ActionBar切换ViewPager

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;
}

}

}