Android使用ViewPager实现启动引导页效果的案例

这篇文章将为大家详细讲解有关Android使用ViewPager实现启动引导页效果的案例，小编觉得挺实用的，因此分享给大家做个参考，希望大家阅读完这篇文章后可以有所收获。

具体内容如下

ViewPagerTwoActivity.java

package cn.edu.zufe.app001;import androidx.annotation.NonNull;import androidx.appcompat.app.AppCompatActivity;import androidx.viewpager.widget.PagerAdapter;import androidx.viewpager.widget.ViewPager;import android.content.Context;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.ImageView;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.Toast;import java.util.ArrayList;public class ViewPagerTwoActivity extends AppCompatActivity {    private int[] launchImageArray = new int[]{            R.drawable.guide_bg1,R.drawable.guide_bg2,R.drawable.guide_bg3,R.drawable.guide_bg4    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_view_pager_two);        ViewPager vp_launch = (ViewPager)findViewById(R.id.vp_launch);        LaunchSimpleAdapter adapter = new LaunchSimpleAdapter(this,launchImageArray);        vp_launch.setAdapter(adapter);        vp_launch.setCurrentItem(0);    }    class LaunchSimpleAdapter extends PagerAdapter{        private Context mContext;        private ArrayList<View> mViewList = new ArrayList<View>();        public LaunchSimpleAdapter(final Context context, int[] imageArray){            mContext = context;            for(int i=0; i<imageArray.length; i++){                View view = LayoutInflater.from(context).inflate(R.layout.item_launch,null);                ImageView iv_launcher = (ImageView)view.findViewById(R.id.iv_launch);                RadioGroup rg_indicate = (RadioGroup)view.findViewById(R.id.rg_indicate);                Button btn_start = (Button)view.findViewById(R.id.btn_start);                iv_launcher.setImageResource(imageArray[i]);                for(int j=0; j<imageArray.length; j++){                    RadioButton radio = new RadioButton(mContext);                    radio.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));                    radio.setButtonDrawable(R.drawable.launch_guide);                    radio.setPadding(10,10,10,10);                    rg_indicate.addView(radio);                }                ((RadioButton)rg_indicate.getChildAt(i)).setChecked(true);                if (i == imageArray.length-1) {                    btn_start.setVisibility(View.VISIBLE);                    btn_start.setOnClickListener(new View.OnClickListener() {                        @Override                        public void onClick(View v) {                            Toast.makeText(context,"欢迎您开启美好生活",Toast.LENGTH_SHORT).show();                        }                    });                }                mViewList.add(view);            }        }        @Override        public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {            container.removeView(mViewList.get(position));        }        @NonNull        @Override        public Object instantiateItem(@NonNull ViewGroup container, int position) {            container.addView(mViewList.get(position));            return mViewList.get(position);        }        @Override        public int getCount() {            return mViewList.size();        }        @Override        public boolean isViewFromObject(@NonNull View view, @NonNull Object o) {            return view == o;        }    }}

activity_view_pager_two.xml

<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayout xmlns:android="Http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="cn.edu.zufe.app001.ViewPagerTwoActivity">    <androidx.viewpager.widget.ViewPager        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/vp_launch">    </androidx.viewpager.widget.ViewPager></androidx.constraintlayout.widget.ConstraintLayout>

关于“Android使用ViewPager实现启动引导页效果的案例”这篇文章就分享到这里了，希望以上内容可以对大家有一定的帮助，使各位可以学到更多知识，如果觉得文章不错，请把它分享出去让更多的人看到。