一、发现问题

private int CLICK_QUERY = 1;

private int CLICK_RESET = 2;

@Override

public void onClick(View v) {  int tag = (Integer) v.getTag();  switch (tag)  {   case CLICK_QUERY:    query();   break;   case CLICK_RESET:    reset();   break;  } } 编译时一直报错：CLICK_QUERY 和CLICK_RESET——case expressions must be constant expressions

 

二、解决问题

case后面必须跟常量，必须要常量，将上面两个变量声明为final即可。

private final int CLICK_QUERY = 1;

private final int CLICK_RESET = 2;