基本上，我创建了一个单独的xml，其中包含一个线性布局，其中包含一个图像和一个textview，我需要在另一个线性布局中使用这个线性布局，我需要将我的第一个线性布局动态添加到第二个线性布局中。
第一个线性布局，一个单独的xml文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:id="@+id/storeLocation"
        android:layout_width="@dimen/settings_item_width"
        android:layout_height="@dimen/settings_item_height"
        android:layout_marginBottom="10dp"
        android:visibility="@integer/sales_order_settings_visibility"
        style="@style/dashboard_btn"
        android:onClick="onStoreLocationClick"
        android:clickable="true"
        android:orientation="horizontal">

        <LinearLayout
            android:layout_width="@dimen/settings_item_image_container_width"
            android:layout_height="match_parent"
            android:gravity="center">

            <ImageView
                android:layout_width="@dimen/setting_item_image_size"
                android:layout_height="@dimen/setting_item_image_size"
                android:tint="@color/cherry_red_without_opacity"
                android:src="@drawable/ic_location_icon" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:paddingRight="40dp"
            android:gravity="center|left">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Store Location"
                android:textColor="@color/white"
                android:textSize="@dimen/top_section_purchase_id_font" />

        </LinearLayout>
    </LinearLayout>

</LinearLayout>

第二个线性布局，分离xml：

<LinearLayout
                            android:id="@+id/settingButtonHolder"
                            android:layout_width="match_parent"
                            android:layout_height="match_parent"
                            android:gravity="center"
                            android:orientation="vertical">
</LinearLayout>

android studio代码：

linearLayout = (LinearLayout) findViewById(R.id.settingButtonHolder);
            linearLayout2 = (LinearLayout) findViewById(R.id.storeLocation);
            linearLayout.addView(linearLayout2);

这不起作用，我得到一个空指针异常：

12-16 16:48:52.402 21571-21571/io.apptizer.business.clover E/AndroidRuntime: FATAL EXCEPTION: main
    Process: io.apptizer.business.clover, PID: 21571
    java.lang.RuntimeException: Unable to start activity ComponentInfo{io.apptizer.business.clover/io.apptizer.pos.activity.ApplicationSettingsActivity}: java.lang.NullPointerException
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
        at android.app.ActivityThread.access$800(ActivityThread.java:135)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:136)
        at android.app.ActivityThread.main(ActivityThread.java:5017)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:515)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
        at dalvik.system.NativeStart.main(Native Method)
     Caused by: java.lang.NullPointerException
        at android.view.ViewGroup.addView(ViewGroup.java:3353)
        at android.view.ViewGroup.addView(ViewGroup.java:3336)
        at io.apptizer.pos.activity.applicationSetting.ApplicationSettingsActivityCommon.onCreate(ApplicationSettingsActivityCommon.java:151)
        at io.apptizer.pos.activity.ApplicationSettingsActivity.onCreate(ApplicationSettingsActivity.java:78)
        at android.app.Activity.performCreate(Activity.java:5231)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)

有人能帮我一下吗，会很有帮助的。