Java tutorial
/* * Copyright 2012 Google Inc. * * 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 com.google.android.apps.iosched.ui; import com.google.analytics.tracking.android.EasyTracker; import com.google.android.apps.iosched.R; import com.google.android.apps.iosched.provider.ScheduleContract; import com.google.android.apps.iosched.provider.ScheduleContract.Feedback; import com.google.android.apps.iosched.util.AccountUtils; import com.google.android.gms.common.ConnectionResult; import com.google.android.gms.common.GooglePlayServicesClient; import com.google.android.gms.plus.PlusClient; import android.content.ContentValues; import android.content.Intent; import android.database.Cursor; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.LoaderManager; import android.support.v4.content.CursorLoader; import android.support.v4.content.Loader; import android.view.*; import android.widget.EditText; import android.widget.RadioGroup; import android.widget.SeekBar; import android.widget.TextView; import java.util.ArrayList; import java.util.List; import static com.google.android.apps.iosched.util.LogUtils.LOGD; import static com.google.android.apps.iosched.util.LogUtils.makeLogTag; /** * A fragment that lets the user submit feedback about a given session. */ public class SessionFeedbackFragment extends Fragment implements LoaderManager.LoaderCallbacks<Cursor>, GooglePlayServicesClient.ConnectionCallbacks, GooglePlayServicesClient.OnConnectionFailedListener { private static final String TAG = makeLogTag(SessionDetailFragment.class); // Set this boolean extra to true to show a variable height header public static final String EXTRA_VARIABLE_HEIGHT_HEADER = "com.google.android.iosched.extra.VARIABLE_HEIGHT_HEADER"; private String mSessionId; private Uri mSessionUri; private String mTitleString; private TextView mTitle; private PlusClient mPlusClient; private boolean mVariableHeightHeader = false; private RatingBarHelper mSessionRatingFeedbackBar; private RatingBarHelper mQ1FeedbackBar; private RatingBarHelper mQ2FeedbackBar; private RatingBarHelper mQ3FeedbackBar; private RadioGroup mQ4RadioGroup; private EditText mComments; public SessionFeedbackFragment() { } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); final String chosenAccountName = AccountUtils.getChosenAccountName(getActivity()); mPlusClient = new PlusClient.Builder(getActivity(), this, this).clearScopes() .setAccountName(chosenAccountName).build(); final Intent intent = BaseActivity.fragmentArgumentsToIntent(getArguments()); mSessionUri = intent.getData(); if (mSessionUri == null) { return; } mSessionId = ScheduleContract.Sessions.getSessionId(mSessionUri); mVariableHeightHeader = intent.getBooleanExtra(EXTRA_VARIABLE_HEIGHT_HEADER, false); LoaderManager manager = getLoaderManager(); manager.restartLoader(0, null, this); setHasOptionsMenu(true); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_session_feedback, null); mTitle = (TextView) rootView.findViewById(R.id.session_title); mSessionRatingFeedbackBar = RatingBarHelper.create(rootView.findViewById(R.id.session_rating_container)); mQ1FeedbackBar = RatingBarHelper.create(rootView.findViewById(R.id.session_feedback_q1_container)); mQ2FeedbackBar = RatingBarHelper.create(rootView.findViewById(R.id.session_feedback_q2_container)); mQ3FeedbackBar = RatingBarHelper.create(rootView.findViewById(R.id.session_feedback_q3_container)); mQ4RadioGroup = (RadioGroup) rootView.findViewById(R.id.session_feedback_q4); mComments = (EditText) rootView.findViewById(R.id.session_feedback_comments); if (mVariableHeightHeader) { View headerView = rootView.findViewById(R.id.header_session); ViewGroup.LayoutParams layoutParams = headerView.getLayoutParams(); layoutParams.height = ViewGroup.LayoutParams.WRAP_CONTENT; headerView.setLayoutParams(layoutParams); } rootView.findViewById(R.id.submit_feedback_button).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { submitAllFeedback(); EasyTracker.getTracker().sendEvent("Session", "Feedback", mTitleString, 0L); LOGD("Tracker", "Feedback: " + mTitleString); getActivity().finish(); } }); return rootView; } @Override public void onStart() { super.onStart(); mPlusClient.connect(); } @Override public void onStop() { super.onStop(); mPlusClient.disconnect(); } @Override public void onConnected(Bundle connectionHint) { } @Override public void onDisconnected() { } @Override public void onConnectionFailed(ConnectionResult connectionResult) { // Don't show an error just for the +1 button. Google Play services errors // should be caught at a higher level in the app } /** * Handle {@link SessionsQuery} {@link Cursor}. */ private void onSessionQueryComplete(Cursor cursor) { if (!cursor.moveToFirst()) { return; } mTitleString = cursor.getString(SessionsQuery.TITLE); // Format time block this session occupies mTitle.setText(mTitleString); EasyTracker.getTracker().sendView("Feedback: " + mTitleString); LOGD("Tracker", "Feedback: " + mTitleString); } /* ALL THE FEEDBACKS */ void submitAllFeedback() { int rating = mSessionRatingFeedbackBar.getValue() + 1; int q1Answer = mQ1FeedbackBar.getValue() + 1; int q2Answer = mQ2FeedbackBar.getValue() + 1; int q3Answer = mQ3FeedbackBar.getValue() + 1; // Don't add +1, since this is effectively a boolean. index 0 = false, 1 = true, // -1 means no answer was given. int q4Answer = getCheckedRadioIndex(mQ4RadioGroup); String comments = mComments.getText().toString(); String answers = mSessionId + ", " + rating + ", " + q1Answer + ", " + q2Answer + ", " + q3Answer + ", " + q4Answer + ", " + comments; LOGD(TAG, answers); ContentValues values = new ContentValues(); values.put(Feedback.SESSION_ID, mSessionId); values.put(Feedback.UPDATED, System.currentTimeMillis()); values.put(Feedback.SESSION_RATING, rating); values.put(Feedback.ANSWER_RELEVANCE, q1Answer); values.put(Feedback.ANSWER_CONTENT, q2Answer); values.put(Feedback.ANSWER_SPEAKER, q3Answer); values.put(Feedback.ANSWER_WILLUSE, q4Answer); values.put(Feedback.COMMENTS, comments); getActivity().getContentResolver().insert(ScheduleContract.Feedback.buildFeedbackUri(mSessionId), values); } int getCheckedRadioIndex(RadioGroup rg) { int radioId = rg.getCheckedRadioButtonId(); View rb = rg.findViewById(radioId); return rg.indexOfChild(rb); } @Override public Loader<Cursor> onCreateLoader(int id, Bundle data) { return new CursorLoader(getActivity(), mSessionUri, SessionsQuery.PROJECTION, null, null, null); } @Override public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) { if (!isAdded()) { return; } onSessionQueryComplete(cursor); } @Override public void onLoaderReset(Loader<Cursor> loader) { } /** * Helper class for building a rating bar from a {@link SeekBar}. */ private static class RatingBarHelper implements SeekBar.OnSeekBarChangeListener { private SeekBar mBar; private boolean mTrackingTouch; private TextView[] mLabels; public static RatingBarHelper create(View container) { return new RatingBarHelper(container); } private RatingBarHelper(View container) { // Force the seekbar to multiples of 100 mBar = (SeekBar) container.findViewById(R.id.rating_bar); mLabels = new TextView[] { (TextView) container.findViewById(R.id.rating_bar_label_1), (TextView) container.findViewById(R.id.rating_bar_label_2), (TextView) container.findViewById(R.id.rating_bar_label_3), (TextView) container.findViewById(R.id.rating_bar_label_4), (TextView) container.findViewById(R.id.rating_bar_label_5), }; mBar.setMax(400); mBar.setProgress(200); onProgressChanged(mBar, 200, false); mBar.setOnSeekBarChangeListener(this); } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { int value = Math.round(progress / 100f); if (fromUser) { seekBar.setProgress(value * 100); } if (!mTrackingTouch) { for (int i = 0; i < mLabels.length; i++) { mLabels[i].setSelected(i == value); } } } @Override public void onStartTrackingTouch(SeekBar seekBar) { mTrackingTouch = true; for (TextView mLabel : mLabels) { mLabel.setSelected(false); } } @Override public void onStopTrackingTouch(SeekBar seekBar) { int value = getValue(); mTrackingTouch = false; for (int i = 0; i < mLabels.length; i++) { mLabels[i].setSelected(i == value); } } public int getValue() { return mBar.getProgress() / 100; } } /** * {@link com.google.android.apps.iosched.provider.ScheduleContract.Sessions} query parameters. */ private interface SessionsQuery { String[] PROJECTION = { ScheduleContract.Sessions.SESSION_TITLE, }; int TITLE = 0; } }