我正在尝试为android应用程序设置条形码扫描仪。我能够使用手机提供的插件来设置条码扫描器。这在一些手机上工作得很好,但在某些HTC手机上没有工作。我在网上搜索,有人建议升级到zxing 2.0应该可以解决问题。所以,我下载了zxing-2.0并按照以下步骤操作: 1.解压缩zxing-2.0并构建核心软件包。 2.将android软件包作为Android项目添加到eclipse中,并将其选作库(名为zxing-2)。 3.将core.jar作为外部jar添加到zxing-2,使其在eclipse上成功构建。 4.添加zxing-2作为我的主应用程序(myApp)的项目依赖项。还在myApp中添加了core.jar作为外部jar。在android应用程序中设置zxing 2.0条形码扫描器
MyApp的的mainfest.xml现在包含(早期它包含了动作的名称为com.phonegap.plugins.barcodescanner.SCAN):
<activity android:name="com.google.zxing.client.android.CaptureActivity"
android:screenOrientation="landscape"
android:configChanges="orientation|keyboardHidden"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
android:windowSoftInputMode="stateAlwaysHidden">
<intent-filter>
<action android:name="com.google.zxing.client.android.SCAN"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
<activity android:name="com.google.zxing.client.android.encode.EncodeActivity"
android:label="@string/share_name">
<intent-filter>
<action android:name="com.google.zxing.client.android.ENCODE"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
我使用插件来调用手机的差距提供的BarcodeScanner.java条形码扫描仪。我在它改变了扫描()方法:
//new version
public void scan() {
Intent intentScan = new Intent("com.google.zxing.client.android.SCAN");
intentScan.addCategory(Intent.CATEGORY_DEFAULT);
this.ctx.startActivityForResult((Plugin) this, intentScan, REQUEST_CODE);
}
//earlier version(it worked with zxing 1.7)
public void scan() {
Intent intentScan = new Intent("com.phonegap.plugins.barcodescanner.SCAN");
intentScan.addCategory(Intent.CATEGORY_DEFAULT);
this.ctx.startActivityForResult((Plugin) this, intentScan, REQUEST_CODE);
}
该项目建立罚款,但是当我运行它,并触发扫描,我得到以下运行时异常:
03-03 19:43:13.499: E/AndroidRuntime(276): FATAL EXCEPTION: main
03-03 19:43:13.499: E/AndroidRuntime(276): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.phonegap.myApp/com.google.zxing.client.android.CaptureActivity}: android.view.InflateException: Binary XML file line #2: Error inflating class phonegap
03-03 19:43:13.499: E/AndroidRuntime(276): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.app.ActivityThread.access$2300(ActivityThread.java:125)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.os.Handler.dispatchMessage(Handler.java:99)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.os.Looper.loop(Looper.java:123)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.app.ActivityThread.main(ActivityThread.java:4627)
03-03 19:43:13.499: E/AndroidRuntime(276): at java.lang.reflect.Method.invokeNative(Native Method)
03-03 19:43:13.499: E/AndroidRuntime(276): at java.lang.reflect.Method.invoke(Method.java:521)
03-03 19:43:13.499: E/AndroidRuntime(276): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
03-03 19:43:13.499: E/AndroidRuntime(276): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
03-03 19:43:13.499: E/AndroidRuntime(276): at dalvik.system.NativeStart.main(Native Method)
03-03 19:43:13.499: E/AndroidRuntime(276): Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class phonegap
03-03 19:43:13.499: E/AndroidRuntime(276): at android.preference.GenericInflater.createItemFromTag(GenericInflater.java:441)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.preference.GenericInflater.inflate(GenericInflater.java:317)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.preference.GenericInflater.inflate(GenericInflater.java:263)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.preference.PreferenceManager.inflateFromResource(PreferenceManager.java:251)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.preference.PreferenceManager.setDefaultValues(PreferenceManager.java:444)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.preference.PreferenceManager.setDefaultValues(PreferenceManager.java:422)
03-03 19:43:13.499: E/AndroidRuntime(276): at com.google.zxing.client.android.CaptureActivity.onCreate(CaptureActivity.java:167)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
03-03 19:43:13.499: E/AndroidRuntime(276): ... 11 more
03-03 19:43:13.499: E/AndroidRuntime(276): Caused by: java.lang.ClassNotFoundException: android.preference.phonegap in loader dalvik.system.PathClassLoader[/data/app/com.phonegap.myApp-1.apk]
03-03 19:43:13.499: E/AndroidRuntime(276): at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
03-03 19:43:13.499: E/AndroidRuntime(276): at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
03-03 19:43:13.499: E/AndroidRuntime(276): at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.preference.GenericInflater.createItem(GenericInflater.java:375)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.preference.GenericInflater.onCreateItem(GenericInflater.java:417)
03-03 19:43:13.499: E/AndroidRuntime(276): at android.preference.GenericInflater.createItemFromTag(GenericInflater.java:428)
03-03 19:43:13.499: E/AndroidRuntime(276): ... 19 more
有人可以帮助我弄清楚我在这里做错了什么,或者我错过了什么。
谢谢。
嗨Nitesh,我可以得到你的ZXing-2.0的core.jar吗?很难为我建立因为我不知道为什么,它总是在我的cmd失败,我使用EClipse和window7 btw,每当我到达例如。 C:/ usr/thetmonaye/android-sdk-15> cd核心,那么它总是说,文件canot是获取的,所以我需要ZXing 2.0的核心请愿,请给我[email protected]? :) 祝你今天愉快 – 2012-04-17 05:58:51