如何为tabhost和tabwidget创建自定义api

Question

我已经创建了可滚动的标签栏，使用tabhost, tabwidget和horizontalscrollbar，其中layout_gravity是底部。现在，我想创建自定义API，所以任何人都可以使用API改变文本大小，高度，宽度等。，根据他们的要求。

Tabbar.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);
    }

}

main。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>

Answer 1

首先，决定您想要支持的特性列表。看起来你已经有一些想法了。然后在您的Tabbar类中创建允许人们自定义它的公共方法。

一个想法可以是

public void setTabHeight(int dip) {
    //Code to set tab height goes here
}

然后人们可以访问您的Tabber和您希望他们拥有的功能。

功能的数量和Tabbar使用的通用性将取决于您的想象力和设计技能。