ActionBar切换ViewPager_actionbar viewpager-优快云博客

本文链接：https://blog.youkuaiyun.com/wuletaotao/article/details/51415951

ViewPager

自带滑动效果

1）ViewPager类直接继承了ViewGroup类，所有它是一个容器类，可以在其中添加其他的view类。

2）ViewPager类需要一个PagerAdapter适配器类给它提供数据。

3）ViewPager经常和Fragment一起使用，并且提供了专门的FragmentPagerAdapter和FragmentStatePagerAdapter类供Fragment中的ViewPager使用。

1.action_main.xml

<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawerlayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >
<strong>
    <android.support.v4.view.ViewPager
        android:id="@+id/vp"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true" >

       
    </android.support.v4.view.ViewPager></strong>

    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="left"
        android:background="@drawable/bg_tab" />

</android.support.v4.widget.DrawerLayout>

2.Fragment

package com.itheima.googleplay.fragment;

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

public class HomeFragment extends Fragment {
	
	@Override
	public View onCreateView(LayoutInflater inflater, ViewGroup container,
			Bundle savedInstanceState) {
		TextView tView = new TextView(getActivity());
		tView.setText("我是home");
		return tView;
	}
}

3.互相监听

ActionBar 监听 viewpager

viewpager监听Actionbar

1.初始化viewpager

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

2.给viewpager设置Adpater

mViewPager.setAdapter(new MyAdpater(getSupportFragmentManager()));//这里要注意版本问题不然容易报错

	/**
	 * viewpager adpater
	 */
	class MyAdpater extends FragmentStatePagerAdapter {

		public MyAdpater(FragmentManager fm) {
			super(fm);
		}

		// 每个条目返回的fragment
		@Override
		public Fragment getItem(int arg0) {
			switch (arg0) {
			case 0:
				return new HomeFragment();

			default:
				return new AppFragment();
			}
		}

		// 一共几个条目
		@Override
		public int getCount() {
			return 4;
		}

	}

4.viewpager设置监听

		mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {

			@Override
			public void onPageSelected(int position) {
				getActionBar().setSelectedNavigationItem(position);
			}
		});

5.actionbar监听

           
          伪代码
            bar.addTab(bar.newTab().setText("标签1")
                .setTabListener(new MyTabListenter()));

           private class MyTabListenter implements TabListener {

		@Override
		public void onTabSelected(Tab tab, FragmentTransaction ft) {
			mViewPager.setCurrentItem(tab.getPosition()); // 监听tab选择哪个按钮位置
								      // 然后来控制viewpager
		}

		@Override
		public void onTabUnselected(Tab tab, FragmentTransaction ft) {

		}

		@Override
		public void onTabReselected(Tab tab, FragmentTransaction ft) {

		}

	}

//整体代码

package com.itheima.googleplay;

import com.itheima.googleplay.fragment.AppFragment;
import com.itheima.googleplay.fragment.HomeFragment;

import android.os.Bundle;
import android.app.ActionBar;
import android.app.ActionBar.TabListener;
import android.app.FragmentTransaction;
import android.app.ActionBar.Tab;
import android.app.Activity;
import android.content.Intent;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.support.v4.widget.DrawerLayout;
import android.support.v4.widget.DrawerLayout.DrawerListener;
import android.support.v7.widget.SearchView;
import android.support.v7.widget.SearchView.OnQueryTextListener;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;

public class MainActivity extends FragmentActivity {

	private DrawerLayout drawerLayout;
	ActionBarDrawerToggle actionBarDrawerToggle;
	private ViewPager mViewPager;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		drawerLayout = (DrawerLayout) findViewById(R.id.drawerlayout);
		mViewPager = (ViewPager) findViewById(R.id.vp);

		// ====================
		mViewPager.setAdapter(new MyAdpater(getSupportFragmentManager()));

		// =====================
		ActionBar bar = getActionBar();
		// bar.setHomeButtonEnabled(true);
		bar.setDisplayHomeAsUpEnabled(true);// 设置home显示“三横”图标

		// 添加tab
		bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
		// 添加标签
		bar.addTab(bar.newTab().setText("标签1")
				.setTabListener(new MyTabListenter()));
		bar.addTab(bar.newTab().setText("标签2")
				.setTabListener(new MyTabListenter()));
		bar.addTab(bar.newTab().setText("标签3")
				.setTabListener(new MyTabListenter()));
		bar.addTab(bar.newTab().setText("标签4")
				.setTabListener(new MyTabListenter()));

		// =================================================================
		// 参数1：当前的actionbar 参数2：哪个侧滑需要控制 参数3：按钮图标来控制侧滑
		// 参数4，5：打开关闭抽屉描述
		actionBarDrawerToggle = new ActionBarDrawerToggle(this, drawerLayout,
				R.drawable.ic_drawer_am, R.string.drawer_open,
				R.string.drawer_close);
		// //设置drawer的开关监听
		drawerLayout.setDrawerListener(new DrawerListener() {

			@Override
			public void onDrawerStateChanged(int arg0) {

			}

			@Override
			public void onDrawerSlide(View arg0, float arg1) {

			}

			@Override
			public void onDrawerOpened(View arg0) {

			}

			@Override
			public void onDrawerClosed(View arg0) {

			}
		});

		// 将actionbar与DrawerLayout同步关联
		actionBarDrawerToggle.syncState();

		// ===================viewpager监听============================
		mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {

			@Override
			public void onPageSelected(int position) {
				getActionBar().setSelectedNavigationItem(position);
			}
		});

		// ===============================================

	}

	private class MyTabListenter implements TabListener {

		@Override
		public void onTabSelected(Tab tab, FragmentTransaction ft) {
			mViewPager.setCurrentItem(tab.getPosition()); // 监听tab选择哪个按钮位置
															// 然后来控制viewpager
		}

		@Override
		public void onTabUnselected(Tab tab, FragmentTransaction ft) {

		}

		@Override
		public void onTabReselected(Tab tab, FragmentTransaction ft) {

		}

	}

	/**
	 * 初始化menu
	 */
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.main, menu);

		// 获取searchview
		SearchView search = (SearchView) menu.findItem(R.id.action_search)
				.getActionView();
		// 设置监听
		search.setOnQueryTextListener(new OnQueryTextListener() {

			// 搜索文本提交的时候
			@Override
			public boolean onQueryTextSubmit(String searchText) {
				// 输入内容的searchText
				Toast.makeText(getApplicationContext(), searchText, 0).show();
				return true;
			}

			// 搜索文本发生变化的时候
			@Override
			public boolean onQueryTextChange(String searchText) {
				Toast.makeText(getApplicationContext(), searchText, 0).show();
				return false;
			}
		});

		return true;
	}

	// 处理搜索点击事件
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		if (item.getItemId() == R.id.action_search) {
			Toast.makeText(this, "搜索", 0).show();
		}

		return actionBarDrawerToggle.onOptionsItemSelected(item)
				|| super.onOptionsItemSelected(item);
	}

	// 跳转 MainActivity - DetailActivity
	public void click(View view) {
		startActivity(new Intent(getApplicationContext(), DetailActivity.class));
	}

	/**
	 * viewpager adpater
	 */
	class MyAdpater extends FragmentStatePagerAdapter {

		public MyAdpater(FragmentManager fm) {
			super(fm);
		}

		// 每个条目返回的fragment
		@Override
		public Fragment getItem(int arg0) {
			switch (arg0) {
			case 0:
				return new HomeFragment();

			default:
				return new AppFragment();
			}
		}

		// 一共几个条目
		@Override
		public int getCount() {
			return 4;
		}

	}

}