feat: 🐺 替代方案

app/src/main/java/cc/niushuai/dididone/ui/statistic/MyFragment.java

@@ -0,0 +1,38 @@
+package cc.niushuai.dididone.ui.statistic;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import androidx.fragment.app.Fragment;
+
+import cc.niushuai.dididone.R;
+
+/**
+ * Created by Administrator on 2016/7/8.
+ */
+public class MyFragment extends Fragment {
+
+    private TextView tv;
+    private String name;
+
+    public MyFragment(String fName) {
+        this.name = fName;
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View view = LayoutInflater.from(getActivity()).inflate(R.layout.fragment_test, container, false);
+        tv = (TextView) view.findViewById(R.id.fragment_tv);
+        tv.setText(name);
+        tv.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                tv.setText("我变了-" + name);
+            }
+        });
+        return view;
+    }
+}

app/src/main/java/cc/niushuai/dididone/ui/statistic/StatisticFragment.java

@@ -6,30 +6,23 @@ import android.view.View;
 import android.view.ViewGroup;
 
 import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
+import androidx.fragment.app.FragmentTransaction;
-import androidx.fragment.app.Fragment;
 import androidx.lifecycle.ViewModelProvider;
-import androidx.viewpager.widget.ViewPager;
-
-import com.google.android.material.tabs.TabLayout;
-
-import java.util.ArrayList;
-import java.util.List;
-import java.util.stream.Collectors;
 
+import cc.niushuai.dididone.R;
 import cc.niushuai.dididone.databinding.FragmentStatisticBinding;
 import cc.niushuai.dididone.ui.base.BaseFragment;
-import cc.niushuai.dididone.ui.statistic.charts.BaseChartFragment;
-import cc.niushuai.dididone.ui.statistic.charts.ListFragment;
-import cc.niushuai.dididone.ui.statistic.charts.MonthFragment;
-import cc.niushuai.dididone.ui.statistic.charts.OtherFragment;
-import cc.niushuai.dididone.ui.statistic.charts.WeekFragment;
 import cc.niushuai.dididone.util.XLog;
 
-public class StatisticFragment extends BaseFragment {
+public class StatisticFragment extends BaseFragment implements View.OnClickListener {
 
     private FragmentStatisticBinding binding;
-    private List<BaseChartFragment> fragments = new ArrayList<>(4);;
+
+    //三个fragment
+    private MyFragment f1;
+    private MyFragment f2;
+    private MyFragment f3;
+    private MyFragment f4;
 
     public View onCreateView(@NonNull LayoutInflater inflater,
                              ViewGroup container, Bundle savedInstanceState) {
@@ -40,38 +33,136 @@ public class StatisticFragment extends BaseFragment {
         binding = FragmentStatisticBinding.inflate(inflater, container, false);
         View root = binding.getRoot();
 
-        ViewPager viewPager = binding.statViewpager;
+        return root;
-//        SlidingTabLayout tabLayout = binding.statTabLayout;
+    }
-        TabLayout tabLayout = binding.statTabLayout;
+
+    @Override
+    public void init() {
+        initFragment1();
+    }
+
+    @Override
+    public void setListeners() {
+        binding.btn1.setOnClickListener(this);
+        binding.btn2.setOnClickListener(this);
+        binding.btn3.setOnClickListener(this);
+        binding.btn4.setOnClickListener(this);
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+
+    //显示第一个fragment
+    private void initFragment1() {
+        //开启事务，fragment的控制是由事务来实现的
+        FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
+
+        //第一种方式（add），初始化fragment并添加到事务中，如果为null就new一个
+        if (f1 == null) {
+            f1 = new MyFragment("消息");
+            transaction.add(R.id.main_frame_layout, f1);
+        }
+        //隐藏所有fragment
+        hideFragment(transaction);
+        //显示需要显示的fragment
+        transaction.show(f1);
+
+        //第二种方式(replace)，初始化fragment
+//        if(f1 == null){
+//            f1 = new MyFragment("消息");
+//        }
+//        transaction.replace(R.id.main_frame_layout, f1);
+
+        //提交事务
+        transaction.commit();
+    }
+
+    //显示第二个fragment
+    private void initFragment2() {
+        FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
 
-        // 初始化所有的fragment
+        if (f2 == null) {
-        if (fragments.isEmpty()) {
+            f2 = new MyFragment("联系人");
-            fragments.add(new ListFragment());
+            transaction.add(R.id.main_frame_layout, f2);
-            fragments.add(new WeekFragment());
-            fragments.add(new MonthFragment());
-            fragments.add(new OtherFragment());
         }
+        hideFragment(transaction);
+        transaction.show(f2);
+
+//        if(f2 == null) {
+//            f2 = new MyFragment("联系人");
+//        }
+//        transaction.replace(R.id.main_frame_layout, f2);
 
-        viewPager.setOffscreenPageLimit(1);
+        transaction.commit();
+    }
 
-        MyPagerAdapter adapter = new MyPagerAdapter(getActivity().getSupportFragmentManager(), fragments);
+    //显示第三个fragment
-        //绑定adapter
+    private void initFragment3() {
-        viewPager.setAdapter(adapter);
+        FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
-        //绑定viewPager
-        List<String> titles = fragments.stream().map(BaseChartFragment::getTitle).collect(Collectors.toList());
-        tabLayout.setupWithViewPager(viewPager);
 
-        //设置标题
+        if (f3 == null) {
-        for (int i = 0; i < titles.size(); i++) {
+            f3 = new MyFragment("动态");
-            tabLayout.getTabAt(i).setText(titles.get(i));
+            transaction.add(R.id.main_frame_layout, f3);
         }
+        hideFragment(transaction);
+        transaction.show(f3);
 
-        return root;
+//        if(f3 == null) {
+//            f3 = new MyFragment("动态");
+//        }
+//        transaction.replace(R.id.main_frame_layout, f3);
+
+        transaction.commit();
+    }
+
+    //显示第三个fragment
+    private void initFragment4() {
+        FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
+
+        if (f4 == null) {
+            f4 = new MyFragment("其他");
+            transaction.add(R.id.main_frame_layout, f4);
+        }
+        hideFragment(transaction);
+        transaction.show(f4);
+
+//        if(f3 == null) {
+//            f3 = new MyFragment("动态");
+//        }
+//        transaction.replace(R.id.main_frame_layout, f3);
+
+        transaction.commit();
+    }
+
+    //隐藏所有的fragment
+    private void hideFragment(FragmentTransaction transaction) {
+        if (f1 != null) {
+            transaction.hide(f1);
+        }
+        if (f2 != null) {
+            transaction.hide(f2);
+        }
+        if (f3 != null) {
+            transaction.hide(f3);
+        }
+        if (f4 != null) {
+            transaction.hide(f4);
+        }
     }
 
     @Override
-    public void onDestroyView() {
+    public void onClick(View v) {
-        super.onDestroyView();
+        if (v == binding.btn1) {
-        binding = null;
+            initFragment1();
+        } else if (v == binding.btn2) {
+            initFragment2();
+        } else if (v == binding.btn3) {
+            initFragment3();
+        } else if (v == binding.btn4) {
+            initFragment4();
+        }
     }
 }

app/src/main/res/layout/fragment_statistic.xml

@@ -1,38 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tl="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:background="#ffffff"
     android:orientation="vertical">
 
-    <com.google.android.material.tabs.TabLayout
+    <LinearLayout
-        android:id="@+id/stat_tab_layout"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
+        android:layout_height="48dp">
-        />
+
-    <!-- stat_tab_layout -->
+        <Button
-    <!--<com.flyco.tablayout.SlidingTabLayout
+            android:id="@+id/btn1"
-        android:id="@+id/stat_tab_layout2"
+            android:layout_width="0dp"
-        android:layout_width="match_parent"
+            android:layout_height="match_parent"
-        android:layout_height="48dp"
+            android:layout_weight="1"
-        android:background="#EEEEEE"
+            android:background="#ffffff"
-        tl:tl_divider_color="#1A000000"
+            android:text="消息" />
-        tl:tl_divider_padding="13dp"
+
-        tl:tl_divider_width="1dp"
+        <Button
-        tl:tl_indicator_color="#000000"
+            android:id="@+id/btn2"
-        tl:tl_indicator_height="1.5dp"
+            android:layout_width="0dp"
-        tl:tl_indicator_width_equal_title="true"
+            android:layout_height="match_parent"
-        tl:tl_tab_padding="22dp"
+            android:layout_weight="1"
-        tl:tl_tab_space_equal="true"
+            android:background="#ffffff"
-        tl:tl_textBold="SELECT"
+            android:text="联系人" />
-        tl:tl_textSelectColor="@color/red"
+
-        tl:tl_textUnselectColor="@color/gray_light_less"
+        <Button
-        tl:tl_underline_height="2dp" />-->
+            android:id="@+id/btn3"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:background="#ffffff"
+            android:text="动态" />
+
+        <Button
+            android:id="@+id/btn4"
+            android:layout_width="0dp"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:background="#ffffff"
+            android:text="其他" />
+    </LinearLayout>
 
-    <androidx.viewpager.widget.ViewPager
+    <FrameLayout
-        android:id="@+id/stat_viewpager"
+        android:id="@+id/main_frame_layout"
         android:layout_width="match_parent"
-        android:layout_height="0px"
+        android:layout_height="0dp"
         android:layout_weight="1"
-        android:background="@android:color/white" />
+        android:background="#dddddd"></FrameLayout>
 
 </LinearLayout>

app/src/main/res/layout/fragment_test.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#dddddd">
+
+    <TextView
+        android:id="@+id/fragment_tv"
+        android:layout_centerInParent="true"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textColor="#000000"/>
+
+</RelativeLayout>