如果图片是使用 android 的相机应用程序拍摄的，为什么我无法在我的 android 应用程序中上传图片库中的图片？

Question

I want to upload an image from gallery and show it on my Android app. This works fine if I select an image from the screenshot folder for example. But when I select an image from the folder where the pics, taken with the phone camera, are stored, it does not work.

    public void UploadPicture(View v) {
    Intent pickPhoto = new Intent(Intent.ACTION_PICK,
            android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    startActivityForResult(pickPhoto , 1);


protected void onActivityResult(int requestCode, int resultCode, Intent imageReturnedIntent) {
    super.onActivityResult(requestCode, resultCode, imageReturnedIntent);
    switch (requestCode) {
        case 1:
            if (resultCode == RESULT_OK) {
                Uri selectedImage = imageReturnedIntent.getData();
                imageView.setImageURI(selectedImage);
            }
            break;
    }
}

Answer 1

In my opinion, these problems can be solved by ImagePicker Libraries such as Ucrop. Ucrop Library For Android

Make sure you have Runtime permission Handled. For easier permission handling you can use Dexter Dexter

Make sure u have External Storage Read permission in your manifest file. You may also require both Read/Write permission if you want to take image from camera.

 <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

Note: for android version above Pie paste these attributes in application tag in manifest.xml:

<application
        android:preserveLegacyExternalStorage="true"
        android:requestLegacyExternalStorage="true"
        ... >
...
...
</application>

Answer 2

Make sure you have give run time permission to choose image from gallery and permissions in the manifest.

Use android:requestLegacyExternalStorage="true" in the manifest also.

Then for opening the gallery use this code:

Intent intent = new Intent();
                    intent.setType("image/*");
                    intent.setAction("android.intent.action.PICK");
                    startActivityForResult(intent, PICK_IMAGE_REQUEST);

In onActivityResult:

    if (requestCode == PICK_IMAGE_REQUEST && resultCode == RESULT_OK
                && data != null && data.getData() != null) {  
            mImageUri = data.getData();
            //Use glide for better result
            Glide.with(this).load(mImageUri).into(mImageView);
         }