(布局)
<FrameLayout android:id="@+id/fram" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="8"/> <RadioGroup android:id="@+id/radio_group" android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:orientation="horizontal"> <RadioButton android:id="@+id/btn1" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:button="@null" android:background="@drawable/clolorselect" android:gravity="center" android:text="首页1"/> <RadioButton android:id="@+id/btn2" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:button="@null" android:background="@drawable/clolorselect" android:gravity="center" android:text="首页2"/> </RadioGroup>
(二)
创建对应的fragment并且继承Fragment包-------重写onCreateView()方法加载对应布局,例如:
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) { View view = inflater.inflate(R.layout.fragment01, container, false); list_view = view.findViewById(R.id.list_view); return view; }
(三)
//activity中创建事务设置点击事件
protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); radio_group = findViewById(R.id.radio_group); //点击切换 radio_group.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { @Override public void onCheckedChanged(RadioGroup radioGroup, @IdRes int i) { switch (i){ case R.id.btn1: getSupportFragmentManager().beginTransaction().replace(R.id.fram,new Fragment01()).commit(); break; case R.id.btn2: getSupportFragmentManager().beginTransaction().replace(R.id.fram,new Fragment02()).commit(); break; } } }); //默认选中第一个 radio_group.check(R.id.btn1); }