Android UI开发第二十八篇――Fragment中使用左右滑动菜单

        Fragment实现了Android UI的分片管理，尤其在平板开发中，好处多多。这一篇将借助Android UI开发第二十六篇――Fragment间的通信、 Android UI开发第二十七篇――实现左右划出菜单 来实现。看图1的效果，左边使用LeftFragment实现，中间使用的CenterFragment实现。

public class SlidingActivity extends FragmentActivity implements LeftShowCenter{ 	private SlidingMenu mSlidingMenu; 	private CenterFragment centerFragment; 	@Override 	protected void onCreate(Bundle arg0) { 		super.onCreate(arg0); 		setContentView(R.layout.main);  		DisplayMetrics dm = new DisplayMetrics(); 		getWindowManager().getDefaultDisplay().getMetrics(dm);  		mSlidingMenu = (SlidingMenu) findViewById(R.id.slidingMenu); 		mSlidingMenu.setLeftWidth((dm.widthPixels / 5) * 2); 		mSlidingMenu.setRightWidth((dm.widthPixels / 5) * 3);  		View leftView = getLayoutInflater().inflate(R.layout.left_frame, null); 		View rightView = getLayoutInflater().inflate(R.layout.right_frame, null); 		View centerView = getLayoutInflater().inflate(R.layout.center_frame, null);  		mSlidingMenu.setLeftView(leftView); 		mSlidingMenu.setRightView(rightView); 		mSlidingMenu.setCenterView(centerView);  		FragmentTransaction t = this.getSupportFragmentManager() 				.beginTransaction(); 		LeftFragment leftFragment = new LeftFragment(); 		t.replace(R.id.left_frame, leftFragment);  		RightFragment rightFragment = new RightFragment(); 		t.replace(R.id.right_frame, rightFragment);  		centerFragment = new CenterFragment(); 		t.replace(R.id.center_frame, centerFragment); 		t.commit(); 	}  	public void showLeft() { 		mSlidingMenu.showLeftView(); 	}  	public void showRight() { 		mSlidingMenu.showRightView(); 	}  	public void showCenter() { 		mSlidingMenu.showCenterView(); 	}  	@Override 	public void leftShowCenter(int id) { 		// TODO Auto-generated method stub 		 		if(centerFragment!=null){ 			centerFragment.updateView(id); 		} 	} }

       SlidingActivity继承自FragmentActivity，实现了LeftShowCenter的接口方法，LeftShowCenter接口的主要目的是实现Fragment间的通信。

                 图1

/**
* @author 张兴业
* android开发进阶群：241395671
*/