第一次用Parse就深入淺出

BaaS, backend as a service
BaaS is a model for providing web and mobile app developers
with a way to link their applications to backend cloud storage
and APIs exposed by back end applications while also
providing features such as user management, push
notiﬁcations, and integration with social networking services.
by wikipedia

Why parse.com
• clearly document
• simply operate
• synchronization automatic
• push notiﬁcation server
• local data store
• open source
• Scale

第一次用Parse就深入淺出

• Download & unzip the SDK
• Add dependencies 
dependencies { 
compile 'com.parse.bolts:bolts-android:1.+' 
compile ﬁleTree(dir: 'libs', include: 'Parse-*.jar')} 
• manifest 
<uses-permission android:name="android.permission.INTERNET" /> 
<uses-permission
android:name="android.permission.ACCESS_NETWORK_STATE" />
• Application#onCreate() 
// Enable Local Datastore. 
Parse.enableLocalDatastore(this); 
Parse.initialize(this, "key", "key");
Quick Start

Basic Operate
• Saving Objects
• Retrieving Objects and Query data
• Updating Objects
• Arrays
• Deleting Objects

• ParseObject contains key-value pairs of JSON-compatible
data. This data is schemaless, which means that you don't
need to specify ahead of time what keys exist on each
ParseObject. You simply set whatever key-value pairs you
want, and our backend will store it.
ParseObject

ParseObject parseTest = new ParseObject("test");
parseTest("ClickNumber", “1”);
parseTest("cheatMode", “Anoymorus”);
String objectId = parseTest.getObjectId();
parseTest.saveInBackground();
saveParseObject

Retrieving Objects
ParseQuery<ParseObject> query =
ParseQuery.getQuery("test");
query.getInBackground("xWMyZ4YEGZ", new
GetCallback<ParseObject>() {
public void done(ParseObject object, ParseException e) {
if (e == null) {
// object will be your game score
} else {
// something went wrong
}
}
});
ObjectID

ParseQuery.getQuery(“test");
query.whereEqualTo(“ClickNumber”,”1”);
if (e == null) {
} else {
}
}
}); Query Objects

ParseQuery.getQuery("test");
if (e == null) {
object.put(“CkickNumber”,”2”);
object.saveInBackground();
} else {
}
}
});
Updating Objects

JSONObject userProfile = new JSONObject();
 
ParseObject Androidhacker = new ParseObject("test"); 
Androidhacker.put("profile", userProfile);
Androidhacker.saveInBackground();
JSONObject
Array type

• To delete an object from the Parse Cloud 
myObject.deleteInBackground();
• delete a single field from an object 
// After this, the playerName field will be empty 
myObject.remove("playerName"); 
// Saves the field deletion to the Parse Cloud 
myObject.saveInBackground(); 
Delete Object

Member
• Sign up / Sign in
• Current User
• ParseFile(Image, File …etc)
• Anonymous Users
• Facebook Users

ParseUser.logInInBackground("RickisRich", "password", new
LogInCallback() {
public void done(ParseUser user, ParseException e) {
if (user != null) {
// Hooray! The user is logged in.
user.setUsername(“RickisGOD”)
user.saveInBackground();
} else {
// Signup failed. Look at the ParseException to see what
happened.
}
}
});
Sign in

ParseUser user = new ParseUser();
user.setUsername("my name");
user.setPassword("my pass");
user.setEmail("email@example.com");
// other ﬁelds can be set just like with ParseObject
user.put("phone", "650-253-0000");
user.signUpInBackground(new SignUpCallback() {
public void done(ParseException e) {
if (e == null) {
// Hooray! Let them use the app now.
} else {
// Sign up didn't succeed. Look at the ParseException
// to ﬁgure out what went wrong
}
}
});
Sign up

ParseUser.getCurrentUser().setUsername(“RickisGod”);
ParseUser.getCurrentUser().saveInBackground();
ParseUser
ParseUser can be get or set in anywhere of the project, but
when you set anything, remember to saveInBackground, or
it will not be save.
ParseUser.getCurrentUser().getObjectId(); 
ParseUser.getCurrentUser().getEmail();

ParseFile FacebookProﬁlePicture = new
ParseFile("image.png", facebookByte.toByteArray());
 
ParseUser.getCurrentUser().put("image",
FacebookProﬁlePicture); 
ParseUser.getCurrentUser().saveInBackground();
ParseFile
Getting started with ParseFile is easy. First, you'll need to
have the data in byte[] form and then create a ParseFile
with it. In this example, we'll just use a string:

ParseAnonymousUtils.logIn(new LogInCallback() {
@Override
public void done(ParseUser user, ParseException e) {
if (e != null) {
Log.d("MyApp", "Anonymous login failed.");
} else {
Log.d("MyApp", "Anonymous user logged in.");
}
}
});
An anonymous user is a user that can be created without a
username and password but still has all of the same
capabilities as any other ParseUser. After logging out, an
anonymous user is abandoned, and its data is no longer
accessible. No matter have Internet connection or not,
ParseAnonymous will never be null value.
ParseAnonymous

• Add ParseFacebookUtilsV4.jar to your project
• Application#onCreate() 
ParseFacebookUtils.initialize(context);
• OnActivityResult 
@Override 
protected void onActivityResult(int requestCode, int
resultCode, Intent data) { 
super.onActivityResult(requestCode, resultCode, data); 
ParseFacebookUtils.onActivityResult(requestCode,
resultCode, data);
Parse Facebook

ParseFacebookUtils.logInWithReadPermissionsInBackground(
this, permissions, new LogInCallback() {
@Override
public void done(ParseUser user, ParseException err) {
if (user == null) {
Log.d("MyApp", "Uh oh. The user cancelled the Facebook
login.");
} else if (user.isNew()) {
makeOpenGraphRequest();
Log.d("MyApp", "User signed up and logged in through
Facebook!");
} else {
makeOpenGraphRequest();
Log.d("MyApp", "User logged in through Facebook!");
}
}
}); Parse Facebook

• Application#onCreate()  
Parse.enableLocalDatastore();
• Parse Query 
ParseQuery.getQuery(“test");
query.whereEqualTo(“ClickNumber”,”1”);
if (e == null) {
…
});
Local Data store

• saveInBackground() => saveEventually()
Online and ofﬂine

Write good queries, the Golden Rule:
Minimize search space

F8 2015 - Running at Scale on Parse
https://www.youtube.com/watch?v=3wFQiQXQbto

第一次用Parse就深入淺出

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