文件 ：frameworks/base/core/java/android/widget/MediaController.java

private View.OnClickListener mRewListener = new View.OnClickListener() { public void onClick(View v) { int pos = mPlayer.getCurrentPosition(); pos -= 5000; // milliseconds mPlayer.seekTo(pos); setProgress(); show(sDefaultTimeout); } }; private View.OnClickListener mFfwdListener = new View.OnClickListener() { public void onClick(View v) { int pos = mPlayer.getCurrentPosition(); pos += 15000; // milliseconds mPlayer.seekTo(pos); setProgress(); show(sDefaultTimeout); } };