Fix login activity crashes, repeated re-authentications,

layout when keyboard appears

app/src/main/AndroidManifest.xml

@@ -21,7 +21,9 @@
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
-        <activity android:name=".LoginActivity">
+        <activity
+            android:name=".LoginActivity"
+            android:windowSoftInputMode="adjustResize">
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
 

app/src/main/java/com/keylesspalace/tusky/BaseActivity.java

@@ -22,7 +22,6 @@ import android.graphics.Color;
 import android.graphics.PorterDuff;
 import android.graphics.drawable.Drawable;
 import android.os.Bundle;
-import android.preference.PreferenceManager;
 import android.support.annotation.Nullable;
 import android.support.v7.app.AppCompatActivity;
 import android.text.Spanned;
@@ -68,7 +67,7 @@ public class BaseActivity extends AppCompatActivity {
 
     @Override
     protected void onDestroy() {
-        mastodonApiDispatcher.cancelAll();
+        if(mastodonApiDispatcher != null) mastodonApiDispatcher.cancelAll();
         super.onDestroy();
     }
 

app/src/main/java/com/keylesspalace/tusky/LoginActivity.java

@@ -55,6 +55,11 @@ public class LoginActivity extends BaseActivity {
     @BindView(R.id.button_login) Button button;
     @BindView(R.id.no_account) TextView noAccount;
 
+    @Override
+    protected void createMastodonAPI() {
+        // Don't do this in this activity, since we don't know a domain yet
+    }
+
     /**
      * Chain together the key-value pairs into a query string, for either appending to a URL or
      * as the content of an HTTP request.
@@ -76,7 +81,7 @@ public class LoginActivity extends BaseActivity {
     private String validateDomain(String s) {
         s = s.replaceFirst("http://", "");
         s = s.replaceFirst("https://", "");
-        return s;
+        return s.trim();
     }
 
     private String getOauthRedirectUri() {
@@ -241,6 +246,17 @@ public class LoginActivity extends BaseActivity {
         Uri uri = getIntent().getData();
         String redirectUri = getOauthRedirectUri();
 
+        preferences = getSharedPreferences(
+                getString(R.string.preferences_file_key), Context.MODE_PRIVATE);
+
+        if (preferences.getString("accessToken", null) != null && preferences.getString("domain", null) != null) {
+            // We are already logged in, go to MainActivity
+            Intent intent = new Intent(this, MainActivity.class);
+            startActivity(intent);
+            finish();
+            return;
+        }
+
         if (uri != null && uri.toString().startsWith(redirectUri)) {
             // This should either have returned an authorization code or an error.
             String code = uri.getQueryParameter("code");
@@ -250,8 +266,6 @@ public class LoginActivity extends BaseActivity {
                 /* During the redirect roundtrip this Activity usually dies, which wipes out the
                  * instance variables, so they have to be recovered from where they were saved in
                  * SharedPreferences. */
-                preferences = getSharedPreferences(
-                        getString(R.string.preferences_file_key), Context.MODE_PRIVATE);
                 domain = preferences.getString("domain", null);
                 clientId = preferences.getString("clientId", null);
                 clientSecret = preferences.getString("clientSecret", null);

app/src/main/res/layout/activity_login.xml

@@ -1,31 +1,27 @@
 <?xml version="1.0" encoding="utf-8"?>
-<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    android:orientation="vertical"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    android:padding="16dp"
+    android:fillViewport="true"
     tools:context="com.keylesspalace.tusky.LoginActivity">
 
-    <RelativeLayout
-        android:layout_width="match_parent"
-        android:layout_height="match_parent">
-
     <LinearLayout
         android:orientation="vertical"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_centerInParent="true"
-            android:gravity="center">
+        android:layout_width="match_parent"
+        android:padding="16dp"
+        android:gravity="center"
+        android:layout_height="wrap_content">
 
         <ImageView
-                android:layout_width="match_parent"
+            android:layout_width="wrap_content"
             android:layout_height="wrap_content"
+            android:layout_marginBottom="50dp"
             android:src="@drawable/elephant_friend"/>
 
         <android.support.design.widget.TextInputLayout
-                android:layout_height="match_parent"
-                android:layout_width="wrap_content">
+            android:layout_height="wrap_content"
+            android:layout_width="250dp">
             <EditText
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
@@ -37,27 +33,23 @@
 
         <Button
             android:id="@+id/button_login"
-                android:layout_width="match_parent"
+            android:layout_width="250dp"
             android:layout_height="wrap_content"
             android:layout_marginTop="4dp"
             android:elevation="0dp"
             android:text="@string/action_login" />
 
         <TextView
-                android:layout_width="match_parent"
+            android:layout_width="250dp"
             android:layout_height="wrap_content"
             android:visibility="gone"
             android:id="@+id/text_error" />
 
         <TextView
-                android:layout_width="match_parent"
+            android:layout_width="250dp"
             android:layout_height="wrap_content"
             android:textAlignment="center"
             android:id="@+id/no_account"
             android:text="@string/link_no_account" />
-
     </LinearLayout>
-
-    </RelativeLayout>
-
-</android.support.design.widget.CoordinatorLayout>
+</ScrollView>