Can';t以XML(Android)格式在活动中居中显示视图
我已经在我的android应用程序中创建了一个新的(第二个)活动,现在在content_area_reduce.xml(EditText)中有一个视图。该文件如下所示:Can';t以XML(Android)格式在活动中居中显示视图,android,xml,Android,Xml,我已经在我的android应用程序中创建了一个新的(第二个)活动,现在在content_area_reduce.xml(EditText)中有一个视图。该文件如下所示: <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.company.myname.appname.AreaReductionActivity"
tools:showIn="@layout/activity_area_reduction">
<EditText
android:id="@+id/edit2"
android:layout_width="200dip"
android:layout_height="50dip"
android:textAlignment="center"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"/>
</RelativeLayout>
问题是,视图显示在屏幕的左侧,而不是中央。如何解决此问题?如果需要,将发布更多代码
谢谢您应该删除android:layout\u alignParentTop=“true”行,然后添加一个新行:
<EditText
android:id="@+id/edit2"
android:layout_width="200dip"
android:layout_height="50dip"
android:textAlignment="center"
android:layout_centerInParent="true"
android:layout_centerHorizontal="true"/>
您应该删除行
android:layout\u alignParentTop=“true
”并添加一个新的行:
<EditText
android:id="@+id/edit2"
android:layout_width="200dip"
android:layout_height="50dip"
android:textAlignment="center"
android:layout_centerInParent="true"
android:layout_centerHorizontal="true"/>
试试这段代码
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<EditText
android:id="@+id/edit2"
android:layout_width="200dp"
android:layout_height="50dp"
android:textAlignment="center"
android:layout_centerInParent="true" />
</RelativeLayout>
试试这段代码
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<EditText
android:id="@+id/edit2"
android:layout_width="200dp"
android:layout_height="50dp"
android:textAlignment="center"
android:layout_centerInParent="true" />
</RelativeLayout>
只需在您的
编辑文本中使用android:layout\u centerInParent=“true”
。您将在布局的中心获得edittext
示例代码
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<EditText
android:id="@+id/edit2"
android:layout_width="200dp"
android:layout_height="50dp"
android:textAlignment="center"
android:layout_centerInParent="true" />
</RelativeLayout>
只需在您的编辑文本中使用android:layout\u centerInParent=“true”
。您将在布局的中心获得edittext
示例代码
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<EditText
android:id="@+id/edit2"
android:layout_width="200dp"
android:layout_height="50dp"
android:textAlignment="center"
android:layout_centerInParent="true" />
</RelativeLayout>
更新EditText Xml
更新EditText Xml
尝试以下代码:
<FrameLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.company.myname.appname.AreaReductionActivity"
tools:showIn="@layout/activity_area_reduction">
<EditText
android:id="@+id/edit2"
android:layout_width="200dip"
android:layout_height="50dip"
android:textAlignment="center"
android:layout_gravity="center"
/>
</FrameLayout>
尝试以下代码:
<FrameLayout 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:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.company.myname.appname.AreaReductionActivity"
tools:showIn="@layout/activity_area_reduction">
<EditText
android:id="@+id/edit2"
android:layout_width="200dip"
android:layout_height="50dip"
android:textAlignment="center"
android:layout_gravity="center"
/>
</FrameLayout>
您可以尝试此代码
<EditText
android:id="@+id/edit2"
android:layout_width="200dp"
android:layout_height="50dp"
android:textAlignment="center"
android:layout_centerInParent="true" />
您可以尝试此代码
<EditText
android:id="@+id/edit2"
android:layout_width="200dp"
android:layout_height="50dp"
android:textAlignment="center"
android:layout_centerInParent="true" />
将android:layout\u centerInParent=“true”添加到EditText。您的代码非常好,我已经检查过了将android:layout\u centerInParent=“true”添加到EditText。您的代码非常好,我已经检查过了