The Android SDK provides a number of mechanisms for the implementation of audio recording and playback. This chapter has looked at two of these, in the form of the MediaPlayer and MediaRecorder classes. Having covered the theory of using these techniques, this chapter worked through the creation of an example application designed to record and then play back audio. In the course of working with audio in Android, this chapter also looked at the steps involved in ensuring that the device on which the application is running has a microphone before attempting to record audio. The use of external storage in the form of an SD card was also covered.
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