protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        final ActionBar bar = getActionBar();        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);        bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE);        ......      }

bar.addTab(bar.newTab()                .setText("QuickSend")                .setTabListener(new TabListener<FragmentQuickSend>(                        this, "QuickSend", FragmentQuickSend.class)));

    public static class TabListener implements ActionBar.TabListener {public TabListener() {                   }public void onTabSelected(Tab tab, FragmentTransaction ft) {                   }        public void onTabUnselected(Tab tab, FragmentTransaction ft) {                   }        public void onTabReselected(Tab tab, FragmentTransaction ft) {                   }    }

package com.example.tabtest;import android.app.Activity;import android.os.Bundle;import android.view.LayoutInflater;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.ViewGroup;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;import android.app.ActionBar;import android.app.Fragment;import android.app.FragmentManager;import android.app.FragmentTransaction;import android.app.ActionBar.Tab;public class MainActivity extends Activity {    public String m_strFilePath;    FragmentQuickSend m_fragQSend;        @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        final ActionBar bar = getActionBar();        bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);        bar.setDisplayOptions(0, ActionBar.DISPLAY_SHOW_TITLE);        bar.addTab(bar.newTab()                .setText("Photo")                .setTabListener(new TabListener<FragmentPhoto>(                        this, "Photo", FragmentPhoto.class)));          }    @Override    protected void onSaveInstanceState(Bundle outState) {        super.onSaveInstanceState(outState);        outState.putInt("tab", getActionBar().getSelectedNavigationIndex());    }    public static class TabListener<T extends Fragment> implements ActionBar.TabListener {        private final Activity mActivity;        private final String mTag;        private final Class<T> mClass;        private final Bundle mArgs;        private Fragment mFragment;        public TabListener(Activity activity, String tag, Class<T> clz) {            this(activity, tag, clz, null);        }        public TabListener(Activity activity, String tag, Class<T> clz, Bundle args) {            mActivity = activity;            mTag = tag;            mClass = clz;            mArgs = args;            // Check to see if we already have a fragment for this tab, probably            // from a previously saved state.  If so, deactivate it, because our            // initial state is that a tab isn‘t shown.            mFragment = mActivity.getFragmentManager().findFragmentByTag(mTag);            if (mFragment != null && !mFragment.isDetached()) {                FragmentTransaction ft = mActivity.getFragmentManager().beginTransaction();                ft.detach(mFragment);                ft.commit();            }        }        public void onTabSelected(Tab tab, FragmentTransaction ft) {            if (mFragment == null) {                mFragment = Fragment.instantiate(mActivity, mClass.getName(), mArgs);                ft.add(android.R.id.content, mFragment, mTag);            } else {                ft.attach(mFragment);            }        }        public void onTabUnselected(Tab tab, FragmentTransaction ft) {            if (mFragment != null) {                ft.detach(mFragment);            }        }        public void onTabReselected(Tab tab, FragmentTransaction ft) {            Toast.makeText(mActivity, "Reselected!", Toast.LENGTH_SHORT).show();        }    }}

/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * *      http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package com.example.tabtest;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.util.Date;import com.example.tabtest.R;import android.app.Activity;import android.app.Fragment;import android.app.FragmentTransaction;import android.graphics.PixelFormat;import android.hardware.Camera;import android.os.AsyncTask;import android.os.Bundle;import android.os.Environment;import android.text.format.DateFormat;import android.util.Log;import android.view.KeyEvent;import android.view.LayoutInflater;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.view.ViewGroup;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;public class FragmentPhoto extends Fragment {            private final static String TAG = "CameraActivity";    private SurfaceView surfaceView;    private SurfaceHolder surfaceHolder;    private Camera camera;    private File picture;    private Button btnSave;        /**     * When creating, retrieve this instance‘s number from its arguments.     */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);           }    public void onActivityCreated(Bundle savedInstanceState) {          super.onActivityCreated(savedInstanceState);                setupViews();    }        /**     * The Fragment‘s UI is just a simple text view showing its     * instance number.     */    @Override    public View onCreateView(LayoutInflater inflater, ViewGroup container,            Bundle savedInstanceState) {        return inflater.inflate(R.layout.layout_photo, container, false);    }        private void setupViews(){        surfaceView = (SurfaceView) getView().findViewById(R.id.surCameraView); // Camera interface to instantiate components        surfaceHolder = surfaceView.getHolder(); // Camera interface to instantiate components        surfaceHolder.addCallback(surfaceCallback); // Add a callback for the SurfaceHolder        surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);                btnSave = (Button) getView().findViewById(R.id.btnPhoto);                btnSave.setOnClickListener(new OnClickListener() {                        @Override            public void onClick(View v) {                //takePic();            }        });    }    private void takePic() {        camera.stopPreview();// stop the preview        camera.takePicture(null, null, pictureCallback); // picture    }    // Photo call back    Camera.PictureCallback pictureCallback = new Camera.PictureCallback() {        //@Override        public void onPictureTaken(byte[] data, Camera camera) {            new SavePictureTask().execute(data);            camera.startPreview();        }    };    // save pic    class SavePictureTask extends AsyncTask<byte[], String, String> {        @Override        protected String doInBackground(byte[]... params) {            String fname = DateFormat.format("yyyyMMddhhmmss", new Date()).toString()+".jpg";                        Log.i(TAG, "fname="+fname+";dir="+Environment.getExternalStorageDirectory());            //picture = new File(Environment.getExternalStorageDirectory(),fname);// create file                        picture = new File(Environment.getExternalStorageDirectory()+"/"+fname);                        try {                FileOutputStream fos = new FileOutputStream(picture.getPath()); // Get file output stream                fos.write(params[0]); // Written to the file                fos.close();             } catch (Exception e) {                e.printStackTrace();            }            return null;        }    }    // SurfaceHodler Callback handle to open the camera, off camera and photo size changes    SurfaceHolder.Callback surfaceCallback = new SurfaceHolder.Callback() {        public void surfaceCreated(SurfaceHolder holder) {            Log.i(TAG, "surfaceCallback====");            camera = Camera.open(); // Turn on the camera            try {                camera.setPreviewDisplay(holder); // Set Preview            } catch (IOException e) {                camera.release();// release camera                camera = null;            }        }        public void surfaceChanged(SurfaceHolder holder, int format, int width,                int height) {            Log.i(TAG,"====surfaceChanged");            Camera.Parameters parameters = camera.getParameters(); // Camera parameters to obtain            parameters.setPictureFormat(PixelFormat.JPEG);// Setting Picture Format//                parameters.set("rotation", 180); // Arbitrary rotation            camera.setDisplayOrientation(0);//                parameters.setPreviewSize(400, 300); // Set Photo Size            camera.setParameters(parameters); // Setting camera parameters            camera.startPreview(); // Start Preview        }        public void surfaceDestroyed(SurfaceHolder holder) {            Log.i(TAG,"====surfaceDestroyed");            camera.stopPreview();// stop preview            camera.release(); // Release camera resources            camera = null;        }    };}

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >    <SurfaceView        android:id="@+id/surCameraView"        android:layout_width="match_parent"        android:layout_height="139dp"        android:layout_weight="0.00" />    <Button        android:id="@+id/btnPhoto"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_weight="0.08"        android:text="Button" />    <TextView        android:id="@+id/textView1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_weight="0.19"        android:text="          " /></LinearLayout>