Android使用Fragment搭建界面框架(二)
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使用ListView+List<Map<String, Object>>实现左边菜单栏导航，右边内容切换
1、定义Fragment基类，封装一些公共的方法和接口
BaseFragment.java
/** * @author john * @created 2016-4-13 */public abstract class BaseFragment extends Fragment{ protected View mRootView = null; @Override public final View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { if (mRootView == null) { int resId = getLayoutViewId(); mRootView = inflater.inflate(resId, container, false); mRootView.setOnKeyListener(rootViewKeyListener); findViews(mRootView); } return mRootView; } public void redKeyDown() { return; } public void greenKeyDown() { return; } public void yellowKeyDown() { return; } public void blueKeyDown() { return; } public void F1KeyDown() { return; } protected abstract int getLayoutViewId(); /** * 用于获取初始化子View, root是当前根view */ protected abstract void findViews(View root); public void setSelectItem(int position) { } public void setIsGridviewSelect(boolean isSelected){ } public boolean onKeyDown(int keyCode, KeyEvent event) { return false; } public boolean onKeyUp(int keyCode, KeyEvent event) { return false; } protected View.OnKeyListener rootViewKeyListener = new OnKeyListener() { @Override public boolean onKey(View arg0, int arg1, KeyEvent arg2) { if (arg2.getAction() == KeyEvent.ACTION_DOWN) { if (onKeyDown(arg1, arg2)) { return true; } } return false; } }; @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); } public interface OnGreenKeyDownListener { public void onGreenKeyDown(); } protected OnGreenKeyDownListener mOnGreenKeyDownListener = null; public void setOnGreenKeyDownListener(OnGreenKeyDownListener listener) { mOnGreenKeyDownListener = listener; } public int getCurItemInPage() { return 0; }}2、定义左边导航菜单抽象类，主要是为抽取共性的东西，继承BaseFragment
NaviFragment.java
/** * @author john * @created 2016-4-13 */public abstract class NaviFragment extends BaseFragment implements Constants{ protected GNavigationListener mNavListener; private ListView mNavListView; private NaviAdapter mListAdapter = null; @Override protected void findViews(View root) { mNavListView = (ListView) root.findViewById(getNavListViewId()); mNavListView.setOnKeyListener(rootViewKeyListener); } /** *返回ListView的id * */ public abstract int getNavListViewId(); /** *用于构造列表导航栏的数据的，必须包含"image","title"两项 */ protected abstract List<Map<String, Object>> constructListViewData(); private List<Map<String, Object>> mListData = null; @Override public void onActivityCreated(Bundle savedInstanceState) { super.onActivityCreated(savedInstanceState); if (mListAdapter == null) { mListAdapter = new NaviAdapter(getActivity(), null); } setListData(constructListViewData()); mNavListView.setAdapter(mListAdapter); mNavListView.setOnItemSelectedListener(mItemSelectedListener); } public void setListData(List<Map<String, Object>> data) { mListData = data; if (mListAdapter != null) { mListAdapter.setData(mListData); } } private OnItemSelectedListener mItemSelectedListener = new OnItemSelectedListener() { @Override public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) { if (mNavListener != null && arg0 != null) { mNavListener.onItemSelect(arg2); Log.d("NaviFragment", "onItemSelected"); } } @Override public void onNothingSelected(AdapterView<?> arg0) { } }; @Override public void setSelectItem(int position) { if (mNavListView != null && position < mNavListView.getCount() && position >= 0) { if (mNavListView.getSelectedItemPosition() == position && null != mNavListView.getSelectedItem()) { mNavListener.onItemSelect(position); } else { mNavListView.setSelection(position); } } } public ListView getNavListView() { return mNavListView; } public NaviAdapter getNavListAdapter() { return mListAdapter; } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (mNavListView == null) { return true; } switch (keyCode) { case KEY_OK: case KEY_CENTER: case KEY_RIGHT: Log.d("NaviFragment", "move focus to right first"); if (mNavListView.getSelectedItemPosition() >= 0) { if (mNavListener != null && null != mNavListView.getSelectedItem()) { mNavListener.onItemSelect(mNavListView.getSelectedItemPosition()); mNavListView.clearFocus(); mNavListener.setRightFocus(); } } return true; case KEY_UP: if (mNavListView.getSelectedItemPosition() == 0) { mNavListView.setSelection(mNavListView.getCount() - 1); return true; } break; case KEY_DOWN: if (mNavListView.getSelectedItemPosition() == (mNavListView.getCount() - 1)) { mNavListView.setSelection(0); return true; } break; } return super.onKeyDown(keyCode, event); } public void setNavigationListener(GNavigationListener listener) { mNavListener = listener; } public interface GNavigationListener { public void onItemSelect(int position); public void setRightFocus(); }}3、编写导航菜单适配器
NaviAdapter.java
/** * @author john * @created 2016-4-13 */class NaviAdapter extends BaseAdapter{ private Context mContext = null; private List<Map<String, Object>> mListData = null; private LayoutInflater inflater = null; public NaviAdapter(Context context, List<Map<String, Object>> list) { mContext = context; inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); this.mListData = list; } public void setData(List<Map<String, Object>> list) { this.mListData = list; notifyDataSetChanged(); } @Override public int getCount() { return mListData.size(); } @Override public boolean isEnabled(int position) { try { if (mListData.get(position).get("isEnabled").toString().equals("1")) { return false; } else { return super.isEnabled(position); } } catch (Exception e) { return super.isEnabled(position); } } @Override public Map<String, Object> getItem(int position) { return mListData.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { ViewHolder viewHolder = null; if (null == convertView) { viewHolder = new ViewHolder(); convertView = inflater.inflate(R.layout.base_list_nav_item_layout, null); viewHolder.itemTitleName = (FontTextView) convertView.findViewById(R.id.item_name); convertView.setTag(viewHolder); } else { viewHolder = (ViewHolder) convertView.getTag(); } viewHolder.itemTitleName.setText(mListData.get(position).get("title").toString()); return convertView; } private class ViewHolder { FontTextView itemTitleName; }}
4、编写导航菜单，以节目编辑菜单为例
ChannelNavigationFragment.java
public class ChannelNavigationFragment extends NaviFragment{ private static final String TAG = ChannelNavigationFragment.class.getSimpleName(); @Override protected void findViews(View root) { super.findViews(root); Log.d(TAG, " findViews(View root) >>>"); } @Override protected int getLayoutViewId() { return R.layout.navigation_bar_in_media_center; } @Override public int getNavListViewId() { return R.id.media_nav_listview; } @Override protected List<Map<String, Object>> constructListViewData() { List<Map<String, Object>> data = new ArrayList<Map<String, Object>>(); Map<String, Object> map = new HashMap<String, Object>(); map.put("image", R.drawable.ic_channel_editchannel); map.put("title", getString(R.string.STR_EDIT_CHANNELS)); data.add(map); Map<String, Object> map1 = new HashMap<String, Object>(); map1.put("image", R.drawable.ic_channel_editfav); map1.put("title", getString(R.string.STR_EDIT_FAVORITES)); data.add(map1); Map<String, Object> map2 = new HashMap<String, Object>(); map2.put("image", R.drawable.ic_channel_user); map2.put("title", getString(R.string.STR_USER_CHNNEL)); data.add(map2); return data; }}5、Attach Activity
ChannelActivity.javapublic class ChannelActivity extends AlienBaseActivity implements GNavigationListener, Constants{ private final String TAG = "ChannelActivity"; private ChannelNavigationFragment mChannelNavigationFragment = null; private EditChannelsFragment mEditChannelsFragment = null; private EditFavoriteFragment mEditFavoriteFragment = null; private UserChannelFragment mUserChannelFragment = null; private BaseFragment mPreviousFragment = null; private BaseFragment mCurrentFragment = null; private int mInitShowPosition = 0; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_channel_layout); Bundle bundle = getIntent().getExtras(); if (bundle != null) { mInitShowPosition = bundle.getInt("position", 0); } initView(); initData(); } @Override public void onItemSelect(int position) { switch (position) { case 0: showEditChannelsFragment(); break; case 1: showEditFavoriteFragment(); break; case 2: showUserChannelFragment(); break; default: break; } } private void initView() { } private void initData() { mChannelNavigationFragment = new ChannelNavigationFragment(); mChannelNavigationFragment.setNavigationListener(this); switchContentView(null, mChannelNavigationFragment, R.id.left_layout); } @Override protected void onResume() { super.onResume(); } private void showEditChannelsFragment() { mPreviousFragment = mCurrentFragment; if (null == mEditChannelsFragment) { mEditChannelsFragment = new EditChannelsFragment(mChannelNavigationFragment); } mCurrentFragment = mEditChannelsFragment; switchContentView(mPreviousFragment, mCurrentFragment, R.id.right_layout); } private void showEditFavoriteFragment() { Log.d(TAG, " showEditFavoriteFragment()>>>> "); mPreviousFragment = mCurrentFragment; if (null == mEditFavoriteFragment) { mEditFavoriteFragment = new EditFavoriteFragment(mChannelNavigationFragment); } mCurrentFragment = mEditFavoriteFragment; switchContentView(mPreviousFragment, mCurrentFragment, R.id.right_layout); } private void showUserChannelFragment() { mPreviousFragment = mCurrentFragment; if (null == mUserChannelFragment) { mUserChannelFragment = new UserChannelFragment(mChannelNavigationFragment); } mCurrentFragment = mUserChannelFragment; switchContentView(mPreviousFragment, mCurrentFragment, R.id.right_layout); } @Override protected void onStop() { super.onStop(); } @Override protected void onDestroy() { super.onDestroy(); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { Log.d(TAG, " onKeyDown()>>> keyCode = " + keyCode); switch (keyCode) { case KEY_MENU: case KEY_BACK: case KEY_EXIT: finish(); OSDSettingManager.getInstance(this).setActivityExitAni(ChannelActivity.this); return true; case KEY_RED: if (redView.isShown()) { redKeyDown(); } return true; case KEY_GREEN: case KEY_GREEN_RECALL: if (greenView.isShown()) { greenKeyDown(); } return true; case KEY_YELLOW: if (yellowView.isShown()) { yellowKeyDown(); } return true; case KEY_BLUE: if (blueView.isShown()) { blueKeyDown(); } return true; } return false; } private void blueKeyDown() { if (mCurrentFragment != null) { mCurrentFragment.blueKeyDown(); } } private void yellowKeyDown() { if (mCurrentFragment != null) { mCurrentFragment.yellowKeyDown(); } } private void greenKeyDown() { if (mCurrentFragment != null) { mCurrentFragment.greenKeyDown(); } } private void redKeyDown() { if (mCurrentFragment != null) { mCurrentFragment.redKeyDown(); } } @Override public void setRightFocus() { if (mCurrentFragment != null) { mCurrentFragment.setSelectItem(mCurrentFragment.getCurItemInPage()); } }}6、附上switchContentView方法
public void switchContentView(BaseNaviFragment from, BaseNaviFragment to, int iId) { FragmentManager fm = getFragmentManager(); FragmentTransaction ft = fm.beginTransaction(); if (null == to) { return; } if (null == from) { ft.add(iId, to, ((Object) to).getClass().getName()).commit(); } else { if (from != to) { ft.addToBackStack(((Object) to).getClass().getName()); if (!to.isAdded()) { // 先判断是否被add过 ft.hide(from).add(iId, to, ((Object) to).getClass().getName()).commit(); // 隐藏当前的fragment，add下一个到Activity中 } else { ft.hide(from).show(to).commit(); // 隐藏当前的fragment，显示下一个 } } } }7、界面右侧负责显示内容的每个Fragment继承BaseFragment，实现自己的业务逻辑即可
8、界面整体布局
activity_channel_layout.xml<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/Black" > <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" > <com.mktech.alien.view.TextImageView android:id="@+id/textViewChannelHeader" android:layout_width="wrap_content" android:layout_height="80dp" android:layout_marginLeft="@dimen/menu_title_margin_left" /> <!-- 这里用fragment view 比较好，不停的更新view --> <LinearLayout android:id="@+id/left_layout" android:layout_width="260dp" android:layout_height="220dp" android:layout_marginLeft="100dp" android:layout_marginTop="100dp" android:orientation="vertical" /> <!-- 这里用fragment view 比较好，不停的更新view --> <LinearLayout android:id="@+id/right_layout" android:layout_width="880dp" android:layout_height="match_parent" android:layout_alignParentRight="true" android:layout_marginBottom="52dp" android:layout_marginRight="47dp" android:layout_marginTop="52dp" android:orientation="vertical" android:paddingTop="28dp" /> <!-- 这里用来添加二级菜单的子View --> <LinearLayout android:id="@+id/info_layout" android:layout_width="wrap_content" android:layout_height="80dp" android:layout_alignParentRight="true" android:layout_marginBottom="4dp" android:layout_marginRight="70dp" android:gravity="bottom" android:orientation="horizontal" android:visibility="visible" > <com.mktech.alien.view.FontTextView android:id="@+id/found_sat" android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_marginBottom="5dp" android:gravity="center" android:paddingLeft="60dp" android:paddingRight="20dp" android:text="Found:" android:textColor="@color/white" android:textSize="@dimen/text_size_normal" android:visibility="gone" /> <com.mktech.alien.view.FontTextView android:id="@+id/satellite_info" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:gravity="center" android:paddingLeft="15dip" android:paddingRight="15dip" android:singleLine="true" android:textSize="@dimen/text_size_small" android:visibility="gone" /> <com.mktech.alien.view.FontTextView android:id="@+id/frequency_info" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:gravity="center" android:paddingLeft="15dip" android:paddingRight="15dip" android:singleLine="true" android:textSize="@dimen/text_size_small" android:visibility="gone" /> </LinearLayout> <LinearLayout android:layout_width="fill_parent" android:layout_height="60dp" android:layout_alignParentBottom="true" android:layout_gravity="center_vertical" android:layout_marginBottom="10dp" android:descendantFocusability="blocksDescendants" android:gravity="center_vertical" android:orientation="horizontal" > <com.mktech.alien.view.TextImageView android:id="@+id/redGroup" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_weight="1" android:gravity="center" /> <com.mktech.alien.view.TextImageView android:id="@+id/greenGroup" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_weight="1" android:gravity="center" /> <com.mktech.alien.view.TextImageView android:id="@+id/yellowGroup" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_weight="1" android:gravity="center" /> <com.mktech.alien.view.TextImageView android:id="@+id/blueGroup" android:layout_width="0dip" android:layout_height="wrap_content" android:layout_gravity="center" android:layout_weight="1" android:gravity="center" /> </LinearLayout> </RelativeLayout></FrameLayout>
9、最终效果
http://v.youku.com/v_show/id_XMTcxMTM3NDgyMA==.html?beta&
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