Android Studio使用ViewPager+Fragment实现滑动菜单Tab效果

本文为大家分享了Android Studio实现滑动菜单Tab效果的具体代码,供大家参考,具体内容如下

描述:

        之前有做过一个记账本APP,拿来练手的,做的很简单,是用Eclipse开发的;

        最近想把这个APP重新完善一下,添加了一些新的功能,并选用Android Studio来开发;

        APP已经完善了一部分,现在就想把已经做好的功能整理一下,记录下来。 

效果图:

        可以手动滑动菜单

        也可以通过点击头部菜单进行切换

具体实现的代码:

前台代码(activity_main.xml):

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:orientation="vertical">

<LinearLayout

android:layout_width="match_parent"

android:layout_height="40dp"

android:layout_marginTop="1dp"

android:background="@android:color/white"

android:baselineAligned="false"

android:gravity="center_vertical"

android:orientation="horizontal"

android:paddingBottom="5dp"

android:paddingTop="5dp">

<!--detail Tab-->

<TextView

android:id="@+id/item_detail"

android:layout_width="0dp"

android:layout_height="match_parent"

android:layout_weight="1"

android:gravity="center_horizontal|center_vertical"

android:text="@string/detail_tab"

android:textColor="@color/main_tab_text_color"

android:textSize="20dp"/>

<!--category report Tab-->

<TextView

android:id="@+id/item_category_report"

android:layout_width="0dp"

android:layout_height="match_parent"

android:layout_weight="1"

android:gravity="center_horizontal|center_vertical"

android:text="@string/category_report_tab"

android:textColor="@color/main_tab_text_color"

android:textSize="20dp"/>

</LinearLayout>

<android.support.v4.view.ViewPager

android:id="@+id/mainViewPager"

android:layout_width="match_parent"

android:layout_height="0dp"

android:layout_weight="1"/>

</LinearLayout>

主界面代码(MainActivity.java):

package com.hyl.acccountbookdemo;

import android.graphics.Color;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.support.v4.app.FragmentManager;

import android.support.v4.app.FragmentPagerAdapter;

import android.support.v4.view.ViewPager;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.TextView;

import java.util.ArrayList;

import java.util.List;

/**

* @programName: MainActivity.java

* @programFunction: Recording of income and expenditure

* @createDate: 2018/09/25

* @author: AnneHan

* @version:

* xx. yyyy/mm/dd ver author comments

* 01. 2018/09/25 1.00 AnneHan New Create

*/

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

private TextView item_detail, item_category_report;

private ViewPager vp;

private OneFragment oneFragment;

private TwoFragment twoFragment;

private List<Fragment> mFragmentList = new ArrayList<Fragment>();

private FragmentAdapter mFragmentAdapter;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

initViews();

mFragmentAdapter = new FragmentAdapter(this.getSupportFragmentManager(), mFragmentList);

vp.setOffscreenPageLimit(2);//ViewPager的缓存为2帧

vp.setAdapter(mFragmentAdapter);

vp.setCurrentItem(0);//初始设置ViewPager选中第一帧

item_detail.setTextColor(Color.parseColor("#1ba0e1"));

//ViewPager的监听事件

vp.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {

@Override

public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

}

@Override

public void onPageSelected(int position) {

/*此方法在页面被选中时调用*/

changeTextColor(position);

}

@Override

public void onPageScrollStateChanged(int state) {

/*此方法是在状态改变的时候调用,其中arg0这个参数有三种状态(0,1,2)。

arg0==1的时辰默示正在滑动,

arg0==2的时辰默示滑动完毕了,

arg0==0的时辰默示什么都没做。*/

}

});

}

/**

* 初始化布局View

*/

private void initViews() {

item_detail = (TextView) findViewById(R.id.item_detail);

item_category_report = (TextView) findViewById(R.id.item_category_report);

item_detail.setOnClickListener(this);

item_category_report.setOnClickListener(this);

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

oneFragment = new OneFragment();

twoFragment = new TwoFragment();

//给FragmentList添加数据

mFragmentList.add(oneFragment);

mFragmentList.add(twoFragment);

}

/**

* 点击头部Text 动态修改ViewPager的内容

*/

@Override

public void onClick(View v) {

switch (v.getId()) {

case R.id.item_detail:

vp.setCurrentItem(0, true);

break;

case R.id.item_category_report:

vp.setCurrentItem(1, true);

break;

}

}

public class FragmentAdapter extends FragmentPagerAdapter {

List<Fragment> fragmentList = new ArrayList<Fragment>();

public FragmentAdapter(FragmentManager fm, List<Fragment> fragmentList) {

super(fm);

this.fragmentList = fragmentList;

}

@Override

public Fragment getItem(int position) {

return fragmentList.get(position);

}

@Override

public int getCount() {

return fragmentList.size();

}

}

/**

* 由ViewPager的滑动修改头部导航Text的颜色

* @param position

*/

private void changeTextColor(int position) {

if (position == 0) {

item_detail.setTextColor(Color.parseColor("#1ba0e1"));

item_category_report.setTextColor(Color.parseColor("#000000"));

} else if (position == 1) {

item_category_report.setTextColor(Color.parseColor("#1ba0e1"));

item_detail.setTextColor(Color.parseColor("#000000"));

}

}

}

需要多少个Fragment,便创建多少个,这里只举例写一个,其它相同

建立Fragment(fragment_one.xml):

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="match_parent"

android:layout_height="match_parent">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:text="@string/detail_tab"

android:textSize="25sp"/>

</LinearLayout>

Fragment界面代码(OneFragment.java):

package com.hyl.acccountbookdemo;

import android.os.Bundle;

import android.support.v4.app.Fragment;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

/**

* @programName: OneFragment.java

* @programFunction:

* @createDate: 2018/09/25

* @author: AnneHan

* @version:

* xx. yyyy/mm/dd ver author comments

* 01. 2018/09/25 1.00 AnneHan New Create

*/

public class OneFragment extends Fragment {

@Override

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {

// Inflate the layout for this fragment

return inflater.inflate(R.layout.fragment_one, container, false);

}

}

strings.xml:

<string name="detail_tab">明细</string>

<string name="category_report_tab">类别报表</string>

colors.xml:

<color name="main_tab_text_color">#000000</color>

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。

以上是 Android Studio使用ViewPager+Fragment实现滑动菜单Tab效果 的全部内容, 来源链接: utcz.com/p/241217.html

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