[Kahla Notify] [V2.0.2] The app can't handle when I tried to log in by filling every field empty

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<ul> <li><span>Repository: <a href="https://github.com/AiursoftWeb/Kahla-Notify" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">https://github.com/AiursoftWeb/Kahla-Notify <li>Project Name: Kahla Notify <li>My Submitted Issue: <a href="https://github.com/AiursoftWeb/Kahla-Notify/issues/7" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">here <li>My GitHub Account: <a href="https://github.com/sagorahmed" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">here <li>Fixed Commit: <a href="https://github.com/AiursoftWeb/Kahla-Notify/commit/0ec00a5e14f7743248ce84cb14b8c26b32e739f1" target="_blank" rel="noreferrer noopener" title="This link will take you away from hive.blog" class="external_link">here <h4>Expected behavior <p dir="auto">I expected that the app would notify me or warn me when I click on the login after filling all fields blank. <h4>Actual behavior <p dir="auto">When I clicked on the login button after letting all fields empty, then the app crashed. <h4>How to reproduce <p dir="auto">Here is every possible detail to reproduce the bug. <ol> <li>Open the app. <li>The login page will arrive. Clear all the fields and click on the login. <li>Notice the error. <ul> <li>App version: 2.0.2 <li>Operating system: Android 6.0.1 <h4>Recording Of The Bug <p dir="auto"><img src="https://images.hive.blog/0x0/https://media.giphy.com/media/KbN1aUZybcrAYCiun4/giphy.gif" alt="kahla" /> <h4>LogCat <pre><code>05-26 13:43:00.241 27643 27643 E AndroidRuntime: FATAL EXCEPTION: main 05-26 13:43:00.241 27643 27643 E AndroidRuntime: Process: com.ganlvtech.kahlanotify, PID: 27643 05-26 13:43:00.241 27643 27643 E AndroidRuntime: java.lang.IllegalArgumentException: Expected URL scheme 'http' or 'https' but no colon was found 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at okhttp3.HttpUrl$Builder.parse(HttpUrl.java:1333) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at okhttp3.HttpUrl.get(HttpUrl.java:916) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at com.ganlvtech.kahlanotify.kahla.BaseService.newHttpUrlBuilder(BaseService.java:27) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at com.ganlvtech.kahlanotify.kahla.BaseService.newRequestBuilder(BaseService.java:33) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at com.ganlvtech.kahlanotify.kahla.AuthService.newAuthByPasswordCall(AuthService.java:64) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at com.ganlvtech.kahlanotify.client.KahlaClient.login(KahlaClient.java:275) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at com.ganlvtech.kahlanotify.LoginActivity.login(LoginActivity.java:152) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at com.ganlvtech.kahlanotify.LoginActivity.access$200(LoginActivity.java:17) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at com.ganlvtech.kahlanotify.LoginActivity$5.onClick(LoginActivity.java:93) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at android.view.View.performClick(View.java:5714) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at android.widget.TextView.performClick(TextView.java:10932) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at android.view.View$PerformClick.run(View.java:22589) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:739) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:95) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at android.os.Looper.loop(Looper.java:148) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7325) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230) 05-26 13:43:00.241 27643 27643 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)