Java tutorial
/* * The MIT License (MIT) * * Copyright (c) 2015 Carlos Andres Jimenez <apps@carlosandresjimenez.co> * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package co.carlosandresjimenez.android.gotit; import android.app.Dialog; import android.app.ProgressDialog; import android.content.DialogInterface; import android.os.Bundle; import android.support.v4.app.DialogFragment; import android.support.v7.app.AlertDialog; import android.util.Log; import android.view.LayoutInflater; import android.view.View; import android.widget.Button; import android.widget.TextView; import java.util.Observable; import java.util.Observer; import co.carlosandresjimenez.android.gotit.beans.Following; import co.carlosandresjimenez.android.gotit.cloud.ApplicationState; import co.carlosandresjimenez.android.gotit.cloud.CloudFactory; import co.carlosandresjimenez.android.gotit.cloud.CloudManager; /** * Created by carlosjimenez on 10/4/15. */ public class FollowFragment extends DialogFragment implements Observer { private static final String LOG_TAG = MainActivity.class.getSimpleName(); TextView mTvEmail; ProgressDialog progressDialog; Listener mListener; CloudManager mCloudManager; String mSessionEmail; public void setListener(Listener l) { mListener = l; } public interface Listener { void onFollowRequested(String userEmail); } @Override public Dialog onCreateDialog(Bundle savedInstanceState) { AlertDialog.Builder builder = new AlertDialog.Builder(getActivity()); // Get the layout inflater LayoutInflater inflater = getActivity().getLayoutInflater(); View dialogView = inflater.inflate(R.layout.dialog_follow, null); mTvEmail = (TextView) dialogView.findViewById(R.id.email); mSessionEmail = Utility.getUserEmail(getActivity()); // Inflate and set the layout for the dialog // Pass null as the parent view because its going in the dialog layout builder.setTitle(R.string.title_dialog_follow).setView(dialogView) // Add action buttons .setPositiveButton(R.string.action_request, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { } }).setNegativeButton(R.string.action_cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { FollowFragment.this.getDialog().cancel(); } }); AlertDialog alertDialog = builder.create(); alertDialog.setCanceledOnTouchOutside(false); alertDialog.show(); Button positiveButton = alertDialog.getButton(DialogInterface.BUTTON_POSITIVE); positiveButton.setOnClickListener(new RequestPermissionListener(alertDialog)); return alertDialog; } private class RequestPermissionListener implements View.OnClickListener { private final Dialog dialog; public RequestPermissionListener(Dialog dialog) { this.dialog = dialog; } @Override public void onClick(View v) { // put your code here Log.i(LOG_TAG, "Button id: " + v.getId()); String mValue = mTvEmail.getText().toString(); if (mValue.isEmpty()) { openResultDialog("Invalid email entered"); return; } if (mValue.equals(mSessionEmail)) { openResultDialog("Invalid email entered, you cannot follow yourself."); return; } mListener.onFollowRequested(mTvEmail.getText().toString()); Utility.hideSoftKeyboard(getActivity(), mTvEmail); requestPermission(); openValidatingDialog(); } } public void openValidatingDialog() { progressDialog = ProgressDialog.show(getActivity(), null, "Requesting permission...", true, false); } public void openResultDialog(String message) { AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(getActivity()); alertDialogBuilder.setIcon(android.R.drawable.ic_dialog_alert); alertDialogBuilder.setTitle("Request error"); // set dialog message alertDialogBuilder.setMessage(message).setCancelable(false) .setPositiveButton(R.string.action_edit, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { // if this button is clicked, close current activity dialog.cancel(); } }).setNegativeButton(R.string.action_cancel, new DialogInterface.OnClickListener() { public void onClick(DialogInterface dialog, int id) { // if this button is clicked, just close the dialog box and do nothing dialog.cancel(); FollowFragment.this.getDialog().dismiss(); } }); // create alert dialog AlertDialog alertDialog = alertDialogBuilder.create(); alertDialog.setCanceledOnTouchOutside(false); // show it alertDialog.show(); } public void requestPermission() { mCloudManager = CloudFactory.getManager(getActivity(), new Following(mTvEmail.getText().toString())); mCloudManager.addObserver(this); mCloudManager.save(); } @Override public void update(Observable observable, Object data) { switch ((ApplicationState) data) { case FOLLOWING_SAVED: progressDialog.dismiss(); mCloudManager.deleteObserver(this); this.dismiss(); break; case FOLLOWING_CANNOT_FOLLOW: progressDialog.dismiss(); mCloudManager.deleteObserver(this); openResultDialog("Follow request not saved. User has a Follower profile and cannot be followed."); break; case FOLLOWING_NOT_FOUND: progressDialog.dismiss(); mCloudManager.deleteObserver(this); openResultDialog("Follow request not saved. User not found"); break; case FOLLOWING_NOT_SAVED: progressDialog.dismiss(); mCloudManager.deleteObserver(this); openResultDialog("Follow request not saved"); break; case ACCESS_UNAUTHORIZED: break; case NO_INTERNET: break; default: break; } } }