Android选项卡学习

什么是选项卡

顶部的导航条就是选项卡了。

Android开发中添加选项卡的步骤

图片不太懂上代码:
activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<TabHost xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@android:id/tabhost"
    tools:context=".MainActivity">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">
        <TabWidget
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:id="@android:id/tabs"></TabWidget>
        <FrameLayout
            android:id="@android:id/tabcontent"
            android:layout_width="match_parent"
            android:layout_height="match_parent">
        </FrameLayout>
    </LinearLayout>
</TabHost>

tab1.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/left"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:src="@drawable/bg_left"></ImageView>
</LinearLayout>

tab2.xml文件和tab1几号一样就是改个id和改个图片就好了。

MainActivity.java

package com.example.selectitem;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.TabHost;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        TabHost tabHost = (TabHost) findViewById(android.R.id.tabhost);
        tabHost.setup();
        LayoutInflater inflater = LayoutInflater.from(this);
        inflater.inflate(R.layout.tab1,tabHost.getTabContentView());
        inflater.inflate(R.layout.tab2,tabHost.getTabContentView());
        tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("性感服装").setContent(R.id.left));
        tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("清纯服装").setContent(R.id.right));
    }
}

效果: