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Android

Posted by Harsha Rao
Harsha Rao
288 Points

Problem with Code Challenge: Animating the Crystal Ball

Hi, I'm having a bit of trouble with part 3 of the Code Challenge: Animating the Crystal Ball. The question is copied in quotation marks below, and my code follows. I'm not sure what the error is here? Thanks!

"Continuing with animateFrog(), add an if statement to see if jumpAnimation is currently running, but don't do anything inside the curly braces yet. Remember that the condition to test goes inside parenthesis after the 'if' keyword. Use the 'isRunning()' method of the jumpAnimation variable."

public void animateFrog(){
        ImageView frogImage = (ImageView) findViewById(R.id.frog);
            AnimationDrawable jumpAnimation = (AnimationDrawable) frogImage.getDrawable();
    if(jumpAnimation.isRunning()){

        };

};

3 Answers

Ernest Grzybowski
Ernest Grzybowski
Treehouse Project Reviewer
Ernest Grzybowski
Ernest Grzybowski
Treehouse Project Reviewer

I'm pretty sure your code has a few too many semicolons.

I believe that challenge went something like this:

  public void animateFrog(){
    ImageView frogImage = (ImageView) findViewById(R.id.frog);
    AnimationDrawable jumpAnimation = (AnimationDrawable) frogImage.getDrawable();
    if (jumpAnimation.isRunning()){
    }

  }

That should be all you need. Simply remove the two semicolons you have. Let me know if you need anymore help.

Tre Cameron
Tre Cameron
357 Points

Hey, I tried doing exactly what you did , and i even tried copy and pasting it in, but it still says "Compilation Error! Remember the syntax for an if statement: if (condition) { // code }" , Please help, Im stuck, i dont know what im doing wrong.

Ernest Grzybowski
Ernest Grzybowski
Treehouse Project Reviewer

Can you post your entire code that you're trying? Even if you are "copying and pasting it in". We might be able to spot something simple that is off. =)

Terence Starzl
Terence Starzl
351 Points

I'm having the same problem as them

package com.example;

import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.ImageView; import android.graphics.drawable.AnimationDrawable;

public class MainActivity extends Activity {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

public void animateFrog(){

ImageView frogImage = (ImageView) findViewById(R.id.frog);
AnimationDrawable jumpAnimationn = (AnimationDrawable) frogImage.getDrawable();
 if (jumpAnimation.isRunning()){
}

} }

Ernest Grzybowski
Ernest Grzybowski
Treehouse Project Reviewer

I'm not sure if the spacing you are adding is throwing off the challenge system.

This code works... so hopefully you can compare your code with it.

package com.example;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
import android.graphics.drawable.AnimationDrawable;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

public void animateFrog(){
    ImageView frogImage = (ImageView) findViewById(R.id.frog);
    AnimationDrawable jumpAnimation = (AnimationDrawable) frogImage.getDrawable();
    if (jumpAnimation.isRunning()){
    }

  }
}
Brandon C
Brandon C
3,091 Points
Brandon C
Brandon C
3,091 Points

I'm having trouble as well, I have my code exactly like this:

public void animateFrog() {
ImageView frogImage = (ImageView)          findViewById(R.id.frog);
AnimationDrawable jumpAnimation =  (AnimationDrawable) frogImage.getDrawable();
if (jumpAnimation.isRunning()){
 }
}

Nothing happens, still says: Compilation Error! Remember the syntax for an if statement: if (condition) { // code }

Don't know what the hell I'm doing wrong... I'm stuck.

Dan Giles
Dan Giles
2,243 Points
Dan Giles
Dan Giles
2,243 Points

I was having this problem at first also; it turned out to be missing one closing curly bracket "}"

If you take a look at Ernest's code above, there should be three closing curly brackets:

1- to close the if (jumpAnimation.isRunning()) statement 2- to close the animateFrog method 3- to close the MainActivity class