Android - How to chain multiple asynchronous methods in a readable manner

On app startup I would like to check multiple conditions like so:

onCreate() {
    result1 = method1();
    result2 = method2(result1);
    result3 = method3(result2);
}

Now these methods depend on user input or network requests so they can't be called like that. Instead, I had to have a layout like this:

onCreate() {
    method1();
}
method1() {
    doStuff();
    somekindOfCallbackThatStuffIsDone(result1) {
        method2(result1);
    };
}
method2(result1) {
    doStuff(result1);
    somekindOfCallbackThatStuffIsDone(result1) {
        method3(result2);
    }
}

Now this still looks kind of okay in the example, but it turned out super messy in code, because there are five of these with multiple conditions on each one. Is there a way for the code to be as easily readible as in the first box?