我正在使用 ZXing 库我已经从从 code.google.com 下载的 ZXing 文件夹中导入了“android”项目并使其成为库，还将 core.jar 文件添加到库中。当我运行它强制关闭的应用程序时，
日志猫
10-26 15:16:58.495: E/AndroidRuntime(21673): FATAL EXCEPTION: main
10-26 15:16:58.495: E/AndroidRuntime(21673): java.lang.ExceptionInInitializerError
10-26 15:16:58.495: E/AndroidRuntime(21673): at java.lang.Class.newInstanceImpl(Native Method)
10-26 15:16:58.495: E/AndroidRuntime(21673): at java.lang.Class.newInstance(Class.java:1429)
10-26 15:16:58.495: E/AndroidRuntime(21673): at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
10-26 15:16:58.495: E/AndroidRuntime(21673): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2583)
10-26 15:16:58.495: E/AndroidRuntime(21673): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2685)
10-26 15:16:58.495: E/AndroidRuntime(21673): at android.app.ActivityThread.access$2300(ActivityThread.java:126)
10-26 15:16:58.495: E/AndroidRuntime(21673): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2038)
10-26 15:16:58.495: E/AndroidRuntime(21673): at android.os.Handler.dispatchMessage(Handler.java:99)
10-26 15:16:58.495: E/AndroidRuntime(21673): at android.os.Looper.loop(Looper.java:123)
10-26 15:16:58.495: E/AndroidRuntime(21673): at android.app.ActivityThread.main(ActivityThread.java:4633)
10-26 15:16:58.495: E/AndroidRuntime(21673): at java.lang.reflect.Method.invokeNative(Native Method)
10-26 15:16:58.495: E/AndroidRuntime(21673): at java.lang.reflect.Method.invoke(Method.java:521)
10-26 15:16:58.495: E/AndroidRuntime(21673): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
10-26 15:16:58.495: E/AndroidRuntime(21673): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
10-26 15:16:58.495: E/AndroidRuntime(21673): at dalvik.system.NativeStart.main(Native Method)
10-26 15:16:58.495: E/AndroidRuntime(21673): Caused by: java.lang.NoClassDefFoundError: com.google.zxing.ResultMetadataType
10-26 15:16:58.495: E/AndroidRuntime(21673): at com.google.zxing.client.android.CaptureActivity.<clinit>(CaptureActivity.java:97)
menifest.xml 文件内容为
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="in.blogspot.khurram2java"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="16" />
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.FLASHLIGHT" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="in.blogspot.khurram2java.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.google.zxing.client.android.CaptureActivity"
android:configChanges="orientation|keyboardHidden"
android:screenOrientation="landscape"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
android:windowSoftInputMode="stateAlwaysHidden" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
<intent-filter>
<action android:name="com.google.zxing.client.android.SCAN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
MainActivity.java
Intent intent = new Intent(MainActivity.this,CaptureActivity.class);
intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
startActivityForResult(intent, 0);