问题描述
我用相机拍照
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE );
startActivityForResult( intent, 22 );
活动完成后，我将位图图片写入 PNG 文件.
When the activity completes, I write the bitmap picture out to a PNG file.
java.io.FileOutputStream out = openFileOutput("myfile.png", Context.MODE_PRIVATE);
bmp.compress(Bitmap.CompressFormat.PNG, 90, out);
没问题，我可以看到文件是在我的应用私有数据空间中创建的.
That goes OK, and I can see the file is created in my app private data space.
稍后我想使用 ImageView 显示该图像时遇到了困难.
I'm having difficulty when I later want to display that image using an ImageView.
任何人都可以建议代码来执行此操作吗?
Can anyone suggest code to do this?
如果我尝试创建一个包含路径分隔符的文件，它会失败.如果我尝试从不带分隔符的名称创建 Uri，则会失败.
If I try to create a File with path separators in, it fails. If I try to create a Uri from a name without separators, that fails.
我可以使用以下命令打开文件OK:
I can open the file OK using:
java.io.FileInputStream in = openFileInput("myfile.png");
但这并没有给我设置图像所需的 Uri
But that doesn't give me the Uri I need to set an image with
iv.setImageURI(u)
总结:我在私人应用数据中的 png 文件中有图片.将其设置为 ImageView 的代码是什么?
Summary: I have the picture in a png file in private app data. What's the code to set that into an ImageView?
谢谢.
推荐答案
尝试 BitmapFactory.decodeFile() 然后 setImageBitmap() 在 ImageView.
Try BitmapFactory.decodeFile() and then setImageBitmap() on the ImageView.
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