AssetManager assetManager = getAssets();
try {
String[] files = assetManager.list("ZiGenImageFolder");
for(int i=0; i<files.length; i++)
{
Log.d("File Name:", files[i]);
}
}
catch (IOException e1) {
e1.printStackTrace();
}

1、OnKeyboardActionListener功能；
private OnKeyboardActionListener hcOnKeyboardActionListener = new OnKeyboardActionListener()
{
public void onPress(int primaryCode)
{
if(primaryCode>=0 && primaryCode<=5)
{
typingState.typeShuMa4NumPad((byte)primaryCode);
if(typingState.m1<10)
{
passMassage2Activity(typingState.m1);
}
else
{
int ind = CharSet_Model.shuMaToIndex(typingState.m1);
charSetModel.playSound(ind, 1.0f);
passMassage2Activity(typingState.m1);
typingState.clearTypingState();
}
}
else
{
typingState.typeShuMa4NumPad((byte)primaryCode);
int index = CharSet_Model.shuMaToIndex(typingState.m1);
if(index>=0 && index<25)
{
charSetModel.playSound(index, 1.0f);
passMassage2Activity(typingState.m1);
typingState.clearTypingState();
}
}
return;
}

public void onRelease(int primaryCode) {
if(primaryCode == 123) //Switch keyboard
{
isNumPad = !isNumPad;
setupKeyboard(isNumPad);
if(isNumPad)
passMassage2Activity((byte)122); //numpad
else
passMassage2Activity((byte)123); //big keyboard

return;
}
else if(primaryCode == -1) //go to previous activity
{
//super.onBackPressed();
passMassage2Activity((byte)-1);
return;
}
else if(primaryCode == 88) //Get help
{

}

return;
}
…..
}

private OnMaTypeListener myTypelistener;
public interface OnMaTypeListener {
void onMaTyped(View v, byte shuMa);
}

public void setOnMaTypeListener(OnMaTypeListener listener) {
myTypelistener = listener;
}