利用DrawerLayout和触摸事件分发实现抽屉侧滑效果

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  }}

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;  }}

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));  }}

<?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>