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默认的 android 工作室程序在我运行时不起作用

[英]the default android studio program doesn't work when i run it

 原文  2021-03-21 13:41:07  9   1    java/ android/ android-studio

问题描述

I try to run an empty app (the deafult one with hello world) and I get errors when I try to run the app.我尝试运行一个空应用程序（带有 hello world 的默认应用程序），当我尝试运行该应用程序时出现错误。

The steps I performed are:我执行的步骤是：

  • Created the empty project:创建了空项目：
  • Opened the Nexus S API P emulator.打开 Nexus S API P 模拟器。
  • pressed the run button按下运行按钮
  • waited for the app to start by itself (it opened and closed immediately)等待应用程序自行启动（它立即打开和关闭）
  • reopened the application from the menu with the title从带有标题的菜单中重新打开应用程序

"MyCollege keeps stopping" "App info" "Close app" “MyCollege 不断停止”“应用信息”“关闭应用”

do you have any idea how to fix this?你知道如何解决这个问题吗？

this is my AndroidManifest.xml这是我的 AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.mycollege">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.MyCollege">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

This is my activity_main.xml这是我的activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Hello World!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

This is my MainActivity.java:这是我的 MainActivity.java：

package com.example.mycollege;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;

public class MainActivity extends AppCompatActivity {

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

This is my error in run:这是我在运行中的错误：

03/21 14:17:28: Launching 'app' on Nexus S API P.
App restart successful without requiring a re-install.
$ adb shell am start -n "com.example.mycollege/com.example.mycollege.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Connected to process 16194 on device 'Nexus_S_API_P [emulator-5554]'.
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
I/ample.mycolleg: The ClassLoaderContext is a special shared library.
W/ample.mycolleg: Accessing hidden field Landroid/view/WindowInsets;->CONSUMED:Landroid/view/WindowInsets; (blacklist, reflection)
I/WindowInsetsCompat: Could not retrieve WindowInsets.CONSUMED field
    java.lang.NoSuchFieldException: No field CONSUMED in class Landroid/view/WindowInsets; (declaration of 'android.view.WindowInsets' appears in /system/framework/framework.jar!classes2.dex)
        at java.lang.Class.getDeclaredField(Native Method)
        at androidx.core.view.WindowInsetsCompat$BuilderImpl20.createWindowInsetsInstance(WindowInsetsCompat.java:1071)
        at androidx.core.view.WindowInsetsCompat$BuilderImpl20.<init>(WindowInsetsCompat.java:1040)
        at androidx.core.view.WindowInsetsCompat$Builder.<init>(WindowInsetsCompat.java:860)
        at androidx.core.view.WindowInsetsCompat.<clinit>(WindowInsetsCompat.java:55)
        at androidx.appcompat.widget.ActionBarOverlayLayout.<init>(ActionBarOverlayLayout.java:101)
        at java.lang.reflect.Constructor.newInstance0(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
        at android.view.LayoutInflater.createView(LayoutInflater.java:647)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
        at androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor(AppCompatDelegateImpl.java:896)
        at androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor(AppCompatDelegateImpl.java:806)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:693)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:170)
        at com.example.mycollege.MainActivity.onCreate(MainActivity.java:12)
        at android.app.Activity.performCreate(Activity.java:7130)
        at android.app.Activity.performCreate(Activity.java:7121)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1262)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2905)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3060)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:110)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1800)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6649)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826)
W/ample.mycolleg: Accessing hidden method Landroid/view/WindowInsets;-><init>(Landroid/graphics/Rect;)V (blacklist, reflection)
I/WindowInsetsCompat: Could not retrieve WindowInsets(Rect) constructor
    java.lang.NoSuchMethodException: <init> [class android.graphics.Rect]
        at java.lang.Class.getConstructor0(Class.java:2327)
        at java.lang.Class.getConstructor(Class.java:1725)
        at androidx.core.view.WindowInsetsCompat$BuilderImpl20.createWindowInsetsInstance(WindowInsetsCompat.java:1092)
        at androidx.core.view.WindowInsetsCompat$BuilderImpl20.<init>(WindowInsetsCompat.java:1040)
        at androidx.core.view.WindowInsetsCompat$Builder.<init>(WindowInsetsCompat.java:860)
        at androidx.core.view.WindowInsetsCompat.<clinit>(WindowInsetsCompat.java:55)
        at androidx.appcompat.widget.ActionBarOverlayLayout.<init>(ActionBarOverlayLayout.java:101)
        at java.lang.reflect.Constructor.newInstance0(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
        at android.view.LayoutInflater.createView(LayoutInflater.java:647)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
        at androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor(AppCompatDelegateImpl.java:896)
        at androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor(AppCompatDelegateImpl.java:806)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:693)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:170)
        at com.example.mycollege.MainActivity.onCreate(MainActivity.java:12)
        at android.app.Activity.performCreate(Activity.java:7130)
        at android.app.Activity.performCreate(Activity.java:7121)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1262)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2905)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3060)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:110)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1800)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6649)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826)
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.mycollege, PID: 16194
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.mycollege/com.example.mycollege.MainActivity}: android.view.InflateException: Binary XML file line #17: Binary XML file line #17: Error inflating class androidx.appcompat.widget.ActionBarOverlayLayout
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2925)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3060)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:110)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1800)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6649)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826)
     Caused by: android.view.InflateException: Binary XML file line #17: Binary XML file line #17: Error inflating class androidx.appcompat.widget.ActionBarOverlayLayout
     Caused by: android.view.InflateException: Binary XML file line #17: Error inflating class androidx.appcompat.widget.ActionBarOverlayLayout
     Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Constructor.newInstance0(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:343)
        at android.view.LayoutInflater.createView(LayoutInflater.java:647)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
        at androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor(AppCompatDelegateImpl.java:896)
        at androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor(AppCompatDelegateImpl.java:806)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:693)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:170)
        at com.example.mycollege.MainActivity.onCreate(MainActivity.java:12)
        at android.app.Activity.performCreate(Activity.java:7130)
        at android.app.Activity.performCreate(Activity.java:7121)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1262)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2905)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3060)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:110)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1800)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:164)
        at android.app.ActivityThread.main(ActivityThread.java:6649)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826)
     Caused by: java.lang.ExceptionInInitializerError
        at androidx.appcompat.widget.ActionBarOverlayLayout.<init>(ActionBarOverlayLayout.java:101)
        at java.lang.reflect.Constructor.newInstance0(Native Method) 
        at java.lang.reflect.Constructor.newInstance(Constructor.java:343) 
        at android.view.LayoutInflater.createView(LayoutInflater.java:647) 
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:790) 
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:492) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:423) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:374) 
        at androidx.appcompat.app.AppCompatDelegateImpl.createSubDecor(AppCompatDelegateImpl.java:896) 
        at androidx.appcompat.app.AppCompatDelegateImpl.ensureSubDecor(AppCompatDelegateImpl.java:806) 
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:693) 
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:170) 
        at com.example.mycollege.MainActivity.onCreate(MainActivity.java:12) 
        at android.app.Activity.performCreate(Activity.java:7130) 
        at android.app.Activity.performCreate(Activity.java:7121) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1262) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2905) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3060) 
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:110) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:70) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1800) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:164) 
        at android.app.ActivityThread.main(ActivityThread.java:6649) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:826) 
     Caused by: java.lang.NullPointerException
        at androidx.core.util.Preconditions.checkNotNull(Preconditions.java:64)
        at androidx.core.view.WindowInsetsCompat.toWindowInsetsCompat(WindowInsetsCompat.java:113)
        at androidx.core.view.WindowInsetsCompat$BuilderImpl20.build(WindowInsetsCompat.java:1058)
        at androidx.core.view.WindowInsetsCompat$Builder.build(WindowInsetsCompat.java:996)
        at androidx.core.view.WindowInsetsCompat.<clinit>(WindowInsetsCompat.java:56)
            ... 29 more

I used Android Studio 4.1.3 with an "Empty Activity" template我使用带有“空活动”模板的 Android Studio 4.1.3

1 个解决方案

解决方案1
 0  2021-03-21 13:51:18

So this is happening because of any logical error in your code which is related to androidx.appcompat.widget.ActionBarOverlayLayout所以发生这种情况是因为您的代码中有任何与 androidx.appcompat.widget.ActionBarOverlayLayout 相关的逻辑错误

Here's something you can do这是您可以做的事情

  1. check what's at line 17 in activity_main.xml, try removing that component or that particular line and see if it works.检查 activity_main.xml 中第 17 行的内容，尝试删除该组件或该特定行，看看它是否有效。
  2. make sure your app's theme inheriting from Theme.AppCompat.确保您的应用的主题继承自 Theme.AppCompat。

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