fragment的循环添加 ···mainactivity类 private RadioButton rb1; private RadioButton rb2; private RadioButton rb3; private RadioButton rb4; private RadioGroup rg; private ArrayList<Fragment> fragments = new ArrayList<>(); private LinearLayout lin_act; private int index = 0;
private void initData() {
Mainpresenter mainpresenter = new Mainpresenter(); mainpresenter.Attchview(this); mainpresenter.getData();
}
//加载视图 private void initView() {
lin_act = (LinearLayout) findViewById(R.id.lin_act); rb1 = (RadioButton) findViewById(R.id.rb1); rb2 = (RadioButton) findViewById(R.id.rb2); rb3 = (RadioButton) findViewById(R.id.rb3); rb4 = (RadioButton) findViewById(R.id.rb4); rg = (RadioGroup) findViewById(R.id.rg);
rg.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup group, @IdRes int checkedId) {
switch (checkedId) {
case R.id.rb1:
index = 0;
break;
case R.id.rb2:
index = 1;
break;
case R.id.rb3:
index = 2;
break;
case R.id.rb4:
index = 3;
break;
}
showFragment(index);
} });
}
/** * eventbus的事件订阅者处理事件 */ @Subscribe(threadMode = ThreadMode.MAIN) public void writeEventBus(){
}
@Override public void CallBackFragments(ArrayList<Fragment> fragments) {
this.fragments = fragments;
addFragment(fragments);
showFragment(index);
}
private void showFragment(int index) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
for (int i = 0; i < fragments.size(); i++) { transaction.hide(fragments.get(i)); }
transaction.show(fragments.get(index)); transaction.commit(); }
private void addFragment(ArrayList<Fragment> fragments) {
for (int i = 0; i < fragments.size(); i++) {
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.add(R.id.lin_act, fragments.get(i));
transaction.commit();
}
}
···另一个类 public class Mainpresenter extends BasePresenter<MainView> {
private ArrayList<Fragment> fragments;
public void getData() { //四个fragment CartFragment cartFragment = new CartFragment(); ClassifyFragment classifyFragment = new ClassifyFragment(); HomeFragment homeFragment = new HomeFragment(); MeFragment meFragment = new MeFragment();
fragments = new ArrayList<>(); fragments.add(homeFragment); fragments.add(classifyFragment); fragments.add(cartFragment); fragments.add(meFragment);
getAttchview().CallBackFragments(fragments);
} }
