Android使用DrawerLayout仿QQ6.0双侧滑菜单

<&＃63;xml version="1.0" encoding="utf-8"&＃63;>

 
 
  
  
  
 
 
 
 
 

package com.luna.sidemenuactivity;
 
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v4.widget.ViewDragHelper;
import android.support.v7.app.AppCompatActivity;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.View;
 
import com.nineoldandroids.view.ViewHelper;
 
import java.lang.reflect.Field;
 
public class SideMenuActivity extends AppCompatActivity {
 DrawerLayout activity_side_menu;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_side_menu);
 
  initView();
  initEvent();
 
 
 }
 
 
 //初始化界面控件
 void initView() {
  activity_side_menu = (DrawerLayout) findViewById(R.id.activity_side_menu);
  activity_side_menu.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, GravityCompat.END);
  setDrawerLeftEdgeSize(this, activity_side_menu, 0.6f);  //设置屏幕左边的60%区域为可滑动区域
 }
 
 
 //初始化抽屉层监听
 private void initEvent() {
  //setDrawerListener已经废弃，请使用addDrawerListener
  activity_side_menu.addDrawerListener(new myDrawListener());
 }
 
 /**
  * 抽屉滑动范围控制
  */
 private void setDrawerLeftEdgeSize(Activity activity, DrawerLayout drawerLayout, float displayWidthPercentage) {
  if (activity == null || drawerLayout == null)
   return;
  try {
   // 通过反射获取到DrawerLayout的mLeftDragger属性
   Field leftDraggerField = drawerLayout.getClass().getDeclaredField("mLeftDragger");
   leftDraggerField.setAccessible(true);
   ViewDragHelper leftDragger = (ViewDragHelper) leftDraggerField.get(drawerLayout);
   // 找到 edgesize 并设置为 accessible
   Field edgeSizeField = leftDragger.getClass().getDeclaredField("mEdgeSize");
   edgeSizeField.setAccessible(true);
   int edgeSize = edgeSizeField.getInt(leftDragger);
   // 重新设置 edgesize ，以屏幕宽度为比例
   DisplayMetrics dm = new DisplayMetrics();
   activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
   edgeSizeField.setInt(leftDragger, Math.max(edgeSize, (int) (dm.widthPixels * displayWidthPercentage)));
  } catch (NoSuchFieldException e) {
   Log.e("NoSuchFieldException", e.getMessage());
  } catch (IllegalArgumentException e) {
   Log.e("IllegalArgumentExp", e.getMessage());
  } catch (IllegalAccessException e) {
   Log.e("IllegalAccessException", e.getMessage());
  }
 }
 
 
 public void openLeftSideMenu(View view) {
  activity_side_menu.openDrawer(GravityCompat.START);
 }
 
 public void openRightSideMenu(View view) {
  activity_side_menu.openDrawer(GravityCompat.END);
  activity_side_menu.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED, GravityCompat.END);
 }
 
 //自定义抽屉监听器
 class myDrawListener implements DrawerLayout.DrawerListener {
 
  @Override
  public void onDrawerSlide(View drawerView, float slideOffset) {
   View mCOntent= activity_side_menu.getChildAt(0);
   float Scale = 0.5f * (1.0f + slideOffset);
 
   if (drawerView.getTag().equals("LEFT")) {
    drawerView.setAlpha(Scale);
    ViewHelper.setTranslationX(mContent, drawerView.getMeasuredWidth() * slideOffset);
    mContent.invalidate();
   } else {
    drawerView.setAlpha(Scale);
    ViewHelper.setTranslationX(mContent, -drawerView.getMeasuredWidth() * slideOffset);
    mContent.invalidate();
   }
  }
 
  @Override
  public void onDrawerOpened(View drawerView) {
 
  }
 
  @Override
  public void onDrawerClosed(View drawerView) {
   activity_side_menu.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED, GravityCompat.END);
  }
 
  @Override
  public void onDrawerStateChanged(int newState) {
 
  }
 }
 
 
}