Android Creating a Preference Screen with support (v21) Toolbar

Question

提问by James Cross

I was having trouble using the new Material Design toolbar in the support library on a Preference screen.

I have a settings.xml file as below:

<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
    <PreferenceCategory
        android:title="@string/AddingItems"
        android:key="pref_key_storage_settings">

        <ListPreference
            android:key="pref_key_new_items"
            android:title="@string/LocationOfNewItems"
            android:summary="@string/LocationOfNewItemsSummary"
            android:entries="@array/new_items_entry"
            android:entryValues="@array/new_item_entry_value"
            android:defaultValue="1"/>

    </PreferenceCategory>
</PreferenceScreen>

The strings are defined elsewhere.

Answer 1

采纳答案by James Cross

You can use a PreferenceFragment, as an alternative to PreferenceActivity. So, here is the wrapping Activityexample:

public class MyPreferenceActivity extends ActionBarActivity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.pref_with_actionbar);

        android.support.v7.widget.Toolbar toolbar = (android.support.v7.widget.Toolbar) findViewById(uk.japplications.jcommon.R.id.toolbar);
        setSupportActionBar(toolbar);

        getFragmentManager().beginTransaction().replace(R.id.content_frame, new MyPreferenceFragment()).commit();
    }
}

And here is the layout file (pref_with_actionbar):

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_height="@dimen/action_bar_height"
        android:layout_width="match_parent"
        android:minHeight="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:theme="@style/ToolbarTheme.Base"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>

    <FrameLayout
        android:id="@+id/content_frame"
        android:layout_below="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</RelativeLayout>

And finally the PreferenceFragment:

public static class MyPreferenceFragment extends PreferenceFragment{
    @Override
    public void onCreate(final Bundle savedInstanceState){
        super.onCreate(savedInstanceState);
        addPreferencesFromResource(R.xml.settings);
    }
}

I hope this helps someone.

Answer 2

回答by David Passmore

Please find the GitHub Repo: Here

A bit late to the party, but this is my solution that I am using as a work around continuing to use PreferenceActivity:

settings_toolbar.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"
    app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:minHeight="?attr/actionBarSize"
    app:navigationContentDescription="@string/abc_action_bar_up_description"
    android:background="?attr/colorPrimary"
    app:navigationIcon="?attr/homeAsUpIndicator"
    app:title="@string/action_settings"
    />

SettingsActivity.java :

public class SettingsActivity extends PreferenceActivity {

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

        LinearLayout root = (LinearLayout)findViewById(android.R.id.list).getParent().getParent().getParent();
        Toolbar bar = (Toolbar) LayoutInflater.from(this).inflate(R.layout.settings_toolbar, root, false);
        root.addView(bar, 0); // insert at top
        bar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });
    }

}

Result :

example

UPDATE (Gingerbread Compatibility) :

As per the comments, Gingerbread Devices are returning NullPointerException on this line:

LinearLayout root = (LinearLayout)findViewById(android.R.id.list).getParent().getParent().getParent();

FIX:

SettingsActivity.java :

public class SettingsActivity extends PreferenceActivity {

    @Override
    protected void onPostCreate(Bundle savedInstanceState) {
        super.onPostCreate(savedInstanceState);
        Toolbar bar;

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
            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);
        }

        bar.setNavigationOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });
    }
}

Any issues with the above let me know!

UPDATE 2: TINTING WORKAROUND

As pointed out in many dev notes PreferenceActivitydoes not support tinting of elements, however by utilising a few internal classes you CAN achieve this. That is until these classes are removed. (Works using appCompat support-v7 v21.0.3).

Add the following imports:

import android.support.v7.internal.widget.TintCheckBox;
import android.support.v7.internal.widget.TintCheckedTextView;
import android.support.v7.internal.widget.TintEditText;
import android.support.v7.internal.widget.TintRadioButton;
import android.support.v7.internal.widget.TintSpinner;

Then override the onCreateViewmethod:

@Override
public View onCreateView(String name, Context context, AttributeSet attrs) {
    // Allow super to try and create a view first
    final View result = super.onCreateView(name, context, attrs);
    if (result != null) {
        return result;
    }

    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
        // If we're running pre-L, we need to 'inject' our tint aware Views in place of the
        // standard framework versions
        switch (name) {
            case "EditText":
                return new TintEditText(this, attrs);
            case "Spinner":
                return new TintSpinner(this, attrs);
            case "CheckBox":
                return new TintCheckBox(this, attrs);
            case "RadioButton":
                return new TintRadioButton(this, attrs);
            case "CheckedTextView":
                return new TintCheckedTextView(this, attrs);
        }
    }

    return null;
}

Result:

example 2

AppCompat 22.1

AppCompat 22.1 introduced new tinted elements, meaning that there is no longer a need to utilise the internal classes to achieve the same effect as the last update. Instead follow this (still overriding onCreateView):

@Override
public View onCreateView(String name, Context context, AttributeSet attrs) {
    // Allow super to try and create a view first
    final View result = super.onCreateView(name, context, attrs);
    if (result != null) {
        return result;
    }

    if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
        // If we're running pre-L, we need to 'inject' our tint aware Views in place of the
        // standard framework versions
        switch (name) {
            case "EditText":
                return new AppCompatEditText(this, attrs);
            case "Spinner":
                return new AppCompatSpinner(this, attrs);
            case "CheckBox":
                return new AppCompatCheckBox(this, attrs);
            case "RadioButton":
                return new AppCompatRadioButton(this, attrs);
            case "CheckedTextView":
                return new AppCompatCheckedTextView(this, attrs);
        }
    }

    return null;
}

NESTED PREFERENCE SCREENS

A lot of people are experiencing issues with including the Toolbar in a nested <PreferenceScreen />however, I have found a solution!! - After a lot of trial and error!

Add the following to your SettingsActivity:

@SuppressWarnings("deprecation")
@Override
public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
    super.onPreferenceTreeClick(preferenceScreen, preference);

    // If the user has clicked on a preference screen, set up the screen
    if (preference instanceof PreferenceScreen) {
        setUpNestedScreen((PreferenceScreen) preference);
    }

    return false;
}

public void setUpNestedScreen(PreferenceScreen preferenceScreen) {
    final Dialog dialog = preferenceScreen.getDialog();

    Toolbar bar;

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

    bar.setTitle(preferenceScreen.getTitle());

    bar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            dialog.dismiss();
        }
    });
}

The reason that PreferenceScreen's are such a pain is because they are based as a wrapper dialog, so we need to capture the dialog layout to add the toolbar to it.

Toolbar Shadow

By design importing the Toolbardoes not allow for elevation and shadowing in pre-v21 devices, so if you would like to have elevation on your Toolbaryou need to wrap it in a AppBarLayout:

settings_toolbar.xml:

<android.support.design.widget.AppBarLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

   <android.support.v7.widget.Toolbar
       .../>

</android.support.design.widget.AppBarLayout>

Not forgetting to add the add the Design Support library as a dependency in build.gradlefile:

compile 'com.android.support:support-v4:22.2.0'
compile 'com.android.support:appcompat-v7:22.2.0'
compile 'com.android.support:design:22.2.0'

Android 6.0

I have investigated the reported overlapping issue and I cannot reproduce the issue.

The full code in use as above produces the following:

If I am missing something please let me know via this repoand I will investigate.

Answer 3

回答by Gábor

Completely new update.

With some experimentation, I seem to have found the working AppCompat 22.1+ solution for nested preference screens.

First, as it's mentioned in many answers (including one here), you'll need to use the new AppCompatDelegate. Either use the AppCompatPreferenceActivity.javafile from the support demos (https://android.googlesource.com/platform/development/+/58bf5b99e6132332afb8b44b4c8cedf5756ad464/samples/Support7Demos/src/com/example/android/supportv7/app/AppCompatPreferenceActivity.java) and simply extend from it, or copy the relevant functions into your own PreferenceActivity. I'll show the first approach here:

public class SettingsActivity extends AppCompatPreferenceActivity {

  @Override
  public void onBuildHeaders(List<Header> target) {
    loadHeadersFromResource(R.xml.settings, target);

    setContentView(R.layout.settings_page);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    ActionBar bar = getSupportActionBar();
    bar.setHomeButtonEnabled(true);
    bar.setDisplayHomeAsUpEnabled(true);
    bar.setDisplayShowTitleEnabled(true);
    bar.setHomeAsUpIndicator(R.drawable.abc_ic_ab_back_mtrl_am_alpha);
    bar.setTitle(...);
  }

  @Override
  protected boolean isValidFragment(String fragmentName) {
    return SettingsFragment.class.getName().equals(fragmentName);
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
      case android.R.id.home:
        onBackPressed();
        break;
    }
    return super.onOptionsItemSelected(item);
  }
}

The accompanying layout is rather simple and usual (layout/settings_page.xml):

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_margin="0dp"
    android:orientation="vertical"
    android:padding="0dp">
  <android.support.v7.widget.Toolbar
      android:id="@+id/toolbar"
      android:layout_width="match_parent"
      android:layout_height="?attr/actionBarSize"
      android:background="?attr/colorPrimary"
      android:elevation="4dp"
      android:theme="@style/..."/>
  <ListView
      android:id="@id/android:list"
      android:layout_width="match_parent"
      android:layout_height="match_parent"/>
</LinearLayout>

The preferences themselves are defined as usual (xml/settings.xml):

<preference-headers xmlns:android="http://schemas.android.com/apk/res/android">
  <header
      android:fragment="com.example.SettingsFragment"
      android:summary="@string/..."
      android:title="@string/...">
    <extra
        android:name="page"
        android:value="page1"/>
  </header>
  <header
      android:fragment="com.example.SettingsFragment"
      android:summary="@string/..."
      android:title="@string/...">
    <extra
        android:name="page"
        android:value="page2"/>
  </header>
  ...
</preference-headers>

No real difference to solutions on the net until this point. Actually, you can use this even if you don't have nested screens, no headers, just a single screen.

We use a common PreferenceFragmentfor all deeper pages, differentiated by the extraparameters in the headers. Each page will have a separate XML with a common PreferenceScreeninside (xml/settings_page1.xmlet al.). The fragment uses the same layout as the activity, including the toolbar.

public class SettingsFragment extends PreferenceFragment {

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getActivity().setTheme(R.style...);

    if (getArguments() != null) {
      String page = getArguments().getString("page");
      if (page != null)
        switch (page) {
          case "page1":
            addPreferencesFromResource(R.xml.settings_page1);
            break;
          case "page2":
            addPreferencesFromResource(R.xml.settings_page2);
            break;
          ...
        }
    }
  }

  @Override
  public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View layout = inflater.inflate(R.layout.settings_page, container, false);
    if (layout != null) {
      AppCompatPreferenceActivity activity = (AppCompatPreferenceActivity) getActivity();
      Toolbar toolbar = (Toolbar) layout.findViewById(R.id.toolbar);
      activity.setSupportActionBar(toolbar);

      ActionBar bar = activity.getSupportActionBar();
      bar.setHomeButtonEnabled(true);
      bar.setDisplayHomeAsUpEnabled(true);
      bar.setDisplayShowTitleEnabled(true);
      bar.setHomeAsUpIndicator(R.drawable.abc_ic_ab_back_mtrl_am_alpha);
      bar.setTitle(getPreferenceScreen().getTitle());
    }
    return layout;
  }

  @Override
  public void onResume() {
    super.onResume();

    if (getView() != null) {
      View frame = (View) getView().getParent();
      if (frame != null)
        frame.setPadding(0, 0, 0, 0);
    }
  }
}

Finally, a quick summary of how this actually works. The new AppCompatDelegateallows us to use any activity with AppCompat features, not only those extending from the activities actually in AppCompat. This means that we can turn the good old PreferenceActivityinto a new one and add the toolbar as usual. From that point on, we can stick to the old solutions regarding preference screens and headers, without any deviation from the existing documentation. There is just one important point: don't use onCreate()in the activity because it will lead to errors. Use onBuildHeaders()for all operations like adding the toolbar.

The only real difference is, and that's what makes it work with nested screens is that you can use the same approach with the fragments. You can use their onCreateView()the same way, inflating your own layout instead of the system one, adding the toolbar the same way as in the activity.

Answer 4

回答by Sven Dubbeld

If you want to use PreferenceHeaders you can use the following approach:

import android.support.v7.widget.Toolbar;

public class MyPreferenceActivity extends PreferenceActivity

   Toolbar mToolbar;

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

        ViewGroup root = (ViewGroup) findViewById(android.R.id.content);
        LinearLayout content = (LinearLayout) root.getChildAt(0);
        LinearLayout toolbarContainer = (LinearLayout) View.inflate(this, R.layout.activity_settings, null);

        root.removeAllViews();
        toolbarContainer.addView(content);
        root.addView(toolbarContainer);

        mToolbar = (Toolbar) toolbarContainer.findViewById(R.id.toolbar);
    }

    @Override
    public void onBuildHeaders(List<Header> target) {
        loadHeadersFromResource(R.xml.pref_headers, target);
    }

    // Other methods

}

layout/activity_settings.xml

<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_height="?attr/actionBarSize"
        android:layout_width="match_parent"
        android:minHeight="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:theme="@style/AppTheme"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light"/>

</LinearLayout>

You can use whatever layout you prefer here, just make sure you adjust it in the Java code as well.

And finally, your file with headers (xml/pref_headers.xml)

<preference-headers xmlns:android="http://schemas.android.com/apk/res/android">

    <header
        android:fragment="com.example.FirstFragment"
        android:title="@string/pref_header_first" />
    <header
        android:fragment="com.example.SecondFragment"
        android:title="@string/pref_header_second" />

</preference-headers>

Answer 5

回答by MrBrightside

With the release of the Android Support Library 22.1.0 and the new AppCompatDelegate, here you can find a nice sample of an implementation of the PreferenceActivity with material support with backwards compatibility.

UpdateIt works on nested screens too.

https://android.googlesource.com/platform/development/+/marshmallow-mr3-release/samples/Support7Demos/src/com/example/android/supportv7/app/AppCompatPreferenceActivity.java

Answer 6

回答by midhunhk

While the above answers seem elaborate, if you want a quick fix solution to use Toolbar with support API 7 and up all the while extending PreferenceActivity, I got help from this project below.

https://github.com/AndroidDeveloperLB/ActionBarPreferenceActivity

activity_settings.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/app_theme_light"
    app:popupTheme="@style/Theme.AppCompat.Light"
    app:theme="@style/Theme.AppCompat" />

<FrameLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="@dimen/padding_medium" >

    <ListView
        android:id="@android:id/list"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</FrameLayout>

SettingsActivity.java

public class SettingsActivity extends PreferenceActivity {

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

    setContentView(R.layout.activity_settings);

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

    addPreferencesFromResource(R.xml.preferences);

    toolbar.setClickable(true);
    toolbar.setNavigationIcon(getResIdFromAttribute(this, R.attr.homeAsUpIndicator));
    toolbar.setTitle(R.string.menu_settings);
    toolbar.setNavigationOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            finish();
        }
    });

}

private static int getResIdFromAttribute(final Activity activity, final int attr) {
    if (attr == 0) {
        return 0;
    }
    final TypedValue typedvalueattr = new TypedValue();
    activity.getTheme().resolveAttribute(attr, typedvalueattr, true);
    return typedvalueattr.resourceId;
}
}

Answer 7

回答by SilverX

I too have been looking for a solution to adding the v7support toolbar (API 25) to the AppCompatPreferenceActivity (that is automatically created by AndroidStudio when adding a SettingsActivity). After reading several solutions and trying each of them out I struggled to get the generated PreferenceFragment examples to display with a toolbar as well.

A modified solution that sort of worked was from "Gabor".

One of the caveats I faced was 'onBuildHeaders' only fires once. If you turn a device (like a phone) sideways, the view recreates and the PreferenceActivity is left without a toolbar again, however the PreferenceFragments would retain theirs.

I tried using 'onPostCreate' to call 'setContentView', while this worked to recreate the toolbar when the orientation changed, PreferenceFragments would then be rendered blank.

What I have come up with leverages just about every tip and answer I could read about this subject. I hope others find it useful as well.

We'll start with the Java

Firstin (the generated) AppCompatPreferenceActivity.javaI modified 'setSupportActionBar' like so:

public void setSupportActionBar(@Nullable Toolbar toolbar) {
    getDelegate().setSupportActionBar(toolbar);
    ActionBar bar = getDelegate().getSupportActionBar();
    bar.setHomeButtonEnabled(true);
    bar.setDisplayHomeAsUpEnabled(true);
}

Second, I created a new class named AppCompatPreferenceFragment.java(it is current an unused name, although it may not stay that way!):

abstract class AppCompatPreferenceFragment extends PreferenceFragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.activity_settings, container, false);
        if (view != null) {
            Toolbar toolbar = (Toolbar) view.findViewById(R.id.toolbar_settings);
            ((AppCompatPreferenceActivity) getActivity()).setSupportActionBar(toolbar);
        }
        return view;
    }

    @Override
    public void onResume() {
        super.onResume();
        View frame = (View) getView().getParent();
        if (frame != null) frame.setPadding(0, 0, 0, 0);
    }
}

This is the portion of Gabor's answer that worked.

Last, To get consistency we need to make some changes to SettingsActivity.java:

public class SettingsActivity extends AppCompatPreferenceActivity {

    boolean mAttachedFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        mAttachedFragment = false;
        super.onCreate(savedInstanceState);
    }

    @Override
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public void onBuildHeaders(List<Header> target) {
        loadHeadersFromResource(R.xml.pref_headers, target);
    }

    @Override
    public void onAttachFragment(Fragment fragment) {
        mAttachedFragment = true;
        super.onAttachFragment(fragment);
    }

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

        //if we didn't attach a fragment, go ahead and apply the layout
        if (!mAttachedFragment) {
            setContentView(R.layout.activity_settings);
            setSupportActionBar((Toolbar)findViewById(R.id.toolbar_settings));
        }
    }

    /**
     * This fragment shows general preferences only. It is used when the
     * activity is showing a two-pane settings UI.
     */
    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
    public static class GeneralPreferenceFragment extends AppCompatPreferenceFragment {
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);

            addPreferencesFromResource(R.xml.pref_general);
            setHasOptionsMenu(true);

            bindPreferenceSummaryToValue(findPreference("example_text"));
            bindPreferenceSummaryToValue(findPreference("example_list"));
        }

        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            int id = item.getItemId();
            if (id == android.R.id.home) {
                startActivity(new Intent(getActivity(), SettingsActivity.class));
                return true;
            }
            return super.onOptionsItemSelected(item);
        }
    }
}

Some code has been left out of the activity for brevity. The key components here are 'onAttachedFragment', 'onPostCreate', and that the 'GeneralPreferenceFragment' now extends the custom 'AppCompatPreferenceFragment' instead of PreferenceFragment.

Code Summary: If a fragment is present, the fragment injects the new layout and calls the modified 'setSupportActionBar' function. If the fragment is not present, SettingsActivity injects the new layout on 'onPostCreate'

Now on to the XML(very simple):

activity_settings.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <include
        layout="@layout/app_bar_settings"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

</LinearLayout>

app_bar_settings.xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/content_frame"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".SettingsActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.NoActionBar.AppBarOverlay">

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar_settings"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.NoActionBar.PopupOverlay" />

    </android.support.design.widget.AppBarLayout>

    <include layout="@layout/content_settings" />

</android.support.design.widget.CoordinatorLayout>

content_settings.xml:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/content"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context=".SettingsActivity"
    tools:showIn="@layout/app_bar_settings">

    <ListView
        android:id="@android:id/list"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</RelativeLayout>

End Result:

Answer 8

回答by Bryan

I have a new (possibly neater) solution, that uses the AppCompatPreferenceActivityfrom the Support v7 samples. With this code in hand I created my own layout that includes a toolbar:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent" android:layout_height="match_parent"
    android:fitsSystemWindows="true" tools:context="edu.adelphi.Adelphi.ui.activity.MainActivity">

    <android.support.design.widget.AppBarLayout android:id="@+id/appbar"
        android:layout_width="match_parent" android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.v7.widget.Toolbar android:id="@+id/toolbar"
            android:layout_width="match_parent" android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary" app:popupTheme="@style/AppTheme.PopupOverlay"/>

    </android.support.design.widget.AppBarLayout>

    <FrameLayout android:id="@+id/content"
        android:layout_width="match_parent" android:layout_height="match_parent"/>

</android.support.design.widget.CoordinatorLayout>

Then, in my AppCompatPreferenceActivity, I altered setContentViewto create a my new layout, and place the provided layout inside my FrameLayout:

@Override
public void setContentView(@LayoutRes int layoutResID) {
    View view = getLayoutInflater().inflate(R.layout.toolbar, null);
    FrameLayout content = (FrameLayout) view.findViewById(R.id.content);
    getLayoutInflater().inflate(layoutResID, content, true);
    setContentView(view);
}

Then I just extend AppCompatPreferenceActivity, allowing me to call setSupportActionBar((Toolbar) findViewById(R.id.toolbar)), and inflate menu items in the toolbar as well. All while keeping the benefits of a PreferenceActivity.

Answer 9

回答by Samuel

Let's keep it simple & clean here, without breaking any in-built layout

import android.support.design.widget.AppBarLayout;
import android.support.v4.app.NavUtils;
import android.support.v7.widget.Toolbar;

private void setupActionBar() {
    Toolbar toolbar = new Toolbar(this);

    AppBarLayout appBarLayout = new AppBarLayout(this);
    appBarLayout.addView(toolbar);

    final ViewGroup root = (ViewGroup) findViewById(android.R.id.content);
    final ViewGroup window = (ViewGroup) root.getChildAt(0);
    window.addView(appBarLayout, 0);

    setSupportActionBar(toolbar);

    // Show the Up button in the action bar.
    getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    toolbar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            onBackPressed();
        }
    });
}

Answer 10

回答by Apurva

I found this simple solution while working on this. First we need to create a layout for settings activity.

activity_settings.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.my.package">

    <android.support.v7.widget.Toolbar
        android:id="@+id/tool_bar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
        app:elevation="@dimen/appbar_elevation"
        app:navigationIcon="?attr/homeAsUpIndicator"
        app:navigationContentDescription="@string/abc_action_bar_up_description"
        app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />

    <ListView
        android:id="@android:id/list"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tool_bar" />

</RelativeLayout>

Make sure you add a list view with android:id="@android:id/list", otherwise it will throw NullPointerException

Next step is to add (Override) onCreatemethod in your settings activity

Settings.java

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_settings);
    Toolbar toolbar = (Toolbar) findViewById(R.id.tool_bar);
    toolbar.setTitle(R.string.action_settings);
    toolbar.setNavigationOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            finish();
        }
    });
}

Make sure you import android.suppoer.v7.widget.Toolbar. This should work pretty much on all APIs above 16 (Jelly Bean and up)

Android Creating a Preference Screen with support (v21) Toolbar

提问by James Cross

采纳答案by James Cross

回答by David Passmore

UPDATE (Gingerbread Compatibility) :

UPDATE (Gingerbread Compatibility) :

FIX:

FIX:

AppCompat 22.1

AppCompat 22.1

Toolbar Shadow

Toolbar Shadow

Android 6.0

Android 6.0

回答by Gábor

回答by Sven Dubbeld

回答by MrBrightside

回答by midhunhk

回答by SilverX

回答by Bryan

回答by Samuel

回答by Apurva

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Android Creating a Preference Screen with support (v21) Toolbar

提问by James Cross

采纳答案by James Cross

回答by David Passmore

UPDATE (Gingerbread Compatibility) :

UPDATE (Gingerbread Compatibility) :

FIX:

FIX:

AppCompat 22.1

AppCompat 22.1

Toolbar Shadow

Toolbar Shadow

Android 6.0

Android 6.0

回答by Gábor

回答by Sven Dubbeld

回答by MrBrightside

回答by midhunhk

回答by SilverX

回答by Bryan

回答by Samuel

回答by Apurva

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