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    <p><code>MyActivity.this</code> would reference the instance of the "outer" MyActivity class when your code ran in an inner class. -- Does it? If so, why would you need the <code>host</code> variable?</p> <p><em>Update:</em> It only just occured to me that you may be missing the fact that everything you would access via <code>MyActivity.this</code> from within an <em>inner</em> class, you can access via <code>host</code> in your specific setup.</p> <p><em>Update:</em> You seem to have a wrong understanding of the meaning of <code>this</code>. Originally, it stands for <em>this object</em>, i.e. the class in which your code runs.</p> <p>With the additional notation <code>Class.this</code>, Java enables you to access the instance of the outer class of your code, but only from an inner class.</p> <p>In the following example, <code>Class.this</code> works:</p> <pre><code>class A { int a; class B { void process_a_in_A() { A.this.a++; } } // however, this does NOT work b/c // static inner classes do not have references t oouter classes static class C { void process_a_in_A() { // error -- class A.C is detached from its outer class A A.this.a++; } } } </code></pre> <p>Also, in the following example, <code>Class.this</code> does not work. The reason is simply that the system cannot know whether there is an Instance of class A and which one of the possibly many instances of class A you want to refer to.</p> <pre><code>class A { int a; } class B { void process_a_in_A() { // A here is a class name, not an object reference; // so A.this is meaningless in this context A.this.a++; } } </code></pre> <p>Once again, please be aware that you asked a question without providing the necessary information to answer it <em>specifically</em>, so it can only be answered in general and it looks like you have a wrong understanding about inner classes and the <code>Class.this</code> notation.</p>
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    1. COOf course, in my code I'm accessing via _host_. My question comes because I don't understand **why I can't access to `MyActivity` attributes via `MyActivity.this`** . Further, when I type in eclipse "host", it shows me a lot of possibilities, but **this** isn't included. Thanks
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    2. CO@user1205781 Please see my updated answer.
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    3. COWhat you are saying is correct. But you haven't understood my question (certainly I haven't explained well). I have the host object
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