CODEWITHSUNDEEP
androidandroid-activityandroid-context
Karthik
Karthik

Reputation: 5040

Android can not cast Context to Activity

I have a class which extends Activity.

      public class MyActivity extends Activity{

            @Override
            protected void onCreate(Bundle savedInstanceState) {
                  super.onCreate(savedInstanceState);
                  setContentView(R.id,someactivitylayout);
                  new  Game(getApplicationContext());

       }

My Game class looks like

         public class Game{
             Game(final Context context){
                 cell.setOnClickListener(new View.OnClickListener() {
                       @Override
                       public void onClick(View v) {

                       /* here i need to call runOnUIThread*/
                      }
              } 
         }

My code does not have any syntax errors, so it compiles fine.

In the place where i have to call runOnUIThread, i have tried

              Thread t = new Thread() {
                        public void run() {
                        while (progressBar.getProgress() < 100) {
                               ((Activity) context).runOnUiThread(new unnable() {
                                                public void run() {

                                                }
                                            });
                                      }
                                };
                                t.start();

But when i try to cast context to Activity it gives an exception

    java.lang.ClassCastException: android.app.Application cannot be cast to android.app.Activity

Why is it not possible to cast context to Activity??

I have tried many ways but did not find anyway to get Activity in my Game class.

Is there any way to do that??

Upvotes: 0

Views: 12279

Answers (2)

Matias Elorriaga
Matias Elorriaga

Reputation: 9150

try with

public class MyActivity extends Activity{
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.id,someactivitylayout);
        new Game(this);
    }
}

Upvotes: 1

Bharath Mg
Bharath Mg

Reputation: 1127

You are sending ApplicationContext to the Game class. Just replace the getApplicationContext() with this to pass the Activity Context. It will work.

It should be new Game(this)

Upvotes: 3

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