显示屏幕进度条中心 [英] show progress bar center of screen
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问题描述
我在布局内使用进度条.当我启动应用程序时,进度条总是与屏幕的左上角对齐.下面是我的xml布局文件.我如何在屏幕中央对齐它.!!
I using a progress bar inside my layout. When I start the app the progress bar is always aligned to top left corner of screen. Below is my xml layout file. how can I align it on centre of the screen. !!
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/relativeLayout1"
android:orientation="vertical"
android:background="#F1F1F1">
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="@+id/scrolllinear">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/LinearLayout1"
android:orientation="vertical"
android:visibility="gone" >
<RelativeLayout android:id="@+id/layout_category1"
android:padding="10.0dip"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10.0dip"
android:layout_marginTop="10.0dip"
android:layout_marginRight="10.0dip"
android:clickable="false"
android:descendantFocusability="blocksDescendants">
<ImageView
android:id="@+id/more_1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:src="@drawable/more"/>
<TextView android:textSize="28.0sp"
android:id="@+id/tv_category1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="more 1"
android:layout_toLeftOf="@id/tv_see_more_1"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true">
</TextView>
</RelativeLayout>
<horizontalscrollview
android:id="@+id/HMscrollView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/layout_category1">
<LinearLayout
android:id="@+id/myLayout"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_margin="5dp">
</LinearLayout>
</horizontalscrollview>
</LinearLayout>
<LinearLayout
android:id="@+id/progLayout"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@null"
android:visibility="gone"
android:layout_gravity="center">
**<ProgressBar
android:id="@+id/progressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:indeterminateDrawable="@drawable/my_progress_indeterminate" >
</ProgressBar>**
</LinearLayout>
<TextView
android:id="@+id/CheckTest"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="try again."
android:visibility="gone"
android:textSize="25.0sp"
android:textStyle="bold"
android:layout_marginTop="130dp"
></TextView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:id="@+id/LinearLayout2"
android:visibility="gone" >
<RelativeLayout android:id="@+id/layout_category2"
android:padding="10.0dip"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10.0dip"
android:layout_marginTop="10.0dip"
android:layout_marginRight="10.0dip">
<ImageView
android:id="@+id/tv_see_more_2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:src="@drawable/more"/>
<TextView android:textSize="28.0sp"
android:id="@+id/tv_category2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeftOf="@id/tv_see_more_2"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true">
</TextView>
</RelativeLayout>
<horizontalscrollview
android:id="@+id/scrollViewHM2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@+id/layout_category2">
<LinearLayout
android:id="@+id/myLayout2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
</LinearLayout>
</horizontalscrollview>
</LinearLayout>
</LinearLayout>
</ScrollView>
</RelativeLayout>
推荐答案
从 ScrollView
移除进度栏,并将其放置为父级布局的第一个子级,并使用 android:layout_centerInParent ="true"
Remove Progress bar from ScrollView
and place it as the first child of parent layout and use android:layout_centerInParent="true"
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/relativeLayout1"
android:orientation="vertical"
android:background="#F1F1F1">
<ProgressBar
android:id="@+id/progressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:indeterminateDrawable="@drawable/my_progress_indeterminate"
android:layout_centerInParent="true" >
</ProgressBar>
<ScrollView
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:id="@+id/scrolllinear">
这篇关于显示屏幕进度条中心的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
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