< documentation.
### Basic Usage ###
The DeviceAtlas Cloud Client API can be used as follows:
* Import:
```java
import com.deviceatlas.cloud.deviceidentification.client.Client;
import com.deviceatlas.cloud.deviceidentification.client.Result;
import com.deviceatlas.cloud.deviceidentification.client.Properties;
import com.deviceatlas.cloud.deviceidentification.client.ClientException;
import com.deviceatlas.cloud.deviceidentification.cacheprovider.CacheException;
import com.deviceatlas.cloud.deviceidentification.cacheprovider.CacheProvider;
import com.deviceatlas.cloud.deviceidentification.cacheprovider.FileCacheProvider;
import java.util.HashMap;
import java.util.Map;
```
* Get an instance of the API (singleton), set your DeviceAtlas licence key and
request properties from DeviceAtlas Cloud.
In a servlet container with a HttpServletRequest object:
```java
try {
/* First time usage, the cache provider needs to be set */
Client client = Client.getInstance(new FileCacheProvider());
/* for further use get the API instance (singleton) */
Client client = Client.getInstance();
/* set your licence key */
client.setLicenceKey(LICENCE_KEY);
/* get the device properties - by request object */
Result result = client.getResult(request);
Map<String, String> headers = result.getHeaders();
Properties properties = result.getProperties();
} catch (ClientException ex) {
/* handle the errors */
} catch (CacheException ex) {
/* handle the errors */
}
```
Detecting based on a set of HTTP headers:
```java
Map<String, String> headers = new HashMap<String, String>();
headers.put("user-agent", "THE USER AGENT ...");
/* add more headers .*/
try {
/* get the API instance (singleton) */
Client client = Client.getInstance(new FileCacheProvider());
/* set your licence key */
client.setLicenceKey(LICENCE_KEY);
/* get device properties - by passing HTTP headers */
Result result = client.getResultByHeaders(headers);
Properties properties = result.getProperties();
} catch (ClientException ex) {
/* handle the errors */
} catch (CacheException ex) {
/* handle the errors */
}
```
Detecting based on a User-Agent string:
```java
String userAgent = "THE USER AGENT ...";
try {
/* get the API instance (singleton) */
Client client = Client.getInstance(new FileCacheProvider());
/* set your licence key */
client.setLicenceKey(LICENCE_KEY);
/* get device properties - by passing a user agent string */
Result result = client.getResultByUserAgent(userAgent);
Properties properties = result.getProperties();
} catch (ClientException ex) {
/* handle the errors */
} catch (CacheException ex) {
/* handle the errors */
}
```
* Use the device properties:
```java
if (properties.containsKey("mobileDevice") && properties.get("mobileDevice").asBoolean()) {
/* example 1: Get the screen width for image optimization */
int displayWidth = properties.containsKey("displayWidth")?
properties.get("displayWidth").asInteger(): 100;
/* example 2: Get the device vendor name */
String vendor = properties.containsKey("vendor")?
properties.get("vendor").asString(): "";
/* example 3: Touch screen optimization */
boolean useBiggerIcons = properties.containsKey("touchScreen")?
properties.get("touchScreen").asBoolean(): false;
/* example 4: Send Geo Location JS to client? */
boolean supportsGeoLocation = properties.containsKey("js.geoLocation")?
properties.get("js.geoLocation").asBoolean(): false;
}
```
See the list of all property names here:
https://deviceatlas.com/resources/available-properties
The availability of a property depends on the device and your licence, before
accessing a property always check if it exists in the set or not.
### Additional Examples ###
Please find more complete examples in the /Examples directory.
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_ Copyright (c) DeviceAtlas Limited 2023. All Rights Reserved. _
_ https://deviceatlas.com _
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