android scrollview隱藏頂級內容

Question

我遇到了使用ScrollView的麻煩。出於某種奇怪的原因，它隱藏了要顯示在頂部的內容。我試圖給邊際，填充等，但似乎沒有工作。這是我的佈局：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" android:layout_height="fill_parent" 
    android:orientation="vertical" android:background="@drawable/background"> 
    <LinearLayout android:layout_width="fill_parent" 
     android:layout_height="wrap_content" android:background="@drawable/titlebar" 
     android:id="@+id/titlebar"> 
     <TextView android:layout_width="fill_parent" android:id="@+id/textView1" 
      android:layout_height="fill_parent" android:layout_gravity="center" 
      android:gravity="center" android:textColor="@color/white" 
      android:textSize="20dip" android:text="Help"></TextView> 
    </LinearLayout> 
    <ScrollView android:layout_height="wrap_content" android:id="@+id/scrollView1" 
     android:layout_width="fill_parent"> 
     <LinearLayout android:orientation="vertical" android:id="@+id/linearLayout2" 
      android:gravity="center" android:layout_width="fill_parent" 
      android:layout_gravity="center" android:layout_height="fill_parent" 
      android:paddingLeft="10dip" android:paddingRight="5dip"> 
      <ImageView android:layout_height="wrap_content" 
       android:src="@drawable/icon" android:layout_marginTop="10dip" 
       android:id="@+id/help_icon" android:layout_width="fill_parent" 
       android:layout_marginBottom="15dip"></ImageView> 
      <TextView android:layout_height="wrap_content" 
       android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed dapibus venenatis suscipit.\n\nCras lacus sem, cursus a dictum sed, condimentum quis urna. Ut vel metus lorem, quis semper lacus. Suspendisse eu urna massa, a blandit mi. " 
       android:id="@+id/help_text" android:layout_width="wrap_content" 
       android:textColor="@color/black" android:textSize="15dip" 
       android:paddingBottom="10dip"></TextView> 
     </LinearLayout> 
    </ScrollView> 
</LinearLayout> 

我的形象得到隱藏在頂部標題欄，只有其底部的一小部分的背後，是在設備/模擬器可見。在Eclipse中看起來很好。我正在使用ADT11

在此先感謝！

Answer 1

我想你想是這樣的：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="fill_parent" android:layout_height="fill_parent" 
    android:orientation="vertical"> 
    <LinearLayout android:layout_width="fill_parent" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" 
     android:id="@+id/titlebar"> 
     <TextView android:layout_width="fill_parent" android:id="@+id/textView1" 
      android:layout_height="wrap_content" android:layout_gravity="center" 
      android:gravity="center" android:textColor="@android:color/white" 
      android:textSize="20dip" android:text="Help"></TextView> 

       <ImageView android:layout_height="wrap_content" 
       android:src="@drawable/icon" android:layout_marginTop="10dip" 
       android:id="@+id/help_icon" android:layout_width="fill_parent" 
       android:layout_marginBottom="15dip"></ImageView> 
    </LinearLayout> 
    <ScrollView android:layout_height="match_parent" android:id="@+id/scrollView1" 
     android:layout_width="fill_parent"> 
     <LinearLayout android:orientation="vertical" android:id="@+id/linearLayout2" 
      android:gravity="center" android:layout_width="fill_parent" 
      android:layout_height="fill_parent" 
      android:paddingLeft="10dip" android:paddingRight="5dip"> 

      <TextView android:layout_height="wrap_content" 
       android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed dapibus venenatis suscipit.\n\nCras lacus sem, cursus a dictum sed, condimentum quis urna. Ut vel metus lorem, quis semper lacus. Suspendisse eu urna massa, a blandit mi. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed dapibus venenatis suscipit.\n\nCras lacus sem, cursus a dictum sed, condimentum quis urna. Ut vel metus lorem, quis semper lacus. Suspendisse eu urna massa, a blandit mi.Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed dapibus venenatis suscipit.\n\nCras lacus sem, cursus a dictum sed, condimentum quis urna. Ut vel metus lorem, quis semper lacus. Suspendisse eu urna massa, a blandit mi.Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed dapibus venenatis suscipit.\n\nCras lacus sem, cursus a dictum sed, condimentum quis urna. Ut vel metus lorem, quis semper lacus. Suspendisse eu urna massa, a blandit mi.Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed dapibus venenatis suscipit.\n\nCras lacus sem, cursus a dictum sed, condimentum quis urna. Ut vel metus lorem, quis semper lacus. Suspendisse eu urna massa, a blandit mi.Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed dapibus venenatis suscipit.\n\nCras lacus sem, cursus a dictum sed, condimentum quis urna. Ut vel metus lorem, quis semper lacus. Suspendisse eu urna massa, a blandit mi." 
       android:id="@+id/help_text" android:layout_width="wrap_content" 
       android:textColor="@android:color/white" android:textSize="15sp" 
       android:paddingBottom="10dip"></TextView> 
     </LinearLayout> 
    </ScrollView> 
</LinearLayout> 

Answer 2

添加機器人：layout_weight = 「1」 到你的滾動視圖。它將解決問題。這樣

<ScrollView 
     android:id="@+id/scroll" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" android:layout_weight="1" > 

Answer 3

嗨東西，我有同樣的問題，並調查後我已經找到了解決方案，並在你的XML代碼我可以看到你在做佈局了同樣的錯誤。

問題是，您將ScrollView子（LinearLayout）layout_gravity設置爲居中。刪除這一行，它應該爲你工作。

android:layout_gravity="center" //remove this