ImageView中水平居中TextView

Question

如何在ImageView中水平居中TextView？ 目前位于ImageView的右下角。

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <ImageView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/imageView" 
     android:background="@drawable/img" /> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/textView" 
     android:layout_alignBottom="@+id/imageView" 
     android:layout_alignRight="@+id/imageView" 
     android:layout_alignEnd="@+id/imageView" /> 
</RelativeLayout> 

Answer 1

如果你想TextView到始终适合ImageView尺寸，它位于RelativeLayout上，您应该试试这个：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <ImageView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/imageView" 
     android:background="@drawable/img" /> 

    <TextView 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:id="@+id/textView" 
     android:text="hsjsdjhf" 
     android:gravity="center" 
     android:layout_alignTop="@id/imageView" 
     android:layout_alignBottom="@id/imageView" 
     android:layout_alignLeft="@id/imageView" 
     android:layout_alignRight="@id/imageView" /> 
</RelativeLayout> 

Answer 2

尝试FrameLayout代替RelativeLayout并设置gravity="center"。

<?xml version="1.0" encoding="utf-8"?> 
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:gravity="center" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <ImageView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/imageView" 
     android:background="@drawable/img" /> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/textView" /> 
</FrameLayout> 

Answer 3

尝试...... 要对齐在彼此顶部的元素，你应该使用frame layout

<?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" > 

     <FrameLayout 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" > 

      <ImageView 
       android:id="@+id/imageView" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:background="@drawable/img" /> 

      <TextView 
       android:id="@+id/textView" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:layout_gravity="center" /> 
     </FrameLayout> 
</RelativeLayout> 

Answer 4

试试这个：

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 

    android:layout_width="wrap_content" 
    android:layout_height="wrap_content"> 

    <ImageView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/imageView" 
     android:background="@drawable/img" /> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/textView" 
     android:text="hsjsdjhf" 
     android:layout_centerInParent="true" /> 
</RelativeLayout> 

Answer 5

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 

    <RelativeLayout 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content"> 
     <ImageView 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content" 
      android:id="@+id/imageView" 
      android:background="@drawable/texts" /> 

    <TextView 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:id="@+id/textView" 
     android:text="hello world" 
     android:layout_centerInParent="true"/> 
    </RelativeLayout> 

</RelativeLayout>