有時候經常使用別人用Tabhost+其它的實現demo。單純利用Tabhost該如何使用呢?
下面看例子:
public class MainActivity extends TabActivity {
public TabHost tabHost;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// 獲取對象
tabHost = getTabHost();
tabHost.addTab(tabHost.newTabSpec("index").setIndicator("實時新聞")
.setContent(new Intent(this, IndexActivity.class)));
tabHost.addTab(tabHost.newTabSpec("center").setIndicator("我的空間")
.setContent(new Intent(this, MiddleActivity.class)));
tabHost.addTab(tabHost.newTabSpec("self").setIndicator("設置")
.setContent(new Intent(this, LastActivity.class)));
// 指定的當前的tab
// 通過索引指定 索引從0開始
// 即一開始要顯示的是哪一頁
tabHost.setCurrentTab(0); // 從零開始
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
二、效果圖
(2)Tabhost選項卡置於底部的例子
採用LinearLayout佈局,設置Weight屬性就可以將選項卡位於底部
1、xml佈局文件
<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/tabhost"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@android:color/white"
android:orientation="vertical" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<FrameLayout
android:id="@android:id/tabcontent"
android:layout_width="fill_parent"
android:layout_height="0dip"
android:layout_weight="1.0" >
</FrameLayout>
<TabWidget
android:id="@android:id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</TabWidget>
</LinearLayout>
</TabHost>
2、MainActivity
public class MainActivity extends ActivityGroup
{
private TabHost mTabHost;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initTabs();
}
private void initTabs()
{
mTabHost = (TabHost) findViewById(R.id.tabhost);
mTabHost.setup(this.getLocalActivityManager());
Intent intent = new Intent(this, HomepageActivity.class);
mTabHost.addTab(mTabHost.newTabSpec("Tab1")
.setIndicator(getString(R.string.homepage_indicator), getResources().getDrawable(R.drawable.homepage_indicator_selector))
.setContent(intent));
intent = new Intent(this, BillboardActivity.class);
mTabHost.addTab(mTabHost.newTabSpec("Tab2")
.setIndicator(getString(R.string.billboard_indicator), getResources().getDrawable(R.drawable.billboard_indicator_selector))
.setContent(intent));
intent = new Intent(this, MyLotteryActivity.class);
mTabHost.addTab(mTabHost.newTabSpec("Tab3")
.setIndicator(getString(R.string.mylottery_indicator), getResources().getDrawable(R.drawable.mylottery_indicator_selector))
.setContent(intent));
intent = new Intent(this, MoreActivity.class);
mTabHost.addTab(mTabHost.newTabSpec("Tab4")
.setIndicator(getString(R.string.more_indicator), getResources().getDrawable(R.drawable.more_indicator_selector))
.setContent(intent));
}
}
3、效果圖