如何访问它们的try-catch里面的变量？ [英] How to access variables which are inside try-catch?

问题描述

林做这样的事情。

JSONArray json = uf.getAllRows();
(int x = 0; x <= json.length(); x++) {
JSONObject jo = json.getJSONObject(x); //Eclipse is suggesting that use try-catch here.

String name = jo.getString("username");
mainll[x] = new LinearLayout(this);
mainll[x].setId(x);
mainll[x].setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,   LayoutParams.WRAP_CONTENT));
mainll[x].setGravity(Gravity.CENTER);
.
.
.
.
}

如果我使用尝试捕捉比乔是不是在下面的行认可的：

if i use try catch than "jo" is not recognized at the following line:

String name = jo.getString("username");

谁能告诉我怎样才能解决这个问题？

Can anyone please tell me how can i solve this problem?

推荐答案

只是包装一切

try{
  JSONArray json = uf.getAllRows();
  (int x = 0; x <= json.length(); x++) {
  JSONObject jo = json.getJSONObject(x); //Eclipse is suggesting that use try-catch here.

  String name = jo.getString("username");
  mainll[x] = new LinearLayout(this);
  mainll[x].setId(x);
  mainll[x].setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
  mainll[x].setGravity(Gravity.CENTER);
}
catch(Exception e){}

这篇关于如何访问它们的try-catch里面的变量？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！