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
*/