Activity does not have a parent activity name specified.

如上图所示：当点击红框中的箭头，调用系统方法NavUtile.navigateUpFromSameTask(this); APP直接崩溃

错误信息：

Activity SubActivity does not have a parent activity name specified. (Did you forget to add the android.support.PARENT_ACTIVITY <meta-data>  element in your manifest?)

错误原因：

SubActivity并不知道它所需要返回的父Activity是谁

修改方法：

在AndroidManifest.xml文件中添加SubActivity的<meta-data>标签，并指定父Activity，代码如下：

<activity android:name=".SubActivity"
            android:label="@string/SubActivity">
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value=".MainActivity"/>
        </activity>