RelativeLayout에서 버튼을 중앙에 배치 할 수 있습니까?

RelativeLayout에서 버튼을 중앙에 배치 할 수 있습니까?

---

상대 레이아웃에서 버튼을 중앙에 배치하려고하는데 이것이 가능합니까? 나는 중력 및 방향 기능을 시도했지만 아무것도하지 않습니다.

---

시험

android:layout_centerHorizontal="true"

정확히 이와 같이 작동합니다.

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:background="#ff0000">

    <Button
        android:id="@+id/btn_mybutton"
        android:layout_height="wrap_content"
        android:layout_width="124dip"
        android:layout_marginTop="5dip"
        android:layout_centerHorizontal="true"/>

</RelativeLayout>

---

상대 레이아웃에 CENTER_IN_PARENT를 사용할 수 있습니다.

android:layout_centerInParent="true"RelativeLayout의 중앙에 배치하려는 요소에 추가

---

아카디아, 아래 코드를 사용해보십시오. 원하는 결과를 얻을 수있는 몇 가지 방법이 있습니다. 이것은 쉬운 방법 중 하나입니다.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/relative_layout"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"
    android:gravity="center">

    <Button
        android:id="@+id/the_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Centered Button"/>
</RelativeLayout>

RelativeLayout 자체의 중력을 설정하면 그 안에 배치 된 모든 개체에 영향을줍니다. 이 경우에는 버튼 일뿐입니다. 물론 여기서 중력 설정을 사용할 수 있습니다 (예 : center_horizontal, top, right 등).

아래 코드를 사용할 수도 있습니다 :

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/relative_layout"
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent">

    <Button
        android:id="@+id/the_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Centered Button"
        android:layout_centerInParent="true"/>
</RelativeLayout>

---

요약

첨가:

android:layout_centerInParent="true"

just works on RelativeLayout, if one of the following attributes is also set for the view:

android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true"

which alignes the child view to the parent view. The "center" is based on the axis of the alignement you have chosen:

left/right -> vertical

top/bottom -> horizontal

Setting the gravity of childs/content inside the view:

android:gravity="center"

is centering the child inside the parent view in any case, if there is no alignment set. Optional you can choose:

<!-- Axis to Center -->
android:gravity="center_horizontal"
android:gravity="center_vertical"

<!-- Alignment to set-->
android:gravity="top"
android:gravity="bottom"
android:gravity="left"
android:gravity="right"
android:gravity="fill"
...

Then there is:

android:layout_gravity="center"

which is centering the view itself inside it's parent

And at last you can add the following attribute to the parents view:

android:layout_centerHorizontal="true"
android:layout_centerVertical="true"

---

Use the attribute android:centerInParent="true" inside a view , when you want to center the view in Relative layout.

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/main_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >
    <TextView
        android:layout_centerInParent="true"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="NWE"
        android:textSize="30dp"/>
</RelativeLayout>

---

Its easy, dont Align it to anything

<Button
        android:id="@+id/the_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" 
        android:layout_centerInParent="true"
        android:text="Centered Button"/>

---

To center align in one of the direction use android:layout_centerHorizontal="true" or android:layout_centerVertical="true" in the child layout

---

Removing any alignment like android:layout_alignParentStart="true" and adding centerInParent worked for me. If the "align" stays in, the centerInParent doesn't work

---

It's really easy. Try the code below,

<RelativeLayout
    android:id="@+id/second_RL"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/first_RL"
    android:background="@android:color/holo_blue_bright"
    android:gravity="center">

    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Button" />

</RelativeLayout>

---

you must have aligned it to left or right of parent view

don't use any of these when using android:centerInParent="true" codes:-

android:layout_alignParentLeft="true"

android:layout_alignParentLeft="true"

android:layout_alignRight=""

etc.

참고URL : https://stackoverflow.com/questions/3748255/can-you-center-a-button-in-relativelayout