.
Your problem must be elsewhere.. can you interact with a different kind of view? A button, say? Maybe it is something to do with the window setup?
The issue is with the extra UIView you have in there. It isn't needed, and I think the touch events aren't getting enabled. I tried out the code and it didn't work like you said. Then I changed the EditorViewController to this, and it works now (all I did was to remove the extra UIView) dragging and select links now works.
- (void)loadView {
NSLog(#"loadView called");
webView = [[UIWebView alloc] init];
webView.frame = CGRectMake(20, 40, 728, 964);
webView.delegate = self;
webView.backgroundColor = [UIColor redColor];
self.view = webView;
}