Android programming call Camera and album functions detailed explanation

<LinearLayout xmlns:andro
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"
  android:orientation="vertical" >
  <Button
    android:
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Photograph" />
  <Button
    android:
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Photo Album" />
  <ImageView
    android:
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_gravity="center"
    android:src="@drawable/ic_launcher" />
</LinearLayout>

package ;
import ;
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import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
public class CameraShowActivity extends Activity {
  private ImageView mImageView;
  private Button mButtonCamera;
  private Button mButtonPhoto;
  @Override
  public void onCreate(Bundle savedInstanceState) {
    (savedInstanceState);
    setContentView(.activity_camera_show);
    mImageView = (ImageView) (.imageview_preview);
    mButtonCamera = (Button) (.button_cameraButton);
    mButtonPhoto = (Button) (.button_photoButton);
    (new OnClickListener() { //Open Camera      @Override
      public void onClick(View v) {
        Intent intent = new Intent(".IMAGE_CAPTURE");
        (MediaStore.EXTRA_OUTPUT,
            (new File(Environment
                .getExternalStorageDirectory(), "")));
        (MediaStore.EXTRA_VIDEO_QUALITY, 0);
        startActivityForResult(intent, 10);
      }
    });
    (new OnClickListener() { //Get photo album      @Override
      public void onClick(View v) {
        Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
        (Intent.CATEGORY_OPENABLE);
        ("image/*");
        ("crop", "true");
        ("aspectX",1);
        ("aspectY",1);
        ("outputX", 80);
        ("outputY", 80);
        ("return-data",true);
        startActivityForResult(intent, 11);
      }
    });
  }
  @Override
  protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == 10 && resultCode == Activity.RESULT_OK) {
      ((new File(
          (), "")
          .getAbsolutePath()));
      ("data-->"+data);
    }else if (requestCode == 11 && resultCode ==Activity.RESULT_OK) {
      ("data2-->"+data);
    }
  }
}

<manifest xmlns:andro
  package=""
  android:versionCode="1"
  android:versionName="1.0" >
  <uses-sdk
    android:minSdkVersion="8"
    android:targetSdkVersion="15" />
  <uses-permission android:name="" />
  <uses-permission android:name=".MOUNT_UNMOUNT_FILESYSTEMS" />
  <uses-permission android:name=".WRITE_EXTERNAL_STORAGE" />
  <uses-feature android:name="" />
  <uses-feature android:name="" />
  <application
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <activity
      android:name=".CameraShowActivity"
      android:label="@string/title_activity_camera_show" >
      <intent-filter>
        <action android:name="" />
        <category android:name="" />
      </intent-filter>
    </activity>
  </application>
</manifest>

Intent intent=new Intent(Intent.ACTION_GET_CONTENT);
(Intent.CATEGORY_OPENABLE);
("image/*");
("crop", "true");
("aspectX", 1);
("aspectY", 1);
("outputX", 80);
("outputY", 80);
("return-data", true);
startActivityForResult(intent, 0);

@Override
 protected void onActivityResult(int requestCode, int resultCode, Intent data) {
 (resultCode);
 Bitmap cameraBitmap = (Bitmap) ().get("data");
 (requestCode, resultCode, data);
 }