AttachmentPagerFragment.java 文件源码

public void onAttachClick() {
    final int permissionStatus = ContextCompat.checkSelfPermission(
            getContext(),
            Manifest.permission.READ_EXTERNAL_STORAGE
    );

    if (permissionStatus != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(
                getActivity(),
                new String[]{Manifest.permission.READ_EXTERNAL_STORAGE},
                REQUEST_ATTACH_PERMISSION
        );

        return;
    }

    final Intent attach = new Intent(Intent.ACTION_GET_CONTENT)
            .addCategory(Intent.CATEGORY_OPENABLE)
            .setType("*/*");

    startActivityForResult(attach, REQUEST_ATTACH_FILE);
}