iOS：尝试播放video时，应用程序不时崩溃

请有人帮帮我！ 我使用XCDYouTubeKit来实现来自YouTube的video播放。 这是我的代码：

 self.videoPlayerVC = [[XCDYouTubeVideoPlayerViewController alloc] initWithVideoIdentifier: videoID]; [self.videoPlayerVC presentInView: self.videoContainerView]; [self.videoPlayerVC.moviePlayer prepareToPlay]; 

我有两个问题：

1）在应该显示应用程序的容器中，只显示白色屏幕，因此可以听到声音。 UI反应触动。

2）加载video的第一张照片后，应用程序不时崩溃（如果xcode冻结了应用程序，则可以听到video的声音）。

错误是：

 Thread 1: EXC_BAD_ACCESS(code=1, address = 0xc) 

主要堆栈：

 libobjc.A.dylib`objc_msgSend: 0x3af10620: cbz r0, 0x3af1065e ; objc_msgSend + 62 0x3af10622: ldr.w r9, [r0] 0x3af10626: ldrh.w r12, [r9, #12] <---Here it crashes 0x3af1062a: ldr.w r9, [r9, #8] 0x3af1062e: and.w r12, r12, r1 0x3af10632: add.w r9, r9, r12, lsl #3 0x3af10636: ldr.w r12, [r9] 0x3af1063a: teq.w r12, r1 0x3af1063e: bne 0x3af10646 ; objc_msgSend + 38 0x3af10640: ldr.w r12, [r9, #4] 0x3af10644: bx r12 0x3af10646: cmp.w r12, #0x1 0x3af1064a: blo 0x3af10658 ; objc_msgSend + 56 0x3af1064c: it eq 0x3af1064e: ldreq.w r9, [r9, #4] 0x3af10652: ldr r12, [r9, #8]! 0x3af10656: b 0x3af1063a ; objc_msgSend + 26 0x3af10658: ldr.w r9, [r0] 0x3af1065c: b 0x3af108a0 ; _objc_msgSend_uncached 0x3af1065e: mov.w r1, #0x0 0x3af10662: bx lr 0x3af10664: nop 0x3af10666: nop 0x3af10668: nop 0x3af1066a: nop 0x3af1066c: nop 0x3af1066e: nop 0x3af10670: nop 0x3af10672: nop 0x3af10674: nop 0x3af10676: nop 0x3af10678: nop 0x3af1067a: nop 0x3af1067c: nop 0x3af1067e: nop 

而在UIAplicationMain上

 0x330007f2: mov r0, r5 0x330007f4: blx 0x335c3d50 ; symbol stub for: CFRunLoopSourceSignal$shim 0x330007f8: b 0x33000842 ; UIApplicationMain + 1090 0x330007fa: movw r0, #0xf172 0x330007fe: movt r0, #0x8b2 0x33000802: add r0, pc 0x33000804: ldr r1, [r0] 0x33000806: mov r0, r11 0x33000808: blx 0x335c3d50 ; symbol stub for: CFRunLoopSourceSignal$shim 0x3300080c: movw r1, #0xf264 0x33000810: movt r1, #0x8b2 0x33000814: add r1, pc 0x33000816: ldr r1, [r1] 0x33000818: blx 0x335c3d50 ; symbol stub for: CFRunLoopSourceSignal$shim 0x3300081c: movw r1, #0xf2b8 0x33000820: movt r1, #0x8b2 0x33000824: add r1, pc 0x33000826: ldr r1, [r1] 0x33000828: blx 0x335c3d50 ; symbol stub for: CFRunLoopSourceSignal$shim 0x3300082c: mov r2, r0 0x3300082e: movw r0, #0xf898 0x33000832: movt r0, #0x8b2 0x33000836: movs r3, #0x1 0x33000838: add r0, pc 0x3300083a: ldr r1, [r0] 0x3300083c: mov r0, r5 0x3300083e: blx 0x335c3d50 ; symbol stub for: CFRunLoopSourceSignal$shim 0x33000842: movw r0, #0xf0a6 0x33000846: movt r0, #0x8b2 0x3300084a: add r0, pc 0x3300084c: ldr r1, [r0] 0x3300084e: ldr r0, [sp, #0x14] 0x33000850: blx 0x335c3d50 ; symbol stub for: CFRunLoopSourceSignal$shim 0x33000854: movw r0, #0xf870 0x33000858: movt r0, #0x8b2 0x3300085c: movw r2, #0x431e 0x33000860: movt r2, #0x8b7 0x33000864: add r0, pc 0x33000866: add r2, pc 0x33000868: ldr r1, [r0] 0x3300086a: ldr r0, [r2] 0x3300086c: blx 0x335c3d50 ; symbol stub for: CFRunLoopSourceSignal$shim 0x33000870: movs r0, #0x0 <------ Here it crashes 0x33000872: add sp, #0x18 0x33000874: pop.w {r8, r10, r11} 0x33000878: pop {r4, r5, r6, r7, pc} 0x3300087a: nop 0x3300087c: mov r8, r8 0x3300087e: mov r8, r8