我创建了可滚动的标签栏,使用 tabhost、tabwidget 和 Horizontalscrollbar,layout_gravity 位于底部。现在,我想为此创建自定义 API,因此任何人都可以根据他们的要求使用该 api 更改文本大小、高度、宽度等。
标签栏.java
package com.tabbar.project;
import android.app.TabActivity;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Color;
import android.os.Bundle;
import android.widget.TabHost;
public class Tabbar extends TabActivity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Resources res = getResources();
// TabHost will have Tabs
TabHost tabHost = getTabHost();
/* TabSpec used to create a new tab.
* By using TabSpec only we can able to setContent to the tab.
* By using TabSpec setIndicator() we can set name to tab.
* TabSpec setContent() is used to set content for a particular tab.*/
//adding tabbar items
TabHost.TabSpec spec;
Intent intent;
intent = new Intent().setClass(this, FirstActivity.class);
spec = tabHost.newTabSpec("first").setIndicator("Contact", res.getDrawable(R.drawable.contact_img)).setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, SecondActivity.class);
spec = tabHost.newTabSpec("second").setIndicator("Dial", res.getDrawable(R.drawable.dial_img)).setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, ThirdActivity.class);
spec = tabHost.newTabSpec("third").setIndicator("Movie", res.getDrawable(R.drawable.movie_img)).setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, FourthActivity.class);
spec = tabHost.newTabSpec("fourth").setIndicator("gellary", res.getDrawable(R.drawable.gellary_img)).setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, FifthActivity.class);
spec = tabHost.newTabSpec("fifth").setIndicator("Opera", res.getDrawable(R.drawable.opera_img)).setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, SixthActivity.class);
spec = tabHost.newTabSpec("sixth").setIndicator("Contacts", res.getDrawable(R.drawable.contact_img)).setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, SeventhActivity.class);
spec = tabHost.newTabSpec("seventh").setIndicator("Dial", res.getDrawable(R.drawable.dial_img)).setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, EightActivity.class);
spec = tabHost.newTabSpec("eight").setIndicator("Movie", res.getDrawable(R.drawable.movie_img)).setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, NinthActivity.class);
spec = tabHost.newTabSpec("ninth").setIndicator("Gellary", res.getDrawable(R.drawable.gellary_img)).setContent(intent);
tabHost.addTab(spec);
intent = new Intent().setClass(this, TenthActivity.class);
spec = tabHost.newTabSpec("tenth").setIndicator("Opera", res.getDrawable(R.drawable.opera_img)).setContent(intent);
tabHost.addTab(spec);
// set the width of tab
for(int i=0;i<tabHost.getTabWidget().getChildCount();i++){
tabHost.getTabWidget().getChildAt(i).getLayoutParams().width = 64;
}
//provide a method/function for setting height
// set the Height of tab
for(int i=0;i<tabHost.getTabWidget().getChildCount();i++){
tabHost.getTabWidget().getChildAt(i).getLayoutParams().height = 60;
}
// set the background color of tab (#50000000-transparent,#7392B5)
for(int i=0;i<tabHost.getTabWidget().getChildCount();i++){
tabHost.getTabWidget().getChildAt(i).setBackgroundColor(Color.parseColor("#50000000"));
}
//tabHost.getTabWidget().getChildAt(0).;
tabHost.setCurrentTab(0);
}
}
主要的.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="5dp"
android:background="@drawable/zero"
>
<TabHost android:id="@android:id/tabhost" xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:visibility="visible">
<HorizontalScrollView
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:scrollbars="none">
<TabWidget android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="@android:id/tabs"
android:layout_gravity="bottom"
android:tabStripEnabled="false"
/>
</HorizontalScrollView>
<FrameLayout android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@android:id/tabcontent"/>
</TabHost>
</LinearLayout>