Android ZXing集成無法啓動活動錯誤

Question

我不願意發表這個問題後，我的頭撞我的桌子和雕刻雖然相關帖子在stackoverflow，但只是不能解決問題。所以我們就在這裏。我正在嘗試將ZXing整合到我的Android應用程序中，因爲許多開發人員嘗試過，但始終得到相同的錯誤：Unable to start activity ComponentInfo。我添加了core.jar，並將活動和相機權限添加到清單。我知道這裏有一些非常簡單的東西我很想去做。嘗試使用意圖進行掃描時出現以下錯誤。我已經試過了通過ZXing庫並將所有switch語句更改爲if/else。我也曾嘗試在斑馬線佈局將我的包名稱，如這裏建議：Android ZXing implementation

的Java：

import android.os.Bundle; 
import android.app.Activity; 
import android.content.Intent; 
import android.view.Menu; 
import android.view.MenuItem; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.widget.TextView; 

public class MainMenu extends Activity { 

Button btn_scan 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main_menu); 

    btn_scan = (Button) findViewById(R.id.btn_scanbarcode); 
    btn_scan.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 

      Intent intent = new Intent(
        "com.google.zxing.client.android.SCAN"); 
      intent.putExtra("SCAN_MODE", "QR_CODE_MODE"); 
      startActivityForResult(intent, 0); 

     } 
    }); 

public void onActivityResult(int requestCode, int resultCode, Intent intent) { 
    if (requestCode == 0) { 
     if (resultCode == RESULT_OK) { 
      String contents = intent.getStringExtra("SCAN_RESULT"); 
      String format = intent.getStringExtra("SCAN_RESULT_FORMAT"); 
      // Handle successful scan 
     } else if (resultCode == RESULT_CANCELED) { 
      // Handle cancel 
     } 
    } 
} 

} 

清單

<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> 

logcat的：

11-30 10:54:04.713: E/AndroidRuntime(15452): FATAL EXCEPTION: main 
11-30 10:54:04.713: E/AndroidRuntime(15452): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.testapp/com.google.zxing.client.android.CaptureActivity}: android.view.InflateException: Binary XML file line #27: Error inflating class com.android.testapp 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2240) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2275) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.app.ActivityThread.access$600(ActivityThread.java:139) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1277) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.os.Handler.dispatchMessage(Handler.java:99) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.os.Looper.loop(Looper.java:156) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.app.ActivityThread.main(ActivityThread.java:5060) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at java.lang.reflect.Method.invokeNative(Native Method) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at java.lang.reflect.Method.invoke(Method.java:511) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at dalvik.system.NativeStart.main(Native Method) 
11-30 10:54:04.713: E/AndroidRuntime(15452): Caused by: android.view.InflateException: Binary XML file line #27: Error inflating class com.android.testapp 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:691) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.view.LayoutInflater.rInflate(LayoutInflater.java:739) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:278) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.app.Activity.setContentView(Activity.java:1897) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at com.google.zxing.client.android.CaptureActivity.onCreate(CaptureActivity.java:143) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.app.Activity.performCreate(Activity.java:4543) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1071) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2196) 
11-30 10:54:04.713: E/AndroidRuntime(15452): ... 11 more 
11-30 10:54:04.713: E/AndroidRuntime(15452): Caused by: java.lang.ClassNotFoundException: com.android.testapp 
11-30 10:54:04.713: E/AndroidRuntime(15452): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at java.lang.ClassLoader.loadClass(ClassLoader.java:501) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at java.lang.ClassLoader.loadClass(ClassLoader.java:461) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.view.LayoutInflater.createView(LayoutInflater.java:552) 
11-30 10:54:04.713: E/AndroidRuntime(15452): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:680) 
11-30 10:54:04.713: E/AndroidRuntime(15452): ... 21 more 

Answer 1

您已經將zxing項目導入爲一個庫並去除不需要的類。這個過程很痛苦，但我得到了它的工作。

Answer 2

這裏有幾個問題，其中你試圖在你的應用程序中聲明我們的活動和命名空間。請不要這樣做。它不適合你，併爲我們的用戶造成問題。

你似乎想這樣做：https://github.com/zxing/zxing/wiki/Scanning-Via-Intent

如果是這樣它的方式很容易，你在這裏做了。