Cordova-扫描二维码（竖屏）

时间 2019-11-08

原文原文链接

首先想到的是安装cordova plugin add cordova-plugin-barcodescanner插件javascript

插件安装的比较顺利，可是打包时总出现问题，按下面解决方法ok
This is how I've solved it.
1. Open plugins/cordova-plugin-barcode-scanner/plugin.xml and delete all records xmlns:android=""
2. Open platforms/android/android.json and delete all xmlns:android=\"\"
3. Do the same in platforms/android/AndroidManifest.xmlhtml

打包完成后，装到手机上，打开app ，弹出alert scanning failed:write settings:false ，不能扫描。前端

最后在platforms\android\AndroidManifest.xml 文件中修改配置文件目标sdk为22,扫描okjava

<uses-sdk android:minSdkVersion="16" android:targetSdkVersion="22" />android

可是发现扫描不能竖屏使用，横屏很不方便。json

后来发现phonegap-plugin-barcodescanner插件能够竖屏扫描，因而赶忙安装这个插件试试app

安装步骤gradle

（1）首先按正常流程初始化项目，默认安装的是cordova-build 是6.1.2版本，安装它须要6.3及以上版本ui

更新cordova-build版本 cordova platform update android@6.3.0插件

（2）cordova plugin add phonegap-plugin-barcodescanner

在安装的时候会下载gradle-3.3-all.zip，估计网速慢的缘由下载不下来，须要手动下载

而后放到E:\cordova\hello\platforms\android\gradle目录里
同时修改E:\cordova\hello\platforms\android\cordova\lib\builders 下的GradleBuilder.js
var distributionUrl =process.env['CORDOVA_ANDROID_GRADLE_DISTRIBUTION_URL'] || '../gradle-3.3-all.zip';

（3）<uses-sdk android:minSdkVersion="16" android:targetSdkVersion="26" /> targetSdkVersion 改为26
Android SDK Manager内同时下载SDK Platform Android 8.0.0(API26)

顺利安装完成！！！

附上前端代码

<!DOCTYPE html>
<html>
<head>
    <title>take Photo</title>
    <meta http-equiv="Content-type" content="text/html; charset=utf-8">
    <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width">
    <script type="text/javascript" charset="utf-8" src="cordova.js"></script>
<script type="text/javascript">
function scanCode() {
    alert("hi code")
	
    cordova.plugins.barcodeScanner.scan(
      function (result) {
          alert("We got a barcode\n" +
                "Result: " + result.text + "\n" +
                "Format: " + result.format + "\n" +
                "Cancelled: " + result.cancelled);
			document.getElementById("text").value=result.text;	
				
      }, 
      function (error) {
          alert("Scanning failed: " + error);
      }
   );
}
</script>
</head>

<body style="padding-top:50px">
  <input type="text" id="text" />
  <button href="#" class="btn" onclick="scanCode();">扫描</button>
</body>
</html>