搭建一个安卓App的框架

导入的依赖

这个框架会比系统自带的Fragment更为简便，快捷

其他准备

去除顶部工具栏

添加菜单栏

activity_main.xml文件及其准备

activity_main.xml文件

注意：include里面的layout为下面罗列出来的toolbar.xml文件和container.xml文件

<?xml version="1.0" encoding="utf-8"?>
<androidx.drawerlayout.widget.DrawerLayout 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"
    tools:openDrawer="start"
    android:id="@+id/drawer_layout"
    tools:context=".MainActivity">


    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">


        <include
            android:id="@+id/include"
            layout="@layout/toolbar"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <include
            layout="@layout/container"
            android:layout_width="0dp"
            android:layout_height="0dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@id/include" />
    </androidx.constraintlayout.widget.ConstraintLayout>


    <com.google.android.material.navigation.NavigationView
        android:id="@+id/navigationView"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        app:menu="@menu/menu"
        >

    </com.google.android.material.navigation.NavigationView>

</androidx.drawerlayout.widget.DrawerLayout>

toolbar.xml

toolbar的作用是设置顶部的工具栏以及设置各菜单项的名称

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/AppBarLayout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical">

    <androidx.appcompat.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="?attr/colorPrimary"
        android:minHeight="?attr/actionBarSize"
        android:theme="?attr/actionBarTheme" />

    <TextView
        android:id="@+id/tv_title"
        android:layout_gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="25sp"
        android:textColor="@color/Black"
        android:textStyle="bold"
        android:text="TextView" />

</FrameLayout>

container.xml

container是各个项目跳转的容器，诸如FraMyCount.java的各个类都加载到container这个容器上,然后这个容器再安放到activity_main.xml上

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

    android:orientation="vertical">

</FrameLayout>```

MainActivity.java文件

import androidx.annotation.NonNull;
import androidx.appcompat.app.ActionBarDrawerToggle;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.Toolbar;
import androidx.drawerlayout.widget.DrawerLayout;

import android.os.Build;
import android.os.Bundle;
import android.view.MenuItem;
import android.widget.TextView;

import com.example.myquestionbank.fragment.FraMyCount;
import com.example.myquestionbank.fragment.FraTraLightManege;
import com.google.android.material.navigation.NavigationView;

import org.w3c.dom.Text;

import me.yokeyword.fragmentation.SupportActivity;
import me.yokeyword.fragmentation.SupportFragment;

/**
 * @author baro_knight
 * date 2020-03-11
 * */
 *
public class MainActivity extends SupportActivity {
//这里继承的SupportActivity就是导入依赖的包
    NavigationView ngv;
    TextView mytitle;
    DrawerLayout mDrawer;
    Toolbar mToolbar;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        loadRootFragment(R.id.container,new FraMyCount());
//        获取各个组件的id
        findId();
//        通过左上角的图标来打开侧滑的菜单
        openstart();
//        设置监听
        setClick();
    }

    private void openstart() {
        ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this,
                mDrawer,mToolbar,R.string.navigation_drawer_open,
                R.string.navigation_drawer_close
        );
        toggle.syncState();
        mDrawer.addDrawerListener(toggle);
    }

    private void setClick() {
//
        ngv.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
            @Override
            public boolean onNavigationItemSelected(@NonNull MenuItem item) {
                switch (item.getItemId()){
                    case R.id.menu_mycount:
                        setMyTitle("我的账户");
                        startWithPop(new FraMyCount());
                        break;
                    case R.id.menu_tra_manage:
                        setMyTitle("红绿灯管理");
                        startWithPop(new FraTraLightManege());
                        break;
                }
//              每次点击一个项目后关闭侧滑
                mDrawer.closeDrawers();
//                返回true表示在用户机中，当按击Item时，显示菜单被选中的状态
                return true;
            }

        });
    }
//设置标题
    private void setMyTitle(String theTitle) {
            mytitle.setText(theTitle);
    }

    private void findId() {
        ngv = findViewById(R.id.navigationView);
        mytitle = findViewById(R.id.tv_title);
        mDrawer = findViewById(R.id.drawer_layout);
        mToolbar = findViewById(R.id.toolbar);

    }
}

#  FraMyCount.java类

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

import com.example.myquestionbank.R;

import me.yokeyword.fragmentation.SupportFragment;

public class FraMyCount extends SupportFragment {
    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return LayoutInflater.from(getContext()).inflate(R.layout.fra_mycount,container,false);
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        TextView tvvv = view.findViewById(R.id.tvvv);
    }
}

#  FraMyCount.java类对应的xml文件（fra_mycount.xml）
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:id="@+id/tvvv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="TextView" />
</LinearLayout>

效果图：

文件链接