Android 选项卡帮助.应用程序打开时如何将第二个选项卡设置为默认值? [英] Android Tab Help. How to set 2nd tab as default when app opens?

问题描述

我创建了一个包含 3 个标签的应用.该应用程序运行良好，但我希望在应用程序打开时选择并加载第二个选项卡.我该如何设置?

I have created an app with 3 tabs. The app works fine but I want the 2nd tab to be selected and loaded when the app opens. How can I set that?

这是我的代码:

public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TabHost tabHost = getTabHost();



        // Tab for Home
        TabSpec homespec = tabHost.newTabSpec("Home");
        // setting Title and Icon for the Tab
        homespec.setIndicator("Home",getResources().getDrawable(R.drawable.icons_home_tab));
        Intent photosIntent = new Intent(this, HomeActivity.class);
        homespec.setContent(photosIntent);

        // Tab for Child
        TabSpec childspec = tabHost.newTabSpec("Child");
        childspec.setIndicator("Child",getResources().getDrawable(R.drawable.icons_child_tab));
        Intent homeIntent = new Intent(this, ChildActivity.class);
        childspec.setContent(homeIntent);

        // Tab for Account
        TabSpec accspec = tabHost.newTabSpec("Account");
        accspec.setIndicator("Account",getResources().getDrawable(R.drawable.icons_account_tab));
        Intent accIntent = new Intent(this, AccountActivity.class);
        accspec.setContent(accIntent);

        // Adding all TabSpec to TabHost
        tabHost.addTab(homespec); // Adding home tab
        tabHost.addTab(childspec); // Adding child tab
        tabHost.addTab(accspec); //Adding account tab
        }

推荐答案

在tabHost中添加tab后，使用该方法设置当前tab

Use this method to set the current tab after you added tab in tabHost

tabHost.setCurrentTab(1);  // here pass the tab index its starting from 0

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