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;@Overrideprotected 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();}@Overridepublic void leftShowCenter(int id) {// TODO Auto-generated method stubif(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：278401545
*/

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