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android 导航总结

2024-08-03 00:27:53   215人阅读

1、继承TabActivity

package com.example.yqqmobilesafe;

import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TabHost;
import android.widget.TextView;

public class HomeActivity extends TabActivity {
	 private TabHost mTabHost;
	
	    @Override
	    protected void onCreate(Bundle savedInstanceState) {
	        super.onCreate(savedInstanceState);
	        setContentView(R.layout.activity_home);
	        initViews();
	    }


	    private void initViews() {
			mTabHost=getTabHost();//获取到最外层的容器.
			
			Intent intent1=new Intent(this,OftenUseFunctionActivity.class);
			mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator("常用功能",getResources().getDrawable(R.drawable.accelerate_selector)).setContent(intent1));
			
			Intent intent2=new Intent(this,AppManagerActivity.class);
			mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator("软件管理",getResources().getDrawable(R.drawable.soft_manager_selector)).setContent(intent2));
			
			
			Intent intent3=new Intent(this,SafeProtectActivity.class);
			mTabHost.addTab(mTabHost.newTabSpec("tab3").setIndicator("安全防护",getResources().getDrawable(R.drawable.security_selector)).setContent(intent3));
			
			Intent intent4=new Intent(this,PrivateProtectActivity.class);
			mTabHost.addTab(mTabHost.newTabSpec("tab4").setIndicator("隐私保护",getResources().getDrawable(R.drawable.profile_selector)).setContent(intent4));
			

		
			
		}
	  
		@Override
	    public boolean onCreateOptionsMenu(Menu menu) {
	        // Inflate the menu; this adds items to the action bar if it is present.
	        getMenuInflater().inflate(R.menu.home, menu);
	        return true;
	    }
	    
	}

布局文件：
activity_home.xml
<pre name="code" class="html"><TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#ffffff"
     >

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

        <TabWidget
            android:layout_alignParentBottom="true"
            android:id="@android:id/tabs"
            android:layout_width="fill_parent"
            android:background="#11ff52"
            android:layout_height="wrap_content" >
        </TabWidget>

        <FrameLayout
            android:layout_marginBottom="60dip"
            android:id="@android:id/tabcontent"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent" >
        </FrameLayout>
    </RelativeLayout>

</TabHost>

效果如下:

<img src=http://www.mamicode.com/"http://img.blog.csdn.net/20141118190520652?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdTAxNDYwMDQzMg==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center" alt="" />>
2、没有继承TabActivity
/**
	 * 初始化UI组件
	 */
	private void initViews() {
		setContentView(R.layout.activity_home);
		mTabHost=(TabHost)this.findViewById(R.id.tabhost);
		mTabHost.setup();
		mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator("第一个",getResources().getDrawable(R.drawable.unresloved_selector)).setContent(R.id.lv_leave_infos));
		mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator("第二个", getResources().getDrawable(R.drawable.leave_apply_selector)).setContent(R.id.ll_tb_leave_apply));
		mTabHost.addTab(mTabHost.newTabSpec("tab3").setIndicator("第三个", getResources().getDrawable(R.drawable.exception_note_selector)).setContent(R.id.ll_tb_leave_excepiton_note));
		
		mTabHost.setCurrentTabByTag("tab1");
		mleaveInfos=new ArrayList<LeaveInfo>();
		mLeaveInfosDao=new LeaveInfosDao(HomeActivity.this);
		mAcceptLeaveInfoDao=new AcceptLeaveInfosDao(HomeActivity.this);
		mRejectLeaveInfoDao=new RejectLeaveInfosDao(HomeActivity.this);
		//mLLloading=(View)this.findViewById(R.id.ll_loading);
		mLVleaveInfos=(ListView)this.findViewById(R.id.lv_leave_infos);
		fillData();
		
		
	}

该acticity对应的布局文件：
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/tabhost"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginBottom="1dp"
    android:background="#ffffff"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" >

        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" >

            <!-- 第一个 -->

            <LinearLayout
                android:id="@+id/ll_tb_unresolve"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical" >

                <RelativeLayout
                    android:layout_width="match_parent"
                    android:layout_height="50dp"
                    android:background="@drawable/tabitem_bgpress" >

                    <TextView
                        android:id="@+id/tv_app_sys"
                        android:layout_width="wrap_content"
                        android:layout_height="45dp"
                        android:layout_marginLeft="5dp"
                        android:gravity="center_vertical"
                        android:text="@string/ehr_manager_system"
                        android:textColor="#ffffff" />

                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:layout_alignParentRight="true"
                        android:layout_alignParentTop="true"
                        android:clickable="true"
                        android:onClick="addInfo"
                        android:src=http://www.mamicode.com/"@drawable/add_selector" />>
给导航设置监听：
/**
	 * 设置监听
	 */
	private void setListener(){
		mTabHost.setOnTabChangedListener(new TabHost.OnTabChangeListener() {

			@Override
			public void onTabChanged(String tabId) {
				if(tabId.equals("tab1")){
					//mLVleaveInfos=(ListView)findViewById(R.id.lv_leave_infos);
					fillData();
					Log.i("导航","第一个");
					
				}else if(tabId.equals("tab2")){
					mLVleaveInfosAccept=(ListView)findViewById(R.id.lv_leave_info_accept);
					fillDataAccept();
					showDeleteOrNo();//是否删除记录
					Log.i("导航","第二个");
					
				}else if(tabId.equals("tab3")){
					mLVleaveInfoReject=(ListView)findViewById(R.id.lv_leave_info_reject);
					fillDataReject();
					showDeleteOrNoReject();//是否删除记录
					Log.i("导航","第三个");
					
				}
				
			}
			
			
		});
	


3、ViewPager实现导航效果
public class MainWeixin extends Activity {
	
	public static MainWeixin instance = null;
	 
	private ViewPager mTabPager;	
	private ImageView mTabImg;// 动画图片
	private ImageView mTab1,mTab2,mTab3,mTab4;
	private int zero = 0;// 动画图片偏移量
	private int currIndex = 0;// 当前页卡编号
	private int one;//单个水平动画位移
	private int two;
	private int three;
	private LinearLayout mClose;
    private LinearLayout mCloseBtn;
    private View layout;	
	private boolean menu_display = false;
	private PopupWindow menuWindow;
	private LayoutInflater inflater;
	//private Button mRightBtn;
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main_weixin);
         //启动activity时不自动弹出软键盘
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_HIDDEN); 
        instance = this;
        /*
        mRightBtn = (Button) findViewById(R.id.right_btn);
        mRightBtn.setOnClickListener(new Button.OnClickListener()
		{	@Override
			public void onClick(View v)
			{	showPopupWindow (MainWeixin.this,mRightBtn);
			}
		  });*/
        
        mTabPager = (ViewPager)findViewById(R.id.tabpager);
        mTabPager.setOnPageChangeListener(new MyOnPageChangeListener());
        
        mTab1 = (ImageView) findViewById(R.id.img_weixin);
        mTab2 = (ImageView) findViewById(R.id.img_address);
        mTab3 = (ImageView) findViewById(R.id.img_friends);
        mTab4 = (ImageView) findViewById(R.id.img_settings);
        mTabImg = (ImageView) findViewById(R.id.img_tab_now);
        mTab1.setOnClickListener(new MyOnClickListener(0));
        mTab2.setOnClickListener(new MyOnClickListener(1));
        mTab3.setOnClickListener(new MyOnClickListener(2));
        mTab4.setOnClickListener(new MyOnClickListener(3));
        Display currDisplay = getWindowManager().getDefaultDisplay();//获取屏幕当前分辨率
        int displayWidth = currDisplay.getWidth();
        int displayHeight = currDisplay.getHeight();
        one = displayWidth/4; //设置水平动画平移大小
        two = one*2;
        three = one*3;
        //Log.i("info", "获取的屏幕分辨率为" + one + two + three + "X" + displayHeight);
        
        //InitImageView();//使用动画
      //将要分页显示的View装入数组中
        LayoutInflater mLi = LayoutInflater.from(this);
        View view1 = mLi.inflate(R.layout.main_tab_weixin, null);
        View view2 = mLi.inflate(R.layout.main_tab_address, null);
        View view3 = mLi.inflate(R.layout.main_tab_friends, null);
        View view4 = mLi.inflate(R.layout.main_tab_settings, null);
        
      //每个页面的view数据
        final ArrayList<View> views = new ArrayList<View>();
        views.add(view1);
        views.add(view2);
        views.add(view3);
        views.add(view4);
      //填充ViewPager的数据适配器
        PagerAdapter mPagerAdapter = new PagerAdapter() {
			
			@Override
			public boolean isViewFromObject(View arg0, Object arg1) {
				return arg0 == arg1;
			}
			
			@Override
			public int getCount() {
				return views.size();
			}

			@Override
			public void destroyItem(View container, int position, Object object) {
				((ViewPager)container).removeView(views.get(position));
			}
			
			//@Override
			//public CharSequence getPageTitle(int position) {
				//return titles.get(position);
			//}
			
			@Override
			public Object instantiateItem(View container, int position) {
				((ViewPager)container).addView(views.get(position));
				return views.get(position);
			}
		};
		
		mTabPager.setAdapter(mPagerAdapter);
    }
    /**
	 * 头标点击监听
	 */
	public class MyOnClickListener implements View.OnClickListener {
		private int index = 0;

		public MyOnClickListener(int i) {
			index = i;
		}
		@Override
		public void onClick(View v) {
			mTabPager.setCurrentItem(index);
		}
	};
    
	 /* 页卡切换监听(原作者:D.Winter)
	 */
	public class MyOnPageChangeListener implements OnPageChangeListener {
		@Override
		public void onPageSelected(int arg0) {
			Animation animation = null;
			switch (arg0) {
			case 0:
				mTab1.setImageDrawable(getResources().getDrawable(R.drawable.tab_weixin_pressed));
				if (currIndex == 1) {
					animation = new TranslateAnimation(one, 0, 0, 0);
					mTab2.setImageDrawable(getResources().getDrawable(R.drawable.tab_address_normal));
				} else if (currIndex == 2) {
					animation = new TranslateAnimation(two, 0, 0, 0);
					mTab3.setImageDrawable(getResources().getDrawable(R.drawable.tab_find_frd_normal));
				}
				else if (currIndex == 3) {
					animation = new TranslateAnimation(three, 0, 0, 0);
					mTab4.setImageDrawable(getResources().getDrawable(R.drawable.tab_settings_normal));
				}
				break;
			case 1:
				mTab2.setImageDrawable(getResources().getDrawable(R.drawable.tab_address_pressed));
				if (currIndex == 0) {
					animation = new TranslateAnimation(zero, one, 0, 0);
					mTab1.setImageDrawable(getResources().getDrawable(R.drawable.tab_weixin_normal));
				} else if (currIndex == 2) {
					animation = new TranslateAnimation(two, one, 0, 0);
					mTab3.setImageDrawable(getResources().getDrawable(R.drawable.tab_find_frd_normal));
				}
				else if (currIndex == 3) {
					animation = new TranslateAnimation(three, one, 0, 0);
					mTab4.setImageDrawable(getResources().getDrawable(R.drawable.tab_settings_normal));
				}
				break;
			case 2:
				mTab3.setImageDrawable(getResources().getDrawable(R.drawable.tab_find_frd_pressed));
				if (currIndex == 0) {
					animation = new TranslateAnimation(zero, two, 0, 0);
					mTab1.setImageDrawable(getResources().getDrawable(R.drawable.tab_weixin_normal));
				} else if (currIndex == 1) {
					animation = new TranslateAnimation(one, two, 0, 0);
					mTab2.setImageDrawable(getResources().getDrawable(R.drawable.tab_address_normal));
				}
				else if (currIndex == 3) {
					animation = new TranslateAnimation(three, two, 0, 0);
					mTab4.setImageDrawable(getResources().getDrawable(R.drawable.tab_settings_normal));
				}
				break;
			case 3:
				mTab4.setImageDrawable(getResources().getDrawable(R.drawable.tab_settings_pressed));
				if (currIndex == 0) {
					animation = new TranslateAnimation(zero, three, 0, 0);
					mTab1.setImageDrawable(getResources().getDrawable(R.drawable.tab_weixin_normal));
				} else if (currIndex == 1) {
					animation = new TranslateAnimation(one, three, 0, 0);
					mTab2.setImageDrawable(getResources().getDrawable(R.drawable.tab_address_normal));
				}
				else if (currIndex == 2) {
					animation = new TranslateAnimation(two, three, 0, 0);
					mTab3.setImageDrawable(getResources().getDrawable(R.drawable.tab_find_frd_normal));
				}
				break;
			}
			currIndex = arg0;
			animation.setFillAfter(true);// True:图片停在动画结束位置
			animation.setDuration(150);
			mTabImg.startAnimation(animation);
		}
		
		@Override
		public void onPageScrolled(int arg0, float arg1, int arg2) {
		}

		@Override
		public void onPageScrollStateChanged(int arg0) {
		}
	}
	
	@Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
    	if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {  //获取 back键
    		
        	if(menu_display){         //如果 Menu已经打开 ，先关闭Menu
        		menuWindow.dismiss();
        		menu_display = false;
        		}
        	else {
        		Intent intent = new Intent();
            	intent.setClass(MainWeixin.this,Exit.class);
            	startActivity(intent);
        	}
    	}
    	
    	else if(keyCode == KeyEvent.KEYCODE_MENU){   //获取 Menu键			
			if(!menu_display){
				//获取LayoutInflater实例
				inflater = (LayoutInflater)this.getSystemService(LAYOUT_INFLATER_SERVICE);
				//这里的main布局是在inflate中加入的哦，以前都是直接this.setContentView()的吧？呵呵
				//该方法返回的是一个View的对象，是布局中的根
				layout = inflater.inflate(R.layout.main_menu, null);
				
				//下面我们要考虑了，我怎样将我的layout加入到PopupWindow中呢？？？很简单
				menuWindow = new PopupWindow(layout,LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT); //后两个参数是width和height
				//menuWindow.showAsDropDown(layout); //设置弹出效果
				//menuWindow.showAsDropDown(null, 0, layout.getHeight());
				menuWindow.showAtLocation(this.findViewById(R.id.mainweixin), Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 0); //设置layout在PopupWindow中显示的位置
				//如何获取我们main中的控件呢？也很简单
				mClose = (LinearLayout)layout.findViewById(R.id.menu_close);
				mCloseBtn = (LinearLayout)layout.findViewById(R.id.menu_close_btn);
				
				
				//下面对每一个Layout进行单击事件的注册吧。。。
				//比如单击某个MenuItem的时候，他的背景色改变
				//事先准备好一些背景图片或者颜色
				mCloseBtn.setOnClickListener (new View.OnClickListener() {					
					@Override
					public void onClick(View arg0) {						
						//Toast.makeText(Main.this, "退出", Toast.LENGTH_LONG).show();
						Intent intent = new Intent();
			        	intent.setClass(MainWeixin.this,Exit.class);
			        	startActivity(intent);
			        	menuWindow.dismiss(); //响应点击事件之后关闭Menu
					}
				});				
				menu_display = true;				
			}else{
				//如果当前已经为显示状态，则隐藏起来
				menuWindow.dismiss();
				menu_display = false;
				}
			
			return false;
		}
    	return false;
    }
	//设置标题栏右侧按钮的作用
	public void btnmainright(View v) {  
		Intent intent = new Intent (MainWeixin.this,MainTopRightDialog.class);			
		startActivity(intent);	
		//Toast.makeText(getApplicationContext(), "点击了功能按钮", Toast.LENGTH_LONG).show();
      }  	
	public void startchat(View v) {      //小黑  对话界面
		Intent intent = new Intent (MainWeixin.this,ChatActivity.class);			
		startActivity(intent);	
		//Toast.makeText(getApplicationContext(), "登录成功", Toast.LENGTH_LONG).show();
      }  
	public void exit_settings(View v) {                           //退出  伪“对话框”，其实是一个activity
		Intent intent = new Intent (MainWeixin.this,ExitFromSettings.class);			
		startActivity(intent);	
	 }
	public void btn_shake(View v) {                                   //手机摇一摇
		Intent intent = new Intent (MainWeixin.this,ShakeActivity.class);			
		startActivity(intent);	
	}
}
    
    

对应布局文件：
main_weixin.xml
<pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/mainweixin"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:background="#eee" >  

    <RelativeLayout
        android:id="@+id/main_bottom"
        android:layout_width="match_parent"
        android:layout_height="55dp"
        android:layout_alignParentBottom="true"
        android:orientation="vertical"
        android:background="@drawable/bottom_bar"
        >             
      
        <ImageView
        	android:id="@+id/img_tab_now"
        	android:layout_width="wrap_content"
        	android:layout_height="wrap_content"        	     	
        	android:scaleType="matrix"
        	android:layout_gravity="bottom"            	
            android:layout_alignParentBottom="true"
        	android:src=http://www.mamicode.com/"@drawable/tab_bg" />              >

4、实现导航的滑动功能（继承TabActivity）
package com.example.yqqmobilesafe;

import android.app.TabActivity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TabHost;
/**
 * 骚扰拦截
 * @author yqq
 *
 */
public class StopAnonyActivity extends TabActivity {
	private TabHost mTabHost;
	private static final int SWIPE_MIN_DISTANCE = 120;  
    private static final int SWIPE_MAX_OFF_PATH = 250;  
    private static final int SWIPE_THRESHOLD_VELOCITY = 200;  
    private GestureDetector gestureDetector;  
    View.OnTouchListener gestureListener;  
    
    int currentView = 0;  
    private static int maxTabIndex = 2;
	public StopAnonyActivity() {
		
	}
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		
		super.onCreate(savedInstanceState);
		init();
		 gestureDetector = new GestureDetector(new MyGestureDetector());  
	        gestureListener = new View.OnTouchListener() {  
	            public boolean onTouch(View v, MotionEvent event) {  
	                if (gestureDetector.onTouchEvent(event)) {  
	                    return true;  
	                }  
	                return false;  
	            }  
	        };  
	}
	/**
	 * 初始化
	 */
	private void init() {
		setContentView(R.layout.activity_stop_annoy);
		mTabHost=getTabHost();
		Intent intent1=new Intent(StopAnonyActivity.this,RubishSmsActivity.class);
		mTabHost.addTab(mTabHost.newTabSpec("tab1").setIndicator("垃圾短信").setContent(intent1));

		Intent intent2=new Intent(StopAnonyActivity.this,AnnoyCallActivity.class);
		mTabHost.addTab(mTabHost.newTabSpec("tab2").setIndicator("骚扰电话").setContent(intent2));
		
		Intent intent3=new Intent(StopAnonyActivity.this,StopAnnoySettingActivity.class);
		mTabHost.addTab(mTabHost.newTabSpec("tab3").setIndicator("拦截设置").setContent(intent3));
		//从0开始
		//mTabHost.setCurrentTab(1);
	}
	
	
	
	 // 左右滑动刚好页面也有滑动效果  
    class MyGestureDetector extends SimpleOnGestureListener {  
        @Override  
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,  
                float velocityY) {  
            TabHost tabHost = getTabHost();  
            
            try {  
                if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)  
                    return false;  
                // right to left swipe  
                if (e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE  
                        && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {  
                    Log.i("test", "right");  
                    if (currentView == maxTabIndex) {  
                        currentView = 0;  
                    } else {  
                        currentView++;  
                    }  
                    tabHost.setCurrentTab(currentView);  
                } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE  
                        && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {  
                    Log.i("test", "left");  
                    if (currentView == 0) {  
                        currentView = maxTabIndex;  
                    } else {  
                        currentView--;  
                    }  
                    tabHost.setCurrentTab(currentView);  
                }  
            } catch (Exception e) {  
            }  
            return false;  
        }  
    }  
	
    public boolean dispatchTouchEvent(MotionEvent event) {  
        if (gestureDetector.onTouchEvent(event)) {  
            event.setAction(MotionEvent.ACTION_CANCEL);  
        }  
        return super.dispatchTouchEvent(event);  
    }  
  
	
	
}


对应布局文件：

activity_stop_annoy.xml
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@android:id/tabhost"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

        <TabWidget
            android:background="@drawable/light_green"
            android:id="@android:id/tabs"
            android:layout_width="match_parent"
            android:layout_height="50dp" >
        </TabWidget>

        <FrameLayout
         
            android:id="@android:id/tabcontent"
            android:layout_width="match_parent"
            android:layout_height="match_parent" >
        </FrameLayout>
    </RelativeLayout>

</TabHost>

效果图：

5、用 FragmentActivity实现导航
public class MainActivity extends FragmentActivity
{
	private ViewPager mViewPager;
	private FragmentPagerAdapter mAdapter;
	private List<Fragment> mFragments = new ArrayList<Fragment>();

	/**
	 * 顶部三个LinearLayout
	 */
	private LinearLayout mTabLiaotian;
	private LinearLayout mTabFaxian;
	private LinearLayout mTabTongxunlun;

	/**
	 * 顶部的三个TextView
	 */
	private TextView mLiaotian;
	private TextView mFaxian;
	private TextView mTongxunlu;

	/**
	 * 分别为每个TabIndicator创建一个BadgeView
	 */
	private BadgeView mBadgeViewforLiaotian;
	private BadgeView mBadgeViewforFaxian;
	private BadgeView mBadgeViewforTongxunlu;

	/**
	 * Tab的那个引导线
	 */
	private ImageView mTabLine;
	/**
	 * ViewPager的当前选中页
	 */
	private int currentIndex;
	/**
	 * 屏幕的宽度
	 */
	private int screenWidth;

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

		mViewPager = (ViewPager) findViewById(R.id.id_viewpager);

		initView();

		initTabLine();
		
		/**
		 * 初始化Adapter
		 */
		mAdapter = new FragmentPagerAdapter(getSupportFragmentManager())
		{
			@Override
			public int getCount()
			{
				return mFragments.size();
			}

			@Override
			public Fragment getItem(int arg0)
			{
				return mFragments.get(arg0);
			}
		};

		mViewPager.setAdapter(mAdapter);
		
		/**
		 * 设置监听
		 */
		mViewPager.setOnPageChangeListener(new OnPageChangeListener()
		{

			@Override
			public void onPageSelected(int position)
			{
				//重置所有TextView的字体颜色
				resetTextView();
				switch (position)
				{
				case 0:
				
					mTabLiaotian.removeView(mBadgeViewforLiaotian);
					mBadgeViewforLiaotian.setBadgeCount(5);
					mTabLiaotian.addView(mBadgeViewforLiaotian);
					mLiaotian.setTextColor(getResources().getColor(R.color.green));
					break;
				case 1:
					mFaxian.setTextColor(getResources().getColor(R.color.green));
					mTabFaxian.removeView(mBadgeViewforFaxian);
					mBadgeViewforFaxian.setBadgeCount(15);
					mTabFaxian.addView(mBadgeViewforFaxian);
					break;
				case 2:
					mTongxunlu.setTextColor(getResources().getColor(R.color.green));

					break;
				}

				currentIndex = position;
			}

			@Override
			public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels)
			{
				/**
				 * 利用position和currentIndex判断用户的操作是哪一页往哪一页滑动
				 * 然后改变根据positionOffset动态改变TabLine的leftMargin
				 */
				if (currentIndex == 0 && position == 0)// 0->1
				{
					LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) mTabLine
							.getLayoutParams();
					lp.leftMargin = (int) (positionOffset * (screenWidth * 1.0 / 3) + currentIndex * (screenWidth / 3));
					mTabLine.setLayoutParams(lp);
					
				} else if (currentIndex == 1 && position == 0) // 1->0
				{
					LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) mTabLine
							.getLayoutParams();
					lp.leftMargin = (int) (-(1 - positionOffset) * (screenWidth * 1.0 / 3) + currentIndex
							* (screenWidth / 3));
					mTabLine.setLayoutParams(lp);

				} else if (currentIndex == 1 && position == 1) // 1->2
				{
					LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) mTabLine
							.getLayoutParams();
					lp.leftMargin = (int) (positionOffset * (screenWidth * 1.0 / 3) + currentIndex * (screenWidth / 3));
					mTabLine.setLayoutParams(lp);
				} else if (currentIndex == 2 && position == 1) // 2->1
				{
					LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) mTabLine
							.getLayoutParams();
					lp.leftMargin = (int) (-(1 - positionOffset) * (screenWidth * 1.0 / 3) + currentIndex
							* (screenWidth / 3));
					mTabLine.setLayoutParams(lp);

				}

			}

			@Override
			public void onPageScrollStateChanged(int state)
			{
			}
		});

		mViewPager.setCurrentItem(1);

	}

	/**
	 * 根据屏幕的宽度，初始化引导线的宽度
	 */
	private void initTabLine()
	{
		mTabLine = (ImageView) findViewById(R.id.id_tab_line);
		DisplayMetrics outMetrics = new DisplayMetrics();
		getWindow().getWindowManager().getDefaultDisplay().getMetrics(outMetrics);
		screenWidth = outMetrics.widthPixels;
		LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams) mTabLine.getLayoutParams();
		lp.width = screenWidth / 3;
		mTabLine.setLayoutParams(lp);
	}

	/**
	 * 重置颜色
	 */
	protected void resetTextView()
	{
		mLiaotian.setTextColor(getResources().getColor(R.color.black));
		mFaxian.setTextColor(getResources().getColor(R.color.black));
		mTongxunlu.setTextColor(getResources().getColor(R.color.black));
	}

	/**
	 * 初始化控件，初始化Fragment
	 */
	private void initView()
	{

		mTabLiaotian = (LinearLayout) findViewById(R.id.id_tab_liaotian_ly);
		mTabFaxian = (LinearLayout) findViewById(R.id.id_tab_faxian_ly);
		mTabTongxunlun = (LinearLayout) findViewById(R.id.id_tab_tongxunlu_ly);

		mLiaotian = (TextView) findViewById(R.id.id_liaotian);
		mFaxian = (TextView) findViewById(R.id.id_faxian);
		mTongxunlu = (TextView) findViewById(R.id.id_tongxunlu);

		MainTab01 tab01 = new MainTab01();
		MainTab02 tab02 = new MainTab02();
		MainTab03 tab03 = new MainTab03();
		mFragments.add(tab01);
		mFragments.add(tab02);
		mFragments.add(tab03);

		mBadgeViewforFaxian = new BadgeView(this);
		mBadgeViewforLiaotian = new BadgeView(this);
		mBadgeViewforTongxunlu = new BadgeView(this);
	}
}


对应布局文件：



android 导航总结






























        

            
                
                  
                
                

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