ActivityNotFoundException生成qrcode

Question

我试图通过intent生成qrcode，但我总是得到ActivityNotFoundException。我的lib中有我的core.jar。

这里是我的代码：

intent = new Intent("com.google.zxing.client.android.ENCODE"); 
    intent.putExtra("ENCODE_TYPE", "TEXT_TYPE"); 
    intent.putExtra("ENCODE_DATA", "Hello World!"); 
    startActivity(intent); 

而且这里是日志：

10-12 20:47:09.457: E/AndroidRuntime(1347): FATAL EXCEPTION: main 
10-12 20:47:09.457: E/AndroidRuntime(1347): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.sampleqrcode/com.example.sampleqrcode.MainActivity}: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.google.zxing.client.android.ENCODE cat=[android.intent.category.DEFAULT] (has extras) } 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.ActivityThread.access$600(ActivityThread.java:123) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.os.Handler.dispatchMessage(Handler.java:99) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.os.Looper.loop(Looper.java:137) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.ActivityThread.main(ActivityThread.java:4424) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at java.lang.reflect.Method.invokeNative(Native Method) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at java.lang.reflect.Method.invoke(Method.java:511) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at dalvik.system.NativeStart.main(Native Method) 
10-12 20:47:09.457: E/AndroidRuntime(1347): Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.google.zxing.client.android.ENCODE cat=[android.intent.category.DEFAULT] (has extras) } 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1512) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.Instrumentation.execStartActivity(Instrumentation.java:1384) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.Activity.startActivityForResult(Activity.java:3190) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.Activity.startActivity(Activity.java:3297) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at com.example.sampleqrcode.MainActivity.onCreate(MainActivity.java:24) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.Activity.performCreate(Activity.java:4465) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 
10-12 20:47:09.457: E/AndroidRuntime(1347):  ... 11 more 

我缺少的东西？

Answer 1

1. 从here导入工作区中的zxing库项目。

2. 从图书馆项目中创建一个新项目，它会正常工作。

   您也可以访问此link实施。

Answer 2

这意味着没有安装条码扫描仪。您有责任追上ActivityNotFoundException并处理它，例如提示用户安装它。

更好的是，在原始zxing项目中使用android-integration代码。这是两个类，它在一个简单的API中包含了所有这些细节。 http://code.google.com/p/zxing/wiki/ScanningViaIntent