android ViewPager在拖拽到左边和右边的时候，禁止显示黄色或者蓝色的渐变图片的解决方法

来源：互联网发布：淘宝查优惠券插件编辑：程序博客网时间：2024/05/19 15:25
import java.lang.reflect.Field;  import java.util.ArrayList;  import java.util.List;  import android.app.Activity;  import android.os.Bundle;  import android.support.v4.view.PagerAdapter;  import android.support.v4.view.ViewPager;  import android.support.v4.view.ViewPager.OnPageChangeListener;  import android.support.v4.widget.EdgeEffectCompat;  import android.view.View;  import android.view.ViewGroup;  import android.widget.ImageView;  public class MainActivity extends Activity implements OnPageChangeListener {      private ViewPager viewpager;      private List<ImageView> views;      private EdgeEffectCompat leftEdge;      private EdgeEffectCompat rightEdge;      private int[] ids = {R.drawable.iframe_4,R.drawable.iframe_5,R.drawable.iframe_6,R.drawable.iframe_7,R.drawable.iframe_8};      private MyAdapter adapter;      @Override      protected void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.activity_main);          initView();      }      private void initView() {          viewpager = (ViewPager) findViewById(R.id.viewpager);          initViewPager();          initData();      }      private void initData() {          views = new ArrayList<ImageView>();          for(int i=0;i<ids.length;i++){              ImageView iv = new ImageView(this);              iv.setImageResource(ids[i]);              views.add(iv);          }          adapter = new MyAdapter();          viewpager.setAdapter(adapter);          viewpager.setOnPageChangeListener(this);      }      class MyAdapter extends PagerAdapter{          @Override          public int getCount() {              return views.size();          }          @Override          public boolean isViewFromObject(View arg0, Object arg1) {              return arg0==arg1;          }          @Override          public void destroyItem(ViewGroup container, int position, Object object) {              ((ViewPager)container).removeView(views.get(position));          }          @Override          public Object instantiateItem(ViewGroup container, int position) {              ((ViewPager)container).addView(views.get(position));              return views.get(position);          }      }      @Override      public void onPageScrollStateChanged(int arg0) {      }      @Override      public void onPageScrolled(int arg0, float arg1, int arg2) {          if (leftEdge != null && rightEdge != null) {              leftEdge.finish();              rightEdge.finish();              leftEdge.setSize(0, 0);              rightEdge.setSize(0, 0);          }      }      @Override      public void onPageSelected(int arg0) {      }      private void initViewPager() {          try {              Field leftEdgeField = viewpager.getClass().getDeclaredField("mLeftEdge");              Field rightEdgeField = viewpager.getClass().getDeclaredField("mRightEdge");              if (leftEdgeField != null && rightEdgeField != null) {                  leftEdgeField.setAccessible(true);                  rightEdgeField.setAccessible(true);                  leftEdge = (EdgeEffectCompat) leftEdgeField.get(viewpager);                  rightEdge = (EdgeEffectCompat) rightEdgeField.get(viewpager);              }          } catch (Exception e) {              e.printStackTrace();          }      }  }
0 0