Bump to AndroidX

Author: rogerhu

app/build.gradle

@@ -37,7 +37,7 @@ android {
     defaultConfig {
         versionCode 1
         versionName VERSION_NAME
-        minSdkVersion 14
+        minSdkVersion 21
         targetSdkVersion 28
     }
 
@@ -114,8 +114,7 @@ ext {
 }
 
 dependencies {
-    api "com.android.support:appcompat-v7:${supportVersion}"
-    api "com.android.support:support-v4:${supportVersion}"
+    api "androidx.appcompat:appcompat:1.0.2"
     api 'com.loopj.android:android-async-http:1.4.9'
     implementation files('libs/codepath-utils.jar')
     api 'com.github.scribejava:scribejava-apis:4.1.1'

app/src/main/java/com/codepath/oauth/OAuthLoginActionBarActivity.java

@@ -4,7 +4,9 @@
 
 import android.content.Intent;
 import android.net.Uri;
-import android.support.v7.app.AppCompatActivity;
+
+import androidx.appcompat.app.AppCompatActivity;
+
 
 // This is the ActionBarActivity supportv7 version of LoginActivity
 public abstract class OAuthLoginActionBarActivity<T extends OAuthBaseClient> extends

app/src/main/java/com/codepath/oauth/OAuthLoginActivity.java

@@ -2,7 +2,8 @@
 
 import android.content.Intent;
 import android.net.Uri;
-import android.support.v4.app.FragmentActivity;
+
+import androidx.fragment.app.FragmentActivity;
 
 import com.codepath.utils.GenericsUtil;
 

app/src/main/java/com/codepath/oauth/OAuthLoginFragment.java

@@ -2,7 +2,8 @@
 
 import android.net.Uri;
 import android.os.Bundle;
-import android.support.v4.app.Fragment;
+
+import androidx.fragment.app.Fragment;
 
 import com.codepath.utils.GenericsUtil;