根据传入的字符串跳转Activity
Intent intent = new Intent(context,Class.forName("com.packname.Activity"));
startActivity(intent);
根据传入的字符加载资源
int icon = getResources().getIdentifier(“imageid”, "drawable",
getPackageName());
getIdentifier的函数签名如下：
public int getIdentifier (String name, String defType, String defPackage)