Question

我在我的活动中添加了独立的工具栏，它显示但是没有显示我为它定义的颜色。我正在使用的代码有什么问题？

以下是我正在使用的代码。

activity_categories.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical"
    android:weightSum="10"
    android:background="#D32F2F"
    tools:context="com.example.knowledgeup.LoginActivity" >

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_height="0dp"
        android:layout_width="match_parent"
        android:layout_weight="1"
        android:elevation="4dp"
        style="@style/ToolbarTheme" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:orientation="vertical"
        android:layout_weight="8" >

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

    </LinearLayout>   

</LinearLayout>

这是我如何将它添加到我在java文件中的活动

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_categories);

     mToolbar = (Toolbar)findViewById( R.id.toolbar );
     mToolbar.setTitle(R.string.title_activity_categories);

}

这是我的styles.xml

<resources>

    <!--
        Base application theme, dependent on API level. This theme is replaced
        by AppBaseTheme from res/values-vXX/styles.xml on newer devices.
    -->
    <style name="AppBaseTheme" parent="Theme.AppCompat.Light">
        <!--
            Theme customizations available in newer API levels can go in
            res/values-vXX/styles.xml, while customizations related to
            backward-compatibility can go here.
        -->
    </style>

    <!-- Application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
        <item name="android:windowNoTitle">true</item>
        <item name="windowActionBar">false</item>
    </style>

    <style name="ToolbarTheme" parent="Theme.AppCompat">
        <item name="colorPrimary">@color/material_blue_grey_900</item>
        <item name="colorPrimaryDark">@color/color_toolbar</item>
    </style>
</resources>

这是它的表现方式

Answer 1

试试这个

    <android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_height="0dp"
    android:layout_width="match_parent"
    android:layout_weight="1"
    android:elevation="4dp"
    android:background = "@color/color_toolbar"
    style="@style/ToolbarTheme" />

在activity_categories.xml

中

或在styles.xml

中

    <style name="ToolbarTheme" parent="Theme.AppCompat">
    <item name="colorPrimary">@color/material_blue_grey_900</item>
    <item name="colorPrimaryDark">@color/color_toolbar</item>
    <item name="android:background">@color/color_toolbar</item>
</style>

Answer 2

使用以下属性更改工具栏颜色。

 public class MyActivity extends FragmentActivity implements AdapterView.OnItemClickListener{

    ViewPager viewPager = null;
    int mSelectedItemPosition;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.fragment_fail_activity);

        viewPager = (ViewPager) findViewById(R.id.fail_pager_VP);
        viewPager.setAdapter(new pagerAdapter(getSupportFragmentManager()));
    }

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        mSelectedItemPosition = position;
        viewPager.setCurrentItem(1);
        FragmentStatePagerAdapter fspa = (FragmentStatePagerAdapter) viewPager.getAdapter();
        Fragment_B item = (Fragment_B) fspa.getItem(1);
        item.setData(position);
        item.refresh();
    }
}


    class pagerAdapter extends FragmentStatePagerAdapter {

    public pagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {
        Fragment fragment = null;
        if (position == 0) {
            fragment = new Fragment_A();
        } else if (position == 1) {
            fragment = new Fragment_B();
        }
        return fragment;
    }


    @Override
    public int getCount() {
        return 2;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        String title = "";
        if (position == 0) {
            return "a_title";
        }else if (position == 1) {
            return "b_title";
        }
    }
}

    public class Fragment_A extends android.support.v4.app.Fragment {

private ListView frag_a_listView;
DataAdapter dataAdapter;

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

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);
    ListView frag_a_listView = (ListView) getActivity().findViewById(R.id.frag_a_LV);
    frag_a_listView.setOnItemClickListener((AdapterView.OnItemClickListener) getActivity());
}

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View layout = inflater.inflate(R.layout.fragment_fail_main, container, false);
    frag_a_listView = (ListView) layout.findViewById(R.id.frag_a_LV);

    dataAdapter = new DataAdapter(getActivity(),
            R.layout.data_row,
            R.id.data_label_TV,
            getFrag_aData());
    frag_a_listView.setAdapter(dataAdapter);
    return layout;
}

private List<String> getFrag_aData() {
    ...
    return someData;
}

Answer 3

您只需在工具栏中设置背景。

egCode Snippet

<android.support.v7.widget.Toolbar
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/action_bar_bg"
    android:elevation="@dimen/elevation_button_default"
    android:theme="@style/ThemeOverlay.AppCompat.Dark" />

ToolBar颜色在android中没有变化

3 个答案: