目录Activity创建 Activity在清单文件中声明 Activity使用 Intent 过滤器启动 Activity结束 Activity实现生命周期回调保存 Activity 状态处理配置变更协调 ActivityActivity
I\'ve keep having an exception thrown, on and on. When i try to make a new Sequencer object, i keep getting the javax.sound.midi.MidiUnavailableException: Audio Device Unavailable exception.
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