Extends the width of the search view.

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

@@ -89,7 +89,8 @@ public class SearchActivity extends BaseActivity implements SearchView.OnQueryTe
         super.onCreateOptionsMenu(menu);
 
         getMenuInflater().inflate(R.menu.search_toolbar, menu);
-        SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
+        SearchView searchView = (SearchView) menu.findItem(R.id.action_search)
+                .getActionView();
         setupSearchView(searchView);
 
         if (currentQuery != null) {
@@ -160,6 +161,8 @@ public class SearchActivity extends BaseActivity implements SearchView.OnQueryTe
         searchView.setOnQueryTextListener(this);
         searchView.setFocusable(false);
         searchView.setFocusableInTouchMode(false);
+
+        searchView.setMaxWidth(Integer.MAX_VALUE);
     }
 
     private void search(String query) {

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

@@ -16,7 +16,8 @@
             android:layout_width="match_parent"
             android:layout_height="?attr/actionBarSize"
             android:background="?attr/toolbar_background_color"
-            app:navigationIcon="?attr/homeAsUpIndicator" />
+            app:navigationIcon="?attr/homeAsUpIndicator"
+            app:contentInsetStartWithNavigation="0dp" />
 
         <RelativeLayout
             android:layout_width="match_parent"

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

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<android.support.v7.widget.SearchView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    app:searchHintIcon="@null"
+    android:maxWidth="10000dp" />

app/src/main/res/menu/search_toolbar.xml

@@ -6,5 +6,6 @@
         android:title="@string/action_search"
         android:icon="@android:drawable/ic_menu_search"
         app:actionViewClass="android.support.v7.widget.SearchView"
+        android:actionLayout="@layout/search_view"
         app:showAsAction="always" />
 </menu>