Cordova相机插件在IOS 9 [英] Cordova Camera Plugin in IOS 9
问题描述
我在IOS 9上使用 Cordova 5.3.3 和Apache Camera Plugin 1.2.0。
我可以使用相机成功拍摄照片，但是当我尝试获取照片时从照片库它回到相机，我得到一个错误无法访问资产在cordova错误回调。我使用以下代码。
I am using Cordova 5.3.3 and the Apache Camera Plugin 1.2.0 on IOS 9. I can succesfully take a picture with the camera however when I try to get a picture from photo library it goes back to camera and I get an error "has no access to assets" in the cordova error callback. I am using the following code.
navigator.camera.getPicture(onSuccess, onFail, {
quality: 75,
destinationType: Camera.DestinationType.DATA_URL,
sourceType : Camera.PictureSourceType.PHOTOLIBRARY
});
当我检查应用程序权限，我看到它可以访问相机，而不是照片。这是问题吗？ Cordova在添加插件时是否添加了所需的功能？
When I check the the application rights I see that it has access to Camera but not Photos. Is that the problem? Doesn't Cordova adds the required features when adding the plugin?
推荐答案
在iOS上：在照片拍摄之后，未被要求将照片存储在照片应用中，因此将照片存储到相机胶卷中失败。
I encountered a similar issue when using cordova-plugin-camera on iOS: permission was not being requested to store the photo in the Photos app after taking a photo, so storing it to the Camera Roll was failing.
可通过使用 cordova-plugin-diagnostic 来确保授权同时授予Camera和Photos尝试拍照。这也处理了边缘情况，其中用户在初始授权之后撤销访问。根据我的实现和你对相机插件的使用，你可以尝试这样：
I worked around the issue by using cordova-plugin-diagnostic to ensure authorisation was granted for both Camera and Photos before attempting to take a photo. This also takes care of the edge case where the user revokes access after intially granting it. Based on my implementation and your usage of the camera plugin, you could try something like this:
var userMessages = {
noCamera: "The device doesn't have a working camera",
cameraUnauthorized:{
title: "Camera unavailable",
message: "The app is not authorised to access the camera, which means it can't take photos. Would you like to switch to the Settings app to allow access?"
},
cameraRollUnauthorized:{
title: "Photos unavailable",
message: "The app is not authorised to access your Photos, which means it can't take photos. Would you like to switch to the Settings app to allow access?"
},
cameraAuthorisationError:{
title: "Camera authorisation error",
message: "The app could not request access to the camera due to the following error: "
}
};
// Request camera authorisation
checkCameraIsUsable({
successFn: onCameraAuthorised,
errorFn: onCameraAuthorisationError,
requireCameraRoll: true
});
// Called on successful authorisation of camera/camera roll
function onCameraAuthorised(){
navigator.camera.getPicture(onSuccess, onFail, {
quality: 75,
destinationType: Camera.DestinationType.DATA_URL,
sourceType : Camera.PictureSourceType.PHOTOLIBRARY
});
}
// Called on error during authorisation of camera/camera roll
function onCameraAuthorisationError(error){
console.error("An error occurred authorising use of the camera"):
navigator.notification.alert(userMessages.cameraAuthorisationError.message, null, userMessages.cameraAuthorisationError.title);
}
/**
* Checks if camera is available for use; i.e. camera is present and authorized for use.
* If not and authorization has not yet been requested, requests authorization.
* If authorization is denied, informs user and offers to switch to settings page to allow.
* Optionally also checks if camera roll access has been authorized.
* * If not and authorization has not yet been requested, requests authorization.
* If authorization is denied, informs user and offers to switch to settings page to allow.
*
* @param {Object} params - parameters:
* <ul>
* <li>{Function} successFn - callback to invoke if camera is available for use.</li>
* <li>{Function} errorFn - callback to to invoke if camera is unavailable for use. The function will be passed a single {String} argument which contains the error message.</li>
* <li>{Boolean} requireCameraRoll (optional) - if true, checks for/requests camera roll authorization. Defaults to false.</li>
* </ul>
*/
function checkCameraIsUsable(params){
function requestCameraRollAuthorization(){
cordova.plugins.diagnostic.requestCameraRollAuthorization(function(granted){
if(granted){
params.successFn();
}else{
onCameraRollAuthorizationDenied();
}
}, params.errorFn);
}
function onCameraRollAuthorizationDenied(){
navigator.notification.confirm(
userMessages.cameraRollUnauthorized.message,
function(i){
if(i==1){
cordova.plugins.diagnostic.switchToSettings();
}
},
userMessages.cameraRollUnauthorized.title,
["Yes","No"]
);
}
function getCameraRollAuthorizationStatus(){
cordova.plugins.diagnostic.getCameraRollAuthorizationStatus(function(status){
switch(status){
case "denied":
onCameraRollAuthorizationDenied();
break;
case "not_determined":
requestCameraRollAuthorization();
break;
default:
params.successFn();
}
}, params.errorFn);
}
function requestCameraAuthorization(){
cordova.plugins.diagnostic.requestCameraAuthorization(function(granted){
if(granted){
if(params.requireCameraRoll){
getCameraRollAuthorizationStatus();
}else{
params.successFn();
}
}else{
onCameraAuthorizationDenied();
}
}, params.errorFn);
}
function onCameraAuthorizationDenied(){
navigator.notification.confirm(
userMessages.cameraUnauthorized.message,
function(i){
if(i==1){
cordova.plugins.diagnostic.switchToSettings();
}
},
userMessages.cameraUnauthorized.title,
["Yes","No"]
);
}
function getCameraAuthorizationStatus(){
cordova.plugins.diagnostic.getCameraAuthorizationStatus(function(status){
switch(status){
case "denied":
onCameraAuthorizationDenied();
break;
case "not_determined":
requestCameraAuthorization();
break;
default:
if(params.requireCameraRoll){
getCameraRollAuthorizationStatus();
}else{
params.successFn();
}
}
}, params.errorFn);
}
function isCameraPresent(){
cordova.plugins.diagnostic.isCameraPresent(function(present){
if(present){
getCameraAuthorizationStatus();
}else{
params.errorFn(userMessages.noCamera);
}
}, params.errorFn);
}
isCameraPresent();
};
这篇关于Cordova相机插件在IOS 9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！
