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ViewPager+layout.xml

ViewPager+layout.xml

作者: 大灰狼zz | 来源:发表于2018-08-04 14:46 被阅读0次

    在xml中写好布局

    <android.support.v4.view.ViewPager
            android:id="@+id/viewpager"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    

    在activity中定义

    private ViewPager viewpager;
    viewpager = findView(R.id.viewpager);
    

    设置监听

    viewpager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
                @Override
                public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
    
                }
    
                @Override
                public void onPageSelected(int position) {
                    if (position == 2) {
                        tvGuideSkip.setVisibility(View.GONE);
                        btnGuideEnter.setVisibility(View.VISIBLE);
                    } else {
                        tvGuideSkip.setVisibility(View.VISIBLE);
                        btnGuideEnter.setVisibility(View.GONE);
                    }
                }
    
                @Override
                public void onPageScrollStateChanged(int state) {
    
                }
            });
    

    ViewPager与layout.xml

    新建Adapter 继承PagerAdapter

    public class ViewPagerAdapter extends PagerAdapter {
    
        private ArrayList<View> views;
    
        public ViewPagerAdapter(ArrayList<View> views) {
            super();
            this.views = views;
        }
    
        @Override
        public int getCount() {
            return views.size();
        }
    
        @Override
        public boolean isViewFromObject(@NonNull View view, @NonNull Object object) {
            return view == object;
        }
    
        @Override
        public Object instantiateItem(ViewGroup container, int position) {
            container.addView(views.get(position));
            return views.get(position);
        }
    
        @Override
        public void destroyItem(ViewGroup container, int position, Object object) {
            container.removeView(views.get(position));
        }
    }
    

    在activity中使用

    public class GuideActivity extends BaseActivity implements View.OnClickListener {
        private ArrayList<View> viewList;
        private ViewPager viewpager;
        private TextView tvGuideSkip;
        private Button btnGuideEnter;
    
        @Override
        public void setStatusBar() {
            super.setStatusBar();
            StatusBarUtil.setTransparent(this);
        }
    
        @Override
        public int getLayoutId() {
            return R.layout.start_activity_guide;
        }
    
        @Override
        public void initData() {
            viewList = new ArrayList<>();
            viewList.add(View.inflate(this, R.layout.start_guide_one, null));
            viewList.add(View.inflate(this, R.layout.start_guide_two, null));
            viewList.add(View.inflate(this, R.layout.start_guide_three, null));
        }
    
        @Override
        public void initView() {
            viewpager = findView(R.id.viewpager);
            tvGuideSkip = findView(R.id.tv_guide_skip);
            btnGuideEnter = findView(R.id.btn_guide_enter);
            viewpager.setAdapter(new ViewPagerAdapter(viewList));
        }
    
        @Override
        public void initListener() {
            tvGuideSkip.setOnClickListener(this);
            btnGuideEnter.setOnClickListener(this);
            viewpager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
                @Override
                public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
    
                }
    
                @Override
                public void onPageSelected(int position) {
                    if (position == 2) {
                        tvGuideSkip.setVisibility(View.GONE);
                        btnGuideEnter.setVisibility(View.VISIBLE);
                    } else {
                        tvGuideSkip.setVisibility(View.VISIBLE);
                        btnGuideEnter.setVisibility(View.GONE);
                    }
                }
    
                @Override
                public void onPageScrollStateChanged(int state) {
    
                }
            });
        }
    
        @Override
        public void viewsClick(View view) {
            int i = view.getId();
            if (i == R.id.tv_guide_skip) {
                CC.obtainBuilder("ComponentHome").setActionName("HomeActivity").build().call();
    
            } else if (i == R.id.btn_guide_enter) {
                CC.obtainBuilder("ComponentHome").setActionName("HomeActivity").build().call();
    
            }
        }
    
    }
    

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