向Uri授予其他活动的权限 | 向Uri授予其他活动的权限

本文介绍了向Uri授予其他活动的权限的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在尝试从设备库中获取图像，然后在另一个活动中显示它.我的活动中的代码:

I'm trying to get image from device gallery and then show it in another activity.Code in my activity:

private void startGallery() {
    Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.addCategory(Intent.CATEGORY_OPENABLE);
    intent.setType("image/*");
    startActivityForResult(intent, REQ_OPEN_GALLERY)
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == REQ_OPEN_GALLERY &&  resultCode == Activity.RESULT_OK) {
        Uri imageUri = data.getData()
        // here I save image uri to pass to another activity
    }
}

当我尝试在其他活动中打开uri时，得到SecurityException. 文档说，收到的uri的许可持续到活动接收它们完成.因此，当我完成活动后，我无权读取文件.

When I try to open uri in another activity I get SecurityException. Docs says permission for received uri lasts until the activity that receives them is finished. So when my activity is finished I have no permission to read file.

是否有某种方法可以延长uri权限，以允许此uri打开其他活动文件?还是唯一的方法是将图像复制到本地应用程序存储中?

Is there some way to prolongate uri permission to allow other activities open file by this uri? Or only way is to copy image to local app storage?

UPD::我的目标是将收到的uri保存在本地数据库中，并允许其他活动和服务读取此文件.

UPD: My goal is saving received uri in local db and allowing other activities and services read this file.

推荐答案

是的. 在包含FLAG_GRANT_READ_URI_PERMISSION时包含您将Uri 从第一个活动传递到第二个活动:

Yes. Include FLAG_GRANT_READ_URI_PERMISSION when you pass the Uri from the first activity to the second activity:

startActivity(new Intent(this, Something.class).setData(uri).addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION));

这篇关于向Uri授予其他活动的权限的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！