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https://github.com/awslabs/aws-mobile-appsync-sdk-android
Android SDK for AWS AppSync.
https://github.com/awslabs/aws-mobile-appsync-sdk-android
android android-client appsync appsync-sdk aws aws-appsync aws-mobile codegen gradle graphql graphql-android graphql-client java
Last synced: 3 months ago
JSON representation
Android SDK for AWS AppSync.
- Host: GitHub
- URL: https://github.com/awslabs/aws-mobile-appsync-sdk-android
- Owner: awslabs
- License: apache-2.0
- Created: 2018-01-30T19:26:20.000Z (over 6 years ago)
- Default Branch: main
- Last Pushed: 2023-12-08T20:39:57.000Z (5 months ago)
- Last Synced: 2024-01-14T08:06:38.034Z (4 months ago)
- Topics: android, android-client, appsync, appsync-sdk, aws, aws-appsync, aws-mobile, codegen, gradle, graphql, graphql-android, graphql-client, java
- Language: Java
- Homepage: https://docs.amplify.aws/sdk/api/graphql/q/platform/android/
- Size: 1.37 MB
- Stars: 102
- Watchers: 41
- Forks: 67
- Open Issues: 65
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- Contributing: CONTRIBUTING.md
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Codeowners: .github/CODEOWNERS
Lists
- awesome-aws-appsync - AWS AppSync Android SDK
README
## Recommendation: Use [Amplify](https://aws-amplify.github.io/) clients to connect to AppSync
For front-end web and mobile development, we recommend using the [Amplify](https://aws-amplify.github.io/) clients which are optimized to connect to the AppSync backend.
- For DynamoDB data sources, use the [DataStore](https://docs.amplify.aws/lib/datastore/getting-started/q/platform/android/) category in the Amplify client. It provides the best developer experience and built-in conflict detection and resolution.
- For non-DynamoDB data sources in scenarios where you have no offline requirements, use the [API (GraphQL)](https://docs.amplify.aws/lib/graphqlapi/getting-started/q/platform/android/) category in the Amplify client.
## AWS AppSync SDK for Android
[](https://github.com/awslabs/aws-mobile-appsync-sdk-android/releases)
[]()
[](https://app.travis-ci.com/awslabs/aws-mobile-appsync-sdk-android)
The AWS AppSync SDK for Android enables you to access your AWS AppSync backend and perform operations like queries, mutations, and subscription. The SDK also includes support for offline operations. This SDK is derrived from the Apollo project found [here](https://github.com/apollographql/apollo-android). Please log questions for this client SDK in this repo and questions for the AppSync service in the [official AWS AppSync forum](https://forums.aws.amazon.com/forum.jspa?forumID=280&start=0).
## Platform Support
AWS AppSync SDK for Android supports Android API level 21 (Android 5.0) and above.
## Samples
1. A sample app using the events sample schema can be found here: https://github.com/aws-samples/aws-mobile-appsync-events-starter-android
Step by step documentation can be found here: https://aws-amplify.github.io/docs/android/api
## Setup
### Gradle setup
#### Project's `build.gradle`
In the project's `build.gradle`, add a dependency to the `dependencies` inside the `buildscript` block:
```groovy
classpath 'com.amazonaws:aws-android-sdk-appsync-gradle-plugin:3.4.1'
```
Also, add the maven plugins repository to your `repositories`.
Do this for the `repositories` block under `buildscript`:
```groovy
buildscript {
repositories {
// Add this maven block.
maven {
url "https://plugins.gradle.org/m2/"
}
google()
mavenCentral()
}
}
```
And also under `allprojects`, too:
```groovy
allprojects {
repositories {
// Add this maven block.
maven {
url "https://plugins.gradle.org/m2/"
}
google()
mavenCentral()
}
}
```
**Sample project's `build.gradle`**
```groovy
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
maven {
url "https://plugins.gradle.org/m2/"
}
google()
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.5.3'
classpath 'com.amazonaws:aws-android-sdk-appsync-gradle-plugin:3.4.1'
}
}
allprojects {
repositories {
maven {
url "https://plugins.gradle.org/m2/"
}
google()
mavenCentral()
}
}
... other stuff ...
```
#### App's `build.gradle`
In the app's `build.gradle`, add the following plugin:
```groovy
apply plugin: 'com.amazonaws.appsync'
```
Add the following dependency:
```groovy
implementation 'com.amazonaws:aws-android-sdk-appsync:3.4.1'
```
**Sample app's `build.gradle`**
```groovy
apply plugin: 'com.android.application'
apply plugin: 'com.amazonaws.appsync'
android {
// Typical items
}
dependencies {
// Typical dependencies
implementation 'com.amazonaws:aws-android-sdk-appsync:3.4.1'
}
```
### App's `AndroidManifest.xml`
To determine if the device is offline, add permissions to access the network state:
```xml
```
## Code generation
To interact with AppSync, your client needs to define GraphQL queries and mutations.
For example, create a file named `./app/src/main/graphql/com/amazonaws/demo/posts/posts.graphql`:
```graphql
query GetPost($id:ID!) {
getPost(id:$id) {
id
title
author
content
url
version
}
}
mutation AddPost($id: ID!, $author: String!, $title: String, $content: String, $url: String, $ups: Int!, $downs: Int!, $expectedVersion: Int!) {
putPost(id: $id, author: $author, title: $title, content: $content, url: $url, ups: $ups, downs: $downs, version: $expectedVersion) {
id
title
author
url
content
}
}
```
Next, fetch the `schema.json` file from the AppSync console and place it alongside the `posts.graphql` file:
```console
./app/src/main/graphql/com/amazonaws/demo/posts/schema.json
```
Now build the project and the generated source files will be available to
use within the app. They will not show up in your source directory, but
are added in the build path.
## Create a client
### Configuration via code
```java
AWSAppSyncClient client = AWSAppSyncClient.builder()
.context(context)
.apiKey(new BasicAPIKeyAuthProvider(Constants.APPSYNC_API_KEY)) // API Key based authorization
.region(Constants.APPSYNC_REGION)
.serverUrl(Constants.APPSYNC_API_URL)
.build();
```
### Configuration via a config file
Alternatively, you can use the `awsconfiguration.json` file to supply the configuration information required to create a `AWSAppSyncClient` object.
Create a file named `awsconfiguration.json` under your app's `res/raw` directory.
```json
{
"AppSync": {
"Default": {
"ApiUrl": "YOUR-GRAPHQL-ENDPOINT",
"Region": "us-east-1",
"ApiKey": "YOUR-API-KEY",
"AuthMode": "API_KEY"
}
}
}
```
The `AWSConfiguration` represents the configuration information present in `awsconfiguration.json` file. By default, the information under `Default` section will be used.
```java
AWSAppSyncClient client = AWSAppSyncClient.builder()
.context(context)
.awsConfiguration(new AWSConfiguration(context))
.build();
```
You can override the `Default` configuration by using the `AWSConfiguration#setConfiguration()` method.
```json
{
"AppSync": {
"Default": {
"ApiUrl": "YOUR-GRAPHQL-ENDPOINT",
"Region": "us-east-1",
"ApiKey": "YOUR-API-KEY",
"AuthMode": "API_KEY"
},
"Custom": {
"ApiUrl": "YOUR-GRAPHQL-ENDPOINT",
"Region": "us-east-2",
"ApiKey": "YOUR-API-KEY",
"AuthMode": "API_KEY"
}
}
}
```
```java
AWSConfiguration awsConfig = new AWSConfiguration(context);
awsConfig.setConfiguration("Custom");
AWSAppSyncClient client = AWSAppSyncClient.builder()
.context(context)
.awsConfiguration(awsConfig)
.build();
```
## Authentication Modes
When making calls to AWS AppSync, there are several ways to authenticate those calls. API key authorization (**API_KEY**) is the simplest way to onboard. After onboarding, we recommend you use one of the other modes:
1. Amazon IAM (**AWS_IAM**)
2. Amazon Cognito UserPools (**AMAZON\_COGNITO\_USER_POOLS**)
3. Any OpenID Connect Provider (**OPENID_CONNECT**)
### API Key
For authorization using the API key, update the `awsconfiguration.json` file and code snippet as follows:
#### Configuration
Add the following snippet to your `awsconfiguration.json` file.
```json
{
"AppSync": {
"Default": {
"ApiUrl": "YOUR-GRAPHQL-ENDPOINT",
"Region": "us-east-1",
"ApiKey": "YOUR-API-KEY",
"AuthMode": "API_KEY"
}
}
}
```
#### Code
In order to use the information in the `Default` section from `awsconfiguration.json` file, add the following code:
```java
AWSAppSyncClient client = AWSAppSyncClient.builder()
.context(context)
.awsConfiguration(new AWSConfiguration(context))
.build();
```
### AWS IAM
For authorization using Amazon IAM credentials, using Amazon IAM or Amazon STS or Amazon Cognito, update the `awsconfiguration.json` file and code snippet as follows:
#### Configuration
Add the following snippet to your `awsconfiguration.json` file.
```json
{
"CredentialsProvider": {
"CognitoIdentity": {
"Default": {
"PoolId": "YOUR-COGNITO-IDENTITY-POOLID",
"Region": "us-east-1"
}
}
},
"AppSync": {
"Default": {
"ApiUrl": "YOUR-GRAPHQL-ENDPOINT",
"Region": "us-east-1",
"AuthMode": "AWS_IAM"
}
}
}
```
#### Code
Add the following code to use the information in the `Default` section from `awsconfiguration.json` file.
```java
AWSConfiguration awsConfig = new AWSConfiguration(context);
CognitoCachingCredentialsProvider credentialsProvider =
new CognitoCachingCredentialsProvider(context, awsConfig);
AWSAppSyncClient client = AWSAppSyncClient.builder()
.context(context)
.awsConfiguration(awsConfig)
.credentialsProvider(credentialsProvider)
.build();
```
### Amazon Cognito UserPools
For authorization using the Amazon Cognito UserPools, update the `awsconfiguration.json` file and code snippet as follows:
#### Configuration
Add the following snippet to your `awsconfiguration.json` file.
```
{
"CognitoUserPool": {
"Default": {
"PoolId": "POOL-ID",
"AppClientId": "APP-CLIENT-ID",
"AppClientSecret": "APP-CLIENT-SECRET",
"Region": "us-east-1"
}
},
"AppSync": {
"Default": {
"ApiUrl": "YOUR-GRAPHQL-ENDPOINT",
"Region": "us-east-1",
"AuthMode": "AMAZON_COGNITO_USER_POOLS"
}
}
}
```
#### Code
Add the following dependency to your app in order to use Amazon Cognito UserPools:
```groovy
dependencies {
implementation 'com.amazonaws:aws-android-sdk-cognitoidentityprovider:2.16.12'
}
```
Add the following code to use the information in the `Default` section from `awsconfiguration.json` file.
```java
AWSConfiguration awsConfig = new AWSConfiguration(context);
CognitoUserPool cognitoUserPool = new CognitoUserPool(context, awsConfig);
BasicCognitoUserPoolsAuthProvider basicCognitoUserPoolsAuthProvider =
new BasicCognitoUserPoolsAuthProvider(cognitoUserPool);
AWSAppSyncClient awsAppSyncClient = AWSAppSyncClient.builder()
.context(context)
.awsConfiguration(awsConfig)
.cognitoUserPoolsAuthProvider(basicCognitoUserPoolsAuthProvider)
.build();
```
### OIDC (OpenID Connect)
For authorization using any OIDC (OpenID Connect) Identity Provider, update the `awsconfiguration.json` file and code snippet as follows:
#### Configuration
Add the following snippet to your `awsconfiguration.json` file.
```
{
"AppSync": {
"Default": {
"ApiUrl": "YOUR-GRAPHQL-ENDPOINT",
"Region": "us-east-1",
"AuthMode": "OPENID_CONNECT"
}
}
}
```
#### Code
Add the following code to use the information in the `Default` section from `awsconfiguration.json` file.
```java
AWSAppSyncClient client = AWSAppSyncClient.builder()
.context(context)
.awsConfiguration(new AWSConfiguration(context))
.oidcAuthProvider(() -> "jwt-token-from-oidc-provider")
.build();
```
## Make a call
```java
public void addPost() {
GraphQLCall.Callback postsCallback = new GraphQLCall.Callback<>() {
@Override
public void onResponse(Response response) {
// Called on a non-UI thread
runOnUiThread(() -> { /* do stuff on UI thread */ });
}
@Override
public void onFailure(ApolloException failure) {
// Error handling
}
};
AddPostMutation addPostMutation = AddPostMutation.builder()
.id(UUID.randomUUID().toString())
.title(title)
.author(author)
.url(url)
.content(content)
.ups(0)
.downs(0)
.expectedVersion(1)
.build();
client.mutate(addPostMutation).enqueue(postsCallback);
}
```
## License
This library is licensed under the Apache License 2.0.