ViewPager中間嵌套ViewPager時(shí)示损，默認(rèn)事件會(huì)被內(nèi)部ViewPager攔截崭倘，當(dāng)滑動(dòng)到最左邊或者最右邊時(shí)聊替，會(huì)被外部ViewPager接收祥楣，如下圖所示：

默認(rèn)截圖

現(xiàn)項(xiàng)目有一需求开财，要求內(nèi)部ViewPager使用手動(dòng)切換，左右滑動(dòng)事件由外部ViewPager接收误褪，待實(shí)現(xiàn)效果如下圖所示：

內(nèi)部ViewPager禁止滑動(dòng)的截圖

解決方案

自定義內(nèi)部ViewPager责鳍，攔截內(nèi)部滑動(dòng)事件，重寫canScrollHorizontally即可兽间，直接返回false历葛。

public class NoScrollViewPager extends ViewPager {
    public NoScrollViewPager(@NonNull Context context) {
        super(context);
    }

    public NoScrollViewPager(@NonNull Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean canScrollHorizontally(int direction) {
        return false;
    }
}

引用代碼，布局全部使用java實(shí)現(xiàn)

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        final ViewPager contentView=new ViewPager(this);
        setContentView(contentView);
        final List<View> views = new ArrayList<>();
        TextView view = new TextView(this);
        ViewGroup.LayoutParams params=new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT);
        view.setLayoutParams(params);
        //數(shù)據(jù)填充
        view.setText("我是第一個(gè)TextView");
        view.setGravity(Gravity.CENTER);
        views.add(view);
        final ViewPager viewPager=new NoScrollViewPager(this);
        viewPager.setAdapter(new PagerAdapter() {
            @Override
            public int getCount() {
                return 2;
            }

            @Override
            public boolean isViewFromObject(@NonNull View view, @NonNull Object o) {
                return view == o;
            }
            @NonNull
            @Override
            public Object instantiateItem(@NonNull ViewGroup container, final int position) {
                TextView view = new TextView(MainActivity.this);
                ViewGroup.LayoutParams params=new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,ViewGroup.LayoutParams.MATCH_PARENT);
                view.setLayoutParams(params);
                //數(shù)據(jù)填充
                view.setText("我是第二個(gè)ViewPager——position："+position);
                view.setGravity(Gravity.CENTER);
                view.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        viewPager.setCurrentItem(position==0?1:0);
                    }
                });
                container.addView(view);
                return view;
            }

            @Override
            public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
                container.removeView((View) object);
            }
        });
        views.add(viewPager);
        PagerAdapter adapter = new PagerAdapter() {
            @Override
            public int getCount() {
                return views.size();
            }

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

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

            @Override
            public void destroyItem(@NonNull ViewGroup container, int position, @NonNull Object object) {
                container.removeView((View) object);
            }
        };
        contentView.setAdapter(adapter);
    }
}