学习笔记—Fragement +Actionbar

时间：2021-05-01 07:44:16

这里实现的是tabhost类型的菜单选项，还有下拉菜单选项的 http://www.cnblogs.com/hanyuan/archive/2012/04/11/android_actionbar_addingdrop-downnavigation.html

主要过程就是getactionbar 的到actionbar

设置actionbar加载模式

创建tab

创建fragement

给tab加监听tablistener

给actionbar加tab

package com.example.fragement;

import android.os.Bundle;

import android.annotation.SuppressLint;

import android.app.ActionBar;

import android.app.Activity;

import android.app.ActionBar.Tab;

import android.app.ActionBar.TabListener;

import android.app.Fragment;

import android.app.FragmentTransaction;

import android.graphics.drawable.Drawable;

import android.view.Menu;

import android.view.View;

public class MainActivity extends Activity {

    FragementA a;

    @SuppressLint("NewApi")

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        //得到actionbar

        ActionBar actionbar=getActionBar();

        //设置actionbar的操作模式

        //tab模式

        actionbar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        //创建tab

        Tab xufeng=actionbar.newTab().setText("徐风");

        Tab chenkai=actionbar.newTab().setText("陈凯");

        // 将Activity的头部去掉

        actionbar.setDisplayShowTitleEnabled(false);

        //实例化Fragement

        a=new FragementA();

        FragementB b=new FragementB();

        //添加监听

        xufeng.setTabListener(new tablistener(a));

        chenkai.setTabListener(new tablistener(b));

        //添加TAB

        actionbar.addTab(xufeng);

        actionbar.addTab(chenkai);

    }

    @SuppressLint("NewApi")

    class tablistener implements TabListener{

        Fragment fg;

        public tablistener(Fragment  a) {

            // TODO Auto-generated constructor stub

            this.fg=a;

        }

        @Override

        public void onTabReselected(Tab arg0, FragmentTransaction arg1) {

            // TODO Auto-generated method stub

        }

        @Override

        public void onTabSelected(Tab arg0, FragmentTransaction arg1) {

            // TODO Auto-generated method stub

            //tab 选中时 用对应的Fragement

            arg1.replace(R.id.content, fg);

        }

        @Override

        public void onTabUnselected(Tab arg0, FragmentTransaction arg1) {

            // TODO Auto-generated method stub

            arg1.remove(fg);

        }

    }

}
package com.example.fragement;

import android.annotation.SuppressLint;

import android.app.Fragment;

import android.os.Bundle;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.TextView;

@SuppressLint("NewApi")

public class FragementA extends Fragment {

    @Override

    public void onCreate(Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        super.onCreate(savedInstanceState);

    }

    @Override

    public View onCreateView(LayoutInflater inflater, ViewGroup container,

            Bundle savedInstanceState) {

        // TODO Auto-generated method stub

        View view=inflater.inflate(R.layout.activity_main, null);

        ((TextView)(view.findViewById(R.id.text))).setText("徐风");

        return view;

    }

}

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