Question

我尝试对保存在内存流中的缓冲区进行一些连接。然后，当我试图播放整个缓冲区时，它给出了一个例外：

发生了'System.ArgumentException'类型的异常   Microsoft.Xna.Framework.ni.dll但未在用户代码中处理

附加信息：确保缓冲区长度不为零   满足音频格式的块对齐要求。

当我调试mStrm仍然是0时，找不到原因。

NoMethodError: undefined method `name' for nil:NilClass
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/aasm-4.1.1/lib/aasm/core/state.rb:15:in `=='
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/aasm-4.1.1/lib/aasm/instance_base.rb:61:in `block in state_object_for_name'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/aasm-4.1.1/lib/aasm/instance_base.rb:61:in `each'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/aasm-4.1.1/lib/aasm/instance_base.rb:61:in `find'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/aasm-4.1.1/lib/aasm/instance_base.rb:61:in `state_object_for_name'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/aasm-4.1.1/lib/aasm/aasm.rb:62:in `aasm_fire_event'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/aasm-4.1.1/lib/aasm/persistence/active_record_persistence.rb:175:in `block in aasm_fire_event'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `block in transaction'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/transaction.rb:188:in `within_new_transaction'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/activerecord-4.2.0/lib/active_record/connection_adapters/abstract/database_statements.rb:213:in `transaction'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/activerecord-4.2.0/lib/active_record/transactions.rb:220:in `transaction'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/aasm-4.1.1/lib/aasm/persistence/active_record_persistence.rb:175:in `aasm_fire_event'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/aasm-4.1.1/lib/aasm/base.rb:81:in `block in event'
    from (irb):13
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/railties-4.2.0/lib/rails/commands/console.rb:110:in `start'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/railties-4.2.0/lib/rails/commands/console.rb:9:in `start'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:68:in `console'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/railties-4.2.0/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /Users/MadisonRong/.rvm/gems/ruby-2.0.0-p598/gems/railties-4.2.0/lib/rails/commands.rb:17:in `<top (required)>'
    from bin/rails:4:in `require'
    from bin/rails:4:in `<main>'2.0.0-p598 :014 >

我的目标是Windows Phone 8.1 silverlight平台

Answer 1

我得到了问题的解决方案：在调用CopyTo（）

之前执行以下操作

mStrmStartDelimiter.Position = 0;
mStrmEndDelimiter.Position = 0;

Stream.CopyTo（newStream）返回Length 0

1 个答案: