iPad2 で完全に動作するアプリがありますが、iPad 3 でクラッシュしたために Apple に拒否されました。
クラッシュ ログをシンボル化し、クラッシュを以下の方法に絞り込みました。
-(void)mergeTwoVideos {
//AVExport (oddly) has a problem with file name already existing - therefore check if file already exists and delete if needed.
NSFileManager *fileManager = [NSFileManager defaultManager];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *writablePath = [documentsDirectory stringByAppendingPathComponent:@"FinishedVideo.mov"];
if([fileManager fileExistsAtPath:writablePath]){
NSLog(@"Problem - file already exists");
[fileManager removeItemAtPath:writablePath error:NULL];
}
else{
NSLog(@"No Problem - New File");
}
//Instantiate AVMutable Composition.
CMTime nextClipStartTime = kCMTimeZero;
AVURLAsset* a_videoAsset = [AVURLAsset URLAssetWithURL: [assetURLArray objectForKey:kIntroVideo] options:nil];
AVMutableComposition* mixComposition = [AVMutableComposition composition];
CMTimeRange a_timeRange = CMTimeRangeMake(kCMTimeZero,a_videoAsset.duration);
AVMutableCompositionTrack *a_compositionVideoTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
AVMutableCompositionTrack *compositionAudioTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
[a_compositionVideoTrack insertTimeRange:a_timeRange ofTrack:[[a_videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:nextClipStartTime error:nil];
nextClipStartTime = CMTimeAdd(nextClipStartTime, a_timeRange.duration);
AVURLAsset* b_videoAsset = [AVURLAsset URLAssetWithURL: [assetURLArray objectForKey:kMainVideo] options:nil];
CMTimeRange b_timeRange = CMTimeRangeMake(kCMTimeZero, b_videoAsset.duration);
[a_compositionVideoTrack insertTimeRange:b_timeRange ofTrack:[[b_videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:nextClipStartTime error:nil];
[compositionAudioTrack insertTimeRange:b_timeRange ofTrack:[[b_videoAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0] atTime:nextClipStartTime error:nil];
nextClipStartTime = CMTimeAdd(nextClipStartTime, b_videoAsset.duration);
AVURLAsset* c_videoAsset = [AVURLAsset URLAssetWithURL: [assetURLArray objectForKey:kIntroVideo] options:nil];
CMTimeRange c_timeRange = CMTimeRangeMake(kCMTimeZero, c_videoAsset.duration);
[a_compositionVideoTrack insertTimeRange:c_timeRange ofTrack:[[c_videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:nextClipStartTime error:nil];
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetMediumQuality];
NSString *exportVideoPath = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/FinishedVideo.mov"];
NSURL *exportURL = [NSURL fileURLWithPath:exportVideoPath];
exportSession.outputURL = exportURL;
exportSession.shouldOptimizeForNetworkUse = YES;
exportSession.outputFileType = AVFileTypeQuickTimeMovie;
[exportSession exportAsynchronouslyWithCompletionHandler:^{
switch (exportSession.status) {
case AVAssetExportSessionStatusFailed:{
NSLog (@"FAIL");
break;
}
case AVAssetExportSessionStatusCompleted: {
NSLog (@"SUCCESS");
[exportSession release];
[self finishMergingProcess];
}
};
}];
}
シンボリック化されたクラッシュ ログは次のとおりです。
Thread 4 name: Dispatch queue: com.apple.root.default-priority
Thread 4 Crashed:
0 libsystem_kernel.dylib 0x36d4832c __pthread_kill + 8
1 libsystem_c.dylib 0x3173a208 pthread_kill + 48
2 libsystem_c.dylib 0x31733298 abort + 88
3 libc++abi.dylib 0x36c10f64 abort_message + 40
4 libc++abi.dylib 0x36c0e346 _ZL17default_terminatev + 18
5 libobjc.A.dylib 0x3682b350 _objc_terminate + 140
6 libc++abi.dylib 0x36c0e3be _ZL19safe_handler_callerPFvvE + 70
7 libc++abi.dylib 0x36c0e44a std::terminate() + 14
8 libc++abi.dylib 0x36c0f798 __cxa_throw + 116
9 libobjc.A.dylib 0x3682b290 objc_exception_throw + 88
10 CoreFoundation 0x31f1f9d4 -[__NSArrayM objectAtIndex:] + 264
11 AppName 0x00023d6e -[ViewController mergeTwoVideos] (ViewController.m:746)
12 libdispatch.dylib 0x31eb4c52 _dispatch_call_block_and_release + 6
13 libdispatch.dylib 0x31eb7810 _dispatch_worker_thread2 + 252
14 libsystem_c.dylib 0x316f5df4 _pthread_wqthread + 288
15 libsystem_c.dylib 0x316f5cc8 start_wqthread + 0
iPad 3 でこのクラッシュを引き起こしている原因について誰か洞察を提供できますか? イライラするのは、自分でテストするための iPad3 を所有していないことです。
ありがとうございました !