java android以编程方式从字符串更改背景图像
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android change background image programmatically from string
提问by Arthur Kushman
Possible Duplicate:
Setting Android images from string value
可能的重复：
从字符串值设置 Android 图像
I need to change background image programmatically on Android with source string I have.
For example I have an array of strings gotten from XML file "source1", "source2" etc., so how can I set them to background as images?
I saw examples like mTextView.setBackgroundResource(R.drawable.myResouce);, but I don't understand how to set mySource from a String. May be it is possible through drawable object?
我需要使用我拥有的源字符串在 Android 上以编程方式更改背景图像。例如，我有一个从 XML 文件“source1”、“source2”等获取的字符串数组，那么如何将它们设置为背景图像？我看到了类似的例子 mTextView.setBackgroundResource(R.drawable.myResouce);，但我不明白如何从字符串设置 mySource。可能通过可绘制对象有可能吗？
回答by Venky
Keep your images name inside drawables same as of in String.xml.
将您的图像名称保留在与 String.xml 中相同的可绘制对象中。
Say for eg: images.pngit should be imagesin String.xml
例如说：images.png它应该是String.xml 中的图像
If you pass this name to getResourceId()it will returns you Drawable with that String Variable.
如果您将此名称传递给getResourceId()，它将返回带有该字符串变量的 Drawable。
public static int getResourceId(Context context, String name, String resourceType) {
return context.getResources().getIdentifier(name, resourceType, context.getPackageName());
}
int iconId = getResourceId(Activity.this, image, "drawable");
ImageView categoryIcon = (ImageView) v.findViewById(R.id.category_icon);
categoryIcon.setImageResource(iconId);
