使用Fragment+FragmentManage實(shí)現(xiàn)tab主界面（不可滑動）
優(yōu)點(diǎn)：
- 簡單鬼癣、易懂
- 代碼整潔
注意：Fragment的hide和show不走任何的生命周期，hide和show的時(shí)候走
@Override
public void onHiddenChanged(boolean hidden) {
super.onHiddenChanged(hidden);
if (hidden){//相當(dāng)于調(diào)用了onPause();
}else {//類似于調(diào)用了onResume(與onResume區(qū)別：第一次創(chuàng)建Fragment的時(shí)候沒走這個(gè)方法)
}
}
效果圖：
image
@Route(path = "/main/main")
public class MainActivity extends BaseActivity {
@BindView(R2.id.fl)
FrameLayout fl;
@BindView(R2.id.ll_bottom)
LinearLayout llBottom;
private Fragment mCurrentFragment;
private List<Fragment> fragmentList = new ArrayList<>();
@Override
protected int getLayoutResID() {
return R.layout.main_activity_main;
}
@Override
protected void init(Bundle savedInstanceState) {
for (int i = 0; i < llBottom.getChildCount(); i++) {
//fragmentList初始化
fragmentList.add(null);
final int finalI = i;
//順便設(shè)置子View的點(diǎn)擊事件
llBottom.getChildAt(i).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
setTab(finalI);
}
});
}
/**
* 要寫在fragmentList初始化之后
*/
setTab(0);
}
@Override
protected void initEvent() {
}
private void setTab(int pos) {
Fragment fragment = getFragment(pos);
if (fragment != null && mCurrentFragment != fragment) {
Fragment oldFragment = mCurrentFragment;
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
if (oldFragment != null) {
transaction.hide(oldFragment);
}
if (fragment.isAdded()) {
transaction.show(fragment);
} else {
transaction.add(R.id.fl, fragment);
}
transaction.commit();
mCurrentFragment = fragment;
}
}
public Fragment getFragment(int pos) {
//使用fragmentList存儲Fragment，不至于產(chǎn)生多個(gè)成員變量的fragment影響代碼整潔度
if (fragmentList.get(pos) != null) {
return fragmentList.get(pos);
}
Fragment fragment = null;
//根據(jù)tab數(shù)量自行加減fragment
switch (pos) {
case 0:
fragment = new FirstFragment();
break;
case 1:
fragment = (Fragment) ARouter.getInstance().build(ARouterConstants.FRAGMENT_USER_USER).navigation();
break;
case 2:
fragment = (Fragment) ARouter.getInstance().build(ARouterConstants.FRAGMENT_DESIGN_DESIGN).navigation();
break;
}
fragmentList.set(pos, fragment);
return fragment;
}
}
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="hjt.com.module.main.activity.MainActivity">
<FrameLayout
android:id="@+id/fl"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"/>
<LinearLayout
android:id="@+id/ll_bottom"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#2a7e2a"
android:gravity="center"
android:padding="10dp"
android:text="module_main"
android:textColor="@color/white"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#1cbaad"
android:gravity="center"
android:padding="10dp"
android:text="module_user"
android:textColor="@color/white"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:background="#831f81"
android:gravity="center"
android:maxLines="1"
android:padding="10dp"
android:text="module_design"
android:textColor="@color/white"/>
</LinearLayout>
</LinearLayout>
自己新建幾個(gè)Fragment添加進(jìn)去就OK了
