Android ViewPager与radiogroup实现关联
Android ViewPager与radiogroup实现关联
效果图展示
Android ViewPager与radiogroup实现关联步骤
1.实例化ViewPager
2.通过LayoutInflater加载布局，返回View结果
3.把生成的每一个View对象添加到List集合中
4.实例化适配器，传递View集合
5.在适配器中继承自PagerAdapter，实现内部的四个方法
getCount(); 返回视图的数量
isViewFromObject(); 是否通过对象加载视图 View==object
instantiateltem(); 加载当前页面
(通过container.addView();添加视图)
返回个给用户
destroyItem(); 销毁滑出的视图
(通过container.removerView();销毁视图)
6.实例化每个RadioButton
7.点击每个RaidoButton时，切换不同的页面
(viewPager.setCurrentltem(下标))
8.当页面切换后，还要把当前的导航栏变为绿色
设置文本颜色的
setTextColor(getResources().getColor(R.color.tvGreen));
设置文本的上方的图片的，四个参数分别为，左、上、右、下
setCompoundDrawablesWithIntrinsicBounds
(null,getResources().getDrawable）
(R.drawable.call_t),null,null);
9.当你每次点击之前的时候，添加一个方法，清除方法，
（清理之 前的所有导航栏的状态，置为灰色）
10.实现滑动监听需要addOnPagerChangeListener
11.在onPagerSelected方法中，根据position页面的下标判断分别设置对应的底部导航栏状态
2.通过LayoutInflater加载布局，返回View结果
3.把生成的每一个View对象添加到List集合中
4.实例化适配器，传递View集合
5.在适配器中继承自PagerAdapter，实现内部的四个方法
getCount(); 返回视图的数量
isViewFromObject(); 是否通过对象加载视图 View==object
instantiateltem(); 加载当前页面
(通过container.addView();添加视图)
返回个给用户
destroyItem(); 销毁滑出的视图
(通过container.removerView();销毁视图)
6.实例化每个RadioButton
7.点击每个RaidoButton时，切换不同的页面
(viewPager.setCurrentltem(下标))
8.当页面切换后，还要把当前的导航栏变为绿色
设置文本颜色的
setTextColor(getResources().getColor(R.color.tvGreen));
设置文本的上方的图片的，四个参数分别为，左、上、右、下
setCompoundDrawablesWithIntrinsicBounds
(null,getResources().getDrawable）
(R.drawable.call_t),null,null);
9.当你每次点击之前的时候，添加一个方法，清除方法，
（清理之 前的所有导航栏的状态，置为灰色）
10.实现滑动监听需要addOnPagerChangeListener
11.在onPagerSelected方法中，根据position页面的下标判断分别设置对应的底部导航栏状态
代码演示
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用于显示导航栏
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="通讯录" 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="发现" 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需要适配器继承于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:
陈箫阳
(admin)
*/
public class
MyViewPagerAdpter
extends
PagerAdapter {
private
List
mList
;
public
MyViewPagerAdpter(List list) {
mList
= list;
}
//
返回视图数量
@Override
public int
getCount() {
return
mList
.size();
}
//
是否通过对象加载视图
@Override
public boolean
isViewFromObject(View view, Object object) {
return
view == object;
}
//
加载当前页面
@Override
public
Object instantiateItem(ViewGroup container,
int
position) {
container.addView(
mList
.get(position));
return
mList
.get(position);
//View
}
//
销毁滑出视图
@Override
public void
destroyItem(ViewGroup container,
int
position, Object object) {
container.removeView(
mList
.get(position));
}
}
3.新建一个fragment包，在包中新建OneFragment类用于滑动展示，新建布局文件fragmentone.xml并添加TextView用于添加不同页面的内容，共有四个这里只写一个
OneFragment类
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:陈箫阳(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="这是微信页面"/>
LinearLayout> 4.编写主类
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 ListmList; 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() { //实例化ViewPager mViewPager = (ViewPager) findViewById(R.id.viewPager); //实例化Radiogroup mRadioGroup = (RadioGroup) findViewById(R.id.radioGroup); //给RadioGroup添加监听 mRadioGroup.setOnCheckedChangeListener(this); //实例化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); //实例化List数组 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); //把生成的每一个View对象添加到集合中 mList.add(view1); mList.add(view2); mList.add(view3); mList.add(view4); //实例化适配器 MyViewPagerAdpter adapter = new MyViewPagerAdpter(mList); //给ViewPager添加适配器 mViewPager.setAdapter(adapter); //给ViewPager添加监听事件 mViewPager.addOnPageChangeListener(this); } @Override public void onCheckedChanged(RadioGroup group, int checkedId) { //清理所有导航栏的状态 clearState(); switch (checkedId) { case R.id.radioButton1: //给ViewPager设置当前布局 mViewPager.setCurrentItem(0); //给RadioButton设置文本颜色 weChatBtn.setTextColor(getResources().getColor(R.color.tvGreen)); //给RadioButton设置文本上方的图片 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; } } //初始化底部导航栏 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); } //滑动过程中的动作 @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } //选择某个页面松手后会被调用 @Override public void onPageSelected(int position) { //清理所有导航栏的状态 clearState(); switch (position) { //使用Switch拿到下标定义当滑动到相应位置小点显示颜色 case 0: //当页面切换后，还要把当前的导航栏变为绿色 weChatBtn.setTextColor(getResources().getColor(R.color.tvGreen)); //设置文本的上方的图片的，四个参数分别为，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，松开，拖动都会被调用 @Override public void onPageScrollStateChanged(int state) { } }