我的应用程序让我发疯了。
我正在使用基于phonegap的DevExtreme。
我想在我的应用程序中使用相机拍照,但我遇到了一些麻烦。
首先,这是我的config.xml。
<widget id="com.devexpress.apptemplate" version="1.0" versionCode="1">
<name>ApplicationTemplate</name>
<description>Template</description>
<preference name="permissions" value="none" />
<preference name="prerendered-icon" value="true" />
<preference name="android-windowSoftInputMode" value="adjustPan" />
<preference name="SplashScreenDelay" value="60000" />
<preference name="AutoHideSplashScreen" value="false" />
<preference name="SplashShowOnlyFirstTime" value="false" />
<preference name="FadeSplashScreen" value="false" />
<preference name="ShowSplashScreenSpinner" value="false" />
<preference name="DisallowOverscroll" value="true" />
<preference name="StatusBarOverlaysWebView" value="false" />
<preference name="StatusBarBackgroundColor" value="#000000" />
<preference name="android-minSdkVersion" value="14" />
<preference name="android-targetSdkVersion" value="22" />
<plugin name="cordova-plugin-camera" spec="^2.4.1" source="npm" />
<plugin name="cordova-plugin-splashscreen" onload="true" />
<plugin name="cordova-plugin-whitelist" />
<plugin name="cordova-plugin-ios-longpress-fix" />
<plugin name="cordova-plugin-statusbar" onload="true" />
<access origin="*" />
</widget>
你觉得这里有什么问题吗?
此外,我有一个按钮来调用相机功能(从教程中复制):
// Called when a photo is successfully retrieved
//
function onPhotoDataSuccess(imageData) {
try
{
// Get image handle
//
var smallImage = document.getElementById('smallImage');
// Unhide image elements
//
smallImage.style.display = 'block';
// Show the captured photo
// The inline CSS rules are used to resize the image
//
smallImage.src = "data:image/jpeg;base64," + imageData;
}
catch (err) {
alert(err.message);
}
}
// Called when a photo is successfully retrieved
//
function onPhotoFileSuccess(imageData) {
// Get image handle
console.log(JSON.stringify(imageData));
// Get image handle
//
var smallImage = document.getElementById('smallImage');
// Unhide image elements
//
smallImage.style.display = 'block';
// Show the captured photo
// The inline CSS rules are used to resize the image
//
smallImage.src = imageData;
}
// Called when a photo is successfully retrieved
//
function onPhotoURISuccess(imageURI) {
// Uncomment to view the image file URI
// console.log(imageURI);
// Get image handle
//
var largeImage = document.getElementById('largeImage');
// Unhide image elements
//
largeImage.style.display = 'block';
// Show the captured photo
// The inline CSS rules are used to resize the image
//
largeImage.src = imageURI;
}
// A button will call this function
//
function capturePhotoWithData() {
try {
// Take picture using device camera and retrieve image as base64-encoded string
navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 50 });
}
catch (err) {
alert(err.message);
}
}
function capturePhotoWithFile() {
navigator.camera.getPicture(onPhotoFileSuccess, onFail, { quality: 50, destinationType: Camera.DestinationType.FILE_URI });
}
// A button will call this function
//
function getPhoto(source) {
debugger;
// Retrieve image file location from specified source
navigator.camera.getPicture(onPhotoURISuccess, onFail, {
quality: 50,
destinationType: OverviewAPP.destinationType.FILE_URI,
sourceType: source
});
}
// Called if something bad happens.
//
function onFail(message) {
alert('Failed because: ' + message);
}
这是我的相关HTML:
[...]
<div class="myBtnPhoto" data-bind="dxButton: { text: 'Conferma con foto', onClick: capturePhotoWithData}" style="float:right;"></div>
[...]
<img style="display:none;width:60px;height:60px;" id="smallImage" src="" />
<img style="display:none;" id="largeImage" src="" />
[...]
函数capturePhotoWithData被正确调用,但该函数进入catch分支并且警报显示“无法读取未定义的'propetry'getPicture'”
我创建模板,然后构建解决方案。我在我的Android设备上试试这个。我在网上看了很多论坛和其他问题,但没有什么对我有用。
你看到这里有什么错误或遗漏吗?
答案 0 :(得分:0)
这意味着navigator.camera
未定义,因此您的项目未看到cordova-plugin-camera
。
最常见的问题可能是:在设备准备好之前调用它。
请务必将相机调入deviceready
:
document.addEventListener("deviceready", function(){
console.log(navigator); // here you can check all plugins
}
您可以运行:$ cordova plugin list
以确保此插件也存在于列表中。
还尝试重建:$ cordova build android
(或ios)