Setting a runtime license (Android)

#1 Posted : Friday, April 21, 2017 1:08:21 PM(UTC)

Roberto

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A detailed tutorial for this can be found here: https://www.leadtools.com/help/sdk/tutorials/android-add-references-and-set-a-license.html

One of the more common issues we see in the support queue are issues with setting a license. This post will focus on the Android mobile platform and setting a license there. You can reference additional information regarding setting a license in this FAQ post: https://www.leadtools.com/support/forum/posts/t12112-How-do-I-set-an-evaluation-or-purchased-imaging-license

Android:

1. First, you will need to place the LEADTOOLS kernel as well as your license file in your Android Studio project. In your application's module, place leadtools.jar from /Bin/Java into the /libs folder. Create a /src/main/jniLibs folder, and then create a subfolder for the CPU architectures that you wish to support. In this example, we are supporting armeabi-v7a only. Place the appropriate version of libleadtools.so from /Bin/Android/ into this folder. Then, rename your license file such that it only contains lowercase letters. Create a /src/main/res/raw folder in your module and place the license file there.
add android license

2. Ensure that you are compiling leadtools.jar from the /libs folder. Open your module's build.gradle file and place one of the following lines in the 'dependencies' block. You can opt to compile all .jar files in the /libs folder, or compile individual files.
compile dependencies

3. Lastly, you will need to set your license at runtime. Here is an example on how to do so in onCreate() of your startup Activity. Be sure to replace "your_dev_key_goes_here" with your actual development key.

Code:

public class MainActivity extends AppCompatActivity { 
             
    private final String TAG = "MyTag"; 
             
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.activity_main); 
             
        // Get shared libraries path for APK 
        String sharedLibsPath = ""; 
        if (Build.VERSION.SDK_INT < 9) 
            sharedLibsPath = String.format("%s/lib/", this.getApplicationInfo().dataDir); 
        else 
            sharedLibsPath = this.getApplicationInfo().nativeLibraryDir; 
             
        // Load LEADTOOLS native libraries 
        try { 
            Platform.setLibPath(sharedLibsPath); 
            Platform.loadLibrary(LTLibrary.LEADTOOLS); 
        } 
        catch (Exception ex) { 
            Log.d(TAG, "Failed to load LEADTOOLS native libraries"); 
        } 
             
        // Initialize and set license 
        try{ 
            RasterSupport.initialize(this); 
            RasterSupport.setLicense(getResources().openRawResource(R.raw.leadtools), "your_dev_key_goes_here"); 
        } 
        catch(Exception ex){ 
            Log.d(TAG, "Failed to set LEADTOOLS license"); 
            finish(); 
        } 
             
        // Ensure that the LEADTOOLS kernel is not expired 
        if(RasterSupport.getKernelExpired()){ 
            Log.d(TAG, "LEADTOOLS kernel is expired"); 
            finish(); 
        } 
             
        //... 
    } 
}

Edited by moderator Wednesday, December 27, 2023 11:36:25 AM(UTC) | Reason: Not specified

Roberto Rodriguez
Developer Support Engineer
LEAD Technologies, Inc.


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Setting a runtime license (Android)