当我处于非Activity类的静态方法时，如何启动Activity

Question

public class Myclass{
public static void Mymethod{

//i want to go to an Activity from here

}
}

Answer 1

很容易！

按类型“活动”向静态类添加静态字段。

当你的活动创建时把这个指针放在其他类的静态字段中：

public class MyActivity extends Activity
{
     public void onCreate()
     {
           Myclass.myactivity = this;
     }
}

刚设置：Myclass.myActivity = this; 然后从Myclass.Mymethod

访问它

public class Myclass{
public static Activity myActivity = null;
public static void Mymethod{

//i want to go to an "myActivity" from here

}
}

Answer 2

很简单，您可以将Context对象从Activity类传递到Non Activity类，并使用它启动一个新的Activity。

Intent i=new Intent(contextObj, ClassName.class);
contextObj.startActivity(i);