关于扩展EditText的问题
一个拓展EditText的class，如下
public class test extends EditText {
public test(Context context, AttributeSet attrs)
{
super(context, attrs);
}
@Override
public boolean onKeyPreIme (int keyCode, KeyEvent event)
{
if (event.getKeyCode() == android.view.KeyEvent.KEYCODE_BACK){
//to do something
}
return super.onKeyPreIme(keyCode, event);
}
}