我要开始从AB的活动，（从LinearLayout中延伸）一个新的活动..但这个code是不正确的。

 意向书I =新意图（SearchResultForm.this，MainActivity.class）;startActivity（ⅰ）; 

......

 公共类SearchResultForm扩展的LinearLayout {... 

和我得到这个错误。

类型SearchResultForm没有外围实例是在范围访问

我该怎么办呢？

只是猜测，因为我看不到你的code的休息，但尝试：

 意向书I =新意图（这一点，MainActivity.class）;startActivity（ⅰ）; 

i want to start a new activity from ab activity that (extends from Linearlayout) .. but this code is not right

Intent i = new Intent(SearchResultForm.this, MainActivity.class);
startActivity(i);

... ...

public class SearchResultForm extends LinearLayout{ ...

and i get this error ..

No enclosing instance of the type SearchResultForm is accessible in scope

how can i do it ?

Just guessing since I can't see the rest of your code, but try:

Intent i = new Intent(this, MainActivity.class);
startActivity(i);