AsyncTask + ProgressDialogFragment (Android)

ProgressDialogFragment.java

public class ProgressDialogFragment extends DialogFragment {

    public final static String TITLE = "title";
    public final static String MESSAGE = "message";
    public final static String MAX = "max";
    public final static String CANCELABLE = "cancelable";

    public static ProgressDialogFragment newInstance() {
        return new ProgressDialogFragment();
    }

    public interface ProgressDialogFragmentListener {
        void onProgressCancelled();
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        // キャンセル設定(DialogFragment)
        boolean cancelable = getArguments().getBoolean(CANCELABLE, false);
        setCancelable(cancelable);

        // ProgressDialog
        String title = getArguments().getString(TITLE);
        String message = getArguments().getString(MESSAGE);
        ProgressDialog dialog = new ProgressDialog(getActivity());
        dialog.setTitle(title);
        dialog.setMessage(message);
        dialog.setIndeterminate(false);

        // 進捗
        //        dialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
        dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
        dialog.setMax(getArguments().getInt(MAX));

        return dialog;
    }

    public void updateProgress(int value) {
        ProgressDialog dialog = (ProgressDialog) getDialog();
        if (dialog != null) {
            dialog.setProgress(value);
        }
    }

    @Override
    public void onCancel(DialogInterface dialog) {
        super.onCancel(dialog);
        if (getProgressDialogFragmentListener() != null) {
            getProgressDialogFragmentListener().onProgressCancelled();
        }
    }

    private ProgressDialogFragmentListener getProgressDialogFragmentListener() {
        if (getActivity() == null) {
            return null;
        }

        if (getActivity() instanceof ProgressDialogFragmentListener) {
            return (ProgressDialogFragmentListener) getActivity();
        }
        return null;
    }
}

TestActivity.java

public class TestActivity extends Activity implements ProgressDialogFragmentListener {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // TestFragment
        FragmentManager fragmentManager = getFragmentManager();
        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
        Fragment fragment = new TestFragment();
        fragmentTransaction.add(android.R.id.content, fragment, "test");
        fragmentTransaction.commit();
    }

    // ProgressDialogFragmentListener
    @Override
    public void onProgressCancelled() {
        Fragment fragment = getFragmentManager().findFragmentByTag("test");
        if (fragment instanceof ProgressDialogFragmentListener) {
            ((ProgressDialogFragmentListener) fragment).onProgressCancelled();
        }
    }
}

TestFragment.java

public class TestFragment extends Fragment implements ProgressDialogFragmentListener {

    public class TestTask extends AsyncTask<String, Integer, Void> {
        @Override
        protected void onPreExecute() {
            showProgress();
        }

        @Override
        protected Void doInBackground(String... params) {
            try {
                Thread.sleep(500);
                updateProgress(30);

                Thread.sleep(500);
                updateProgress(60);

                Thread.sleep(500);
                updateProgress(90);

            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            return null;
        }

        @Override
        protected void onProgressUpdate(Integer... values) {
            updateProgress(values);
        }

        @Override
        protected void onPostExecute(Void unused) {
            Intent intent = new Intent(getActivity(), ScheduleActivity.class);
            startActivity(intent);
            getActivity().finish();

            hideProgress();
        }
    }

    // Progress関係
    private void showProgress() {
        Bundle args = new Bundle();
        args.putString(ProgressDialogFragment.TITLE, "タイトル");
        args.putString(ProgressDialogFragment.MESSAGE, "処理中 ...");
        args.putBoolean(ProgressDialogFragment.CANCELABLE, false);
        args.putInt(ProgressDialogFragment.MAX, 100);
        DialogFragment dialog = ProgressDialogFragment.newInstance();
        dialog.setArguments(args);
        dialog.show(getActivity().getFragmentManager(), FragmentType.PROGRESS.getTag());
    }

    private void updateProgress(Integer... values) {
        ProgressDialogFragment progress = getProgressDialogFragment();
        if (progress == null) {
            return;
        }
        progress.updateProgress(values[0]);
    }

    private void hideProgress() {
        ProgressDialogFragment progress = getProgressDialogFragment();
        if (progress == null) {
            return;
        }
        progress.dismissAllowingStateLoss();
    }

    private ProgressDialogFragment getProgressDialogFragment() {
        Fragment fragment = getFragmentManager().findFragmentByTag(FragmentType.PROGRESS.getTag());
        return (ProgressDialogFragment) fragment;
    }

    // ProgressDialogFragmentListener
    @Override
    public void onProgressCancelled() {
    }
}