實施zxing時出錯

Question

我正在使用教程將zxing代碼實現到我自己的應用程序中。我遵循可用的代碼，但是我收到一個錯誤，任何人都可以建議如何修復錯誤嗎？

package meena.com.android; 

import android.app.Activity; 
import android.os.Bundle; 
import android.widget.Button; 

public class MeenaActivity extends Activity { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     Button but_previous=(Button)findViewById(R.id.button1); 
     but_previous.setOnClickListener(new OnClickListener() { 
       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 
          } 
         } 
        } 



    } 
     }); 
    } 

} 

的代碼，並顯示錯誤的行是： 公共無效onActivityResult（INT requestCode，INT發送resultCode，意圖意圖）; {

我被告知有語法錯誤和錯位的構造函數，但是這是給出的代碼，我不確定如何修復它。我用過的教程是「http://damianflannery.wordpress.com/2011/06/13/integrate-zxing-barcode-scanner-into-your-android-app-natively-using-eclipse/」

Answer 1

onActivityResult（）是Activity類的一個方法。爲了覆蓋它，你需要將這塊代碼移到創建塊上。像這樣：

package meena.com.android; 

import android.app.Activity; 
import android.os.Bundle; 
import android.widget.Button; 

public class MeenaActivity extends Activity { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
     Button but_previous=(Button)findViewById(R.id.button1); 
     but_previous.setOnClickListener(new OnClickListener() { 
       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 
      } 
     } 
    } 

}