无法显示在动作条图标 [英] Can't display an icon in the actionbar

问题描述

我试图表现出从官方Android开发源下载一个地图图标。

I'm trying to show a map icon downloaded from the official android developers source.

我做的一切都是理所应当，但图标将不会显示。 这里是我命名的XML文件 main_activity_bar ：

I did everything as it should, but the icon won't show. Here is my xml file named main_activity_bar:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >

    <item
        android:id="@+id/mapIcon"
        android:icon="@drawable/ic_action_map"
        android:title="@string/mapIconTitle"
        android:showAsAction="always"
     />

</menu>

下面是主要活动的xml：

Here is the main activity xml:

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.gs.testApp.MainActivity"
    tools:ignore="MergeRootFrame" />

这是我在java类：

and this is what I have in the java class:

@Override
    public boolean onCreateOptionsMenu(Menu menu) {
        MenuInflater actionMenue = getMenuInflater();
        actionMenue.inflate(R.menu.main_activity_bar, menu);
        return super.onCreateOptionsMenu(menu);
    }

一切似乎是美好的，但图标不会显示在模拟器上。下面是截图：

Everything seems to be fine, but the icon wont show on the emulator. Here is a screenshot:

最低版本为安卓3.0

The minimum version is android 3.0

为什么图标不显示？我在想什么？我知道，这是一些真正的小，但我无法发现它。

Why the icon is not showing? What Am I missing? I know that it is something really small, but I can't spot it.

推荐答案

下面是我如何固定它 - 如果有人正面临着同样的问题。

Here is how I fixed it - in case that someone is facing the same issue.

我改变了

安卓showAsAction =总是到应用程序：showAsAction =总是，我也放在图标为了安卓orderInCategory =0和自动资源的xmlns：程序=htt​​p://schemas.android.com/apk/res-自动所以现在我的XML如下：

android:showAsAction="always" to app:showAsAction="always" and I also placed the icon order android:orderInCategory="0" and the auto res xmlns:app="http://schemas.android.com/apk/res-auto" so now my xml looks like:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" 
      xmlns:app="http://schemas.android.com/apk/res-auto">

    <item
        android:orderInCategory="0"
        android:id="@+id/mapIcon"
        android:icon="@drawable/ic_action_map"
        android:title="@string/mapIconTitle"
        app:showAsAction="always"
     />

</menu>

这篇关于无法显示在动作条图标的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！