Android笔记(5)convenientbanner轮播图

xiaoxiao2021-02-28  166

1.在build.gradle(Module app)中添加包,并import module

dependencies { implementation project(':convenientbanner') implementation files('libs/universal-image-loader-1.9.4.jar') implementation 'com.ToxicBakery.viewpager.transforms:view-pager-transforms:1.2.32@aar' }

2.在setting.gradle中添加

include ':convenientbanner'

3.新建java类NetworkImageHolderView

import android.content.Context; import android.view.View; import android.widget.ImageView; import com.bigkoo.convenientbanner.holder.Holder; import com.nostra13.universalimageloader.core.ImageLoader; import xiaoye.com.supersavingstyrant.R; /** * Created by 小烨 on 2017/7/10. */ public class NetworkImageHolderView implements Holder<String> { private ImageView imageView; @Override public View createView(Context context) { //你可以通过layout文件来创建,也可以像我一样用代码创建,不一定是Image,任何控件都可以进行翻页 imageView = new ImageView(context); imageView.setScaleType(ImageView.ScaleType.FIT_XY); return imageView; } @Override public void UpdateUI(Context context,int position, String data) { imageView.setImageResource(R.drawable.ic_default_adimage); ImageLoader.getInstance().displayImage(data,imageView); } }

4.布局文件中添加

<com.bigkoo.convenientbanner.ConvenientBanner android:id="@+id/convenientBanner" android:layout_width="match_parent" android:layout_height="match_parent" app:canLoop="true"/>

5.Activity中添加

public class GoodsDetail extends AppCompatActivity implements AdapterView.OnItemClickListener, ViewPager.OnPageChangeListener, OnItemClickListener { private ConvenientBanner convenientBanner; protected ImageLoader imageLoader; private List<String> networkImages=new ArrayList<String>(); protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); netinit(); } private void netinit() { campusShopbean=(CampusShopBean)getIntent().getSerializableExtra("campusgoods"); convenientBanner = (ConvenientBanner) findViewById(R.id.convenientBanner); imageLoader = ImageLoader.getInstance(); imageLoader.init(ImageLoaderConfiguration.createDefault(this)); for(int i=0;i<campusShopbean.getImgs().size();i++){ networkImages.add(Url.picUrl+campusShopbean.getImgs().get(i).getImg()); } convenientBanner.setPages(new CBViewHolderCreator<NetworkImageHolderView>() { @Override public NetworkImageHolderView createHolder() { return new NetworkImageHolderView(); } },networkImages) //设置指示器是否可见 .setPointViewVisible(true) //设置自动切换(同时设置了切换时间间隔) .startTurning(2000) //设置两个点图片作为翻页指示器,不设置则没有指示器,可以根据自己需求自行配合自己的指示器,不需要圆点指示器可用不设 .setPageIndicator(new int[]{R.drawable.ic_page_indicator, R.drawable.ic_page_indicator_focused}) //设置指示器的方向(左、中、右) .setPageIndicatorAlign(ConvenientBanner.PageIndicatorAlign.ALIGN_PARENT_RIGHT) //设置点击监听事件 .setOnItemClickListener(this) //设置手动影响(设置了该项无法手动切换) .setManualPageable(true); } @Override public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) { } @Override public void onPageSelected(int position) { //Toast.makeText(context,"监听到翻到第"+position+"了",Toast.LENGTH_SHORT).show(); } @Override public void onPageScrollStateChanged(int state) { } @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { String transforemerName = DefaultTransformer.class.getSimpleName(); try { Class cls = Class.forName("com.ToxicBakery.viewpager.transforms." + transforemerName); ABaseTransformer transforemer= (ABaseTransformer)cls.newInstance(); convenientBanner.getViewPager().setPageTransformer(true,transforemer); //部分3D特效需要调整滑动速度 if(transforemerName.equals("StackTransformer")){ convenientBanner.setScrollDuration(1200); } } catch (ClassNotFoundException e) { e.printStackTrace(); } catch (java.lang.InstantiationException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } } @Override public void onItemClick(int position) { //Toast.makeText(context,"点击了第"+position+"个",Toast.LENGTH_SHORT).show(); } }
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