Java tutorial
/* * <b>Copyright 2014 by Imagination Technologies Limited * and/or its affiliated group companies.</b>\n * All rights reserved. No part of this software, either * material or conceptual may be copied or distributed, * transmitted, transcribed, stored in a retrieval system * or translated into any human or computer language in any * form by any means, electronic, mechanical, manual or * other-wise, or disclosed to the third parties without the * express written permission of Imagination Technologies * Limited, Home Park Estate, Kings Langley, Hertfordshire, * WD4 8LZ, U.K. */ package com.imgtec.hobbyist.fragments.loginsignup; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.content.SharedPreferences; import android.os.Bundle; import android.os.Handler; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; import com.imgtec.flow.client.core.FlowException; import com.imgtec.hobbyist.BuildConfig; import com.imgtec.hobbyist.R; import com.imgtec.hobbyist.activities.ActivitiesAndFragmentsHelper; import com.imgtec.hobbyist.activities.StartApplicationActivity; import com.imgtec.hobbyist.flow.FlowEntities; import com.imgtec.hobbyist.flow.FlowHelper; import com.imgtec.hobbyist.utils.BackgroundExecutor; import com.imgtec.hobbyist.utils.Constants; import com.imgtec.hobbyist.utils.DebugLogger; import com.imgtec.hobbyist.utils.ErrorHtmlLogger; import com.imgtec.hobbyist.utils.ExternalCall; import com.imgtec.hobbyist.utils.Preferences; /** * Fragment which allows changing Flow initialization values (license details, Flow server URL and WiFire board URL). */ public class SettingsFragment extends FragmentWithProgressBar implements BackgroundExecutor.Callbacks<Boolean> { public static final String TAG = "ServerSettingsFragment"; private static final int CHECK_LICENSEE_ID = 1; private EditText rootEdit; private EditText keyEdit; private EditText secretEdit; private EditText wifireEdit; private TextView buildNumber; private Button saveButton; private Context appContext; private Handler handler = new Handler(); private FlowHelper flowHelper; public static Fragment newInstance() { return new SettingsFragment(); } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); flowHelper = FlowHelper.getInstance(getActivity()); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment_settings, container, false); rootEdit = (EditText) view.findViewById(R.id.rootEdit); rootEdit.setOnFocusChangeListener(new Trimmer()); keyEdit = (EditText) view.findViewById(R.id.keyEdit); keyEdit.setOnFocusChangeListener(new Trimmer()); secretEdit = (EditText) view.findViewById(R.id.secretEdit); secretEdit.setOnFocusChangeListener(new Trimmer()); wifireEdit = (EditText) view.findViewById(R.id.wifireEdit); wifireEdit.setOnFocusChangeListener(new Trimmer()); buildNumber = (TextView) view.findViewById(R.id.buildNumber); saveButton = (Button) view.findViewById(R.id.save); return view; } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); buildNumber.setText(BuildConfig.VERSION_NAME); SharedPreferences sharedPreferences = appContext.getSharedPreferences(Preferences.SETTINGS, Context.MODE_PRIVATE); rootEdit.setText(sharedPreferences.getString(Preferences.ROOT_URL, Preferences.ROOT_URL_DEFAULT_VALUE)); keyEdit.setText(sharedPreferences.getString(Preferences.OAUTH_KEY, Preferences.OAUTH_KEY_DEFAULT_VALUE)); secretEdit.setText( sharedPreferences.getString(Preferences.OAUTH_SECRET, Preferences.OAUTH_SECRET_DEFAULT_VALUE)); wifireEdit.setText(sharedPreferences.getString(Preferences.WIFIRE_URL, Constants.WIFIRE_BOARD_REQUESTS_MODE ? Preferences.WIFIRE_URL_BOARD_WEBSERVICE_URL : Preferences.WIFIRE_URL_APIARY_WEBSERVICE_URL)); saveButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (validate()) { saveSettingsAndReinitializeApp(); } } }); buildNumber.setOnClickListener(new View.OnClickListener() { int tapCounter = 0; @Override public void onClick(View v) { ++tapCounter; if (tapCounter > 4) { rootEdit.setVisibility(View.VISIBLE); wifireEdit.setVisibility(View.VISIBLE); } } }); } private void saveSettingsAndReinitializeApp() { Preferences.saveSettings(appContext, rootEdit.getText().toString(), keyEdit.getText().toString(), secretEdit.getText().toString(), wifireEdit.getText().toString()); showProgress(appContext.getString(R.string.reinitialization)); BackgroundExecutor.submit(new ExternalCall<Boolean>() { @Override public Boolean submit() { flowHelper.shutdown(); flowHelper.initFlowIfNotInitialized(getActivity()); flowHelper.readUrlsForLicensee(); return FlowHelper.isLicenseCorrect(); } }, this, CHECK_LICENSEE_ID, appContext); } private boolean validate() { if (!singleValidation(rootEdit, Constants.DEFAULT_MAXIMUM_FLOW_REST_URL_CHARACTERS_COUNT)) { return false; } if (!keyValidation(keyEdit, Constants.DEFAULT_KEY_CHARACTERS_COUNT)) { return false; } if (!keyValidation(secretEdit, Constants.DEFAULT_KEY_CHARACTERS_COUNT)) { return false; } if (!singleValidation(wifireEdit, Constants.DEFAULT_MAXIMUM_FIELD_CHARACTERS_COUNT)) { return false; } return true; } private boolean singleValidation(EditText editText, int charCount) { if (editText.getText().toString().length() > charCount) { editText.setError(appContext.getString(R.string.incorrect_field_character_count)); return false; } else { editText.setError(null); return true; } } private boolean keyValidation(EditText editText, int charCount) { if (editText.getText().toString().length() != charCount) { editText.setError(appContext.getString(R.string.incorrect_field_character_count)); return false; } else { editText.setError(null); return true; } } @Override public void onAttach(Activity activity) { super.onAttach(activity); appContext = activity.getApplicationContext(); } @Override protected void setActionBarTitleText() { actionBarTitle.setText(appContext.getString(R.string.settings)); } @Override public void onBackgroundExecutionResult(Boolean isLicenceCorrect, int taskCode) { if (isLicenceCorrect != null && isLicenceCorrect && taskCode == CHECK_LICENSEE_ID) { try { hideProgress(); ActivitiesAndFragmentsHelper.startActivityAndFinishPreviousOne(getActivity(), new Intent(getActivity(), StartApplicationActivity.class)); } catch (FlowException e) { DebugLogger.log(getClass().getSimpleName(), e); ActivitiesAndFragmentsHelper.showToast(appContext, ErrorHtmlLogger.log(FlowEntities.getInstance(appContext).getLastError()), handler); getActivity().finish(); } } else { hideProgress(); ActivitiesAndFragmentsHelper.showToast(appContext, R.string.error_invalid_api_key, handler); } } private class Trimmer implements View.OnFocusChangeListener { @Override public void onFocusChange(View v, boolean hasFocus) { if (!hasFocus) { String newText = ((EditText) v).getText().toString().replace(" ", ""); ((EditText) v).setText(newText); } } } }