2.2のぐるぐるしない対策

MainActivity.java

public class MainActivity extends Activity {

    ProgressDialog mProgressDialog;

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

        findViewById(R.id.button).setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                mProgressDialog = createProgressDialog("ぐるぐる");
                mProgressDialog.show();

                new Thread(new Runnable() {

                    @Override
                    public void run() {
                        try {
                            Thread.sleep(1000);
                        } catch (InterruptedException e) {
                        }
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                mProgressDialog.dismiss();
                            }
                        });
                    }

                }).start();
            }
        });

    }

    private ProgressDialog createProgressDialog(String message) {
        ProgressDialog progressDialog = new ProgressDialog(this);
        progressDialog.setMessage(message);
        return progressDialog;
    }

}