Android：如何创建模态进度“轮”叠加？
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Android: How to Create a Modal Progress "Wheel" Overlay?
提问by Edwin Lee
I would like to show a modal progress "wheel" overlay on my view.
我想在我的视图上显示一个模态进度“轮”覆盖。
The ProgressDialog comes close, but I do not want the dialog background or border.
ProgressDialog 接近，但我不想要对话框背景或边框。
I tried setting the background drawable of the dialog window:
我尝试设置对话框窗口的背景可绘制：
this.progressDialog = new ProgressDialog(Main.this);
this.progressDialog.getWindow().setBackgroundDrawable(new ColorDrawable(0));
this.progressDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
this.progressDialog.setCancelable(false);
this.progressDialog.setIndeterminate(true);
this.progressDialog.show();
but to no avail (i.e. still looks the same as without the ...setBackgroundDrawable code).
但无济于事（即仍然看起来与没有 ...setBackgroundDrawable 代码相同）。
采纳答案by Steve Haley
回答by Klarth
Not sure if there is a better way, but you could get the spinner wheel on its own by using a ProgressBarand setting it to be interdeterminate. If you are using an AbsoluteLayoutyou can put it over other views. This layout should demonstrate this method with XML:
不确定是否有更好的方法，但您可以通过使用ProgressBar并将其设置为相互确定来自行获得微调轮。如果您使用的是AbsoluteLayout，则可以将其放在其他视图上。此布局应使用 XML 演示此方法：
<?xml version="1.0" encoding="utf-8"?>
<AbsoluteLayout android:id="@+id/AbsoluteLayout"
android:layout_width="fill_parent" android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android">
<ProgressBar android:id="@+id/ProgressBar"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:indeterminate="true" android:indeterminateOnly="true"
android:isScrollContainer="true" android:layout_x="100dip"
android:layout_y="10dip" android:soundEffectsEnabled="true"></ProgressBar>
<TextView android:layout_width="fill_parent"
android:layout_height="wrap_content" android:text="@string/hello"
android:layout_gravity="center_horizontal" android:gravity="center_horizontal"
android:layout_y="25dip" />
</AbsoluteLayout>
回答by EZDsIt
In order to create a full screen progress on a darkened background I use a FrameLayout and set the visibility of the RelativeLayout to VISIBLE when required or GONE when the long operation is done:
为了在变暗的背景上创建全屏进度，我使用 FrameLayout 并在需要时将 RelativeLayout 的可见性设置为 VISIBLE 或在完成长时间操作时设置为 GONE：
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentTop="true"
android:orientation="vertical"
android:padding="3dip" >
<!-- Your regular UI here -->
</LinearLayout>
</ScrollView>
<RelativeLayout
android:id="@+id/relativelayout_progress"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone"
android:background="#aa000022" >
<ProgressBar
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:indeterminateOnly="true" />
</RelativeLayout>
</FrameLayout>
回答by paiego
Klarth's solution worked for me, thanks!
Klarth 的解决方案对我有用，谢谢！
In my case I used the layout_gravity for center placement of the progress_indicator, rather than using explicit coordinates.
在我的例子中，我使用 layout_gravity 来放置 progress_indicator 的中心位置，而不是使用显式坐标。
<ProgressBar android:id="@+id/pb"
android:layout_width="40dp"
android:layout_height="40dp"
android:indeterminate="true"
android:indeterminateOnly="true"
android:isScrollContainer="true"
android:layout_gravity="center_vertical|center_horizontal"
android:soundEffectsEnabled="false"
/>
