Initial

mastodon/src/main/java/org/joinmastodon/android/MainActivity.java

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+package org.joinmastodon.android;
+
+import android.os.Bundle;
+
+import org.joinmastodon.android.api.session.AccountSessionManager;
+import org.joinmastodon.android.fragments.HomeFragment;
+import org.joinmastodon.android.fragments.SplashFragment;
+
+import androidx.annotation.Nullable;
+import me.grishka.appkit.FragmentStackActivity;
+
+public class MainActivity extends FragmentStackActivity{
+	@Override
+	protected void onCreate(@Nullable Bundle savedInstanceState){
+		super.onCreate(savedInstanceState);
+
+		if(savedInstanceState==null){
+			if(AccountSessionManager.getInstance().getLoggedInAccounts().isEmpty()){
+				showFragmentClearingBackStack(new SplashFragment());
+			}else{
+				Bundle args=new Bundle();
+				args.putString("account", AccountSessionManager.getInstance().getLastActiveAccountID());
+				HomeFragment fragment=new HomeFragment();
+				fragment.setArguments(args);
+				showFragmentClearingBackStack(fragment);
+			}
+		}
+	}
+}