java Android - 设置应用程序背景
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Android - Set Application Background
提问by PeterW
I am trying to set my applications background to a user chosen image, but I am having some trouble. Is it possible for someone to give me an example of how to do this? I can set the image ok from my resources, but when I try to use an image on the phone I can't seem to make it work.
我正在尝试将我的应用程序背景设置为用户选择的图像，但我遇到了一些问题。有人可以给我一个如何做到这一点的例子吗？我可以从我的资源中设置图像正常，但是当我尝试在手机上使用图像时，我似乎无法让它工作。
回答by Tivie
Assuming you have created a method to let the user choose the path to the image, use this:
假设您已经创建了一个方法让用户选择图像的路径，请使用以下命令：
// Variable with the path to the background
String bg_path = "/sdcard/bg/background.png" // <-- This path can be whatever you like
//Change background of Activity
getWindow().setBackgroundDrawable(Drawable.createFromPath(bg_path));
Oh Don't forget to set you Layout background color to transparent in the XML file or you won't see the image. (this is valid to anything that fills parent window like a listview, for instance)
哦不要忘记在 XML 文件中将您的布局背景颜色设置为透明，否则您将看不到图像。（例如，这对填充父窗口（如列表视图）的任何内容都有效）
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout="@+id/m_layout"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android.background="Color.TRANSPARENT"
>
