FORT SDK integration in android
<p>I want to integrate payment in my app for which I used the "FORT" sdk. I did follow the documentation on the "payfort.com" website but when I integrated the library my app crashed.</p>

<p>this is the error-output: </p>

<pre><code>E/AndroidRuntime: FATAL EXCEPTION: main
                                                                    Process: com.newsolution.jiibli, PID: 12133
                                                                    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.newsolution.jiibli/com.payfort.fort.android.sdk.activities.InitSecureConnectionActivity}: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
                                                                        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3253)
                                                                        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349)
                                                                        at android.app.ActivityThread.access$1100(ActivityThread.java:223)
                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794)
                                                                        at android.os.Handler.dispatchMessage(Handler.java:102)
                                                                        at android.os.Looper.loop(Looper.java:148)
                                                                        at android.app.ActivityThread.main(ActivityThread.java:7223)
                                                                        at java.lang.reflect.Method.invoke(Native Method)
                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
                                                                     Caused by: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
                                                                        at android.support.v7.app.AppCompatDelegateImplV7.createSubDecor(AppCompatDelegateImplV7.java:343)
                                                                        at android.support.v7.app.AppCompatDelegateImplV7.ensureSubDecor(AppCompatDelegateImplV7.java:312)
                                                                        at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:277)
                                                                        at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
                                                                        at com.payfort.fort.android.sdk.activities.InitSecureConnectionActivity.onCreate(InitSecureConnectionActivity.java:50)
                                                                        at android.app.Activity.performCreate(Activity.java:6877)
                                                                        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1136)
                                                                        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3206)
                                                                        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3349) 
                                                                        at android.app.ActivityThread.access$1100(ActivityThread.java:223) 
                                                                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1794) 
                                                                        at android.os.Handler.dispatchMessage(Handler.java:102) 
                                                                        at android.os.Looper.loop(Looper.java:148) 
                                                                        at android.app.ActivityThread.main(ActivityThread.java:7223) 
                                                                        at java.lang.reflect.Method.invoke(Native Method) 
                                                                        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 
                                                                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120) 
</code></pre>