[英]Inserting captured image into database issue (Cordova/SQlite/JavaScript)
[英]Storing captured image into SQlite Database? (Cordova)
到目前為止,我已經為我的應用程序使用了照相機api,單擊一個按鈕即可打開照相機,並在拍攝圖像后將其顯示在頁面上。
下一步是將圖像存儲到表中的sqlite數據庫中。 創建數據庫沒問題,因為我已經有一些用於該應用程序其他部分的其他表可以正常工作,它只是在尋找如何將圖像存儲到數據庫中。
有人可以在這里提供一些幫助嗎?
相機功能:
document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() {
document.getElementById("btnCamera").onclick = function() {
navigator.camera.getPicture(function (imageUri) {
var lastPhotoContainer = document.getElementById("lastPhoto");
alert("Hot stuff!");
lastPhotoContainer.innerHTML = "<img src='" + imageUri + "' style='width: 75%;' />";
}, null, null);
};
}
HTML:
<div data-role="page" id="page7" data-theme="d">
<div data-role="header">
<a href="#page1" class="ui-btn ui-icon-home ui-btn-icon-left">Sign ut</a>
<h1>SoccerMeet</h1>
</div>
<div data-role="main" class="ui-content">
<input id="btnCamera" type="button" value="Camera photo" />
<p id="lastPhoto"></p>
</div>
<div data-role="footer">
<h2>© Gallery</h2>
</div>
</div>
更新的腳本:
document.addEventListener("deviceready", onDeviceReady, false);
var db;
function onDeviceReady() {
db = window.openDatabase("SoccerEarth", "2.0", "SoccerEarthDB", 2 * 1024 * 1024);
db.transaction(function(tx) {
tx.executeSql('CREATE TABLE IF NOT EXISTS Gallery (id INTEGER PRIMARY KEY, myImage BLOB)');
}, errorE, successS);
}
function successS() {
alert("Camera database ready!");
document.getElementById("btnCamera").onclick = function() {
navigator.camera.getPicture(onSuccess, onFail, {
quality: 50,
destinationType: Camera.DestinationType.DATA_URL
});
};
}
function onSuccess(tx, imageData) {
alert("Camera test 1");
var image = document.getElementById("lastPhoto");
image.src = "data:image/jpeg;base64," + imageData;
base64imageData = imageData;
var _Query3 = ("INSERT INTO Gallery(myImage) values ('" + base64imageData + "')");
alert(_Query3);
tx.executeSql(_Query3);
}
/* function successCamera() {
navigator.notification.alert("Image has been stored", null, "Information", "ok");
$( ":mobile-pagecontainer" ).pagecontainer( "change", "#page4" );
} */
function onFail(message) {
alert('Failed because: ' + message);
}
function errorE(err) {
alert("Error processing SQL: " + err.code);
}
document.addEventListener("deviceready", onDeviceReady, false);
function onDeviceReady() {
document.getElementById("btnCamera").onclick = function() {
navigator.camera.getPicture(onSuccess, onFail, { quality: 50,
destinationType: Camera.DestinationType.DATA_URL
});
};
}
function onSuccess(imageData){
var image = document.getElementById("lastPhoto");
image.src = "data:image/jpeg;base64," + imageData;
//the imageData is a base64 representation of the image.
base64imageData=imageData;// this variable is a global variable and when ever asked for u can send it to SQL Operation class for storing.
}
function onFail(message) {
alert('Failed because: ' + message);
}
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