可能的未处理的承诺拒绝(id:0):错误:权限被拒绝(通过"CameraRoll.saveToCameraRoll()"保存图像时) [英] Possible Unhandled Promise Rejection (id: 0): Error: Permission denied (while saving the image via "CameraRoll.saveToCameraRoll()")

问题描述

来自调试器的SS

当我尝试通过React Native通过"CameraRoll.saveToCameraRoll()"将图像保存到图库时，我的权限被拒绝.我的代码在下面==>

I am getting Permission denied when trying to save the image to the gallery via "CameraRoll.saveToCameraRoll()" from react native. my code is below==>

takePicture = async function() {
if (this.camera) {
  const data = await this.camera.takePictureAsync();
  let saveResult = CameraRoll.saveToCameraRoll(data.uri);
  console.warn('takePicture ', saveResult);
  console.warn('picture url ', data.uri);
}

};

我已通过添加所需的代码从android清单和ios获得许可. (在Android上) Android清单权限

i have taken permissions from android manifest and ios by adding required codes. (On Android) android manifest permissions

即使在ios中，我也遇到相同的权限被拒绝错误.我应该怎么做才能工作.我不想尝试RN文件系统.

even in ios i am getting the same permission denied error. what should i do to work it. i don't wanna try RN File system.

推荐答案

我经历了很多资源，终于找到了原因.不知何故，我的清单权限未获得编写外部权限的权限，如下所示.

i have gone through lots of resources and finally got the reason. Somehow my manifest permission didn't get the permission for writing external permission as below.

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

所以我做了什么，我为外部编写添加了运行时权限，并且运行良好.我使用本机中的 PermissionsAndroid .

so what i did i added runtime permission for the external writing and it works fine. i use PermissionsAndroid from react-native.

代码在下面=>

try {
    const granted = await PermissionsAndroid.request(
      PermissionsAndroid.PERMISSIONS.WRITE_EXTERNAL_STORAGE,
      {
        title: "Cool Photo App Camera Permission",
        message:
          "Cool Photo App needs access to your camera " +
          "so you can take awesome pictures.",
        buttonNeutral: "Ask Me Later",
        buttonNegative: "Cancel",
        buttonPositive: "OK"
      }
    );
    if (granted === PermissionsAndroid.RESULTS.GRANTED) {
      console.log("You can use the camera");

      const data = await this.camera.takePictureAsync();
      let saveResult = CameraRoll.saveToCameraRoll(data.uri);
      console.warn("takePicture ", saveResult);
      console.warn("picture url ", data.uri);
    } else {
      console.log("Camera permission denied");
    }
  } catch (err) {
    console.warn(err);
  }

这篇关于可能的未处理的承诺拒绝(id:0):错误:权限被拒绝(通过"CameraRoll.saveToCameraRoll()"保存图像时)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IT屋！