直播视频app源码，android无缝滚动轮播图

直播视频app源码，android无缝滚动轮播图实现的相关代码

```cpp
package com.coral3.common_module.ui.fragment;

import android.app.Activity;
import android.os.Bundle;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.viewpager.widget.PagerAdapter;
import androidx.viewpager.widget.ViewPager;

import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;

import com.coral3.common_module.R;
import com.coral3.common_module.utils.LogUtil;

import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

import static com.coral3.common_module.R.layout.fragment_banner;

/**
* @description 制作无缝滚动轮播图
* @author WTY
* @date 2021/7/16/11/05/63
*/
public class BannerFragment extends Fragment {

private Activity mActivity;
private ViewPager viewPager;
private ImageView indicator;
private ImageView[] indicators;
private Boolean isContinue = true;
private ViewGroup group;
private AtomicInteger index = new AtomicInteger();
private Handler handler = new Handler(new Handler.Callback(){

@Override
public boolean handleMessage(Message message) {
viewPager.setCurrentItem(message.what);
return false;
}
});

public BannerFragment() {}

public static BannerFragment newInstance() {
BannerFragment fragment = new BannerFragment();
return fragment;
}

@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mActivity = getActivity();
initViews();
}

public void initViews(){
group = mActivity.findViewById(R.id.view_indicators);
viewPager = getActivity().findViewById(R.id.view_banners);
// 动态加入图片
List<View> listPics = new ArrayList<>();
ImageView img1 = new ImageView(mActivity);
img1.setBackgroundResource(R.drawable.banner1);
listPics.add(img1);
ImageView img2 = new ImageView(mActivity);
img2.setBackgroundResource(R.drawable.banner2);
listPics.add(img2);
ImageView img3 = new ImageView(mActivity);
img3.setBackgroundResource(R.drawable.banner3);
listPics.add(img3);
ImageView img4 = new ImageView(mActivity);
img4.setBackgroundResource(R.drawable.banner4);
listPics.add(img4);
ImageView img5 = new ImageView(mActivity);
img5.setBackgroundResource(R.drawable.banner4);
listPics.add(0, img5);
ImageView img0 = new ImageView(mActivity);
img0.setBackgroundResource(R.drawable.banner1);
listPics.add(img0);
//动态加入指示器
indicators = new ImageView[listPics.size()];
for(int i = 0; i < indicators.length; i++){
indicator = new ImageView(mActivity);
LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(15, 15);
layoutParams.setMargins(0, 0, 10, 0);
indicator.setLayoutParams(layoutParams);
indicators[i] = indicator;
if(i == 1){
indicators[i].setBackgroundResource(R.drawable.shape_banner_checked);
}else{
indicators[i].setBackgroundResource(R.drawable.shape_banner_unchecked);
}
if(i == 0 || i == 5){
indicators[i].setVisibility(View.INVISIBLE);
}
group.addView(indicators[i]);
}
viewPager.setAdapter(new MyPagerAdapter(listPics));
index.incrementAndGet();
// 设置监听器
viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {

@Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
if(positionOffset == 0.0){
if(position == 5) {
viewPager.setCurrentItem(1, false);
}
if(position == 0) {
viewPager.setCurrentItem(4, false);
}
}
}

@Override
public void onPageSelected(int position) {
LogUtil.d(position + "---");
index.getAndSet(position);
for(int i = 0; i < indicators.length; i++){
if(i == index.get()){
indicators[i].setBackgroundResource(R.drawable.shape_banner_checked);
}else{
indicators[i].setBackgroundResource(R.drawable.shape_banner_unchecked);
}
}
if(position == 0) indicators[4].setBackgroundResource(R.drawable.shape_banner_checked);
if(position == 5) indicators[1].setBackgroundResource(R.drawable.shape_banner_checked);
}

@Override
public void onPageScrollStateChanged(int state) {}
});

// 轮播
new Thread(new Runnable() {

@Override
public void run() {
while (true){
if(isContinue){
handler.sendEmptyMessage(index.get());
whatOption();
}
}
}
}).start();
// 设置触摸时停止定时
viewPager.setOnTouchListener(new View.OnTouchListener() {

@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
switch (motionEvent.getAction()){
case MotionEvent.ACTION_DOWN:
isContinue = false;
break;
case MotionEvent.ACTION_UP:
isContinue = true;
break;
}
return false;
}
});
}

private void whatOption(){
index.incrementAndGet();
if(index.get() > indicators.length - 2){
index.getAndAdd(-4);
}
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}

class MyPagerAdapter extends PagerAdapter {

private List<View> listView;

@Override
public int getCount() {
return listView.size();
}

public MyPagerAdapter(List<View> listView){
this.listView = listView;
}

@Override
public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
return view == object;
}

@NonNull
@Override
public Object instantiateItem(@NonNull ViewGroup container, int position) {
container.addView(listView.get(position));
return listView.get(position);
}

@Override
public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
container.removeView(listView.get(position));
}
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_banner, container, false);
}
}
```

 

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