How to add toolbars to AppCompatPreferenceActivity?

Question

I'm trying to add toolbars to the AppCompatPreferenceActivity but I don't know how to do so.

Can you tell me how?

Answer 1

First copy AppCompatPreferenceActivity to your project.

The use it like this:

public class SettingsActivity extends AppCompatPreferenceActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setupActionBar();
    }

    private void setupActionBar() {
        Toolbar toolbar;

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
            ViewGroup root = (ViewGroup) findViewById(android.R.id.list).getParent().getParent().getParent();
            toolbar = (Toolbar) LayoutInflater.from(this).inflate(R.layout.view_toolbar, root, false);
            root.addView(toolbar, 0);
        } else {
            ViewGroup root = (ViewGroup) findViewById(android.R.id.content);
            ListView content = (ListView) root.getChildAt(0);
            root.removeAllViews();
            toolbar = (Toolbar) LayoutInflater.from(this).inflate(R.layout.view_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 = toolbar.getHeight();
            }
            content.setPadding(0, height, 0, 0);
            root.addView(content);
            root.addView(toolbar);
        }
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }
}

It's not a very elegant solution but it works. Tested on Gingerbread and Lollipop.

Answer 2

Try this:

public class SettingsActivity extends AppCompatPreferenceActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        LinearLayout root = (LinearLayout) findViewById(android.R.id.list).getParent().getParent().getParent();
        Toolbar toolbar = (Toolbar) LayoutInflater.from(this).inflate(R.layout.toolbar_settings, root, false);
        root.addView(toolbar, 0);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }
}

EDIT

AppCompatPreferenceActivity is this demo class for supprt v7:

https://android.googlesource.com/platform/development/+/nougat-release/samples/Support7Demos/src/com/example/android/supportv7/app/AppCompatPreferenceActivity.java