Android Material Design Toolbar笔记1

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设置Toolbar顶栏的图标点击事件

设置AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="com.example.yxw.shipingwangzhang">    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:roundIcon="@mipmap/ic_launcher_round"        android:supportsRtl="true"        android:theme="@style/AppTheme">        <activity android:name=".MainActivity" android:label="主页">            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application>

设置menu.xml

<?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/backup"        android:icon="@drawable/ic_backup"        android:title="title"        app:showAsAction="always" />    <item        android:id="@+id/delete"        android:icon="@drawable/ic_delete"        android:title="Delete"        app:showAsAction="ifRoom"/>    <item        android:id="@+id/setting"        android:icon="@drawable/ic_settings"        android:title="Settings"        app:showAsAction="never"/></menu>

设置MainActivity

package com.example.yxw.shipingwangzhang;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.support.v7.widget.Toolbar;import android.view.Menu;import android.view.MenuItem;import android.widget.Toast;public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Toolbar toolbar=(Toolbar)findViewById(R.id.toolbar);        setSupportActionBar(toolbar);    }    @Override    public boolean onCreateOptionsMenu(Menu menu) {        //把menu.xml设置到Toolbar        getMenuInflater().inflate(R.menu.toolbar,menu);        return true;    }    @Override    public boolean onOptionsItemSelected(MenuItem item) {        switch (item.getItemId()){            //设置点击事件Toolbar            case R.id.backup:                Toast.makeText(this,"backup",Toast.LENGTH_SHORT).show();                break;            case R.id.delete:                Toast.makeText(this,"delete",Toast.LENGTH_SHORT).show();                break;            case R.id.setting:                Toast.makeText(this,"setting",Toast.LENGTH_SHORT).show();                break;                default:        }        return true;    }}

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