var pictureSource; // picture source
var destinationType; // sets the format of returned value
var photoid=window.localStorage.getItem("photoid");
var photoData=null;
// Wait for PhoneGap to connect with the device
//
document.addEventListener("deviceready",onDeviceReady,false);
// PhoneGap is ready to be used!
//
function onDeviceReady() {
pictureSource=navigator.camera.PictureSourceType;
destinationType=navigator.camera.DestinationType;
}
// A button will call this function
//
function getPhoto(source) {
alert("Entered sd card");
// Retrieve image file location from specified source
navigator.camera.getPicture(onPhotoDataSuccess, onFail, { quality: 50,
destinationType: destinationType.FILE_URI,
sourceType: source });
}
function onPhotoDataSuccess(imageData) {
console.log(imageData);
// Get image handle
var smallImage = document.getElementById('photos');
// 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;
alert(imageData);
photoData = imageData;
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail);
}
function gotFS(fileSystem) {
fileSystem.root.getFile("/sdcard/external_sd/"+photoid+".jpg", null, gotFileEntry, fail);
}
function gotFileWriter(writer) {
writer.onwrite = function(evt) {
alert("write success");
};
writer.write(photoData);
}
function fail(error) {
alert(error.code);
}
/* function onPhotoURISuccess(imageURI) {
// Uncomment to view the image file URI
console.log(imageURI);
alert("photo captured");
uploadPhoto(imageURI);
} */
/* function getPhoto(source) {
// Retrieve image file location from specified source
navigator.camera.getPicture(onPhotoURISuccess, onFail, { quality: 50,
destinationType: destinationType,
sourceType: source });
} */
// Called if something bad happens.
//
function onFail(message) {
alert('Failed because: ' + message);
}
我使用上面的代码访问SD卡中的数据。但现在我需要做的是,获取存在的图像的路径并将其放入可以访问路径并显示这些图像的diff对象中。我不清楚如何去做。 任何帮助表示赞赏。
答案 0 :(得分:2)
您可以为您正在开发的平台编写一个phonegap插件。我假设它是机器人。 Writing android plugins.
当你调用Phonegap.exec来调用插件时,插件会通过
Environment.getExternalStorageDirectory().getAbsolutePath()
然后进行基本搜索以获取所有.jpg和.png文件并返回文件所有路径的json。