这里简单记录下通过TextView+LinearLayout+Fragment来实现Android底部导航栏。
布局
- <!--fragment_text_tab.xml-->
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:orientation="vertical">
- <FrameLayout
- android:id="@+id/sub_content"
- android:layout_width="match_parent"
- android:layout_height="0dp"
- android:layout_weight="1">
- <TextView
- android:id="@+id/activity_text_view"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_centerHorizontal="true"
- android:text="@string/tips"
- android:textColor="@color/colorPrimary"
- android:textSize="18sp"
- android:textStyle="bold|italic"/>
- </FrameLayout>
- <View
- android:layout_width="match_parent"
- android:layout_height="1px"
- android:background="@color/grey_300"/>
- <include layout="@layout/tab_layout_for_bottom"/>
- </LinearLayout>
- <!--tab_layout_for_bottom-->
- <?xml version="1.0" encoding="utf-8"?>
- <LinearLayout
- xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:tools="http://schemas.android.com/tools"
- android:layout_width="match_parent"
- android:layout_height="56dp"
- android:background="@color/white"
- android:orientation="horizontal"
- tools:showIn="@layout/fragment_text_tab">
- <TextView
- android:id="@+id/tv_home"
- style="@style/viewpager_navigation_bar_tab_style"
- android:drawableTop="@drawable/home"
- android:text="@string/item_home"/>
- <TextView
- android:id="@+id/tv_location"
- style="@style/viewpager_navigation_bar_tab_style"
- android:drawableTop="@drawable/location"
- android:text="@string/item_location"/>
- <TextView
- android:id="@+id/tv_like"
- style="@style/viewpager_navigation_bar_tab_style"
- android:drawableTop="@drawable/like"
- android:text="@string/item_like"/>
- <TextView
- android:id="@+id/tv_person"
- style="@style/viewpager_navigation_bar_tab_style"
- android:drawableTop="@drawable/person"
- android:text="@string/item_person"/>
- </LinearLayout>
代码
- mTHome.setOnClickListener(this);
- mTLocation.setOnClickListener(this);
- mTLike.setOnClickListener(this);
- mTMe.setOnClickListener(this);
- setDefaultFragment();//设置默认显示Fragment
- @Override
- public void onClick(View view) {
- resetTabState();//reset the tab state
- switch (view.getId()) {
- case R.id.tv_home:
- setTabState(mTHome, R.drawable.home_fill, getColor(R.color.colorPrimary));//设置Tab状态
- switchFrgment(0);//切换Fragment
- break;
- case R.id.tv_location:
- setTabState(mTLocation, R.drawable.location_fill, getColor(R.color.colorPrimary));
- switchFrgment(1);
- break;
- case R.id.tv_like:
- setTabState(mTLike, R.drawable.like_fill, getColor(R.color.colorPrimary));
- switchFrgment(2);
- break;
- case R.id.tv_person:
- setTabState(mTMe, R.drawable.person_fill, getColor(R.color.colorPrimary));
- switchFrgment(3);
- break;
- }
- }
Fragment的切换
- /**
- * switch the fragment accordting to id
- * @param i id
- */
- private void switchFrgment(int i) {
- FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
- switch (i) {
- case 0:
- if (mHomeFragment == null) {
- mHomeFragment = mHomeFragment.newInstance(getString(R.string.item_home));
- }
- transaction.replace(R.id.sub_content, mHomeFragment);
- break;
- case 1:
- if (mLocationFragment == null) {
- mLocationFragment = LocationFragment.newInstance(getString(R.string.item_location));
- }
- transaction.replace(R.id.sub_content, mLocationFragment);
- break;
- case 2:
- if (mLikeFragment == null) {
- mLikeFragment = LikeFragment.newInstance(getString(R.string.item_like));
- }
- transaction.replace(R.id.sub_content, mLikeFragment);
- break;
- case 3:
- if (mPersonFragment == null) {
- mPersonFragment = PersonFragment.newInstance(getString(R.string.item_person));
- }
- transaction.replace(R.id.sub_content, mPersonFragment);
- break;
- }
- transaction.commit();
- }
这里面值得注意的地方就是要用getChildFragmentManager(),否则会出现切换Fragment内容不显示的情况。
设置Tab状态
- /**
- * set the tab state of bottom navigation bar
- *
- * @param textView the text to be shown
- * @param image the image
- * @param color the text color
- */
- private void setTabState(TextView textView, int image, int color) {
- textView.setCompoundDrawablesRelativeWithIntrinsicBounds(0, image, 0, 0);//Call requires API level 17
- textView.setTextColor(color);
- }
- /**
- * revert the image color and text color to black
- */
- private void resetTabState() {
- setTabState(mTHome, R.drawable.home, getColor(R.color.black_1));
- setTabState(mTLocation, R.drawable.location, getColor(R.color.black_1));
- setTabState(mTLike, R.drawable.like, getColor(R.color.black_1));
- setTabState(mTMe, R.drawable.person, getColor(R.color.black_1));
- }
说明:这几篇文章没有过多的文字叙述,因为这些东西也不是很难,而且都是常用的,相信很多人都了如指掌了,多说亦是废话,直接上代码看的反而更清楚。
作者:K_J
来源:51CTO
时间: 2024-10-26 05:47:44