使用支持创建首选项屏幕(v21)工具栏

Question

我在"首选项"屏幕上的支持库中使用新的"材质设计"工具栏时遇到问题.

我有一个settings.xml文件,如下所示:

<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>

字符串在别处定义.

Answer 1

请找到GitHub回购:这里

派对有点晚了,但这是我用来继续使用的解决方案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 :

更新(姜饼兼容性):

根据评论,Gingerbread Devices在此行返回NullPointerException:

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

固定:

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();
            }
        });
    }
}

以上任何问题都让我知道!

更新2:着色解决方法

正如许多开发人员指出的PreferenceActivity那样,不支持对元素进行着色,但是通过使用一些内部类,您可以实现这一点.直到这些类被删除.(使用appCompat support-v7 v21.0.3工作).

添加以下导入:

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;

然后覆盖onCreateView方法:

@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:

AppCompat 22.1

AppCompat 22.1引入了新的有色元素,这意味着不再需要利用内部类来实现与上次更新相同的效果.而是遵循这个(仍然重写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;
}

嵌套的首选屏幕

很多人都遇到了嵌套工具栏的问题,<PreferenceScreen />但是我找到了解决方案! - 经过大量的反复试验!

将以下内容添加到您的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();
        }
    });
}

之所以PreferenceScreen如此痛苦,是因为它们基于包装器对话框,因此我们需要捕获对话框布局以向其添加工具栏.

工具栏阴影

通过设计导入Toolbar不允许在v21之前的设备中进行提升和阴影,所以如果你想要提升Toolbar你需要将它包装在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>

不要忘记添加设计支持库作为build.gradle文件中的依赖项:

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

我已经调查了报告的重叠问题,我无法重现这个问题.

上面使用的完整代码产生以下内容:

如果我遗失了什么,请通过此回购告诉我,我会调查.

Answer 2

您可以使用a PreferenceFragment作为替代PreferenceActivity.所以,这是包装Activity示例:

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();
    }
}

这是布局文件(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>

最后PreferenceFragment:

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

我希望这可以帮助别人.

Answer 3

全新的更新.

通过一些实验,我似乎找到了适用于嵌套首选项屏幕的AppCompat 22.1+解决方案.

首先,正如许多答案中提到的(包括这里的一个),你需要使用新的答案AppCompatDelegate.使用AppCompatPreferenceActivity.java支持演示中的文件(https://android.googlesource.com/platform/development/+/58bf5b99e6132332afb8b44b4c8cedf5756ad464/samples/Support7Demos/src/com/example/android/supportv7/app/AppCompatPreferenceActivity.java)并简单地扩展从中,或将相关功能复制到您自己的PreferenceActivity.我将在这里展示第一种方法:

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);
  }
}

随附的布局相当简单和通常(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>

首选项本身定义为通常(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>

到目前为止,网上的解决方案没有真正的区别.实际上,即使您没有嵌套屏幕,没有标题,只有一个屏幕,您也可以使用它.

我们PreferenceFragment对所有较深的页面使用公共,通过extra标题中的参数进行区分.每个页面都有一个单独的XML,PreferenceScreen内部有一个共同的(xml/settings_page1.xml等等).片段使用与活动相同的布局,包括工具栏.

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);
    }
  }
}

最后,快速总结一下这实际上是如何工作的.新的AppCompatDelegate允许我们使用AppCompat功能的任何活动,而不仅仅是从AppCompat中实际活动延伸的活动.这意味着我们可以将旧的旧的PreferenceActivity变成新的并像往常一样添加工具栏.从那时起,我们可以坚持使用有关首选项屏幕和标题的旧解决方案,而不会偏离现有文档.只有一点很重要:不要onCreate()在活动中使用,因为它会导致错误.使用onBuildHeaders()像添加工具栏的所有操作.

唯一真正的区别在于,它与嵌套屏幕一起使用的原因是您可以对片段使用相同的方法.您可以使用onCreateView()相同的方式,膨胀您自己的布局而不是系统布局,添加工具栏的方式与活动中的方式相同.

Answer 4

如果要使用PreferenceHeaders,可以使用以下方法:

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

}

布局/ 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>

您可以在此处使用您喜欢的任何布局,只需确保在Java代码中进行调整即可.

最后,你的文件带头文件(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

随着Android支持库22.1.0和新的AppCompatDelegate的发布,您可以在这里找到PreferenceActivity实现的一个很好的示例,其中包含具有向后兼容性的材料支持.

更新 它也适用于嵌套屏幕.

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

Answer 6

虽然上面的答案看起来很复杂,如果你想要一个快速修复解决方案来使用支持API 7的工具栏,并且一直在扩展PreferenceActivity,我从下面的这个项目得到了帮助.

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

我也一直在寻找将v7支持工具栏(API 25)添加到AppCompatPreferenceActivity(在添加SettingsActivity时由AndroidStudio自动创建)的解决方案.在阅读了几个解决方案并尝试了每个解决方案之后,我努力将生成的PreferenceFragment示例也显示在工具栏中.

一种有效的改进解决方案来自" Gabor ".

我遇到的一个警告是"onBuildHeaders"只发射一次.如果您将设备(如手机)侧向翻转,则视图会重新创建,并且PreferenceActivity将再次保留而不会再显示工具栏,但PreferenceFragments会保留它们.

我尝试使用'onPostCreate'来调用'setContentView',虽然这可以在方向更改时重新创建工具栏,然后PreferenceFragments将呈现为空白.

我提出的内容充分利用了我能读到的关于这个主题的每一个提示和答案.我希望其他人也觉得它很有用.

我们将从Java开始

第一个(生成的)AppCompatPreferenceActivity.java我修改了'setSupportActionBar',如下所示:

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

其次,我创建了一个名为AppCompatPreferenceFragment.java的新类(它当前是一个未使用的名称,尽管它可能不会这样!):

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);
    }
}

这是Gabor答案的一部分.

最后,为了获得一致性,我们需要对SettingsActivity.java进行一些更改:

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);
        }
    }
}

为简洁起见,一些代码已被排除在活动之外.这里的关键组件是' onAttachedFragment ',' onPostCreate ','GeneralPreferenceFragment'现在扩展了自定义' AppCompatPreferenceFragment '而不是PreferenceFragment.

代码摘要:如果存在片段,片段将注入新布局并调用修改后的"setSupportActionBar"函数.如果片段不存在,则SettingsActivity在'onPostCreate'上注入新布局

现在开始使用XML(非常简单):

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>

最终结果:

Answer 8

我有一个新的(可能更整洁的)解决方案,它使用AppCompatPreferenceActivity了支持v7样本.有了这个代码,我创建了自己的布局,其中包括一个工具栏:

<?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>

然后,在我AppCompatPreferenceActivity,我改变setContentView了创建我的新布局,并将提供的布局放在我的内部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);
}

然后我只是扩展AppCompatPreferenceActivity,允许我调用setSupportActionBar((Toolbar) findViewById(R.id.toolbar)),并在工具栏中膨胀菜单项.同时保持一个好处PreferenceActivity.

Answer 9

让我们在这里保持简单和干净,不破坏任何内置布局

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();
        }
    });
}