android:parentActivityName虽然包含android-support-v4.jar但不起作用

Question

我已经包含了android-support-v4.jar库来使用"android:parentActivityName ="com.myApp.example.MainActivity".它包含在"Android"依赖关系"和"引用的库"中,但它仍然没有工作 - >

错误:在'android'包中找不到属性'parentActivityName'的资源标识符

有什么建议？

    <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.myApp.example"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="17" />

    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <uses-feature android:name="android.hardware.location.network" />
    <uses-feature android:name="android.hardware.location.gps" />
    <uses-feature android:name="android.hardware.wifi" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >

        <activity
            android:name="com.myApp.example.MainActivity"
            android:configChanges="keyboardHidden|orientation|screenSize"
            android:label="@string/app_name"
            android:uiOptions="splitActionBarWhenNarrow" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <action android:name="android.intent.action.SEARCH" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <activity
            android:name="com.myApp.example.AboutUsActivity"
            android:configChanges="keyboardHidden|orientation|screenSize"
            android:label="@string/AboutUs" 
            android:parentActivityName="com.myApp.example.MainActivity" >
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value="com.myApp.example.MainActivity" />
        </activity>

    </application>

</manifest>

Answer 1

正如@iargin所说

android:parentActivityName在API 16中引入

这是真的,并且针对api 16级构建工作正常,但是从官方文档中,等效的是使用 meta-data标记

    <activity
        android:name="com.dwaik.actionbar.LocationFound"
        android:label="@string/loc">
        <meta-data
            android:name="android.support.PARENT_ACTIVITY"
            android:value="com.dwaik.actionbar.MainActivity" />
    </activity>

它适用于api级别15

Answer 2

该属性android:parentActivityName在API 16中引入.将项目的构建目标设置为Android 4.1,然后您可以在具有API级别14(您声明最小sdk级别为14)或更高级别的设备上运行您的应用程序(如果包含android支持库)在项目的构建路径中.

Answer 3

您需要添加每个活动子项

        <application ... >
...
<!-- The main/home activity (has no parent activity) -->
<activity
    android:name="com.example.myfirstapp.MainActivity" ...>
    ...
</activity>
<!-- A child of the main activity -->
<activity
    android:name="com.example.myfirstapp.DisplayMessageActivity"
    android:label="@string/title_activity_display_message"
    android:parentActivityName="com.example.myfirstapp.MainActivity" >
    <!-- Parent activity meta-data to support API level 7+ -->
    <meta-data
        android:name="android.support.PARENT_ACTIVITY"
        android:value="com.example.myfirstapp.MainActivity" />
</activity>

http://developer.android.com/guide/topics/ui/actionbar.html