BottomNavigationView

1.BottomNavigationView 由3部分组成，首先是layout

1  <android.support.design.widget.BottomNavigationView
2         android:id="@+id/navigation"
3         android:layout_width="match_parent"
4         android:layout_height="wrap_content"
5         android:layout_gravity="bottom"
6         android:background="?android:attr/windowBackground"
7         app:menu="@menu/bottomnav_menu" />

 

2.创建menu

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <menu xmlns:android="http://schemas.android.com/apk/res/android">
 3     <item
 4         android:id="@+id/navigation_hunt"
 5         android:icon="@mipmap/ic_home_white_48dp"
 6         android:title="@string/main_title1" />
 7 
 8     <item
 9         android:id="@+id/navigation_hall"
10         android:icon="@mipmap/ic_photo_camera_white_48dp"
11         android:title="@string/main_title2" />
12 
13     <item
14         android:id="@+id/navigation_treasury"
15         android:icon="@mipmap/ic_redeem_white_48dp"
16         android:title="@string/main_title3" />
17 
18 </menu>

 

3.代码部分主要有两个点，onCreate中设置listener，和编写事件响应方法

 1 package com.mazingtec.mazing;
 2 
 3 import android.support.annotation.NonNull;
 4 import android.support.design.widget.BottomNavigationView;
 5 import android.support.v7.app.AppCompatActivity;
 6 import android.os.Bundle;
 7 import android.support.v7.widget.Toolbar;
 8 import android.view.Menu;
 9 import android.view.MenuItem;
10 import android.view.View;
11 import android.widget.TextView;
12 import android.widget.Toast;
13 
14 public class Hall extends AppCompatActivity implements View.OnClickListener{
15 
16     private TextView toolbartitle;
17 
18     private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
19             = new BottomNavigationView.OnNavigationItemSelectedListener() {
20 
21         @Override
22         public boolean onNavigationItemSelected(@NonNull MenuItem item) {
23             switch (item.getItemId()) {
24                 case R.id.navigation_hunt:
25                     toolbartitle.setText(R.string.main_title1);
26                     return true;
27 
28                 case R.id.navigation_hall:
29                     toolbartitle.setText(R.string.main_title2);
30                     return true;
31 
32                 case R.id.navigation_treasury:
33                     toolbartitle.setText(R.string.main_title3);
34                     return true;
35             }
36             return false;
37         }
38 
39     };
40 
41     @Override
42     protected void onCreate(Bundle savedInstanceState) {
43         super.onCreate(savedInstanceState);
44         setContentView(R.layout.activity_hall);
45 
46         toolbartitle = (TextView) findViewById(R.id.toolbar_title);
47 
48         Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
49         toolbar.setTitle("");
50         setSupportActionBar(toolbar);
51         getSupportActionBar().setDisplayHomeAsUpEnabled(true);
52         getSupportActionBar().setHomeButtonEnabled(true);
53 
54         BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
55         navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
56     }
57 
58     @Override
59     public void onClick(View v) {
60 
61     }
62 
63     @Override
64     public boolean onCreateOptionsMenu(Menu menu) {
65         // Inflate the menu; this adds items to the action bar if it is present.
66         getMenuInflater().inflate(R.menu.toolbar_menu, menu);
67         return true;
68     }
69 
70     @Override
71     public boolean onOptionsItemSelected(MenuItem item) {
72         // Handle action bar item clicks here. The action bar will
73         // automatically handle clicks on the Home/Up button, so long
74         // as you specify a parent activity in AndroidManifest.xml.
75         int id = item.getItemId();
76 
77         //noinspection SimplifiableIfStatement
78         if (id == R.id.action_search) {
79             Toast.makeText(this, "搜索！", Toast.LENGTH_LONG).show();
80             return true;
81         }
82 
83         if (id == android.R.id.home) {
84             Toast.makeText(this, "哈哈！", Toast.LENGTH_LONG).show();
85             return true;
86         }
87 
88         return super.onOptionsItemSelected(item);
89     }
90 }

 

posted @ 2017-04-11 12:52  火热火热7  阅读(641)  评论(0)    收藏  举报