Android API Client and File Uploader

Android (Kotlin and Java) integration handles uploads and file operations by wrapping Uploadcare Upload API and REST API. This comprehensive API client lets you use most of the Uploadcare features from within your Android app. It also includes a native File Uploader widget.

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Features

Concise and easy-to-use library without extra resources and drawables.

Uploading (Upload API):

  • Upload files from a file, byte array, URL, URI and cloud sources (up to 5 TB)
  • Multipart uploading for large files
  • Uploading network to speed uploading jobs (like CDN)

File uploading widget:

  • Upload files from a local disk, camera, and cloud sources
  • Track, pause and continue multipart uploading
  • Background uploading
  • Bulk file uploading
  • Material design Uploader appearance customization and styles

File management (REST API):

  • Get file info and perform various operations (store/delete/copy) with them
  • Work with groups of files
  • Get info about account project
  • Manage webhooks
  • Convert documents
  • Encode and transform videos
  • Paginated resource fetching
  • Synchronous and asynchronous operation modes

Image processing (URL API):

  • CDN path builder
  • Compression
  • Geometry
  • Colors
  • Definition
  • Image and text overlays
  • Rotations
  • Recognition
  • File info
  • Proxy (fetch)

Security:

  • Secure authentication
  • Secure uploads (signed uploads)
  • Secure delivery (signed URLs)

Installation from jCenter

The latest stable versions are available at jCenter.

To include API client and File Uploader Widget in your Android project, add this line to the 'gradle.build' file:

implementation 'com.uploadcare.android.library:uploadcare-android:3.1.0'
implementation 'com.uploadcare.android.widget:uploadcare-android-widget:3.1.0'

Initialization

REST API requires both public and secret keys. If you use Upload API only, you can specify just "YOUR_PUBLIC_KEY". Get your Public and Secret API keys.

Kotlin

val uploadcare = UploadcareClient("YOUR_PUBLIC_KEY", "YOUR_SECRET_KEY")kotlin

Java

UploadcareClient uploadcare = new UploadcareClient("YOUR_PUBLIC_KEY", "YOUR_SECRET_KEY");java

For File Uploader Widget, place your Uploadcare public/private keys into ../res/strings.xml file:

<resources>
    <!--Replace with your public/secret keys to use UploadcareWidget. Private key is optional, required only if you use Rest API features.-->
    <string name="uploadcare_public_key" translatable="false">place_uploadcare_public_key_here</string>
    <string name="uploadcare_secret_key" translatable="false">place_uploadcare_secret_key_here</string>
</resources>xml

Using REST API

You can use both synchronous and asynchronous operations.

Asynchronous file info fetch

Kotlin

uploadcare.getFileAsync(
        context, // Context
        "YOUR_FILE_UUID", // File UUID
        object : UploadcareFileCallback {
            override fun onFailure(e: UploadcareApiException) {
                // Handle errors.
            }

            override fun onSuccess(result: UploadcareFile) {
                // Successfully fetched file.
            }
        })kotlin

Java

uploadcare.getFileAsync(
        context, // Context
        "YOUR_FILE_UUID", // File UUID
        new UploadcareFileCallback() {
            @Override
            public void onFailure(@NotNull UploadcareApiException e) {
                // Handle errors.
            }

            @Override
            public void onSuccess(@NonNull UploadcareFile result) {
                // Successfully fetched file.
            }
        });java

Synchronous file info fetch

Kotlin

val file = uploadcare.getFile("YOUR_FILE_UUID")kotlin

Java

UploadcareFile file = uploadcare.getFile("YOUR_FILE_UUID");java

Find out more examples in the API client documentation for Android at GitHub.

Using Upload API

You can use both synchronous and asynchronous operations.

Asynchronous file upload

Kotlin

val context = ...// Context
val fileUri = ...//resource representing file (File/Uri/InputStream/ByteArray/String types are supported).
val uploader = FileUploader(uploadcare, fileUri, context) // Use "MultipleFilesUploader" for multiple files.
    .store(true)
    // Other upload parameters.

uploader.uploadAsync(object : UploadFileCallback {
    override fun onFailure(e: UploadcareApiException) {
        // Handle errors.
    }

    override fun onProgressUpdate(
                        bytesWritten: Long,
                        contentLength: Long,
                        progress: Double) {
        // Upload progress info.
    }

    override fun onSuccess(result: UploadcareFile) {
        // Successfully uploaded file to Uploadcare.
    }
})

// Cancel upload in progress.
uploader.cancel()kotlin

Java

Context context = ...// Context
Uri fileUri = ...//resource representing file (File/Uri/InputStream/ByteArray/String types are supported).
Uploader uploader = new FileUploader(uploadcare, fileUri, context) // Use "MultipleFilesUploader" for multiple files.
    .store(true);
    // Other upload parameters.

uploader.uploadAsync(new UploadFileCallback() {
    @Override
    public void onFailure(UploadcareApiException e) {
        // Handle errors.
    }

    @Override
    public void onProgressUpdate(
                        Long bytesWritten,
                        Long contentLength,
                        Double progress) {
        // Upload progress info.
    }

    @Override
    public void onSuccess(UploadcareFile file) {
        // Successfully uploaded file to Uploadcare.
    }
});

// Cancel upload in progress.
uploader.cancel();java

Synchronous file upload

Kotlin

val context = ...// Context
val fileUri = ...//resource representing file (File/Uri/InputStream/ByteArray/String types are supported).
val uploader = FileUploader(uploadcare, fileUri, context) // Use "MultipleFilesUploader" for multiple files.
    .store(true)
    // Other upload parameters.

try {
    val file = uploader.upload()
    // Successfully uploaded file to Uploadcare.
} catch (e: UploadFailureException) {
    // Handle errors.
}kotlin

Java

Context context = ...// Context
Uri fileUri = ...//resource representing file (File/Uri/InputStream/ByteArray/String types are supported).
Uploader uploader = new FileUploader(uploadcare, fileUri, context) // Use "MultipleFilesUploader" for multiple files.
    .store(true);
    // Other upload parameters.

try {
    UploadcareFile file = uploader.upload();
    // Successfully uploaded file to Uploadcare.
} catch (UploadFailureException e) {
    // Handle errors.
}java

Find out more examples in the API client documentation for Android at GitHub.

Using File Uploader Widget

You can select and upload file from any available local file, camera, external source, Activity/Fragment.

Kotlin

// Launch UploadcareWidget
val fragment = this //or val activity = this;
UploadcareWidget.getInstance()
                .selectFile(fragment)
                //set other parameters for upload
                .launch()

// Handle result
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
    super.onActivityResult(requestCode, resultCode, data)

    val result = UploadcareWidgetResult.fromIntent(data)
    result?.let {
        //handle result.
    }
}kotlin

Java

// Launch UploadcareWidget
Fragment fragment = this; //or Activity activity = this;
UploadcareWidget.getInstance()
                .selectFile(fragment)
                //set other parameters for upload
                .launch();

// Handle result
@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    UploadcareWidgetResult result = UploadcareWidgetResult.fromIntent(data);
    if(result != null){
        //handle result.
    }
}java

Find out more examples in the File Uploader Widget documentation for Android at GitHub.

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