java - FileNotFoundException : open failed: EACCES (Permission denied)

在模拟器中(我使用genymotion)，它可以正常工作，但是当我在真实设备(我的手机是ASUS ZenFone Laser 5.0)上运行它时，会抛出一个文件notfoundexception

java.io.FileNotFoundException:/storage/emulated/0/cam20160926_075819.jpg:打开失败:EACCES(权限被拒绝)



这是onActivityResult()方法

@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，似乎该问题已得到我的许可:

<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？谢谢你的回应

最佳答案

您必须先获得许可才能开始使用说明，因为在棉花糖中此许可被认为是危险的:

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
     }

关于java - FileNotFoundException : open failed: EACCES (Permission denied)，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/39693082/