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
<?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、案例源代码链接