org.kepennar.android.client.social.twitter.TwitterTweetActivity.java Source code

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Here is the source code for org.kepennar.android.client.social.twitter.TwitterTweetActivity.java

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/*
 * Copyright 2011 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.kepennar.android.client.social.twitter;

import org.kepennar.android.client.AbstractAsyncActivity;
import org.kepennar.android.client.R;
import org.springframework.social.twitter.api.TwitterApi;

import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

/**
 * @author Roy Clarkson
 */
public class TwitterTweetActivity extends AbstractAsyncActivity {
    protected static final String TAG = TwitterTweetActivity.class.getSimpleName();

    private TwitterApi _twitterApi;

    //***************************************
    // Activity methods
    //***************************************
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.twitter_tweet_activity_layout);

        _twitterApi = getApplicationContext().getConnectionRepository().findPrimaryConnectionToApi(TwitterApi.class)
                .getApi();

        // Initiate the POST request when the button is clicked
        final Button button = (Button) findViewById(R.id.button_tweet);
        button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                // hide the soft keypad
                InputMethodManager inputMethodManager = (InputMethodManager) getSystemService(
                        Context.INPUT_METHOD_SERVICE);
                EditText editText = (EditText) findViewById(R.id.edit_text_tweet);
                inputMethodManager.hideSoftInputFromWindow(editText.getWindowToken(), 0);

                // start asynchronous twitter post 
                new PostTweetTask().execute();
            }
        });
    }

    //***************************************
    // Private methods
    //***************************************
    private void showResult(String result) {
        Toast.makeText(this, result, Toast.LENGTH_LONG).show();
    }

    //***************************************
    // Private classes
    //***************************************
    private class PostTweetTask extends AsyncTask<Void, Void, String> {
        private String _tweetText;

        @Override
        protected void onPreExecute() {
            // before the network request begins, show a progress indicator
            showProgressDialog("Updating Status...");

            // retrieve the tweet text from the EditText field
            EditText editText = (EditText) findViewById(R.id.edit_text_tweet);
            _tweetText = editText.getText().toString();
        }

        @Override
        protected String doInBackground(Void... params) {
            try {
                _twitterApi.timelineOperations().updateStatus(_tweetText);
                return "Status updated";
            } catch (Exception e) {
                Log.e(TAG, e.getLocalizedMessage(), e);
                return "An error occurred. See the log for details";
            }
        }

        @Override
        protected void onPostExecute(String result) {
            // after the network request completes, hide the progress indicator
            dismissProgressDialog();

            showResult(result);
        }
    }
}