[英]How to center a RatingBar in Android
I have created a custom RatingBar as described in one of the tutorials given here on stack-overflow and it's looking great, the problem is with the centering of the image.我已经创建了一个自定义 RatingBar,如此处给出的关于堆栈溢出的教程之一所述,它看起来很棒,问题在于图像的居中。 here is what I've got:这是我所拥有的:
As you can see the TextView is centered vertically in the LinearLayout, but the RatingBar is at the top of it.如您所见,TextView 在 LinearLayout 中垂直居中,但 RatingBar 位于其顶部。 Here is my xml code of this image:这是我的这张图片的xml代码:
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/scrollView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:foregroundGravity="center" >
<LinearLayout
android:layout_width="320dp"
android:layout_height="match_parent"
android:gravity="center" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
<RatingBar
android:id="@+id/ratingBar1"
style="@style/starsRatingBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:numStars="5"
android:rating="2.3"
android:stepSize="1" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:src="@drawable/ic_launcher" />
</LinearLayout>
</ScrollView>
Here is the code of the styling:这是样式的代码:
<style name="starsRatingBar" parent="@android:style/Widget.RatingBar">
<item name="android:progressDrawable">@drawable/star_ratingbar_full</item>
<item name="android:minHeight">36dip</item>
<item name="android:maxHeight">36dip</item>
</style>
Any ideas in the RatingBar would be apprisiated! RatingBar 中的任何想法都会得到认可!
THANKS谢谢
Ok, I think I've got it.好的,我想我明白了。
The key issue is the ScrollView
: it automatically makes things compact, unless you specifically tell it otherwise.关键问题是ScrollView
:它会自动使事情变得紧凑,除非您另外特别说明。 In the scroll view, set在滚动视图中,设置
android:fillViewport="true"
to make it use the space available.使其使用可用空间。
Hello to get all items at top you have to put:您好,要将所有物品放在顶部,您必须放置:
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:text="TextView" />
instead of:代替:
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
if you just want the rating bar centred: just remove style="@style/starsRatingBar"如果您只想将评分栏居中:只需删除 style="@style/starsRatingBar"
EDIT: forget any think I said befor, it seems to work better when I changed the style to : (adjust your min/max height to get "perfect result" )编辑:忘记我之前说过的任何想法,当我将样式更改为 :(调整您的最小/最大高度以获得“完美结果”时,它似乎工作得更好)
<style name="starsRatingBar" parent="@android:style/Widget.RatingBar">
<item name="android:progressDrawable">@android:drawable/star_on</item>
<item name="android:minHeight">26dip</item>
<item name="android:maxHeight">26dip</item>
</style>
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