Android ImageView.setImageURI 在尝试分配 R.drawable.X Uri 时不起作用
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ImageView.setImageURI does NOT work when trying to assign a R.drawable.X Uri
提问by Qlimax
is related to:
与以下有关：
Need suggestion about a mixed "Uri / int id" images ambient
now my problem is that:
现在我的问题是：
ImageView imgView=(ImageView)findViewById(R.id.imgView);
Uri imgUri=Uri.parse("android.resource://my.package.name/"+R.drawable.image);
imageView.setImageURI(imgUri);
does NOT work . why?
不起作用。为什么？
i know that
我知道
imgView.setImageDrawable(Drawable.createFromStream(
getContentResolver().openInputStream(imgUri),
null));
work.
工作。
but that does NOT solve my problem. because I want to set the image with an uri independenty if this come from a resource or come from the camera ACTION_PICK intent...
但这并不能解决我的问题。因为如果这来自资源或来自相机 ACTION_PICK 意图，我想设置具有 uri 独立性的图像...
any suggestions are welcome. Thank you. Regards
欢迎提出任何建议。谢谢你。问候
回答by Norfeldt
Try this
尝试这个
Uri imgUri=Uri.parse("android.resource://my.package.name/"+R.drawable.image);
imageView.setImageURI(null);
imageView.setImageURI(imgUri);
This is a workaround for refreshing an ImageButton, which tries to cache the previous image Uri. Passing nulleffectively resets it.
这是刷新 ImageButton 的一种变通方法，它尝试缓存先前的图像 Uri。通过null有效地重置它。
Solution suggested from this book: Sams Teach Yourself Android Application Development in 24 Hours- Highly recommendable to read.
本书建议的解决方案：Sams Teach Yourself Android Application Development in 24 Hours- 强烈推荐阅读。
回答by Christine
imageView.postInvalidate()works. Or imageView.invalidate()if you're on the UI thread.
imageView.postInvalidate()作品。或者，imageView.invalidate()如果您在 UI 线程上。
回答by Dan Alboteanu
your should do something like this
你应该做这样的事情
Uri imgUri = Uri.parse("android.resource://my.package.name/drawable/image_sky");
or if you want like this
或者如果你想要这样
Uri imgUri = Uri.parse("android.resource://" + getPackageName() + "/drawable/" + "image_sky");
回答by user49439
First of all see, whether you are not override onRestart method and refreshing it.
首先看看你是不是重写了onRestart方法并刷新了它。
If you will refresh the activity the image will not set.
如果您将刷新活动，则不会设置图像。
