带有"activatedBackgroundIndicator"的所选项目的自定义背景色；导航抽屉 [英] Custom background color for selected item with "activatedBackgroundIndicator" Navigation Drawer

问题描述

这个问题在SO上已经问了很多，我已经参考了所有答案.导航抽屉上的选定项目仍保留默认的Holo蓝色背景.我是Java新手，对.setAdapter()的上下文"部分感到困惑.
我的项目是一个单个活动，使用导航抽屉交换了多个片段.

This question has been asked a lot on SO, and I have referenced all the answers. I am still left with the default Holo blue background for selected items on my navigation drawer. I am new to Java and I am confused about the "context" part of .setAdapter().
My project is a single Activity with multiple fragments swapped using the nav drawer.

这是我的适配器:

mDrawerListView.setAdapter(new ArrayAdapter<String>(
            // First parameter - Context
            getActionBar().getThemedContext(),
            // Second parameter - Layout for the row
            R.layout.fragment_navigation_drawer_list_item,
            // Third parameter - ID of the TextView to which the data is written
            android.R.id.text1,
            // Forth - the Array of data
            new String[]{
                    getString(R.string.title_section1),
                    getString(R.string.title_section2),
                    getString(R.string.title_section3),
                    getString(R.string.title_section4),
            }));
    mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);

此处的上下文来自Android Studio中的预煮"导航抽屉.我认为这将是答案选定项目的导航抽屉项目背景颜色.因此，我将上下文更改为getActivity().getBaseContext(),，但这并没有任何改变.

The context here comes from the "pre-cooked" navigation drawer in Android Studio. I thought this would be the answer Navigation Drawer item background colour for selected item. So I changed my context to getActivity().getBaseContext(),, but that didn't change anything.

我的主题(styles.xml):

<resources>
    <style name="AppBaseTheme" parent="@style/Theme.AppCompat.Light.DarkActionBar">
        <!-- API 14 theme customizations can go here. -->
        <item name="android:actionBarStyle">@style/ActionBar</item>
    </style>

    <!-- Navigation Drawer styling -->
    <style name="NavDrawerItemSelected" parent="AppBaseTheme">
        <item name="android:activatedBackgroundIndicator">@drawable/activated_background</item>
    </style>
</resources>

activated_background在"drawables"目录中:

activated_background in 'drawables' dir:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_activated="true" android:drawable="@color/green" />
    <item android:state_selected="true" android:drawable="@color/green" />
    <item android:state_pressed="true" android:drawable="@color/green" />
    <item android:state_checked="true" android:drawable="@color/green" />        
    <item android:drawable="@android:color/transparent" />
</selector>

我不知道应该使用上述哪个状态，所以我添加了所有可以找到的状态.
最后，当一个项目被选中被调用.结果 一切正常，除了自定义主题样式. (最小API = 11，在API 17 AVD上进行测试)

I don't know which of those above states is supposed to be used, so I added all of them I could find.
Finally, when an item is selected mDrawerListView.setItemChecked(position, true); is called.
Everything works, except for the custom theme styling. (min API = 11, testing on API 17 AVD)

推荐答案

我遇到了这个确切的问题.问题在于R.layout.fragment_navigation_drawer_list_item的背景需要更改为可绘制对象.只需在布局中添加android:background="@drawable/activated_background".

I have run into this exact problem. The issue is that the background of R.layout.fragment_navigation_drawer_list_item is what needs to be changed to your drawable. Simply add android:background="@drawable/activated_background" to the layout.

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