1.创建一个接口:
public interface ChangeFragment {
void changge(int postion);
}
2.设置一个全局变量:
public class GlobalParms {
private static HomeFragment sHomeFragment; //主页fragemnt
private static ChartsFragment sChartsFragment; //走势图fragemnt
private static ZiXunFragment sZiXunFragment; //资讯fragemnt
private static OtherFragment sOtherFragment; //其它fragemnt
public static ChangeFragment sChangeFragment; //改变选中Frangment的接口
/**
* 获取主页Fragment
*
* @return
*/
public static HomeFragment getHomeFragment() {
if (sHomeFragment == null) {
sHomeFragment = new HomeFragment();
}
return sHomeFragment;
}
/**
* 走势图fragemnt
*
* @return
*/
public static ChartsFragment getChartsFragment() {
if (sChartsFragment == null) {
sChartsFragment = new ChartsFragment();
}
return sChartsFragment;
}
/**
* 资讯fragemnt
*
* @return
*/
public static ZiXunFragment getZiXunFragment() {
if (sZiXunFragment == null) {
sZiXunFragment = new ZiXunFragment();
}
return sZiXunFragment;
}
/**
* //其它fragemnt
*
* @return
*/
public static OtherFragment getOtherFragment() {
if (sOtherFragment == null) {
sOtherFragment = new OtherFragment();
}
return sOtherFragment;
}
/**
* 设置被选中的Fragment
* @param changeFragment
*/
public static void setFragmentSelected(ChangeFragment changeFragment) {
sChangeFragment = changeFragment;
}
}
3.在MainActivity创建接口:
private void initData() {
GlobalParms.setFragmentSelected(new ChangeFragment() {
@Override
public void changge(int postion) {
mTabHost.setCurrentTab(postion);
}
});
}
4.fragment中调用接口:
//Fragment中调用接口:
GlobalParms.sChangeFragment.changge(1);