Toolbar和Menu的结合

女爷i 2022-07-19 06:00 223阅读 0赞

## Toolbar和Menu的结合 ##

1.在res目录下新建menu目录，在menu目录创建一个menu\_item.xml文件，文件内容：

<?xml version="1.0" encoding="utf-8"?>
    <menu xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto">
        <item android:id="@+id/menu_item1" android:enabled="true" android:orderInCategory="100" android:title="Save" android:visible="true" app:showAsAction="ifRoom"/>
       
        <item android:id="@+id/menu_item2" android:enabled="true" android:icon="@mipmap/ic_launcher" android:orderInCategory="90" android:title="icon" android:visible="true" app:showAsAction="ifRoom" />
    </menu>

activity中代码：

public class MainActivity extends AppCompatActivity { 
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            supportRequestWindowFeature(Window.FEATURE_NO_TITLE);
            setContentView(R.layout.activity_main);
    
            final TextView tv = (TextView) findViewById(R.id.tv);
            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            if (toolbar == null) return;
            toolbar.setTitle(R.string.app_name);
            toolbar.setNavigationIcon(R.mipmap.ic_launcher);
    
            setSupportActionBar(toolbar);//如果需要给toolbar设置事件监听，需要将toolbar设置支持actionbar
    
            toolbar.setNavigationOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    finish();
                }
            });
            //toolbar的menu点击事件的监听
            toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
                @Override
                public boolean onMenuItemClick(MenuItem item) {
    
                    if (item.getItemId() == R.id.menu_item1) {
                        tv.setText(item.getTitle());
                    } else if (item.getItemId() == R.id.menu_item2) {
                        tv.setText(item.getTitle());
                    }
                    return true;
                }
            });
        }
    
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
    
            getMenuInflater().inflate(R.menu.menu_item, menu);//加载menu文件到布局
    
            return true;
        }
    }

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![这里写图片描述][20160810220918241]

[20160810220918241]: /images/20220718/1497b6179efc4effa286a0ffcf6995fb.png