Question

我正在尝试制作可在手机上扫描条形码的应用程序。所以我尝试了下面的代码，但它给了我这个错误

11-28 11:18:45.750: E/AndroidRuntime(772): FATAL EXCEPTION: main
11-28 11:18:45.750: E/AndroidRuntime(772): android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.google.zxing.client.android.SCAN (has extras) }
11-28 11:18:45.750: E/AndroidRuntime(772):  at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1622)

我仍然在我的笔记本电脑上使用模拟器和外置摄像头尝试这个。所以，请你帮帮我

这是代码：

public class MainActivity extends Activity {
      @Override
      public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        HandleClick hc = new HandleClick();
        findViewById(R.id.butQR).setOnClickListener(hc);
        findViewById(R.id.butProd).setOnClickListener(hc);
        findViewById(R.id.butOther).setOnClickListener(hc);
      }
      private class HandleClick implements OnClickListener{
        public void onClick(View arg0) {

            Intent intent = new Intent("com.google.zxing.client.android.SCAN");
          switch(arg0.getId()){
            case R.id.butQR:
              intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
            break;
            case R.id.butProd:
              intent.putExtra("SCAN_MODE", "PRODUCT_MODE");
            break;
            case R.id.butOther:
              intent.putExtra("SCAN_FORMATS", "CODE_39,CODE_93,CODE_128,DATA_MATRIX,ITF,CODABAR");
            break;
          }
          startActivityForResult(intent, 0);    //Barcode Scanner to scan for us
        }
      }
      public void onActivityResult(int requestCode, int resultCode, Intent intent) {
        if (requestCode == 0) {
          TextView tvStatus=(TextView)findViewById(R.id.tvStatus);
          TextView tvResult=(TextView)findViewById(R.id.tvResult);
          if (resultCode == RESULT_OK) {
            tvStatus.setText(intent.getStringExtra("SCAN_RESULT_FORMAT"));
            tvResult.setText(intent.getStringExtra("SCAN_RESULT"));
          } else if (resultCode == RESULT_CANCELED) {
            tvStatus.setText("Press a button to start a scan.");
            tvResult.setText("Scan cancelled.");
          }
        }
      }
    }

这是Manifest

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="sdk.example.test"
    android:versionCode="1"
    android:versionName="1.0" >
    <uses-permission android:name="android.permission.INTERNET" />

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" 
        >
        <activity
            android:name="sdk.example.test.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>
    </application>

</manifest>

Answer 1

首先安装此应用的手机上未安装阅读条形码的应用。

click here

Answer 2

你需要使用ScanningViaIntent来处理所有事情。非常好:)）

如果未安装条形码阅读器应用程序，则条形码扫描不起作用

2 个答案: