我有四个Spinner，它有一个带有下拉列表的自定义背景。单击第三个和第四个微调器时，其显示在微调器上方的列表不会向下旋转微调器。我的屏幕也有很多空间，但我不知道如何解决这个问题。 我使用下面的布局来显示微调器。
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/background_screen"
android:orientation="vertical" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none" >
<LinearLayout
android:id="@+id/solarparent"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginTop="5dp"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:weightSum="2" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.7"
android:text="Full Name"
android:textColor="@android:color/black"
android:textSize="@dimen/cippa_font" />
<EditText
android:id="@+id/nameTxtView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:digits="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
android:ems="10"
android:singleLine="true"
android:textSize="@dimen/cippa_font" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:text="16"
android:visibility="gone" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:weightSum="2" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.7"
android:text="System Size (kW)"
android:textColor="@android:color/black"
android:textSize="@dimen/cippa_font" />
<EditText
android:id="@+id/ppaSystemSizeEditView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:ems="10"
android:inputType="numberDecimal"
android:textSize="@dimen/cippa_font" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:text="kW"
android:visibility="gone" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:paddingTop="10dp"
android:visibility="visible"
android:weightSum="2" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="0.7"
android:gravity="center_vertical"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Annual Production"
android:textColor="@android:color/black"
android:textSize="@dimen/cippa_font" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/annualLayout"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:layout_gravity="center_vertical"
android:layout_weight="1.3"
android:background="@drawable/spinner_bg"
android:gravity="center_vertical" >
<TextView
android:id="@+id/annualTxyView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="5dp"
android:hint="Select"
android:singleLine="true"
android:textColor="#000000"
android:textColorHint="#000000"
android:textSize="@dimen/cippa_font" />
</RelativeLayout>
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:text="kWh/kW/yr"
android:visibility="gone" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:paddingTop="10dp"
android:visibility="visible"
android:weightSum="2" >
<TextView
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="0.7"
android:gravity="center_vertical"
android:text="PPA Term (Years)"
android:textColor="@android:color/black"
android:textSize="@dimen/cippa_font" />
<Spinner
android:id="@+id/ppaSpiner"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.3"
android:background="@drawable/spinner_bg"
android:prompt="@string/spinner_title"
android:textSize="@dimen/cippa_font" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:text="Years"
android:visibility="gone" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:paddingTop="10dp"
android:visibility="visible"
android:weightSum="2" >
<TextView
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="0.7"
android:gravity="center_vertical"
android:text="PPA Escalation Rate (%)"
android:textColor="@android:color/black"
android:textSize="@dimen/cippa_font" />
<Spinner
android:id="@+id/escalationSpiner"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.3"
android:background="@drawable/spinner_bg"
android:prompt="@string/spinner_title" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:text="%"
android:visibility="gone" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_gravity="center_vertical"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:paddingTop="10dp"
android:weightSum="2" >
<TextView
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="0.7"
android:gravity="center_vertical"
android:text="PPA Cap (\u20B9/kWH)"
android:textColor="@android:color/black"
android:textSize="@dimen/cippa_font" />
<Spinner
android:id="@+id/ppaCapSpiner"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.3"
android:background="@drawable/spinner_bg"
android:textSize="@dimen/cippa_font" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:text="/kWH"
android:visibility="gone" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="50dp"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:paddingTop="10dp"
android:weightSum="2" >
<TextView
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="0.7"
android:gravity="center_vertical"
android:text="Customer Deposit Tenure (Months)"
android:textColor="@android:color/black"
android:textSize="@dimen/cippa_font" />
<Spinner
android:id="@+id/ppaDepositSpiner"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.3"
android:background="@drawable/spinner_bg"
android:prompt="@string/spinner_title" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:text="Months"
android:visibility="gone" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:paddingTop="10dp"
android:weightSum="2" >
<TextView
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_weight="0.7"
android:gravity="center_vertical"
android:text="Special Requirements"
android:textColor="@android:color/black"
android:textSize="@dimen/cippa_font" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1.3"
android:orientation="vertical" >
<RelativeLayout
android:id="@+id/requelayout"
android:layout_width="fill_parent"
android:layout_height="40dp"
android:layout_gravity="center_vertical"
android:background="@drawable/spinner_bg"
android:gravity="center_vertical" >
<TextView
android:id="@+id/spclDialogTxtView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="4dp"
android:text="Select"
android:textColor="#000000"
android:textSize="@dimen/cippa_font" />
</RelativeLayout>
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:text="16"
android:visibility="gone" />
</LinearLayout>
<Button
android:id="@+id/but_calculate"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="18dp"
android:background="@drawable/login_btn_selector"
android:text="Calculate"
android:textColor="@android:color/white"
android:textSize="@dimen/cippa_font" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:orientation="horizontal"
android:paddingLeft="3dp"
android:paddingRight="3dp"
android:paddingTop="10dp"
android:weightSum="2" >
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="0.7"
android:text="PPA Year 1 Rate (\u20B9/kWH)"
android:textColor="@android:color/black"
android:textSize="@dimen/cippa_font" />
<TextView
android:id="@+id/ppayearrate"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_weight="1.3"
android:textSize="@dimen/cippa_font" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1.3"
android:text="16"
android:visibility="gone" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="20dp"
android:gravity="center"
android:orientation="horizontal"
android:padding="3dp"
android:weightSum="2" >
<Button
android:id="@+id/but_cal_saving"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginRight="3dp"
android:layout_weight="1"
android:background="@drawable/login_btn_selector"
android:text="Calculate Savings"
android:textColor="@android:color/white"
android:textSize="@dimen/cippa_font" />
<Button
android:id="@+id/but_Home"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="@drawable/login_btn_selector"
android:text="Home"
android:textColor="@android:color/white"
android:textSize="@dimen/cippa_font" />
</LinearLayout>
</LinearLayout>
</ScrollView>
</RelativeLayout>
and below is my spinner.bg for Spinner background :
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item><layer-list>
<item><shape>
<gradient android:angle="90" android:endColor="#ffffff" android:startColor="#ffffff" android:type="linear" />
<stroke android:width="0.5dp" android:color="#504a4b" />
<corners android:radius="5dp" />
<padding android:bottom="3dp" android:left="3dp" android:right="3dp" android:top="3dp" />
</shape></item>
<item><bitmap android:gravity="center_vertical|right" android:src="@drawable/dropdown_spinner" />
</item>
</layer-list></item>
</selector>