我的应用程序在打开时崩溃。java.lang.NullPointerException

我在Android Studio中的应用程序正在崩溃。这个应用程序是用来浪费时间的。我添加了一个切换布局的按钮，这就发生了。代码如下：

package com.doggoplayer.appperditempo;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        TextView texto =  (findViewById(R.id.textView));
        Button bottonemerdoso = (findViewById(R.id.button));
        Button bottone =  findViewById(R.id.bottone);
        TextView nodissing = findViewById(R.id.textView4);
        Button mammt = findViewById(R.id.button2);

        bottonemerdoso.setOnClickListener(v -> setContentView(R.layout.layoutlvl2));

        bottone.setOnClickListener(v -> {
            texto.getVisibility();
            texto.setVisibility(View.VISIBLE);

        });

        mammt.setOnClickListener(v -> {
            nodissing.getVisibility();
            nodissing.setVisibility(View.VISIBLE);
        });
    }}

以下是来自logcat的stacktrace：

2020-11-26 10:11:15.625 5785-5785/com.doggoplayer.appperditempo W/System: ClassLoader referenced unknown path: /data/app/com.doggoplayer.appperditempo-1/lib/arm
    2020-11-26 10:11:15.722 5785-5785/com.doggoplayer.appperditempo W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter androidx.vectordrawable.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
    2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art: Rejecting re-init on previously-failed class java.lang.Class<androidx.core.view.ViewCompat$2>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/view/View$OnUnhandledKeyEventListener;
    2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:     at void androidx.core.view.ViewCompat.setBackground(android.view.View, android.graphics.drawable.Drawable) (ViewCompat.java:2678)
    2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:     at void androidx.appcompat.widget.ActionBarContainer.<init>(android.content.Context, android.util.AttributeSet) (ActionBarContainer.java:63)
    2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:     at java.lang.Object java.lang.reflect.Constructor.newInstance0!(java.lang.Object[]) (Constructor.java:-2)
    2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:     at java.lang.Object java.lang.reflect.Constructor.newInstance(java.lang.Object[]) (Constructor.java:430)
    2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.createView(java.lang.String, java.lang.String, android.util.AttributeSet) (LayoutInflater.java:645)
    2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:787)
    2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet) (LayoutInflater.java:727)
    2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.view.LayoutInflater.rInflate(org.xmlpull.v1.XmlPullParser, android.view.View, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:858)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.view.LayoutInflater.rInflateChildren(org.xmlpull.v1.XmlPullParser, android.view.View, android.util.AttributeSet, boolean) (LayoutInflater.java:821)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.inflate(org.xmlpull.v1.XmlPullParser, android.view.ViewGroup, boolean) (LayoutInflater.java:518)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup, boolean) (LayoutInflater.java:426)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup) (LayoutInflater.java:377)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.ViewGroup androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor() (AppCompatDelegateImpl.java:896)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor() (AppCompatDelegateImpl.java:806)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void androidx.appcompat.app.AppCompatDelegateImpl.setContentView(int) (AppCompatDelegateImpl.java:693)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void androidx.appcompat.app.AppCompatActivity.setContentView(int) (AppCompatActivity.java:170)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void com.doggoplayer.appperditempo.MainActivity.onCreate(android.os.Bundle) (MainActivity.java:15)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.Activity.performCreate(android.os.Bundle) (Activity.java:6729)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.Instrumentation.callActivityOnCreate(android.app.Activity, android.os.Bundle) (Instrumentation.java:1119)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2652)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:2766)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.ActivityThread.-wrap12(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1507)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:102)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.os.Looper.loop() (Looper.java:154)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6243)
    2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:     at java.lang.Object java.lang.reflect.Method.invoke!(java.lang.Object, java.lang.Object[]) (Method.java:-2)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run() (ZygoteInit.java:891)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:781)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art: Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.View$OnUnhandledKeyEventListener" on path: DexPathList[[zip file "/data/app/com.doggoplayer.appperditempo-1/base.apk"],nativeLibraryDirectories=[/data/app/com.doggoplayer.appperditempo-1/lib/arm, /system/lib, /vendor/lib]]
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:56)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:380)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void androidx.core.view.ViewCompat.setBackground(android.view.View, android.graphics.drawable.Drawable) (ViewCompat.java:2678)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void androidx.appcompat.widget.ActionBarContainer.<init>(android.content.Context, android.util.AttributeSet) (ActionBarContainer.java:63)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at java.lang.Object java.lang.reflect.Constructor.newInstance0!(java.lang.Object[]) (Constructor.java:-2)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at java.lang.Object java.lang.reflect.Constructor.newInstance(java.lang.Object[]) (Constructor.java:430)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.createView(java.lang.String, java.lang.String, android.util.AttributeSet) (LayoutInflater.java:645)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:787)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet) (LayoutInflater.java:727)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.view.LayoutInflater.rInflate(org.xmlpull.v1.XmlPullParser, android.view.View, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:858)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.view.LayoutInflater.rInflateChildren(org.xmlpull.v1.XmlPullParser, android.view.View, android.util.AttributeSet, boolean) (LayoutInflater.java:821)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.inflate(org.xmlpull.v1.XmlPullParser, android.view.ViewGroup, boolean) (LayoutInflater.java:518)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup, boolean) (LayoutInflater.java:426)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup) (LayoutInflater.java:377)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at android.view.ViewGroup androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor() (AppCompatDelegateImpl.java:896)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor() (AppCompatDelegateImpl.java:806)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void androidx.appcompat.app.AppCompatDelegateImpl.setContentView(int) (AppCompatDelegateImpl.java:693)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void androidx.appcompat.app.AppCompatActivity.setContentView(int) (AppCompatActivity.java:170)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void com.doggoplayer.appperditempo.MainActivity.onCreate(android.os.Bundle) (MainActivity.java:15)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.Activity.performCreate(android.os.Bundle) (Activity.java:6729)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.Instrumentation.callActivityOnCreate(android.app.Activity, android.os.Bundle) (Instrumentation.java:1119)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2652)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:2766)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.ActivityThread.-wrap12(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1507)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:102)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.os.Looper.loop() (Looper.java:154)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6243)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at java.lang.Object java.lang.reflect.Method.invoke!(java.lang.Object, java.lang.Object[]) (Method.java:-2)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run() (ZygoteInit.java:891)
    2020-11-26 10:11:15.797 5785-5785/com.doggoplayer.appperditempo I/art:     at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:781)
    2020-11-26 10:11:16.456 5785-5785/com.doggoplayer.appperditempo D/AndroidRuntime: Shutting down VM
    2020-11-26 10:11:16.458 5785-5785/com.doggoplayer.appperditempo E/AndroidRuntime: FATAL EXCEPTION: main
        Process: com.doggoplayer.appperditempo, PID: 5785
        java.lang.RuntimeException: Unable to start activity ComponentInfo{com.doggoplayer.appperditempo/com.doggoplayer.appperditempo.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2699)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2766)
            at android.app.ActivityThread.-wrap12(ActivityThread.java)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1507)
            at android.os.Handler.dispatchMessage(Handler.java:102)
            at android.os.Looper.loop(Looper.java:154)
            at android.app.ActivityThread.main(ActivityThread.java:6243)
            at java.lang.reflect.Method.invoke(Native Method)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:891)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:781)
         Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.view.View.setOnClickListener(android.view.View$OnClickListener)' on a null object reference
            at com.doggoplayer.appperditempo.MainActivity.onCreate(MainActivity.java:31)
            at android.app.Activity.performCreate(Activity.java:6729)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1119)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2652)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2766) 
            at android.app.ActivityThread.-wrap12(ActivityThread.java) 
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1507) 
            at android.os.Handler.dispatchMessage(Handler.java:102) 
            at android.os.Looper.loop(Looper.java:154) 
            at android.app.ActivityThread.main(ActivityThread.java:6243) 
            at java.lang.reflect.Method.invoke(Native Method) 
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:891) 
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:781)
 

2020-11-26 10:11:15.625 5785-5785/com.doggoplayer.appperditempo W/System:ClassLoader引用的未知路径：/data/app/com.doggoplayer.appperditempo-1/lib/arm
2020-11-26 10:11:15.7225785-5785/com.doggoplayer.appperditempo W/art:Android 4.1之前的方法Android.graphics.PorterDuffColorFilter androidx.vectordrawable.graphics.drawable.VectorDrawableCompat.UpdatentFilter（Android.graphics.PorterDuffColorFilter，Android.content.res.ColorStateList，Android.graphics.PorterDuff$Mode）将错误地重写android.graphics.drawable.drawable中的包私有方法
2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art：拒绝对以前失败的类java.lang.class:java.lang.NoClassDefFoundError:解析失败：Landroid/view/view$OnUnhandledKeyEventListener；
2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:void androidx.core.view.ViewCompat.setBackground（android.view.view，android.graphics.drawable.drawable）（ViewCompat.java:2678）
2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:void androidx.appcompat.widget.ActionBarContainer.（android.content.Context，android.util.AttributeSet）（ActionBarContainer.java:63）
2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:at java.lang.Object java.lang.reflect.Constructor.newInstance0！（java.lang.Object[]）（Constructor.java:-2）
2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:at java.lang.Object java.lang.reflect.Constructor.newInstance（java.lang.Object[]）（Constructor.java:430）
2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:at-android.view.view-android.view.LayoutInflater.createView（java.lang.String，java.lang.String，android.util.AttributeSet）（LayoutInflater.java:645）
2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:at-android.view.view-android.view.view.LayoutInflater.createViewFromTag（android.view.view，java.lang.String，android.content.Context，android.util.AttributeSet，boolean）（LayoutInflater.java:787）
2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:at-android.view.view-android.view.view.LayoutInflater.createViewFromTag（android.view.view，java.lang.String，android.content.Context，android.util.AttributeSet）（LayoutInflater.java:727）
2020-11-26 10:11:15.795 5785-5785/com.doggoplayer.appperditempo I/art:void android.view.LayoutInflater.rInflate（org.xmlpull.v1.XmlPullParser，android.view.view，android.content.Context，android.util.AttributeSet，boolean）（LayoutInflater.java:858）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:void android.view.LayoutInflater.rinflatechilren（org.xmlpull.v1.XmlPullParser，android.view.view，android.util.AttributeSet，boolean）（LayoutInflater.java:821）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:at-android.view.view-android.view.LayoutInflater.inflate（org.xmlpull.v1.XmlPullParser，android.view.ViewGroup，boolean）（LayoutInflater.java:518）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:at-android.view.view-android.view.LayoutInflater.inflate（int，android.view.ViewGroup，boolean）（LayoutInflater.java:426）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:at-android.view.view-android.view.LayoutInflater.inflate（int，android.view.ViewGroup）（LayoutInflater.java:377）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:在android.view.ViewGroup androidx.appcompat.app.appcompatidelegateimpl.createSubDecor（）（appcompatidelegateimpl.java:896）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:void androidx.appcompat.app.appcompatidelegateimpl.ensureubdecor（）（appcompatidelegateimpl.java:806）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:void androidx.appcompat.app.appcompatidelegateimpl.setContentView（int）（appcompatidelegateimpl.java:693）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:void androidx.appcompat.app.appcompativity.setContentView（int）（appcompativity.java:170）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:void com.doggoplayer.appperditempo.MainActivity.onCreate（android.os.Bundle）（MainActivity.java:15）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:void android.app.Activity.performCreate（android.os.Bundle）（Activity.java:6729）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:at void android.app.Instrumentation.callActivityOnCreate（android.app.Activity，android.os.Bundle）（Instrumentation.java:1119）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:at android.app.ActivityThread.performLaunchActivity（android.app.ActivityThread$ActivityClientRecord，android.content.Intent）（ActivityThread.java:2652）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:void android.app.ActivityThread.handleLaunchActivity（android.app.ActivityThread$ActivityClientRecord，android.content.Intent，java.lang.String）（ActivityThread.java:2766）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:void android.app.ActivityThread.-wrap12（android.app.ActivityThread，android.app.ActivityThread$ActivityClientRecord，android.content.Intent，java.lang.String）（ActivityThread.java:-1）
2020-11-26 10:11:15.796 5785-5785/com.doggoplayer.appperditempo I/art:void android.app.ActivityThread$H.handleMessage（android.os.Message）（ActivityTh
Intent intent = new Intent(this, ActivityName.class);
startActivity(intent);