无法获取代码。

Question

我正在研究一个应用程序，它在点击按钮时调用ZXing扫描仪。这很好，在扫描代码后会弹出一个新的活动，它应该会得到扫描后的代码，所以我可以对它进行编辑，以便从该产品中获得多少希望，等等。但是我不知道如何获得扫描的代码码。以下是我迄今为止：

package org.example.sudoku; 

import android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.content.Intent; 
import android.app.AlertDialog; 

public class Sudoku extends Activity implements OnClickListener { 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 
    // Set up click listeners for all the buttons 

     View exitButton = findViewById(R.id.exit_button); 
     exitButton.setOnClickListener(this); 
     View scanButton = findViewById(R.id.scan_button); 
     scanButton.setOnClickListener(this); 
     View editButton = findViewById(R.id.about_button); 
     editButton.setOnClickListener(this); 

    } 
    public void onClick(View v) { 
     switch (v.getId()) { 
     case R.id.scan_button: 
      Intent intent = new Intent("com.google.zxing.client.android.SCAN"); 
      intent.putExtra("com.google.zxing.client.android.SCAN.SCAN_MODE", "QR_CODE_MODE"); 
      startActivityForResult(intent, 0); 
     break; 
     case R.id.about_button: 
      Intent about = new Intent(this.getApplicationContext(),About.class); 
      Bundle b = new Bundle(); 

      b.putString("key","blablabla"); 


      about.putExtras(b); 
      startActivityForResult(about, 0); 
     break; 
     case R.id.exit_button: 
      finish(); 
     break; 


        } 
       } 



    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 
       Intent result = new Intent(this.getApplicationContext(),Result.class); 
       Bundle b = new Bundle(); 

       b.putString("contents",contents); 


       intent.putExtras(b); 
       startActivityForResult(result, 0); 



      } else if (resultCode == RESULT_CANCELED) { 
       // Handle cancel 
      } 
     } 
    } 

} 

和被叫活动命名结果

package org.example.sudoku; 

import android.app.Activity; 
import android.os.Bundle; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.*; 
import android.content.Intent; 

public class Result extends Activity implements OnClickListener { 
     @Override 
     protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.result); 
     View finishButton =findViewById(R.id.finish_button); 
     finishButton.setOnClickListener(this); 
     View nextButton =findViewById(R.id.next_button); 
     nextButton.setOnClickListener(this); 

     Bundle b = getIntent().getExtras(); 


     String product = b.getString("contens").toString(); 

     EditText et1 = (EditText) findViewById(R.id.edit_text); 

     et1.setText(product); 



     } 
     public void onClick(View v) { 
      switch (v.getId()) { 

      case R.id.finish_button: 
       finish(); 
      break; 
      case R.id.next_button: 
       Intent intent = new Intent("com.google.zxing.client.android.SCAN"); 
       intent.putExtra("com.google.zxing.client.android.SCAN.SCAN_MODE", "QR_CODE_MODE"); 
       startActivityForResult(intent, 0); 
       finish(); 
      break; 

      } 
     } 
     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 
        Intent result = new Intent(this.getApplicationContext(),Result.class); 
        Bundle b = new Bundle(); 
        b.putString("contents",contents); 
        intent.putExtras(b); 
        startActivityForResult(result, 0); 

       } else if (resultCode == RESULT_CANCELED) { 
        // Handle cancel 
       } 
      } 
     } 




} 

Answer 1

使用其集成的JAR。它提供了代码来处理您在上面尝试做的所有事情。你可以看到IntentIntegratorhere的源代码，这里是a sample project展示了它的用法。