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copied!<p>If any one have the same issue here is my solution.</p> <pre><code>package com.example.testingcodereading; import android.content.Intent; import android.os.Bundle; import android.support.v4.app.Fragment; import android.support.v4.app.FragmentActivity; import android.support.v4.app.FragmentManager; public class MainActivity extends FragmentActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_fragment); FragmentManager fm = getSupportFragmentManager(); Fragment f = fm.findFragmentById(R.id.fragmentContainer); if (f == null) { f = MainFragment.newInstance("Start Application"); fm.beginTransaction().add(R.id.fragmentContainer, f).commit(); } } @Override protected void onActivityResult(int requestCode, int resultCode, Intent intent) { super.onActivityResult(requestCode, resultCode, intent); System.out.println("the code is catch"); IntentResult scanResult = IntentIntegrator.parseActivityResult( requestCode, resultCode, intent); // handle scan result if (scanResult != null) { FragmentManager fm = getSupportFragmentManager(); Fragment newFrame = MainFragment.newInstance(scanResult.toString()); fm.beginTransaction().replace(R.id.fragmentContainer, newFrame).commit(); } } } </code></pre> <hr> <pre><code>package com.example.testingcodereading; import android.content.Intent; import android.content.pm.ActivityInfo; import android.content.pm.ResolveInfo; import android.os.Bundle; import android.support.v4.app.Fragment; import android.test.suitebuilder.annotation.MediumTest; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.Button; import android.widget.TextView; public class MainFragment extends Fragment { private static final String EXTRA_CODE = "com.example.testingcodereading.code"; private Button mButtonXZing; private TextView mTextView; public static MainFragment newInstance(String code) { Bundle args = new Bundle(); args.putSerializable(EXTRA_CODE, code); MainFragment fragment = new MainFragment(); fragment.setArguments(args); return fragment; } @Override public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState){ View v = inflater.inflate(R.layout.fragment_main, parent, false); mTextView = (TextView) v.findViewById(R.id.text_code); mTextView.setText((String) getArguments().getSerializable(EXTRA_CODE)); mButtonXZing = (Button) v.findViewById(R.id.button_xzing); mButtonXZing.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { IntentIntegrator integrator = new IntentIntegrator(getActivity()); integrator.initiateScan(); } }); return v; } @Override public void onActivityResult(int requestCode, int resultCode, Intent intent) { super.onActivityResult(requestCode, resultCode, intent); System.out.println("never here"); IntentResult scanResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, intent); if (scanResult != null) { // handle scan result } // else continue with any other code you need in the method } } </code></pre>

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