将设置的3个点居中或搜索

时间:2016-10-09 17:46:04

标签: java android

如您所见,菜单的3个点或搜索按钮位于工具栏的前三分之一处。我该如何居中呢? 如果它相关 - 我的一些XML:

tool_bar.xml:

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/ColorPrimary"
    android:elevation="4dp" >

    <ImageView
        android:layout_width="50dp"
        android:layout_height="50dp"
        android:layout_gravity="start"
        android:src="@drawable/app_icon" />

</android.support.v7.widget.Toolbar>

activity_main.xml中:

<include
    android:id="@+id/tool_bar"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="2"
    layout="@layout/tool_bar" >
</include>
<other views>

searchable.xml:

<searchable xmlns:android="http://schemas.android.com/apk/res/android"
    android:hint="@string/hint_search"
    android:icon="@drawable/magnifying_glass"
    android:label="@string/app_name"
    android:searchSuggestAuthority="com.app.recommendations.content_provider"
    android:searchSuggestIntentAction="android.intent.action.VIEW"
    android:searchSuggestIntentData=""
    android:voiceSearchMode="showVoiceSearchButton|launchRecognizer" />

main_menu.xml:

...
    <item
        android:id="@+id/search"
        android:icon="@drawable/magnifying_glass"
        android:title="@string/hint_search"
        app:actionViewClass="android.support.v7.widget.SearchView"
        app:showAsAction="collapseActionView|ifRoom"/>
...

enter image description here

3 个答案:

答案 0 :(得分:0)

更改too_bar.xml的代码

<android.support.design.widget.AppBarLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:theme="@style/AppTheme.AppBarOverlay">

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:gravity="center"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="?attr/colorPrimary"
                app:popupTheme="@style/AppTheme.PopupOverlay">
                    <ImageView
                        android:layout_width="50dp"
                        android:layout_height="50dp"
                        android:layout_gravity="start"
                        android:src="@drawable/app_icon" />
           </android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>

答案 1 :(得分:0)

您可以使用ActionMenuView创建自定义工具栏。

在您的toolbar.xml中

    <android.support.v7.widget.Toolbar
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary"
        app:popupTheme="@style/AppTheme.PopupOverlay" >
          <android.support.v7.widget.ActionMenuView
              android:id="@+id/action_menu"
              android:gravity="center"
              android:layout_width="wrap_content"
              android:layout_height="?attr/actionBarSize"/>
    </android.support.v7.widget.Toolbar>

在您的MainActivity中,

   public class MainActivity extends AppCompatActivity {
        ActionMenuView actionMenuView;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
              super.onCreate(savedInstanceState);
              setContentView(R.layout.activity_main);
              Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
              setSupportActionBar(toolbar);

              actionMenuView = (ActionMenuView) toolbar.findViewById(R.id.action_menu);
              actionMenuView.setOnMenuItemClickListener(new ActionMenuView.OnMenuItemClickListener() {
                      @Override
                      public boolean onMenuItemClick(MenuItem menuItem) {
                         return onOptionsItemSelected(menuItem);
                      }
               });
        }

        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
           getMenuInflater().inflate(R.menu.main, actionMenuView.getMenu());
           return true;
        }
   }  

将ActionViewMenu的重力设置为“居中”。我希望它会对你有所帮助。

答案 2 :(得分:0)

我没有使用android:layout_weight="2"android:layout_height="0dp",而是将高度设置为wrap_content,这使得工具栏精简并且居中!