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试图做一个移动应用程序。但当程序在手机上运行时，图片不会显示在手机上。并且scrollview不滚动。您的帮助将受到高度赞赏。非常感谢您的宝贵时间。图片不显示，ScrollView不滚动在Android中
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_car_matcher"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:paddingBottom="0dp"
android:paddingLeft="0dp"
android:paddingRight="0dp"
android:paddingTop="0dp"
android:fillViewport="true"
tools:context="ph.com.steamrise.goodrides.CarMatcherActivity"
android:background="@drawable/carmatcher">
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="140dp">
<ImageView
android:layout_width="match_parent"
android:layout_height="140dp"
app:srcCompat="@drawable/header"
android:id="@+id/imageView"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#80ffffff"
android:orientation="vertical"
>
<TextView
android:text="1. What's your ideal vacation?"
android:layout_width="190dp"
android:layout_height="wrap_content"
android:textColor="#FF000000"/>
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<RadioButton
android:text="Climbing the rocky mountains"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton11"
android:layout_weight="1"
android:textSize="12dp"/>
<RadioButton
android:text="Road trip at the city with family"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton12"
android:textSize="12dp"/>
<RadioButton
android:text="Enjoying the view on top of the mountain with friends"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton13"
android:textSize="12dp"/>
<RadioButton
android:text="Explore random places alone or with my partner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton14"
android:textSize="12dp"/>
</RadioGroup>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#80FFFFFF">
<TextView
android:text="2. How would you describe your style?"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:textColor="#FF000000"/>
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<RadioButton
android:text="Sporty"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton15"
android:layout_weight="1"
android:textSize="12dp"/>
<RadioButton
android:text="Casual"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton16"
android:textSize="12dp"/>
<RadioButton
android:text="Elegant"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton17"
android:textSize="12dp"/>
<RadioButton
android:text="Free-spirited"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton18"
android:textSize="12dp"/>
</RadioGroup>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:background="#80FFFFFF">
<TextView
android:text="2. How are you with money?"
android:layout_width="250dp"
android:layout_height="wrap_content"
android:textColor="#FF000000"/>
<RadioGroup
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<RadioButton
android:text="Really Careful- I prefer cheap stuff as long is it is usable"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton19"
android:layout_weight="1"
android:textSize="12dp"/>
<RadioButton
android:text="I'm saving every penny and cutting corners where I can. Wait.. are you going to throw that empty can out? "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton20"
android:textSize="12dp"/>
<RadioButton
android:text="I’m more of a “spend now, regret later” person. What’s the point of having money if you’re not going to spend it? "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton21"
android:textSize="12dp"/>
<RadioButton
android:text="d) I’m a little risky with my money. I love playing stock market- and don’t worry, those pumpkin stocks will go up any time now"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/radioButton22"
android:textSize="12dp"/>
</RadioGroup>
</LinearLayout>
</LinearLayout>