我们正在使用CodeName One为Android构建移动应用。作为我们要求的一部分,我们已经有一个HTML5页面,其中包含一个视频元素,可以使用设备的相机拍摄照片。我们需要在CodeName One应用程序中调用此HTML5页面。但是这段代码没有按照预期工作,但是当直接从chrome浏览器调用时,html文件URL工作得很好。从Chrome浏览器查看时,我得到提示询问相机权限,在CodeName One应用程序中我没有看到权限提示。
我最近发布了一个类似的问题html video control is not working in codenameone app for android
我已经尝试了那里给出的建议,但它对我没用。也许我在这里做错了什么?
在我的CodeName一个类中,我有以下代码。代码基本上创建了一个新的BrowserComponent,并在此组件中设置了camera1.html URL。 camera1.html包含HTML5代码,用于显示拍摄照片的视频元素。 `
private Form current;
private Resources theme;
public void init(Object context) {
theme = UIManager.initFirstTheme("/theme");
// Enable Toolbar on all Forms by default
Toolbar.setGlobalToolbar(true);
}
public void start(){
if(current != null) {
current.show();
return;
}
Form f = new Form("Camera", new BorderLayout());
try {
CN1NativeCameraInterface cnci = NativeLookup.create(CN1NativeCameraInterface.class);
if (cnci != null && cnci.isSupported()) {
boolean cameraPerm = cnci.promptCameraPermission();
if (cameraPerm) {
f.setTitle("Camera Permission true");
}
}
BrowserComponent browser = new BrowserComponent();
browser.setURL("https://8c10ec77.ngrok.io/app/camera1.html");
f.add(BorderLayout.CENTER, browser);
}
catch (Exception ex) {
ex.printStackTrace();
}
finally {
f.show();
}
}
public void stop(){
current = Display.getInstance().getCurrent();
}
public void destroy(){
}
`我已经定义了一个看起来像这样的原生界面
public interface CN1NativeCameraInterface extends NativeInterface {
public boolean promptCameraPermission();
}
在CodeName One中为此接口生成本机访问代码,Android的实现如下
import com.codename1.impl.android.AndroidImplementation;
import android.Manifest;
public class CN1NativeCameraInterfaceImpl {
public boolean promptCameraPermission() {
return AndroidImplementation.checkForPermission(Manifest.permission.CAMERA, "This is required to take a picture");
}
public boolean isSupported() {
return true;
}
}
当我在Android设备上运行时,我可以看到HTML页面被加载,但视频元素没有加载,我看到的只是视频元素的占位符。该应用程序也不会要求相机许可,这是其他相关问题中建议的内容。
我在这做错了什么?
更新1:
我在使用adb shell“logcat --pid = $(pidof -s com.codename1)”命令从设备获取的日志中看到以下错误:
错误1 -
09-06 11:48:42.530 10172 10202 I WebViewFactory:正在加载com.android.chrome版本69.0.3497.76(代码349707652)09-06 11:48:42.595 10172 10202我zygote64:拒绝重新初始化以前失败的类java .lang.Class:java.lang.NoClassDefFoundError:解析失败:Landroid / webkit / TracingController; 09-06 11:48:42.595 10172 10202我zygote64:at java.lang.Class java.lang.Class.classForName(java.lang.String,boolean,java.lang.ClassLoader)(Class.java:-2)09 -06 11:48:42.595 10172 10202 I zygote64:at java.lang.Class java.lang.Class.forName(java.lang.String,boolean,java.lang.ClassLoader)(Class.java:453)09-06 11:48:42.595 10172 10202我zygote64:at java.lang.Class android.webkit.WebViewFactory.getWebViewProviderClass(java.lang.ClassLoader)(WebViewFactory.java:151)09-06 11:48:42.595 10172 10202 I zygote64:在java.lang.Class android.webkit.WebViewFactory.getProviderClass()(WebViewFactory.java:472)09-06 11:48:42.595 10172 10202我zygote64:在android.webkit.WebViewFactoryProvider android.webkit.WebViewFactory.getProvider() (WebViewFactory.java:212)09-06 11:48:42.595 10172 10202我zygote64:在android.webkit.CookieManager android.webkit.CookieManager.getInstance()(CookieManager.java:39)09-06 11:48:42.595 10172 10202我zygote64:在android.webkit.CookieManager com.codename1.imp l.android.AndroidImplementation.getCookieManager()(AndroidImplementation.java:4511)09-06 11:48:42.595 10172 10202 I zygote64:at java.util.Vector com.codename1.impl.android.AndroidImplementation.getCookiesForURL(java.lang .string)(AndroidImplementation.java:4528)09-06 11:48:42.595 10172 10202我zygote64:at void com.codename1.io.ConnectionRequest.performOperation()(ConnectionRequest.java:633)09-06 11:48: 42.595 10172 10202 I zygote64:at void com.codename1.io.NetworkManager $ NetworkThread.run()(NetworkManager.java:282)09-06 11:48:42.595 10172 10202 I zygote64:at void com.codename1.impl.CodenameOneThread $ 1.run()(CodenameOneThread.java:60)09-06 11:48:42.595 10172 10202我zygote64:at void java.lang.Thread.run()(Thread.java:764)09-06 11:48: 42.595 10172 10202 I zygote64:引起:java.lang.ClassNotFoundException:路径上没有找到类“android.webkit.TracingController”:DexPathList [[zip file“/data/app/com.android.chrome-fq476TNc_btk-Vb0sBbuyw == / base.apk“],nativeLibraryDire ctories = [/ data / app / com.android.chrome-fq476TNc_btk-Vb0sBbuyw == / lib / arm64,/ data / app / com.android.chrome-fq476TNc_btk-Vb0sBbuyw== / base.apk!/ lib / arm64- v8a,/ system / lib64,/ system / vendor / lib64]] 09-06 11:48:42.595 10172 10202我zygote64:at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String)(BaseDexClassLoader .java:93)09-06 11:48:42.595 10172 10202我zygote64:at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String,boolean)(ClassLoader.java:379)09-06 11:48:42.595 10172 10202 I zygote64:at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String)(ClassLoader.java:312)09-06 11:48:42.595 10172 10202 I zygote64: at java.lang.Class java.lang.Class.classForName(java.lang.String,boolean,java.lang.ClassLoader)(Class.java:-2)09-06 11:48:42.595 10172 10202 I zygote64:at java.lang.Class java.lang.Class.forName(java.lang.String,boolean,java.lang.ClassLoader)(Class.java:453)09-06 11:48:42.595 10172 10202 I zygote64:at java。 lang.Class androi d.webkit.WebViewFactory.getWebViewProviderClass(java.lang.ClassLoader)(WebViewFactory.java:151)09-06 11:48:42.595 10172 10202 I zygote64:at java.lang.Class android.webkit.WebViewFactory.getProviderClass()( WebViewFactory.java:472)09-06 11:48:42.595 10172 10202我zygote64:在android.webkit.WebViewFactoryProvider android.webkit.WebViewFactory.getProvider()(WebViewFactory.java:212)09-06 11:48:42.595 10172 10202我zygote64:在android.webkit.CookieManager android.webkit.CookieManager.getInstance()(CookieManager.java:39)09-06 11:48:42.595 10172 10202我zygote64:在android.webkit.CookieManager com.codename1.impl .android.AndroidImplementation.getCookieManager()(AndroidImplementation.java:4511)09-06 11:48:42.595 10172 10202我zygote64:at java.util.Vector com.codename1.impl.android.AndroidImplementation.getCookiesForURL(java.lang。字符串)(AndroidImplementation.java:4528)09-06 11:48:42.595 10172 10202 I zygote64:at void com.codename1.io.ConnectionRequest.performOperation()(Connec tionRequest.java:633)
错误2 -
09-06 11:48:44.506 10172 10266 W VideoCapabilities:无法识别的个人资料2130706433 for video / avc 09-06 11:48:44.506 10172 10266 W VideoCapabilities:无法识别的个人资料2130706434 for video / avc 09-06 11:48:44.536 10172 10266 W VideoCapabilities:无法识别的个人资料2130706433 for video / avc 09-06 11:48:44.536 10172 10266 W VideoCapabilities:无法识别的个人资料2130706434 for video / avc 09-06 11:48:44.542 10172 10266 W VideoCapabilities:无法识别的个人资料2130706433 for video / avc 09-06 11:48:44.542 10172 10266 W VideoCapabilities:无法识别的个人资料2130706434 for video / avc 09-06 11:48:44.551 10172 10266 W VideoCapabilities:无法识别的个人资料/等级0/3 for video / mpeg2 09-06 11:48 :44.555 10172 10266 W VideoCapabilities:无法识别的配置文件/级别0/3用于视频/ mpeg2 09-06 11:48:44.564 10172 10266 W VideoCapabilities:不支持的mime视频/ x-ms-wmv 09-06 11:48:44.568 10172 10266 W VideoCapabilities:不支持的mime视频/ x-ms-wmv 09-06 11:48:44.574 10172 10266 W VideoCapabili tie:不支持的mime video / divx 09-06 11:48:44.577 10172 10177我zygote64:部分代码缓存集合,代码= 55KB,数据= 56KB 09-06 11:48:44.580 10172 10266 W VideoCapabilities:不支持的mime视频/ divx311 09-06 11:48:44.584 10172 10266 W VideoCapabilities:不支持的mime video / divx4 09-06 11:48:44.585 10172 10177我zygote64:代码缓存收集后,代码= 55KB,数据= 56KB 09-06 11:48 :44.585 10172 10177我zygote64:将代码缓存容量增加到256KB 09-06 11:48:44.605 10172 10266 W VideoCapabilities:不支持的mime视频/ mp4v-esdp 09-06 11:48:44.633 10172 10266 I VideoCapabilities:不支持的配置文件4 for video / mp4v-es 09-06 11:48:44.867 10172 10282 W cr_CrashFileManager:/data/user/0/com.codename1/cache/WebView/Crash报告不存在或不是目录
错误3 -
09-06 11:48:47.715 10172 10253 I CameraManagerGlobal:连接到相机服务09-06 11:48:47.799 10172 10172 D代号1:onPermissionRequest 09-06 11:48:50.952 10172 10172 E AndroidImplementation:null 09-06 11 :48:50.952 10172 10172 E AndroidImplementation:java.io.FileNotFoundException:/data/user/0/com.codename1/files/CN1$AndroidServiceProperties(没有这样的文件或目录)09-06 11:48:50.952 10172 10172 E AndroidImplementation :at java.io.FileInputStream.open0(Native Method)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at java.io.FileInputStream.open(FileInputStream.java:200)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at java.io.FileInputStream。(FileInputStream.java:150)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at android.app.ContextImpl.openFileInput(ContextImpl.java:515)09-06 11 :48:50.952 10172 10172 E AndroidImplementation:在android.content.ContextWrapper.openFileInput(ContextWrapper.java:190)09-06 11:48:50.952 10172 10172 E和roidImplementation:at com.codename1.impl.android.AndroidImplementation.getServiceProperties(AndroidImplementation.java:6081)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at com.codename1.impl.android.AndroidImplementation.writeServiceProperties(AndroidImplementation.java :6107)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at com.codename1.CameraDemoStub.onStop(CameraDemoStub.java:166)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at android.app.Instrumentation .callActivityOnStop(Instrumentation.java:1486)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at android.app.Activity.performStop(Activity.java:7178)09-06 11:48:50.952 10172 10172 E AndroidImplementation:在android.app.ActivityThread.performStopActivityInner(ActivityThread.java:4274)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at android.app.ActivityThread.handleStopActivity(ActivityThread.java:4333)09-06 11:48: 50.952 10172 10172 E AndroidImplementation:在android.app.Activi tyThread.-wrap24(Unknown来源:0)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1722)09-06 11:48:50.952 10172 10172 E AndroidImplementation:在android.os.Handler.dispatchMessage(Handler.java:105)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at android.os.Looper.loop(Looper.java:164)09-06 11 :48:50.952 10172 10172 E AndroidImplementation:at android.app.ActivityThread.main(ActivityThread.java:6798)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at java.lang.reflect.Method.invoke(Native Method) )09-06 11:48:50.952 10172 10172 E AndroidImplementation:at com.android.internal.os.Zygote $ MethodAndArgsCaller.run(Zygote.java:240)09-06 11:48:50.952 10172 10172 E AndroidImplementation:at com .android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
错误4 -
09-06 11:48:51.005 10172 10172 D CameraDemo:[main] 0:0:0,3 - [LOG]发生以下错误:NotAllowedError:权限被拒绝在https://8319bf05.ngrok.io/ventasys/venta/code/camera1.html的第55行
上面的错误(错误4)来自从CodeName One调用的.html。这是HTML的代码:
<!DOCTYPE HTML>
<html>
<head>
<script>
function copyPhoto() {
var imgName;
imgName = getParamValues("imgNm");
window.opener.document.getElementById(imgName).src = document.getElementById("theimage1").src;
window.close();
}
function getParamValues(paramNm) {
var qstring = window.location.href.slice(window.location.href.indexOf('?') + 1).split('&');
for (var i = 0; i < qstring.length; i++) {
var urlparam = qstring[i].split('=');
if (urlparam[0] == paramNm) {
return urlparam[1];
}
}
}
function snapshot() {
var canvas = document.getElementById("thecanvas");
var ctx = canvas.getContext("2d");
//var constraints = { video: { facingMode: "user" }, audio: false };
//var constraints = {
// video: {
// width: { min: 640, ideal: 1920 },
// height: { min: 400, ideal: 1080 },
// aspectRatio: { ideal: 1.7777777778 },
// facingMode: "environment"
// },
// audio: false
//};
var constraints = {
video: { facingMode: "user" },
audio: false
};
try {
navigator.mediaDevices.getUserMedia(constraints).then(
// successCallback
function (localMediaStream) {
document.getElementById("mylog").innerHTML = document.getElementById("mylog").innerHTML + '1.3 ';
video = document.querySelector('video');
video.srcObject = localMediaStream;
})
.catch(function (err) {
console.log("The following error occured: " + err);
document.getElementById("mylog").innerHTML = document.getElementById("mylog").innerHTML + ' <br> 5 Err' + err;
});
}
catch (e)
{
document.getElementById("mylog").innerHTML = document.getElementById("mylog").innerHTML + ' 6 catch ##** ' + e;
}
document.getElementById("mylog").innerHTML = document.getElementById("mylog").innerHTML + '10 ';
canvas.width = 640;
canvas.height = video.videoHeight / (video.videoWidth / canvas.width);
// Draws current image from the video element into the canvas
//ctx.drawImage(video, 0,0, video.videoWidth, video.videoHeight);
ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
var canvas = document.getElementById("thecanvas");
var dataUrl = canvas.toDataURL('image/jpeg', 0.6);
}
</script>
</head>
<body onload="snapshot();">
<div id='mylog'></div>
<p><video id="video" controls autoplay></video></p>
<p><button onclick="snapshot();">Take Snapshot</button></p>
<div id='item' hidden>
<p><canvas id="thecanvas"></canvas></p>
</div>
<p><image id="theimage1"></image></p>
<p><button onclick="copyPhoto()">Done</button></p>
<p><button onclick="copyPhoto()">Reload</button></p>
</body>
</html>
尝试将此添加到您的init(Object)
方法:
Display.getInstance().setProperty("android.WebView.grantPermissionsFrom", url_of_your_video_page);
您可以添加多个以空格分隔的URL。如果这不起作用,我们可能还需要其他东西。