1.打开res/valus/styles.xml设置Actionbar主题

<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar"> <!--把Actionbar隐藏起来-->
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
</resources>
2.修改activity——main.xml中的代码
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />
</FrameLayout>
3.修改AndroidManifest中的代码
<activity android:name=".MainActivity"
android:label="FoodTest"> <!--在activity中添加一个label,指定在ToolBar中显示的内容-->
4.在res目录下新建一个drawable文件夹放置所需要的按钮图片资源

5.在res目录下新建一个menu文件夹,并在menu文件下下新建一个toolbar.xml
<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="Backup"
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="Setting"
app:showAsAction="never" />
</menu>
6.修改MainActivity中的代码:
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);
}
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.toolbar, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()){
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;
}
}