Android使用fragment实现左侧导航

使用简单的fragment实现左侧导航，供大家参考，具体内容如下

先上效果图：

MainActivity.java

public class MainActivity extends FragmentActivity {
 // private Handler handler;
 private ViewPager fragmentViewPager;
 private ListView leftListView;
 private List<Fragment> fragmentlist;
 private Fragment1 fragment1;
 private Fragment2 fragment2;
 private ArrayList<String> leftlist = new ArrayList<String>();// left list 

 private ListAdapter listAdapter = null;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  fragmentViewPager = (ViewPager) findViewById(R.id.fragmentViewPager);
  leftListView = (ListView) findViewById(R.id.leftListView); 

  initDatas();// left初始化。
  initDatasViewPager();
  // aTextViewCallBack back = (aTextViewCallBack)
  // findViewById(R.id.aTextViewCallBack);
  // back.setCalBack(new calBack() {
  // @Override
  // public void onclick() {
  // // TODO Auto-generated method stub
  // Toast.makeText(MainActivity.this, "这是回调的点击事件哦~",
  // Toast.LENGTH_LONG).show();
  // }
  // });
  //
  // new Thread(new Runnable() {
  //
  // @Override
  // public void run() {
  // // TODO Auto-generated method stub
  // String str = "http://www.easyicon.net/";
  // String st = getHtmlByURL.getHtmlByURL(str);
  // Message msg = handler.obtainMessage(0,st);
  // handler.sendMessage(msg);
  // }
  // }).start();
  // handler = new Handler() {
  // public void handleMessage(Message msg) {
  // super.handleMessage(msg);
  // String x = msg.obj.toString();
  // Log.i("GEtHtml", x);
  // };
  // };
 } 

 public void initDatas() {
  for (int i = 0; i < 5; i++) {
   leftlist.add("第" + i + "个");
   Log.i("65", leftlist.get(i).toString());
  } 

  ArrayList<ButtonView> buttonListView = new ArrayList<ButtonView>();
  ButtonView a = new ButtonView(R.string.pay_name_weixin);
  buttonListView.add(a);
  ButtonView b = new ButtonView(R.string.pay_name_alipay);
  buttonListView.add(b); 

  listAdapter = new ListAdapter(buttonListView);
  leftListView.setAdapter(listAdapter);
  leftListView.setDividerHeight(0);
  // listview点击事件
  leftListView.setOnItemClickListener(new OnItemClickListener() {
   @Override
   public void onItemClick(AdapterView<?> parent, View view,
     int position, long id) {
    Log.e("tag", Integer.toString(position));
    // TODO Auto-generated method stub
    listAdapter.setSelectedPosition(position);
    listAdapter.notifyDataSetInvalidated();
    if (position % 2 == 1) {
     fragmentViewPager.setCurrentItem(1);
    }else{
     fragmentViewPager.setCurrentItem(0);
    }
   }
  });
 } 

 public void initDatasViewPager() {
  fragmentlist = new ArrayList<Fragment>();
  fragment1 = new Fragment1();//
  fragment2 = new Fragment2();//
  fragmentlist.add(fragment1);
  fragmentlist.add(fragment2);
  fragmentViewPager.setAdapter(new FragmentAdapter(
    getSupportFragmentManager(), fragmentlist, this));
  fragmentViewPager.setOnPageChangeListener(new MyOnPageChangeListener());
 } 

 // set OnPageChangeListener in inner class
 class MyOnPageChangeListener implements OnPageChangeListener { 

  @Override
  public void onPageScrollStateChanged(int arg0) {
   // TODO Auto-generated method stub 

  } 

  @Override
  public void onPageScrolled(int arg0, float arg1, int arg2) {
   // TODO Auto-generated method stub 

  }
  /**
   * 当点击不同id的ViewPage的时候才触发
   * */
  @Override
  public void onPageSelected(int arg0) {
   Log.e("tag1", Integer.toString(arg0));
   switch (arg0) {
   case 0: 

    break;
   case 1: 

    break;
   case 2: 

    break;
   }
  } 

 } 

 public class ListAdapter extends BaseAdapter { 

  ArrayList<ButtonView> arrayList = null;
  LayoutInflater inflater;
  View view;
  ButtonLayoutHolder buttonLayoutHolder;
  LinearLayout buttonLayout = null;
  TextView buttonText = null; 

  private int selectedPosition = -1;// 选中的位置 

  public ListAdapter(ArrayList<ButtonView> buttonListView) {
   // TODO Auto-generated constructor stub
   arrayList = buttonListView;
  } 

  @Override
  public int getCount() {
   // TODO Auto-generated method stub
   return arrayList.size();
  } 

  @Override
  public Object getItem(int position) {
   // TODO Auto-generated method stub
   return arrayList.get(position);
  } 

  @Override
  public long getItemId(int position) {
   // TODO Auto-generated method stub
   return position;
  } 

  public void setSelectedPosition(int position) {
   selectedPosition = position;
  } 

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
   // TODO Auto-generated method stub
   inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
   view = inflater.inflate(R.layout.button_layout, null, false);
   buttonLayoutHolder = (ButtonLayoutHolder) view.getTag(); 

   if (buttonLayoutHolder == null) {
    buttonLayoutHolder = new ButtonLayoutHolder();
    buttonLayoutHolder.buttonLayout = (LinearLayout) view
      .findViewById(R.id.LinearLayoutButton);
    buttonLayoutHolder.textView = (TextView) view
      .findViewById(R.id.TextViewButton);
    view.setTag(buttonLayoutHolder);
   }
   buttonLayout = buttonLayoutHolder.buttonLayout;
   buttonText = buttonLayoutHolder.textView;
   if (selectedPosition == position) {
    buttonText.setSelected(true);
    buttonText.setPressed(true);
    buttonLayout.setBackgroundColor(Color.parseColor("#e4e8e9"));
    buttonText.setTextColor(Color.BLUE); 

   } else {
    buttonText.setSelected(false);
    buttonText.setPressed(false);
    buttonLayout.setBackgroundColor(Color.parseColor("#2f4471"));
    buttonText.setTextColor(Color.WHITE); 

   }
   buttonText.setHeight(40);
   buttonText.setText(arrayList.get(position).textViewId);
   return view; 

  } 

 };
}
class ButtonView {
 int textViewId; 

 ButtonView(int tId) {
  textViewId = tId;
 }
} 

class ButtonLayoutHolder {
 LinearLayout buttonLayout;
 TextView textView;
}
FragmentAdapter.java
[java] view plain copy
public class FragmentAdapter extends FragmentPagerAdapter{
 private List<Fragment> listmVp;
 private Context context; 

 public FragmentAdapter(FragmentManager fm, List<Fragment> listmVp,Context context) {
  super(fm);
  this.listmVp = listmVp;
  this.context = context;
 }
 @Override
 public int getCount() {
  // TODO Auto-generated method stub
  return listmVp.size();
 } 

 @Override
 public Fragment getItem(int arg0) {
  // TODO Auto-generated method stub
  return listmVp.get(arg0);
 }
}

Fragment1.java

public class Fragment1 extends Fragment{
 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container,
   Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  return inflater.inflate(R.layout.fragment1, container, false);
 }
}

Fragment2.java

public class Fragment2 extends Fragment{
 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container,
   Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  return inflater.inflate(R.layout.fragment2, container, false);
 }
}

源码地址：使用fragment实现左侧导航

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。

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