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src/timeUse/app/src/main/java/com/tanshui/timeuse/adapter/MainViewPagerAdapter.java

@@ -0,0 +1,35 @@
+package com.tanshui.timeuse.adapter;
+
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentPagerAdapter;
+import androidx.viewpager2.adapter.FragmentStateAdapter;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class MainViewPagerAdapter extends FragmentPagerAdapter {
+
+    private final List<Fragment> mFragmentList = new ArrayList<>();
+
+    public MainViewPagerAdapter(FragmentManager manager) {
+        super(manager);
+    }
+
+    public void addFragment(Fragment fragment) {
+        mFragmentList.add(fragment);
+    }
+
+    @Override
+    public int getCount() {
+        return mFragmentList.size();
+    }
+
+    @NonNull
+    @Override
+    public Fragment getItem(int position) {
+        return mFragmentList.get(position);
+    }
+}

src/timeUse/app/src/main/java/com/tanshui/timeuse/fragment/TaskListFragment.java

@@ -0,0 +1,66 @@
+package com.tanshui.timeuse.fragment;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.tanshui.timeuse.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link TaskListFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class TaskListFragment extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public TaskListFragment() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment TaskListFragment.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static TaskListFragment newInstance(String param1, String param2) {
+        TaskListFragment fragment = new TaskListFragment();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_task_list, container, false);
+    }
+}

src/timeUse/app/src/main/java/com/tanshui/timeuse/fragment/appUseFragment.java

@@ -0,0 +1,66 @@
+package com.tanshui.timeuse.fragment;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.tanshui.timeuse.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link appUseFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class appUseFragment extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public appUseFragment() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment appUseFragment.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static appUseFragment newInstance(String param1, String param2) {
+        appUseFragment fragment = new appUseFragment();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_app_use, container, false);
+    }
+}

src/timeUse/app/src/main/java/com/tanshui/timeuse/fragment/main_tabFragment.java

@@ -0,0 +1,106 @@
+package com.tanshui.timeuse.fragment;
+
+import android.content.Context;
+import android.content.Intent;
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentTransaction;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.ImageButton;
+import android.widget.LinearLayout;
+
+import com.tanshui.timeuse.R;
+import com.tanshui.timeuse.appTimeUse;
+import com.tanshui.timeuse.task_show;
+
+public class main_tabFragment extends Fragment implements View.OnClickListener{
+    private Button jump_appUse;
+    private Button jump_report;
+    private Fragment TaskListFragment,reportFragment,appUseFragment;
+    private FragmentManager fragmentManager;
+    @Nullable
+    @Override
+    public Context getContext() {
+        return super.getContext();
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        View view=inflater.inflate(R.layout.fragment_main_tab, container, false);
+        initViews(view);
+        setTabSelection(R.id.jump_list);
+        return view;
+    }
+    //初始化视图对象
+    private void initViews(View view){
+        //主页面
+        Button jump_list = (Button) view.findViewById(R.id.jump_list);
+        jump_list.setOnClickListener(this);
+        //分类页面
+        jump_appUse=(Button)view.findViewById(R.id.jump_appUse);
+        jump_appUse.setOnClickListener(this);
+        //购物车页面
+        jump_report=(Button) view.findViewById(R.id.jump_report);
+        jump_report.setOnClickListener(this);
+        fragmentManager=getFragmentManager();//获得Fragment管理类
+    }
+    //点击事件
+    @Override
+    public void onClick(View v) {
+        setTabSelection(v.getId());
+    }
+    //设置Tab选中
+    public void setTabSelection(int id) {
+        //开启一个事务
+        FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
+        //隐藏所有Fragment
+        if (TaskListFragment != null) {
+            fragmentTransaction.hide(TaskListFragment);
+        }
+        if (reportFragment != null) {
+            fragmentTransaction.hide(reportFragment);
+        }
+        if (appUseFragment != null) {
+            fragmentTransaction.hide(appUseFragment);
+        }
+
+        //根据tabItem的id来执行不同的操作
+        switch (id) {
+            case R.id.jump_list:
+                if (TaskListFragment == null) {
+                    TaskListFragment = new TaskListFragment();
+                    fragmentTransaction.add(R.id.fg_content, TaskListFragment);
+                } else {
+                    fragmentTransaction.show(TaskListFragment);
+                }
+                break;
+            case R.id.jump_appUse:
+                if (appUseFragment == null) {
+                    appUseFragment = new appUseFragment();
+                    fragmentTransaction.add(R.id.fg_content, appUseFragment);
+                } else {
+                    fragmentTransaction.show(appUseFragment);
+                }
+                break;
+            case R.id.jump_report:
+                if (reportFragment == null) {
+                    reportFragment = new reportFragment();
+                    fragmentTransaction.add(R.id.fg_content, reportFragment);
+                } else {
+                    fragmentTransaction.show(reportFragment);
+                }
+                break;
+        }
+        fragmentTransaction.commit();
+
+    }
+}

src/timeUse/app/src/main/java/com/tanshui/timeuse/fragment/reportFragment.java

@@ -0,0 +1,66 @@
+package com.tanshui.timeuse.fragment;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.tanshui.timeuse.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link reportFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class reportFragment extends Fragment {
+
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public reportFragment() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment reportFragment.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static reportFragment newInstance(String param1, String param2) {
+        reportFragment fragment = new reportFragment();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_today, container, false);
+    }
+}