Android Open Source - Android-Wizard-Framework Choice

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License

The source code is released under:

MIT License

Java Source Code

package com.hps.wizard.sample.states;
//from  w w  w .  j a  va 2  s .c  om
import android.app.AlertDialog;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.TextView;

import com.hps.wizard.AbstractWizardActivity;
import com.hps.wizard.StateFragment;
import com.hps.wizard.sample.R;

/**
 * This state forces the user to pick between the Muppet Show and Sesame Street. The next state will be {@link AreYouSure}, built according to the choice here.
 * It also demonstrates how to react to a press of the neutral button in {@link #onNeutralButtonClicked()} and {@link #validate()}.
 */
public class Choice extends StateFragment {

  private static final String CHECKED_BUTTON_ID = "checkedId";
  private static final String TAG = "Choice";
  private static final String FIGHT_CLICKED = "fc";
  private static final String IMAGE_VISIBILITY = "iv";
  private static final String DESCRIPTION_VISIBILITY = "dv";
  private RadioGroup choiceGroup;
  private ImageView imageView;
  private boolean fightClicked;
  private TextView descriptiveText;

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View v = inflater.inflate(R.layout.fragment_state_choice, container, false);

    choiceGroup = (RadioGroup) v.findViewById(R.id.choiceGroup);
    imageView = (ImageView) v.findViewById(R.id.imageView);
    descriptiveText = (TextView) v.findViewById(R.id.descriptiveText);

    /**
     * Set up a listener to enable or disable the next button.
     */
    OnCheckedChangeListener thingListener = new OnCheckedChangeListener() {
      @Override
      public void onCheckedChanged(RadioGroup group, int checkedId) {
        if (getWizardActivity() != null) {
          getWizardActivity().enableButton(AbstractWizardActivity.NEXT_BUTTON, group.getCheckedRadioButtonId() != -1, Choice.this);
        }
      }
    };
    choiceGroup.setOnCheckedChangeListener(thingListener);

    /**
     * Restore the state if we're rebuilding the screen after orientation change.
     */
    if (getArguments() != null) {
      int checkedId = getArguments().getInt(CHECKED_BUTTON_ID, -1);
      if (checkedId != -1) {
        choiceGroup.check(checkedId);
      }

      fightClicked = getArguments().getBoolean(FIGHT_CLICKED);
      imageView.setVisibility(getArguments().getInt(IMAGE_VISIBILITY));
      descriptiveText.setVisibility(getArguments().getInt(DESCRIPTION_VISIBILITY));
    }

    return v;
  }

  @Override
  public String getTitle() {
    return "Fight!";
  }

  @Override
  public String getPreviousButtonLabel() {
    return getWizardActivity().getString(R.string.wizard_previous);
  }

  @Override
  public boolean validate() {
    /**
     * Pop an alert dialog and don't let them move forward unless they've clicked the Fight! button.
     */
    if (!fightClicked) {
      AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
      builder.setTitle("Validation Error");
      builder.setMessage("You can't move forward without clicking \"Fight!\"");
      builder.setPositiveButton("Ok", null);
      builder.create().show();
      return false;
    }

    return true;
  }

  @Override
  public boolean canGoForward() {
    /**
     * They can go forward if a choice has been made, but see also {@link validate()}.
     */
    return choiceGroup != null && choiceGroup.getCheckedRadioButtonId() != -1;
  }

  @Override
  public StateDefinition getNextState() {
    Bundle args = new Bundle();
    /**
     * Build an AreYouSure state who yes sends them to their choice and whose no sends them to the other.
     */
    switch (choiceGroup.getCheckedRadioButtonId()) {
    case R.id.sesameStreet:
      args.putString(AreYouSure.ARE_YOU_SURE_TEXT,
          "Even Kermit the Frog left Sesame Street for the Muppet Show. And it was the best choice of his career.");
      args.putSerializable(AreYouSure.YES_STATE, SesameStreet.class);
      args.putSerializable(AreYouSure.NO_STATE, MuppetShow.class);
      break;
    case R.id.muppets:
      args.putString(AreYouSure.ARE_YOU_SURE_TEXT, "Without Sesame Street there would be no Kermit, and thus no Muppet Show.");
      args.putSerializable(AreYouSure.YES_STATE, MuppetShow.class);
      args.putSerializable(AreYouSure.NO_STATE, SesameStreet.class);
      break;
    default:
      break;
    }

    StateDefinition def = new StateDefinition(AreYouSure.class, args);
    return def;
  }

  @Override
  public void onAdded() {
    Log.i(TAG, "onAdded, getArguments = " + getArguments());
    super.onAdded();

    /**
     * always disable the next button when we're first added.
     */
    getWizardActivity().enableButton(AbstractWizardActivity.NEXT_BUTTON, false, Choice.this);
  }

  @Override
  public Bundle getSavedInstanceState() {
    Bundle bundle = new Bundle();
    /**
     * Save the current choice.
     */
    if (choiceGroup != null) {
      bundle.putInt(CHECKED_BUTTON_ID, choiceGroup.getCheckedRadioButtonId());
    }

    /**
     * Save the state of the fight button and the views it toggles.
     */
    bundle.putBoolean(FIGHT_CLICKED, fightClicked);
    bundle.putInt(IMAGE_VISIBILITY, imageView.getVisibility());
    bundle.putInt(DESCRIPTION_VISIBILITY, descriptiveText.getVisibility());
    return bundle;
  }

  @Override
  public String getNeutralButtonLabel() {
    return "Fight!";
  }

  @Override
  public void onNeutralButtonClicked() {
    /**
     * Toggle the image and text when the fight button is clicked.
     */
    if (imageView.getVisibility() == View.GONE) {
      imageView.setVisibility(View.VISIBLE);
      descriptiveText.setVisibility(View.GONE);
    } else {
      imageView.setVisibility(View.GONE);
      descriptiveText.setVisibility(View.VISIBLE);
    }

    /**
     * Also, mark the button as clicked so {@link validate()} will pass.
     */
    fightClicked = true;
  }
}

Java Source Code List

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