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Android ViewPager與radiogroup實(shí)現(xiàn)關(guān)聯(lián)示例

 更新時(shí)間：2017年03月08日 08:31:25   作者：AlmostDawn  
本篇文章主要介紹了Android ViewPager與radiogroup實(shí)現(xiàn)關(guān)聯(lián)示例，具有一定的參考價(jià)值，有興趣的可以了解一下。

Android ViewPager與radiogroup實(shí)現(xiàn)關(guān)聯(lián)

效果圖展示

Android ViewPager與radiogroup實(shí)現(xiàn)關(guān)聯(lián)步驟

1.實(shí)例化ViewPager

2.通過LayoutInflater加載布局，返回View結(jié)果

3.把生成的每一個(gè)View對(duì)象添加到List集合中

4.實(shí)例化適配器，傳遞View集合

5.在適配器中繼承自PagerAdapter，實(shí)現(xiàn)內(nèi)部的四個(gè)方法

  • getCount(); 返回視圖的數(shù)量
  • isViewFromObject(); 是否通過對(duì)象加載視圖 View==object
  • instantiateltem(); 加載當(dāng)前頁面(通過container.addView();添加視圖)返回個(gè)給用戶
  • destroyItem(); 銷毀滑出的視圖(通過container.removerView();銷毀視圖)

6.實(shí)例化每個(gè)RadioButton

7.點(diǎn)擊每個(gè)RaidoButton時(shí)，切換不同的頁面(viewPager.setCurrentltem(下標(biāo)))

8.當(dāng)頁面切換后，還要把當(dāng)前的導(dǎo)航欄變?yōu)榫G色

  • 設(shè)置文本顏色的setTextColor(getResources().getColor(R.color.tvGreen));
  • 設(shè)置文本的上方的圖片的，四個(gè)參數(shù)分別為，左、上、右、下setCompoundDrawablesWithIntrinsicBounds (null,getResources().getDrawable）(R.drawable.call_t),null,null);

9.當(dāng)你每次點(diǎn)擊之前的時(shí)候，添加一個(gè)方法，清除方法，（清理之 前的所有導(dǎo)航欄的狀態(tài)，置為灰色）

10.實(shí)現(xiàn)滑動(dòng)監(jiān)聽需要addOnPagerChangeListener

11.在onPagerSelected方法中，根據(jù)position頁面的下標(biāo)判斷分別設(shè)置對(duì)應(yīng)的底部導(dǎo)航欄狀態(tài)

代碼演示

1.在主布局文件中引入android-support-v4.jar包并添加RadioGroup并在RadioGroup中添加RadioButton用于顯示導(dǎo)航欄

 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical"
  tools:context="com.example.cxy.viewpager.MainActivity">

  <android.support.v4.view.ViewPager
    android:id="@+id/viewPager"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="9">
  </android.support.v4.view.ViewPager>

  <RadioGroup
    android:id="@+id/radioGroup"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1"
    android:background="#F4F3F3"
    android:orientation="horizontal">

    <RadioButton
      android:id="@+id/radioButton1"
      android:layout_width="0dp"
      android:layout_height="match_parent"
      android:layout_weight="1"
      android:button="@null"
      android:drawableTop="@drawable/mess_t"
      android:gravity="center"
      android:text="微信"
      android:textColor="#11CD6E"/>

    <RadioButton
      android:id="@+id/radioButton2"
      android:layout_width="0dp"
      android:layout_height="match_parent"
      android:layout_weight="1"
      android:button="@null"
      android:drawableTop="@drawable/call_f"
      android:gravity="center"
      android:text="通訊錄"
      android:textColor="@android:color/darker_gray"/>

    <RadioButton
      android:id="@+id/radioButton3"
      android:layout_width="0dp"
      android:layout_height="match_parent"
      android:layout_weight="1"
      android:button="@null"
      android:drawableTop="@drawable/show_f"
      android:gravity="center"
      android:text="發(fā)現(xiàn)"
      android:textColor="@android:color/darker_gray"/>

    <RadioButton
      android:id="@+id/radioButton4"
      android:layout_width="0dp"
      android:layout_height="match_parent"
      android:layout_weight="1"
      android:button="@null"
      android:drawableTop="@drawable/my"
      android:gravity="center"
      android:text="我"
      android:textColor="@android:color/darker_gray"/>
  </RadioGroup>
</LinearLayout>

2.ViewPager需要適配器繼承于PagerAdapter

 package com.example.cxy.viewpager.adapter;

import android.support.v4.view.PagerAdapter;
import android.view.View;
import android.view.ViewGroup;

import java.util.List;

/**
 * date:2017/3/7
 * Created:陳簫陽(admin)
 */
public class MyViewPagerAdpter extends PagerAdapter {
  private List<View> mList;

  public MyViewPagerAdpter(List<View> list) {
    mList = list;
  }


  //返回視圖數(shù)量
  @Override
  public int getCount() {
    return mList.size();
  }

  //是否通過對(duì)象加載視圖
  @Override
  public boolean isViewFromObject(View view, Object object) {
    return view == object;
  }

  //加載當(dāng)前頁面
  @Override
  public Object instantiateItem(ViewGroup container, int position) {
    container.addView(mList.get(position));
    return mList.get(position);//View
  }

  //銷毀滑出視圖
  @Override
  public void destroyItem(ViewGroup container, int position, Object object) {
    container.removeView(mList.get(position));
  }
}

3.新建一個(gè)fragment包，在包中新建OneFragment類用于滑動(dòng)展示，新建布局文件fragmentone.xml并添加TextView用于添加不同頁面的內(nèi)容，共有四個(gè)這里只寫一個(gè)

OneFragment類

package com.example.cxy.viewpager.fragment;

import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.example.cxy.viewpager.R;

/**
 * date:2017/3/7
 * Created:陳簫陽(admin)
 */
public class OneFragment extends Fragment{
  @Nullable
  @Override
  public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragmentone, null);
    return view;
  }
}

fragmentone.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">

  <TextView
    android:textSize="30sp"
    android:id="@+id/textView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:text="這是微信頁面"/>

</LinearLayout>

4.編寫主類

package com.example.cxy.viewpager;

import android.os.Bundle;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.RadioButton;
import android.widget.RadioGroup;

import com.example.cxy.viewpager.adapter.MyViewPagerAdpter;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements RadioGroup.OnCheckedChangeListener, ViewPager.OnPageChangeListener {
  private ViewPager mViewPager;
  private List<View> mList;
  private RadioGroup mRadioGroup;
  private RadioButton weChatBtn, msgBtn, showBtn, myBtn;


  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    //初始化所有控件
    initView();
  }

  private void initView() {
    //實(shí)例化ViewPager
    mViewPager = (ViewPager) findViewById(R.id.viewPager);
    //實(shí)例化Radiogroup
    mRadioGroup = (RadioGroup) findViewById(R.id.radioGroup);
    //給RadioGroup添加監(jiān)聽
    mRadioGroup.setOnCheckedChangeListener(this);
    //實(shí)例化RadioButton
    weChatBtn = (RadioButton) findViewById(R.id.radioButton1);
    msgBtn = (RadioButton) findViewById(R.id.radioButton2);
    showBtn = (RadioButton) findViewById(R.id.radioButton3);
    myBtn = (RadioButton) findViewById(R.id.radioButton4);
    //實(shí)例化List數(shù)組
    mList = new ArrayList<>();
    View view1 = LayoutInflater.from(this).inflate(R.layout.fragmentone, null);
    View view2 = LayoutInflater.from(this).inflate(R.layout.fragmenttwo, null);
    View view3 = LayoutInflater.from(this).inflate(R.layout.fragmentthree, null);
    View view4 = LayoutInflater.from(this).inflate(R.layout.fragmentfour, null);
    //把生成的每一個(gè)View對(duì)象添加到集合中
    mList.add(view1);
    mList.add(view2);
    mList.add(view3);
    mList.add(view4);
    //實(shí)例化適配器
    MyViewPagerAdpter adapter = new MyViewPagerAdpter(mList);
    //給ViewPager添加適配器
    mViewPager.setAdapter(adapter);
    //給ViewPager添加監(jiān)聽事件
    mViewPager.addOnPageChangeListener(this);
  }

  @Override
  public void onCheckedChanged(RadioGroup group, int checkedId) {
    //清理所有導(dǎo)航欄的狀態(tài)
    clearState();
    switch (checkedId) {
      case R.id.radioButton1:
        //給ViewPager設(shè)置當(dāng)前布局
        mViewPager.setCurrentItem(0);
        //給RadioButton設(shè)置文本顏色
        weChatBtn.setTextColor(getResources().getColor(R.color.tvGreen));
        //給RadioButton設(shè)置文本上方的圖片
        weChatBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.mess_t), null, null);
        break;
      case R.id.radioButton2:
        mViewPager.setCurrentItem(1);
        msgBtn.setTextColor(getResources().getColor(R.color.tvGreen));
        msgBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.call_t), null, null);
        break;
      case R.id.radioButton3:
        mViewPager.setCurrentItem(2);
        showBtn.setTextColor(getResources().getColor(R.color.tvGreen));
        showBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.show_t), null, null);
        break;
      case R.id.radioButton4:
        mViewPager.setCurrentItem(3);
        myBtn.setTextColor(getResources().getColor(R.color.tvGreen));
        myBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.my_t), null, null);
        break;
    }
  }

  //初始化底部導(dǎo)航欄
  private void clearState() {
    weChatBtn.setTextColor(getResources().getColor(android.R.color.darker_gray));
    msgBtn.setTextColor(getResources().getColor(android.R.color.darker_gray));
    showBtn.setTextColor(getResources().getColor(android.R.color.darker_gray));
    myBtn.setTextColor(getResources().getColor(android.R.color.darker_gray));
    weChatBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.mess_f), null, null);
    msgBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.call_f), null, null);
    showBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.show_f), null, null);
    myBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.my), null, null);
  }

  //滑動(dòng)過程中的動(dòng)作
  @Override
  public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

  }

  //選擇某個(gè)頁面松手后會(huì)被調(diào)用
  @Override
  public void onPageSelected(int position) {
    //清理所有導(dǎo)航欄的狀態(tài)
    clearState();
    switch (position) {
      //使用Switch拿到下標(biāo)定義當(dāng)滑動(dòng)到相應(yīng)位置小點(diǎn)顯示顏色
      case 0:
        //當(dāng)頁面切換后，還要把當(dāng)前的導(dǎo)航欄變?yōu)榫G色
        weChatBtn.setTextColor(getResources().getColor(R.color.tvGreen));
        //設(shè)置文本的上方的圖片的，四個(gè)參數(shù)分別為，左、上、右、下
        weChatBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.mess_t), null, null);
        break;
      case 1:
        msgBtn.setTextColor(getResources().getColor(R.color.tvGreen));
        msgBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.call_t), null, null);
        break;
      case 2:
        showBtn.setTextColor(getResources().getColor(R.color.tvGreen));
        showBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.show_t), null, null);
        break;
      case 3:
        myBtn.setTextColor(getResources().getColor(R.color.tvGreen));
        myBtn.setCompoundDrawablesWithIntrinsicBounds(null, getResources().getDrawable(R.drawable.my_t), null, null);
        break;
    }

  }

  //手指放上去，松開，拖動(dòng)都會(huì)被調(diào)用
  @Override
  public void onPageScrollStateChanged(int state) {

  }
}

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