Android(安卓)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
*/

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