我正在为Android编写一个phonegap应用程序,我将base64 PNG字符串保存为文件.但是,我发现字符串只是转储到文件中,打开时无法将其视为图像.
我希望能够保存从base64字符串生成的图像.这就是我所拥有的:
Javascript(Formated for Phonegap):
/*** Saving The Pic ***/
var dataURL = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUAAAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO9TXL0Y4OHwAAAABJRU5ErkJggg=="; //A simple red dot
function gotFS(fileSystem) {
fileSystem.root.getFile("dot.png", {create: true, exclusive: false}, gotFileEntry, fail);
}
function gotFileEntry(fileEntry) {
fileEntry.createWriter(gotFileWriter, fail);
}
function gotFileWriter(writer) {
writer.write(dataURL); //does not open as image
}
function fail(error) {
console.log(error.code);
}
我尝试编辑代码只保存图像数据,但它也没有用.(见下文)
function gotFileWriter(writer) {
var justTheData = dataURL.replace(/^data:image\/(png|jpg);base64,/, "");//Removes everything up to ...'base64,'
writer.write(justTheData); //also does not show
}
触发everthing的HTML:
<p onclick="window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, gotFS, fail)">Save a Dot</p>
请帮忙.谢谢.
我已将Cordova WebvView作为组件嵌入到我的项目中,除了一件事,一切正常; 当按下后退按钮时,我在LogCat上收到错误消息"接收器未注册!" 我不认为我已经注册了接收器.还有在GitHub上的示例项目在这里.运行此应用程序时,我也得到相同的错误.
我想要做的是,将Cordova WebView嵌入到我的Android项目中并运行一些javascript函数.
这是我的主要活动;
public class MainNativeViewController extends FragmentActivity implements CordovaInterface,
JavaScriptListener {
FragmentTransaction transaction;
RelativeLayout childBrowser;
RelativeLayout dialogBox;
RelativeLayout emailComposer;
private ExecutorService threadPool;
CordovaWebViewFragment cordovaWebViewFragment;
public CordovaWebView cordovaWebView;
public LayoutInflater inflater;
CordovaPlugin mActivityResultCallback;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_container);
overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
threadPool = Executors.newCachedThreadPool();
cordovaWebView = SingleTonCordovaWebView.getCordovaWebView(this);
cordovaWebView.loadUrl("file:///android_asset/www/invoke_native_view.html");
FragmentManager manager = getSupportFragmentManager();
ListFragment listFragment = new ListFragment();
manager.beginTransaction().add(R.id.fragment_container, listFragment).commit();
}
@Override
public void showFragment(String fragmentName) {
/* …尝试使用cordova 2.0.0并使用此代码检查互联网连接
document.addEventListener("deviceready", onDeviceReady(), false);
function onDeviceReady() {
alert("ready");
db = window.openDatabase("loginintro", "1.0", "loginintro", 1000000);
db.transaction(populateDB, errorCB, successCB);
checkConnection();
}
function checkConnection()
{ alert("connection");
network = navigator.network.connection.type;
alert("fdfd");
var states = {};
states[Connection.UNKNOWN] = 'Unknown connection';
states[Connection.ETHERNET] = 'Ethernet connection';
states[Connection.WIFI] = 'WiFi connection';
states[Connection.CELL_2G] = 'Cell 2G connection';
states[Connection.CELL_3G] = 'Cell 3G connection';
states[Connection.CELL_4G] = 'Cell 4G connection';
states[Connection.NONE] = 'No network connection';
alert('Connection type: ' + states[networkState]);
}
但在这条线上得到错误
network = navigator.network.connection.type;
和错误是:
04-09 15:20:23.989: E/Web Console(13329): Uncaught …根据手机间隙文档我应该能够通过简单地添加<gap:plugin name="org.apache.cordova.network-information" />到添加网络cocnnection插件config.xml
我正在使用示例js函数来测试连接,它似乎不起作用.LogCat显示'无法读取属性'类型'未定义',这让我觉得插件从未添加过.
function checkConnection() {
var networkState = navigator.connection.type;
var states = {};
states[Connection.UNKNOWN] = 'Unknown connection';
states[Connection.ETHERNET] = 'Ethernet connection';
states[Connection.WIFI] = 'WiFi connection';
states[Connection.CELL_2G] = 'Cell 2G connection';
states[Connection.CELL_3G] = 'Cell 3G connection';
states[Connection.CELL_4G] = 'Cell 4G connection';
states[Connection.CELL] = 'Cell generic connection';
states[Connection.NONE] = 'No network connection';
alert('Connection type: ' + states[networkState]);
}
config.xml文件:
<?xml version="1.0" encoding="UTF-8" ?>
<widget xmlns = "http://www.w3.org/ns/widgets"
xmlns:gap = "http://phonegap.com/ns/1.0"
id …我使用谷歌dfp在我的PhoneGap项目中投放广告,这些广告呈现为iframe.
当用户点击广告时,我希望在网址中打开该网址InAppBrowser.截至目前,它只是打开了网址WebView.
iframe中的锚标签有target="_blank",但我相信因为它在iframe中,PhoneGap忽略了这一点.
我知道我InAppBrowser正在为我项目中的其他链接工作,所以我已经排除了这一点.
以下是我的config.xml中的一些设置:
...
<feature name="InAppBrowser">
<param name="ios-package" value="CDVInAppBrowser" />
</feature>
<feature name="InAppBrowser">
<param name="android-package" value="org.apache.cordova.InAppBrowser" />
</feature>
...
<preference name="stay-in-webview" value="false" />
...
<access origin="*" />
这就是呈现的iframe的样子:
<div class="adunit display-block" data-adunit="example_app_section_front_footer" data-dimensions="320x50" id="example_app_section_front_footer-auto-gen-id-1">
<div id="google_ads_iframe_/2444258/example_app_section_front_footer_0__container__" style="border: 0pt none;">
<iframe id="google_ads_iframe_/2444258/example_app_section_front_footer_0" name="google_ads_iframe_/2444258/example_app_section_front_footer_0" width="320" height="50" scrolling="no" marginwidth="0" marginheight="0" frameborder="0" src="someurl" style="border: 0px; vertical-align: bottom;">
<html>
<body>
<div id="google_image_div">
<a id="aw0" target="_blank" href="http://googleads.g.doubleclick.net/aclk?someurl" onfocus="ss('aw0')" onmousedown="st('aw0')" onmouseover="ss('aw0')" onclick="ha('aw0')"><img src="http://pagead2.googlesyndication.com/simgad/000111222" border="0" width="320" height="50" alt="" …我按照这个说明为我的Cordova/Ionic项目设置了Facebook SDK:http: //ngcordova.com/docs/plugins/facebook/
对于iOS,一切运作良好,但对于Android,最后一步
cordova构建android
失败并出现奇怪的错误:
-compile:
[javac] Compiling 97 source files to /Users/glfx/Projects/Sportcial/platforms/android/CordovaLib/ant-build/classes
[javac] warning: [options] source value 1.5 is obsolete and will be removed in a future release
[javac] warning: [options] target value 1.5 is obsolete and will be removed in a future release
[javac] warning: [options] To suppress warnings about obsolete options, use -Xlint:-options.
[javac] /Users/glfx/Projects/Sportcial/platforms/android/CordovaLib/src/org/apache/cordova/CordovaWebViewClient.java:35: error: cannot find symbol
[javac] import android.webkit.ClientCertRequest;
[javac] ^
[javac] symbol: class ClientCertRequest
[javac] location: package android.webkit
[javac] /Users/glfx/Projects/Sportcial/platforms/android/CordovaLib/src/org/apache/cordova/CordovaWebViewClient.java:145: …它适用于iOS.
我看了很多答案,包括这两个:
HTML5音频无法在PhoneGap App中播放(可以使用Media？)
我尝试了所有的解决方案:
/android_asset/www/Android 的路径这是我目前的代码:
if(device.platform === "Android") //DIFFERENT PATH FOR ANDROID
{
url = "/android_asset/www/sound.ogg";
}else{
url = "sound.mp3";
}
alert(url);
sound = new Media(url);
sound.play();
有人有想法？感觉就像我一直绕圈子一样
我创建了一个phonegap应用程序,我正在调用WCF服务,该服务位于nopCommerce插件中.
我在发送api请求时遇到以下错误:
跨源请求已阻止:同源策略禁止在http://testwebsite.com/Plugins/NopRestApi/RemoteService/WebService.svc/GetData上读取远程资源.(原因:CORS预检频道没有成功).
跨源请求已阻止:同源策略禁止在http://testwebsite.com/Plugins/NopRestApi/RemoteService/WebService.svc/GetData上读取远程资源.(原因:CORS请求失败).
使用Ajax进行API调用
$.ajax({
crossDomain: true,
type: "POST",
contentType: "application/json",
async: false,
url: "http://testwebsite.com/Plugins/NopRestApi/RemoteService/WebService.svc/GetData",
data: "{storeId:" + storeId + ", languageId:" + languageId + ", customerId:" + customerId + "}",
//data: { storeId: storeId, languageId: languageId, customerId: customerId },
dataType: 'json',
//jsonp: false,
success: function (data) {
alert(data.d);
},
error: function (xhr, textStatus, error) {
alert("Error! " + error);
}
});
我通过谷歌的一些研究在我的Web.config文件中添加了以下内容.
<httpProtocol>
<customHeaders>
<add name="Access-Control-Allow-Origin" value="*" />
<add name="Access-Control-Allow-Headers" value="Content-Type" />
</customHeaders>
</httpProtocol> …我正在Phonegap中做一个Android应用程序.在画布中,我通过触摸制作了一个动态图像.我在具有不同版本的设备中进行了测试
当我运行4.1,4.2或4.3时,图像在移动时会复制.所有其他版本都可以
我尝试应用画布背景颜色和不透明度,但仍然重复
对此有什么解决方案吗？
提前致谢
我一直坚持这个问题,我似乎无法找到解决方案.我想要实现的是:
我可以从手机的图库中选择视频,并成功将其上传到亚马逊aws.但是,当我尝试打开并播放文件时,媒体播放器会说不支持文件格式.
它不能成为我的播放器的编解码器问题,因为我可以播放上传到亚马逊的其他视频(通过标准HTML文件输入).另外,当我将同一视频从手机传输到桌面时,它可以播放.
我有一种感觉,我在设置FileTransfer对象时错过了一些东西.以下是我的代码片段:
navigator.camera.getPicture(
function(imgUrl) {
that.mDialogOpen("Uploading video...");
window.resolveLocalFileSystemURL(imgUrl, function(fileEntry) {
fileEntry.file(function(file) {
var parts = fileEntry.nativeURL.split('/');
var filename = parts[parts.length - 1];
// Params is sent to the server to generate the signed amazon put url
var params = {'a':'handlerFunctionKey', 'name':filename, 'type':'multipart/encrypted'};
var callback = function(data) {
alert("In callback");
var dataResp = data['handlerFunctionKey'];
if (dataResp.status == 'SUCCESS') {
var amazonUrl = decodeURIComponent(dataResp.object);
alert("Setting up options: " + file.type);
var ftOptions = new FileUploadOptions(); …phonegap-plugins ×10
cordova ×8
android ×6
javascript ×3
audio ×1
base64 ×1
canvas ×1
cross-domain ×1
html5 ×1
html5-canvas ×1
ios ×1
java ×1
jquery ×1
nopcommerce ×1
video ×1
wcf ×1