SlidingMenu的使用2

public class MainActivity extends FragmentActivity implements OnItemClickListener {

    private SlidingMenu mSlidingMenu;
    private Fragment mCurrentFragment;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // requestWindowFeature(Window.FEATURE_NO_TITLE);
        setContentView(R.layout.activity_main);

        mSlidingMenu = new SlidingMenu(this);
        mSlidingMenu.setMenu(R.layout.empty_left_menu);
        mSlidingMenu.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
        mSlidingMenu.setBehindWidth((int) (getResources().getDisplayMetrics().widthPixels * 0.75f));
        mSlidingMenu.setMode(SlidingMenu.LEFT);
        mSlidingMenu.attachToActivity(this, 0);

        LeftFragment leftFragment = new LeftFragment();
        leftFragment.setOnItemClickListener(this);

        ContentFragment contentFragment = new ContentFragment();

        FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
        ft.replace(R.id.left_empty_layout, leftFragment);
        ft.replace(R.id.content_empty_layout, contentFragment);
        ft.commit();

        mCurrentFragment = contentFragment;
    }

    @Override
    public void onItemClick(String str) {
        mSlidingMenu.showContent();

        if ("btn1".equals(str)) {
            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
            mCurrentFragment = new ContentFragment();
            ft.replace(R.id.content_empty_layout, mCurrentFragment);
            ft.commit();
        } else if ("btn2".equals(str)) {
            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
            mCurrentFragment = new SettingFragment();
            ft.replace(R.id.content_empty_layout, new SettingFragment());
            ft.commit();
        } else if ("btn3".equals(str)) {
            FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
            mCurrentFragment = new BuyFragment();
            ft.replace(R.id.content_empty_layout, new BuyFragment());
            ft.commit();
        } else {
            if (mCurrentFragment instanceof ContentFragment) {
                ContentFragment content = (ContentFragment) mCurrentFragment;
                content.changeContent(str);
            }
        }
    }
}

public class LeftFragment extends Fragment implements OnClickListener {

    public static interface OnItemClickListener {
        public void onItemClick(String str);
    }

    private OnItemClickListener mClickListener;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fgm_left, container, false);
    }

    public void setOnItemClickListener(OnItemClickListener l) {
        mClickListener = l;
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);

        View view = getView();

        LinearLayout parent = (LinearLayout) view.findViewById(R.id.parent);

        int childCount = parent.getChildCount();

        for (int i = 0; i < childCount; i++) {
            View child = parent.getChildAt(i);
            child.setOnClickListener(this);
        }
    }

    @Override
    public void onClick(View v) {
        Button btn = (Button) v;
        String str = (String) btn.getText();

        if (mClickListener != null) {
            mClickListener.onItemClick(str);
        }
    }
}

public class ContentFragment extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fgm_content, container, false);
    }

    public void changeContent(String txt) {
        TextView tv = (TextView) getView().findViewById(R.id.content_tv);
        tv.setText(txt);
    }
}

public class BuyFragment extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fgm_buy, container, false);
    }
}

public class SettingFragment extends Fragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        return inflater.inflate(R.layout.fgm_setting, container, false);
    }
}