国产探花免费观看_亚洲丰满少妇自慰呻吟_97日韩有码在线_资源在线日韩欧美_一区二区精品毛片,辰东完美世界有声小说,欢乐颂第一季,yy玄幻小说排行榜完本

首頁 > 系統(tǒng) > Android > 正文

android 自定義TabActivity的實(shí)例方法

2020-04-11 12:00:25
字體:
供稿:網(wǎng)友


一、改變Tab欄的位置。
java代碼。在TabActivity的oncreate方法中添加
setContentView(R.layout.tab_host);

其中 Layout tab_host.xml 是從系統(tǒng)資源文件中摳出來之后略作修改。
系統(tǒng)原來的 tab_host.xml內(nèi)容如下

復(fù)制代碼 代碼如下:

<?xml version="1.0" encoding="utf-8"?>
<!--
/* //device/apps/common/assets/res/layout/tab_content.xml
**
** Copyright 2006, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
**     http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
-->

<TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost"
    android:layout_width="match_parent" android:layout_height="match_parent">
    <LinearLayout android:orientation="vertical"
        android:layout_width="match_parent" android:layout_height="match_parent">
        <TabWidget android:id="@android:id/tabs" android:layout_width="match_parent"
            android:layout_height="wrap_content" android:layout_weight="0" />
        <FrameLayout android:id="@android:id/tabcontent"
            android:layout_width="match_parent" android:layout_height="0dip"
            android:layout_weight="1"/>
    </LinearLayout>
</TabHost>

要實(shí)現(xiàn)TAB欄在頁面下方,只需簡單修改。

復(fù)制代碼 代碼如下:

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost"
         android:layout_width="fill_parent" android:layout_height="fill_parent">
        <LinearLayout android:orientation="vertical"
        android:layout_width="fill_parent" android:layout_height="fill_parent">
                 <FrameLayout android:id="@android:id/tabcontent"
                 android:layout_width="fill_parent" android:layout_height="0dip"
            android:layout_weight="1"/>
       <TabWidget android:id="@android:id/tabs" android:layout_width="fill_parent"
                android:layout_height="wrap_content" android:layout_weight="0" />
         </LinearLayout>
 </TabHost>

這樣,就實(shí)現(xiàn)了TAB欄在頁面下冊。需要注意的是,view的id不要修改。

二、自定義TAB的圖片。系統(tǒng)自帶的tab_indicator.xml內(nèi)容如下

復(fù)制代碼 代碼如下:

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2008 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
-->

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="0dip"
    android:layout_height="64dip"
    android:layout_weight="1"
    android:layout_marginLeft="-3dip"
    android:layout_marginRight="-3dip"
    android:orientation="vertical"
    android:background="@android:drawable/tab_indicator">

    <ImageView android:id="@+id/icon"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
    />

    <TextView android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        style="?android:attr/tabWidgetStyle"
    />

</RelativeLayout>

可以看出,默認(rèn)情況下,圖標(biāo)在文字上方,并且不能占到整個(gè)格,無法滿足設(shè)計(jì)需要。因此可以重寫該Layout。
編寫tab_in.xml

復(fù)制代碼 代碼如下:

<?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="wrap_content"
     android:layout_height="64dip"
     android:orientation="vertical"
     >
</RelativeLayout>

View view1 = inflater.inflate(R.layout.tab_in, null);;
        View view2 = inflater.inflate(R.layout.tab_in, null);;
        View view3 = inflater.inflate(R.layout.tab_in, null);;

       

        view1 .setBackgroundResource(R.drawable.record_upload_button_stateful);
        view2 .setBackgroundResource(R.drawable.record_download_button_stateful);
        view3 .setBackgroundResource(R.drawable.record_receive_button_stateful);
tabHost.addTab(tabHost
                .newTabSpec("view1")
                .setIndicator(view1)             
          );

        tabHost.addTab(tabHost
                .newTabSpec("view2")
                .setIndicator(view2)
        );

      
        tabHost.addTab(tabHost
                .newTabSpec("view3")
                .setIndicator(view3)
             );

發(fā)表評論 共有條評論
用戶名: 密碼:
驗(yàn)證碼: 匿名發(fā)表
主站蜘蛛池模板: 永修县| 宁晋县| 高安市| 布尔津县| 平罗县| 通辽市| 新蔡县| 夏邑县| 大同县| 延吉市| 喀喇| 兰坪| 宁城县| 子洲县| 达拉特旗| 宜兰市| 广河县| 沾益县| 梁平县| 平南县| 宁波市| 赤城县| 威信县| 兰溪市| 宜昌市| 永仁县| 当雄县| 东城区| 新巴尔虎右旗| 临漳县| 苏尼特右旗| 沐川县| 屏东县| 陇南市| 雅江县| 平远县| 台中市| 霞浦县| 建水县| 林口县| 湘乡市|