areadme.md

Como añadir un menu en la preferenceActivity()

hackFixContentWithActionBar.java

private void hackFixContentWithActionBar() {

        int horizontalMargin = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
                2, getResources().getDisplayMetrics());

        int verticalMargin = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP,
                2, getResources().getDisplayMetrics());


        int topMargin=0;
        TypedValue tv = new TypedValue();
        if (getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) {
            topMargin = TypedValue.complexToDimensionPixelSize(tv.data, getResources().getDisplayMetrics());
        }

        LinearLayout root = (LinearLayout) findViewById(android.R.id.list).getParent().getParent().getParent();
        root.setPadding(horizontalMargin, topMargin, horizontalMargin, verticalMargin);




/*        Toolbar bar;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
            LinearLayout root = (LinearLayout) findViewById(android.R.id.list).getParent().getParent().getParent();
            bar = (Toolbar) LayoutInflater.from(this).inflate(R.layout.settings_toolbar, root, false);
            root.addView(bar, 0); // insert at top
        } else {
            ViewGroup root = (ViewGroup) findViewById(android.R.id.content);
            ListView content = (ListView) root.getChildAt(0);

            root.removeAllViews();

            bar = (Toolbar) LayoutInflater.from(this).inflate(R.layout.settings_toolbar, root, false);


            int height;
            TypedValue tv = new TypedValue();
            if (getTheme().resolveAttribute(R.attr.actionBarSize, tv, true)) {
                height = TypedValue.complexToDimensionPixelSize(tv.data, getResources().getDisplayMetrics());
            }else{
                height = bar.getHeight();
            }

            content.setPadding(0, height, 0, 0);

            root.addView(content);
            root.addView(bar);
        }*/

    }

SettingsActivity.java

    private void setupActionBar() {

        getLayoutInflater().inflate(R.layout.toolbar_settings, (ViewGroup)findViewById(android.R.id.content));
        Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            // Show the Up button in the action bar.
            actionBar.setDisplayHomeAsUpEnabled(true);
            actionBar.setTitle(getString(R.string.settings_activity_title)); //Fix title after change locale
        }

    }

toolbar_menu.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:minHeight="?attr/actionBarSize"
    android:background="?attr/colorPrimary"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />