利用DrawerLayout和触摸事件分发实现抽屉侧滑效果

本文实例为大家分享了DrawerLayout和触摸事件分发实现抽屉侧滑效果的具体代码，供大家参考，具体内容如下

效果展示

还是看代码实在，直接上菜了。

1.MainActivity的代码：

public class MainActivity extends AppCompatActivity implements  MyDraweLayout.GetPositionCallback {

private List<ImageView> imageList;
   private ViewPager viewPager;
   private MyAdapter adapter;
   private MyDraweLayout myDraweLayout;
   private int currentPosition;

@Override
   protected void onCreate (Bundle savedInstanceState){
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);
   viewPager = (ViewPager) findViewById(R.id.viewpager);
   myDraweLayout = (MyDraweLayout) findViewById(R.id.mydrawelayout);
   initdata();
   adapter = new MyAdapter(this, imageList);
    myDraweLayout.setCallback(this);
   viewPager.setAdapter(adapter);
     viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {
       @Override
       public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

}

@Override
       public void onPageSelected(int position) {
         currentPosition=position;
       }

@Override
       public void onPageScrollStateChanged(int state) {

}
     });

}
 private void initdata() {
   imageList = new ArrayList<ImageView>();

ImageView imageView = new ImageView(this);
   imageView.setImageResource(R.mipmap.ic_launcher);
   imageView.setScaleType(ImageView.ScaleType.FIT_XY);
   imageList.add(imageView);

imageView = new ImageView(this);
   imageView.setImageResource(R.mipmap.ic_launcher);
   imageView.setScaleType(ImageView.ScaleType.FIT_XY);
   imageList.add(imageView);

imageView = new ImageView(this);
   imageView.setImageResource(R.mipmap.ic_launcher);
   imageView.setScaleType(ImageView.ScaleType.FIT_XY);
   imageList.add(imageView);

imageView = new ImageView(this);
   imageView.setImageResource(R.mipmap.ic_launcher);
   imageView.setScaleType(ImageView.ScaleType.FIT_XY);
   imageList.add(imageView);

}

@Override
 public int position() {
   return currentPosition;//TODO 通过接口回调把当前位置传到MyDraweLayout中
 }
}

2.MyDraweLayout类中的代码：

public class MyDraweLayout extends DrawerLayout {
 public MyDraweLayout(Context context) {
   super(context);
 }

public MyDraweLayout(Context context, AttributeSet attrs) {
   super(context, attrs);
 }

public MyDraweLayout(Context context, AttributeSet attrs, int defStyle) {
   super(context, attrs, defStyle);
 }
 //TODO事件拦截
 @Override
 public boolean onInterceptTouchEvent(MotionEvent ev) {
   //Todo 获得当前位置，进行判断
   if(callback.position()==0){
     return super.onInterceptTouchEvent(ev);
   }else {
     return false;
   }
 }

public interface GetPositionCallback{
   int position();
 }
private GetPositionCallback callback;
 public void setCallback(GetPositionCallback callback){
   this.callback = callback;

}
}

3.适配器的代码;

public class MyAdapter extends PagerAdapter {

private final List<ImageView> imageList;
 private final Context contex;

public MyAdapter(Context context, List<ImageView> imageList) {
 this.contex=context;
   this.imageList = imageList;
 }

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

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

@Override
 public Object instantiateItem(ViewGroup container, int position) {
   ImageView imageView = imageList.get(position);
   container.addView(imageView);
   return imageView;
 }

@Override
 public void destroyItem(ViewGroup container, int position, Object object) {
   //super.destroyItem(container, position, object);这行代码记得删除，不然滑到Viewpager的时候会闪退哦
   container.removeView(imageList.get(position));
 }
}

4.xml布局：

<?xml version="1.0" encoding="utf-8"?>
<com.example.a43_drawelayoutandviewpager.MyDraweLayout
 android:id="@+id/mydrawelayout"
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
>
<RelativeLayout
 android:layout_width="match_parent"
 android:layout_height="match_parent">
 <android.support.v4.view.ViewPager
   android:layout_width="match_parent"
   android:layout_height="250dp"
   android:id="@+id/viewpager"/>
 </RelativeLayout>
 <ImageView

android:background="@mipmap/ic_launcher"
   android:layout_width="300dp"
   android:layout_gravity = "start"
   android:layout_height="match_parent"
   android:layout_below="@+id/viewpager"
  />
</com.example.a43_drawelayoutandviewpager.MyDraweLayout>

来源：http://blog.csdn.net/carry_code/article/details/51699249