android TabHost 对象报错

Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TabHost.setup()' on a null object reference
at com.example.ceshi.MainActivity.onCreate(MainActivity.java:31)

没有解决

MainActivity：

package com.example.ceshi;import androidx.appcompat.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.view.LayoutInflater;import android.view.View;import android.view.animation.AnimationUtils;import android.widget.GridView;import android.widget.ImageSwitcher;import android.widget.ImageView;import android.widget.RatingBar;import android.widget.SeekBar;import android.widget.SimpleAdapter;import android.widget.TabHost;import android.widget.Toast;import android.widget.ViewSwitcher;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;public class MainActivity extends AppCompatActivity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        TabHost t = (TabHost) findViewById(android.R.id.tabhost);        t.setup();        LayoutInflater i = LayoutInflater.from(this);        i.inflate(R.layout.tab1,t.getTabContentView());        i.inflate(R.layout.tab2,t.getTabContentView());        t.addTab(t.newTabSpec("tab1").setIndicator("竞选表情").setContent(R.id.left));        t.addTab(t.newTabSpec("tab2").setIndicator("爱你").setContent(R.id.right));    }}

布局文件：

<?xml version="1.0" encoding="utf-8"?>

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