Android Open Source - mobile2-android User Discussion Activity

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License

The source code is released under:
Apache License
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Java Source Code

package com.ecollege.android;
//from   ww w .j  av  a 2  s . c o m
import android.app.AlertDialog;
import android.content.Intent;
import android.os.Bundle;
import android.text.Html;
import android.text.Spanned;
import android.view.View;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;

import com.ecollege.android.activities.ECollegeListActivity;
import com.ecollege.android.adapter.ResponseAdapter;
import com.ecollege.android.adapter.UberItem;
import com.ecollege.android.util.CacheConfiguration;
import com.ecollege.api.model.ResponseCount;
import com.ecollege.api.model.UserDiscussionResponse;
import com.ecollege.api.model.UserDiscussionTopic;
import com.ecollege.api.services.discussions.FetchDiscussionResponsesForResponse;
import com.ecollege.api.services.discussions.FetchDiscussionResponsesForTopic;
import com.ecollege.api.services.discussions.PostResponseToResponse;
import com.ecollege.api.services.discussions.PostResponseToTopic;

public abstract class UserDiscussionActivity extends ECollegeListActivity {

  private static final int VIEW_RESPONSE_REQUEST = 0;
  
  protected ResponseAdapter responseAdapter;
  protected ResponseCount responseCount;
  protected AlertDialog postDialog;
  protected Button cancelPostButton;
  protected Button postButton;
  protected EditText postResponseText;
  protected EditText postTitleText;
  protected boolean descriptionExpanded;
  protected Spanned styledDescriptionHtml;
  protected Bundle lastSavedInstanceState;
  
  protected View.OnClickListener onDescriptionExpandToggle = new View.OnClickListener() {
    public void onClick(View v) {
      toggleDescription();
    }
  };
  
  protected static class HeaderViewHolder {
    public TextView parentTitleText;
    public ImageView topicIcon;
    public TextView userTopicTitleText;
    public TextView totalResponseCountText;
    public TextView unreadResponseCountText;
    public TextView userResponseCountText;
    public TextView descriptionText;
    public ImageView expandButton;
    public View textFadeView;
    public Button postResponseButton;
  }
  
  protected HeaderViewHolder headerViewHolder;
  
  protected UserDiscussionTopic getUserTopic() {
    return null;
  }
  
  protected UserDiscussionResponse getUserResponse() {
    return null;
  }
  
  protected void setupView() {
    View headerView = getLayoutInflater().inflate(R.layout.discussion_header,null);
    HeaderViewHolder holder = new HeaderViewHolder();
    holder.parentTitleText = (TextView) headerView.findViewById(R.id.parent_title_text);
    holder.topicIcon = (ImageView)headerView.findViewById(R.id.icon);
    holder.userTopicTitleText = (TextView)headerView.findViewById(R.id.title_text);
    holder.totalResponseCountText = (TextView)headerView.findViewById(R.id.total_response_count_text);
    holder.unreadResponseCountText = (TextView)headerView.findViewById(R.id.unread_response_count_text);
    holder.userResponseCountText = (TextView)headerView.findViewById(R.id.user_response_count_text);
    holder.descriptionText = (TextView) headerView.findViewById(R.id.header_description_text);
    holder.expandButton = (ImageView) headerView.findViewById(R.id.expand_toggle_button);
    holder.textFadeView = headerView.findViewById(R.id.text_fade_view);
    holder.expandButton.setOnClickListener(onDescriptionExpandToggle);
    holder.descriptionText.setOnClickListener(onDescriptionExpandToggle);
    holder.postResponseButton = (Button) headerView.findViewById(R.id.post_response_button);      
    holder.postResponseButton.setOnClickListener(new View.OnClickListener() {
      public void onClick(View v) {
        showPostDialog();
      }
    });
    headerViewHolder = holder;
    getListView().addHeaderView(headerView);
    descriptionExpanded = false;
    responseAdapter = new ResponseAdapter(this);
    setListAdapter(responseAdapter);
  }
  
  protected void restorePostIfSaved(Bundle savedInstanceState) {
    if (savedInstanceState != null) {
      boolean wasEditingPost = savedInstanceState.getBoolean("editingPost");
      if (wasEditingPost) {
        showPostDialog();
        String postSubject = savedInstanceState.getString("postSubject");
        String postBody = savedInstanceState.getString("postBody");
        postTitleText.setText(postSubject);
        postResponseText.setText(postBody);
      }
    }
  }
  
  @Override protected void onSaveInstanceState(Bundle outState) {
    if (postDialog != null && postDialog.isShowing()) {
      outState.putBoolean("editingPost", true);
      outState.putString("postSubject", postTitleText.getText().toString());
      outState.putString("postBody", postResponseText.getText().toString());
    }
    super.onSaveInstanceState(outState);
  }

  @Override protected void onPause() {
    super.onPause();
    if (postDialog != null) {
      postDialog.dismiss();
      postDialog = null;
    }
  }

  @Override protected void onListItemClick(ListView l, View v, int position, long id) {
    super.onListItemClick(l, v, position, id);
    
    @SuppressWarnings("unchecked")
    UberItem<UserDiscussionResponse> item = (UberItem<UserDiscussionResponse>)l.getItemAtPosition(position);
    Intent intent = new Intent(this, UserResponseActivity.class);
    intent.putExtra(UserResponseActivity.USER_RESPONSE_EXTRA, item.getDataItem());
    startActivityForResult(intent, VIEW_RESPONSE_REQUEST);
  }

    @Override protected void onActivityResult (int requestCode, int resultCode, Intent data) {
      if (requestCode == VIEW_RESPONSE_REQUEST) {
        fetchResponses(true);
      }
    }

  protected void showPostDialog() {
    if (postDialog == null) {
      View responseView = getLayoutInflater().inflate(R.layout.post_response, null);
      postDialog = new AlertDialog.Builder(UserDiscussionActivity.this)
        .setView(responseView)
        .setTitle(R.string.post_a_response)
        .show();
      postDialog.getWindow().setLayout(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
      cancelPostButton = (Button) responseView.findViewById(R.id.cancel_button);
      postButton = (Button) responseView.findViewById(R.id.post_button);
      postTitleText = (EditText) responseView.findViewById(R.id.post_title_text);
      postResponseText = (EditText) responseView.findViewById(R.id.post_response_text);
      
      String title = getUserTopic() != null ? getUserTopic().getTopic().getTitle() : getUserResponse().getResponse().getTitle();
      postResponseText.setHint(getString(R.string.post_a_response_to_s, Html.fromHtml(title)));
      cancelPostButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
          postDialog.dismiss();
        }
      });
      postButton.setOnClickListener(new View.OnClickListener() {
        public void onClick(View v) {
          onPostResponse();
        }
      });
    } else {
      postDialog.show();
    }
  }

  protected void onPostResponse() {
    String title = postTitleText.getText().toString();
    String response = postResponseText.getText().toString();
    
    if (getUserTopic() != null) {
      buildService(new PostResponseToTopic(getUserTopic().getTopic().getId(), title, response))
        .makeModal()
        .execute();
    } else {
      buildService(new PostResponseToResponse(getUserResponse().getResponse().getId(), title, response))
      .makeModal()
      .execute();
    }
  }
  
  protected void fetchResponses(boolean reload) {
    responseAdapter.beginLoading();
    CacheConfiguration cacheConfiguration = new CacheConfiguration();
    cacheConfiguration.bypassFileCache = reload;
    cacheConfiguration.bypassResultCache = reload;
    
    if (getUserTopic() != null) {
      buildService(new FetchDiscussionResponsesForTopic(getUserTopic()))
      .configureCaching(cacheConfiguration)
      .execute();
    } else {
      buildService(new FetchDiscussionResponsesForResponse(getUserResponse()))
      .configureCaching(cacheConfiguration)
      .execute();
    }
  }

  public void onServiceCallSuccess(FetchDiscussionResponsesForTopic service) {
    responseAdapter.setLastUpdatedAt(service.getCompletedAt());
    responseAdapter.updateItems(service.getResult());
  }
  
  public void onServiceCallException(FetchDiscussionResponsesForTopic service, Exception ex) {
    responseAdapter.hasError();
  }

  public void onServiceCallSuccess(FetchDiscussionResponsesForResponse service) {
    responseAdapter.setLastUpdatedAt(service.getCompletedAt());
    responseAdapter.updateItems(service.getResult());
  }
  
  public void onServiceCallException(FetchDiscussionResponsesForResponse service, Exception ex) {
    responseAdapter.hasError();
  }
  
  public void onServiceCallSuccess(PostResponseToTopic service) {
    onPostResponseSuccess();
  }
  
  public void onServiceCallSuccess(PostResponseToResponse service) {
    onPostResponseSuccess();
  }
  
  protected void onPostResponseSuccess() {
    postTitleText.setText("");
    postResponseText.setText("");
    postDialog.hide();
    fetchResponses(true);
    // reach in and change the response counts on the topic
    responseCount.setPersonalResponseCount(responseCount.getPersonalResponseCount() + 1);
    responseCount.setTotalResponseCount(responseCount.getTotalResponseCount() + 1);
    responseCount.setLast24HourResponseCount(responseCount.getLast24HourResponseCount() + 1);
  }

  protected void refreshDescriptionView() {
    if (descriptionExpanded) {
      headerViewHolder.descriptionText.setText(styledDescriptionHtml);
      headerViewHolder.descriptionText.setMaxLines(999);
      headerViewHolder.textFadeView.setVisibility(View.GONE);
      headerViewHolder.expandButton.setImageDrawable(getResources().getDrawable(R.drawable.ic_expand_text_upside_down));
    } else {
      headerViewHolder.descriptionText.setText(getUserTopic() != null ? getUserTopic().getTopic().getRawDescription() : getUserResponse().getResponse().getRawDescription());
      headerViewHolder.descriptionText.setMaxLines(4);
      headerViewHolder.textFadeView.setVisibility(View.VISIBLE);
      headerViewHolder.expandButton.setImageDrawable(getResources().getDrawable(R.drawable.ic_expand_text));
    }
  }
  
  protected void toggleDescription() {
    descriptionExpanded = !descriptionExpanded;
    refreshDescriptionView();
  }

}
Java Source Code List
