java - 如何在 Android 上使用 tabHost

Question

我看过 Stack Overflow 上的帖子和其他网站上的教程，但我不明白如何使用 TabHost。有人可以向我解释一下，或者给我发一个教程链接吗？

Answer 1

1. 在 ManiActivity 中扩展 TabActivity

   public class MainActivity extends TabActivity {
   
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
   
       //setContentView(R.layout.activity_main);
   
       TabHost mTabHost = getTabHost();
   
       mTabHost.addTab(mTabHost.newTabSpec("first").setIndicator("First").setContent(new Intent(this  ,FirstActivity.class )));
       mTabHost.addTab(mTabHost.newTabSpec("second").setIndicator("Second").setContent(new Intent(this , SecondActivity.class )));
       mTabHost.setCurrentTab(0);
   
   
   }
   }
   

• In this activity not use layout "activity_main.xml" .

• Tabhost mTabHost = getTabHost(); is create main tab.

• mTabHost.newTabSpec("first") is create tabspec id "first".

• setIndicator("First") is create text "First" in title tab.

• setContent(new Intent(this ,FirstActivity.class )) is use content from FirstActivity.class ( FirstActivity.java )

• mTabHost.addTab(....) is add spectab to main tab

• mTabHost.setCurrentTab(0) is defult tab when start page.

FirstActivity.java

public class FirstActivity extends Activity{

@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView( R.layout.first_layout );
}

}

SecondActivity.java

public class SecondActivity extends Activity{
@Override
protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView( R.layout.second_layout );
}
}

• "R.layout.first_layout" is content from first_layout.xml

• "R.layout.second_layout" is content from second_layout.xml

在 AndroidManifest.xml 中，在示例 xml 中添加 Activity 名称“.FirstActivity”和“.SecondActivity”。

完成!!!!!!