上图：
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原因：使用了全局断点！
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The problem was I normally develop with a breakpoint set to "All Exceptions", and the actual exception thrown was cxa throw. Which apparently turns out to be in C++ libraries that are used to implement AVAudioPlayer. By changing the breakpoint to "All Objective-C Exceptions" the program ran fine. (This can be done by editing the breakpoint and changing the Exception field to Objective-C.
这里写图片描述
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