在模拟器中(我使用genymotion)它工作正常,但是当我在真实设备上运行它(我的手机是华硕ZenFone Laser 5.0)时会抛出一个文件错误
java.io.FileNotFoundException:/storage/emulated/0/cam20160926_075819.jpg:open failed:EACCES(Permission denied)
imgBitmap = MediaStore.Images.Media.getBitmap(cr,selectedImage);
这是方法onActivityResult()
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode){
case CAMERA_REQUEST:
if (resultCode == Activity.RESULT_OK){
Uri selectedImage = imageUri;
getActivity().getContentResolver().notifyChange(selectedImage, null);
ContentResolver cr = getActivity().getContentResolver();
Bitmap imgBitmap;
try {
imgBitmap = MediaStore.Images.Media.getBitmap(cr, selectedImage);
accountPhoto.setImageBitmap(imgBitmap);
} catch (IOException e) {
e.printStackTrace();
Toast.makeText(getActivity().getApplicationContext(), "Something went wrong while taking a photo", Toast.LENGTH_LONG).show();
Log.e("Camera", e.toString());
}
}
}
}
我阅读了有关此EACCES的一些相关问题和解决方案,似乎问题出在我的允许之下:
<uses-feature android:name="android.hardware.camera2" android:required="true"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" android:maxSdkVersion="18"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
我错过了什么吗?谢谢你回复
答案 0 :(得分:2)
您必须在开始说明之前请求许可,因为此许可在Marshmallow中被认为是危险的:
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&
checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED)
{
requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, RESULT);
}
else
{
//your code
}
答案 1 :(得分:0)
我怀疑WRITE_EXTERNAL_STORAGE
会覆盖READ_EXTERNAL_STORAGE
读取权限。如果你查看documentation,你会发现前者也允许从存储中读取。
尝试删除android:maxSdkVersion
属性,看看是否有效。我怀疑您的设备运行的是SDK版本&gt; 18.
查看此答案以获取更多信息:https://stackoverflow.com/a/15270626/425238