Quick start (with call invitation)

dependencies {
    ...
    implementation 'com.github.ZEGOCLOUD:zego_uikit_prebuilt_call_android:+'    // Add this line to your module-level build.gradle file's dependencies, usually named [app].
}

 // need a activityContext.
PermissionX.init(activityContext).permissions(permission.SYSTEM_ALERT_WINDOW)
   .onExplainRequestReason(new ExplainReasonCallback() {
       @Override
       public void onExplainReason(@NonNull ExplainScope scope, @NonNull List<String> deniedList) {
           String message = "We need your consent for the following permissions in order to use the offline call function properly";
           scope.showRequestReasonDialog(deniedList, message, "Allow", "Deny");
       }
   }).request(new RequestCallback() {
       @Override
       public void onResult(boolean allGranted, @NonNull List<String> grantedList,
           @NonNull List<String> deniedList) {
       }
   });

Application application = ; // Android's application context
long appID = ;   // yourAppID
String appSign =;  // yourAppSign
String userID =; // yourUserID, userID should only contain numbers, English characters, and '_'. 
String userName =;   // yourUserName

ZegoUIKitPrebuiltCallInvitationConfig callInvitationConfig = new ZegoUIKitPrebuiltCallInvitationConfig();

ZegoUIKitPrebuiltCallService.init(getApplication(), appID, appSign, userID, userName,callInvitationConfig);

String targetUserID = ; // The ID of the user you want to call.
String targetUserName = ; // The username of the user you want to call.
Context context = ; // Android context.

ZegoSendCallInvitationButton button = new ZegoSendCallInvitationButton(context);
button.setIsVideoCall(true);
button.setResourceID("zego_uikit_call"); // Please fill in the resource ID name that has been configured in the ZEGOCLOUD's console here.
button.setInvitees(Collections.singletonList(new ZegoUIKitUser(targetUserID,targetUserName)));