我想使用 Google Picker API (javascript) 从 Google Picker 回调所选图像(多选图像)的缩略图 URL。但结果只有第一个选择的图像(只有 1 个图像)。谁能帮我解决这个问题?
截图:
下面是我的 javascript API:
<!-- START PICKER -->
<button type="button" id="pick">Pick File</button>
<pre id="fileInfo"></pre>
<script>
(function() {
/**
* Initialise a Google Driver file picker
*/
var FilePicker = window.FilePicker = function(options) {
// Config
this.apiKey = options.apiKey;
this.clientId = options.clientId;
// Elements
this.buttonEl = options.buttonEl;
// Events
this.onSelect = options.onSelect;
this.buttonEl.addEventListener('click', this.open.bind(this));
// Disable the button until the API loads, as it won't work properly until then.
this.buttonEl.disabled = true;
// Load the drive API
gapi.client.setApiKey(this.apiKey);
gapi.client.load('drive', 'v2', this._driveApiLoaded.bind(this));
google.load('picker', '1', { callback: this._pickerApiLoaded.bind(this) });
}
FilePicker.prototype = {
/**
* Open the file picker.
*/
open: function() {
// Check if the user has already authenticated
var token = gapi.auth.getToken();
if (token) {
this._showPicker();
} else {
// The user has not yet authenticated with Google
// We need to do the authentication before displaying the Drive picker.
this._doAuth(false, function() { this._showPicker(); }.bind(this));
}
},
/**
* Show the file picker once authentication has been done.
* @private
*/
_showPicker: function() {
var accessToken = gapi.auth.getToken().access_token;
var view = new google.picker.DocsView();
view.setIncludeFolders(true);
this.picker = new google.picker.PickerBuilder()
.enableFeature(google.picker.Feature.NAV_HIDDEN)
.enableFeature(google.picker.Feature.MULTISELECT_ENABLED)
.addView(google.picker.ViewId.DOCS_IMAGES)
.setAppId(this.clientId)
.setDeveloperKey(this.apiKey)
.setOAuthToken(accessToken)
.setCallback(this._pickerCallback.bind(this))
.build()
.setVisible(true);
},
/**
* Called when a file has been selected in the Google Drive file picker.
* @private
*/
_pickerCallback: function(data) {
if (data[google.picker.Response.ACTION] == google.picker.Action.PICKED) {
var file = data[google.picker.Response.DOCUMENTS][0],
id = file[google.picker.Document.ID],
request = gapi.client.drive.files.get({
fileId: id
});
request.execute(this._fileGetCallback.bind(this));
}
},
/**
* Called when file details have been retrieved from Google Drive.
* @private
*/
_fileGetCallback: function(file) {
if (this.onSelect) {
this.onSelect(file);
}
},
/**
* Called when the Google Drive file picker API has finished loading.
* @private
*/
_pickerApiLoaded: function() {
this.buttonEl.disabled = false;
},
/**
* Called when the Google Drive API has finished loading.
* @private
*/
_driveApiLoaded: function() {
this._doAuth(true);
},
/**
* Authenticate with Google Drive via the Google JavaScript API.
* @private
*/
_doAuth: function(immediate, callback) {
gapi.auth.authorize({
client_id: this.clientId,
scope: 'https://www.googleapis.com/auth/drive.readonly',
immediate: immediate
}, callback);
}
};
}());
</script>
<script>
function initPicker() {
var picker = new FilePicker({
apiKey: 'MY_API_KEY',
clientId: 'MY_CLIENT_ID-0bsroe3tqbfatoiie3h3qvaqtv4q0f5c.apps.googleusercontent.com',
buttonEl: document.getElementById('pick'),
onSelect: function(file) {
console.log(file);
document.getElementById('fileInfo').innerHTML = file.thumbnailLink;
}
});
}
</script>
<script src="https://www.google.com/jsapi?key=MY_API_KEY"></script>
<script src="https://apis.google.com/js/client.js?onload=initPicker"></script>
<!-- END PICKER -->
最佳答案
我在您的 _pickerCallback
方法中看到这一行:
var file = data[google.picker.Response.DOCUMENTS][0]
看起来像是从 Google 示例中复制过来的。在这里,您总是只使用所有选定图像中的第一张图像。
删除 [0]
,它应该可以工作。
关于javascript - 如何从 Google Picker API 获取多张选中的图片,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40241907/