Add a JAR file programmatically to an De ...

Add a JAR file programmatically to an Delphi Android project

May 05, 2023

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To add a JAR file programmatically to an Embarcadero Delphi Android project, you can use the following steps:

  1. Open your Delphi project and navigate to the unit where you want to add the JAR file.

  2. Add the following uses clause at the top of the unit:

uses

Androidapi.JNI.JavaTypes,

Androidapi.JNI.GraphicsContentViewText,

Androidapi.Helpers;

  1. Use the TJPackageManager class to get the path to the JAR file. For example:

var

JARPath: JString;

begin

JARPath := TJPackageManager.JavaClass.getApplicationInfo(

SharedActivityContext.getPackageName(),

TJPackageManager.JavaClass.GETMETADATA).sourceDir;

end;

  1. Use the TJClassLoader class to load the JAR file. For example:

var

ClassLoader: JClassLoader;

begin

ClassLoader := TJClassLoader.JavaClass.init(TJFile.JavaClass.init(StringToJString(JARPath)).getParentFile().toURI().toURL(),

TJClassLoader.JavaClass.getClassLoader());

end;

  1. Use the TJClass class to load the classes from the JAR file. For example:

var

MyClass: JClass;

begin

MyClass := TJClass.JavaClass.forName(StringToJString('com.example.MyClass'), True, ClassLoader);

end;

Note that you will need to replace com.example.MyClass it with the name of the class, you want to load from the JAR file.

Once you have loaded the classes from the JAR file, you can use them in your Delphi code as regular Java classes.

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