问当包含ImageView和TextView时，安卓布局不可点击

EN

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal">

    <LinearLayout
        android:id="@+id/tab_dashboard"
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:background="@android:color/white"
        android:gravity="center"
        android:orientation="vertical">

        <ImageButton
            android:id="@+id/dashboard_button"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:background="@android:color/white"
            android:src="@drawable/ic_dashboard" />

        <TextView
            android:id="@+id/dashboard_text"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:gravity="center_horizontal"
            android:text="@string/dashboard"
            android:textSize="10sp" />

    </LinearLayout>

    <!-- Four more similar tabs -->

</LinearLayout