Android中的menu和navigation的选项卡使用案例

Android 中使用menu 与 navigation的使用案例

效果如下：

1、创建FirstFragment、SecondFragment、ThirdFragment 三个Fragment的

  1.1）、FirstFragment.java

package com.example.aidldemo;


import android.animation.ObjectAnimator;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

import java.util.Random;


/**
 * A simple {@link Fragment} subclass.
 */
public class FirstFragment extends Fragment {

    private ImageView iv;
    public FirstFragment() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        return inflater.inflate(R.layout.fragment_first, container, false);
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        iv = getView().findViewById(R.id.imageView);
        final ObjectAnimator oa = ObjectAnimator.ofFloat(iv,"x",0);
        oa.setDuration(500);
        iv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(!oa.isRunning()){
                    float dx = new Random().nextBoolean() ? 100 : -100;
                    oa.setFloatValues(iv.getX(),iv.getRotation()+dx);
                    oa.start();
                }
            }
        });
    }


}

1.2）、first_fragment.xml

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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:context=".FirstFragment">

    <ImageView
        android:id="@+id/imageView"
        android:layout_width="100dp"
        android:layout_height="100dp"
        android:layout_gravity="center"
        android:src="@android:drawable/presence_away" />
</FrameLayout>

2、在res目录下创建menu资源文件：

 my_menu.xml 文件

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

    <item
        android:id="@+id/firstFragment"
        android:icon="@android:drawable/ic_lock_lock"
        android:title="移动" />
    <item
        android:id="@+id/secondFragment"
        android:icon="@android:drawable/ic_menu_always_landscape_portrait"
        android:title="旋转" />
    <item
        android:id="@+id/thirdFragment"
        android:icon="@android:drawable/editbox_dropdown_light_frame"
        android:title="缩放" />
</menu>

3、在res目录下创建navigation资源文件

 my_nav.xml 文件

<?xml version="1.0" encoding="utf-8"?>
<navigation 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:id="@+id/my_nav"
    app:startDestination="@id/firstFragment">

    <fragment
        android:id="@+id/firstFragment"
        android:name="com.example.aidldemo.FirstFragment"
        android:label="fragment_first"
        tools:layout="@layout/fragment_first" />
    <fragment
        android:id="@+id/secondFragment"
        android:name="com.example.aidldemo.SecondFragment"
        android:label="fragment_second"
        tools:layout="@layout/fragment_second" />
    <fragment
        android:id="@+id/thirdFragment"
        android:name="com.example.aidldemo.ThirdFragment"
        android:label="fragment_third"
        tools:layout="@layout/fragment_third" />
</navigation>

4、在res目录下创建drawable资源文件：

 top_solid.xml 文件

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!--这个是按钮边框设置为四周 并且宽度为1-->
    <item
        android:right="0dp"
        android:left="0dp"
        android:top="1dp"
        android:bottom="0dp">
        <shape>
            <!--这个是背景颜色-->
            <solid android:color="#CCC" />
            <!--这个是按钮中的字体与按钮内的四周边距-->
            <padding android:bottom="5dp"
                android:left="5dp"
                android:right="5dp"
                android:top="5dp" />
        </shape>
    </item>
</selector>

5、MainActivity.java 文件

package com.example.aidldemo;

import android.support.design.widget.BottomNavigationView;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

import androidx.navigation.NavController;
import androidx.navigation.Navigation;
import androidx.navigation.ui.AppBarConfiguration;
import androidx.navigation.ui.NavigationUI;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        BottomNavigationView bottomNavigationView = findViewById(R.id.bottomNavigationView);
        NavController controller = Navigation.findNavController(this,R.id.fragment);
        AppBarConfiguration configuration = new AppBarConfiguration.Builder(bottomNavigationView.getMenu()).build();
        NavigationUI.setupActionBarWithNavController(this,controller,configuration);
        NavigationUI.setupWithNavController(bottomNavigationView,controller);

    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
    }
}

activity_main.xml文件

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:context=".MainActivity">

    <fragment
        android:id="@+id/fragment"
        android:name="androidx.navigation.fragment.NavHostFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginEnd="8dp"
        app:defaultNavHost="true"
        app:layout_constraintBottom_toTopOf="@+id/bottomNavigationView"
        app:layout_constraintEnd_toEndOf="parent"
        app:navGraph="@navigation/my_nav" />

    <android.support.design.widget.BottomNavigationView
        android:id="@+id/bottomNavigationView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="1.0"
        android:background="@drawable/top_solid"
        app:menu="@menu/my_menu">

    </android.support.design.widget.BottomNavigationView>
</android.support.constraint.ConstraintLayout>

6、github源码链接 

 https://github.com/hongchuanfeng/AndroidToMenuAndNavigation