发现Index中使用radiobutton+Fragment并不是想象中的用Fragment的replace实现切换。这样的确会造成切换的时候重新初始化加载网络数据啥的。特别是Fragment里面的数据很复杂的时候。而是这样：
Fragmentfragment = (Fragment)mFragmentPagerAdapter
.instantiateItem(mContainer, R.id.rb_microstore);
mFragmentPagerAdapter.setPrimaryItem(mContainer,0, fragment);
mFragmentPagerAdapter.finishUpdate(mContainer);
privateFragmentPagerAdaptermFragmentPag
erAdapter=newFragmentPagerAdapter(
getSupportFragmentManager()) {
@Override
public voidsetPrimaryItem(ViewGroup container,intposition, Object object) {
currentPosition= position;
super.setPrimaryItem(container, position, object);
}
@Override
publicFragment getItem(intposition) {
switch(position) {
caseR.id.rb_discover:
return newDiscoverFrag();
caseR.id.rb_circle:
return newCircleFrag();
caseR.id.rb_myinfo:
return newPersonalCenterFrag();
caseR.id.rb_microstore:
default:
return newMicroStoreFrag();
}
}
@Override
public intgetCount() {
return4;
}
};
实现checkchangeListener
@Override
public voidonCheckedChanged(CompoundButton buttonView,booleanisChecked) {
if(isChecked) {
Fragment fragment = (Fragment)mFragmentPagerAdapter
.instantiateItem(mContainer, buttonView.getId());
mFragmentPagerAdapter.setPrimaryItem(mContainer,0, fragment);
mFragmentPagerAdapter.finishUpdate(mContainer);
}
}
这样不会多次创建各种Fragment。也会很流畅。这样需要在Fragment中重写
@Override
public voidsetMenuVisibility(booleanmenuVisible) {
super.setMenuVisibility(menuVisible);
if(this.getView() !=null)
this.getView().setVisibility(menuVisible ? View.VISIBLE: View.GONE);
}
否则会导致重影。哈哈。今天就遇到了
