android studio成功构建但未运行

luaexgnf  于 2021-07-07  发布在  Java
关注(0)|答案(3)|浏览(373)

我刚刚创建了我的第一个android应用程序，复制了以下视频中的代码：https://www.youtube.com/watch?v=gty13iotddg&t=594s
应用程序构建没有问题，但当我尝试运行它时，它突然关闭。

这是调试器的消息：

12/02 12:19:56: Launching 'app' on Pixel_3a_API_30_x86.
Install successfully finished in 519 ms.
$ adb shell am start -n "com.example.pokedex/com.example.pokedex.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER -D
Waiting for application to come online: com.example.pokedex | com.example.pokedex.test
Waiting for application to come online: com.example.pokedex | com.example.pokedex.test
Connecting to com.example.pokedex
Capturing and displaying logcat messages from application. This behavior can be disabled in the "Logcat output" section of the "Debugger" settings page.
W/ActivityThread: Application com.example.pokedex is waiting for the debugger on port 8100...
I/System.out: Sending WAIT chunk
I/System.out: Debugger has connected
I/System.out: waiting for debugger to settle...
I/System.out: waiting for debugger to settle...
Connected to the target VM, address: 'localhost:52033', transport: 'socket'
I/System.out: waiting for debugger to settle...
I/System.out: waiting for debugger to settle...
I/System.out: waiting for debugger to settle...
I/System.out: waiting for debugger to settle...
I/chatty: uid=10153(com.example.pokedex) identical 2 lines
I/System.out: waiting for debugger to settle...
I/System.out: debugger has settled (1475)
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
D/NetworkSecurityConfig: No Network Security Config specified, using platform default
D/libEGL: loaded /vendor/lib/egl/libEGL_emulation.so
D/libEGL: loaded /vendor/lib/egl/libGLESv1_CM_emulation.so
D/libEGL: loaded /vendor/lib/egl/libGLESv2_emulation.so
W/example.pokede: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (greylist, reflection, allowed)
W/example.pokede: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (greylist, reflection, allowed)
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.pokedex, PID: 8349
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.pokedex/com.example.pokedex.MainActivity}: android.view.InflateException: Binary XML file line #2 in com.example.pokedex:layout/activity_main: Binary XML file line #2 in com.example.pokedex:layout/activity_main: Error inflating class android.support.constraint.ConstraintLayout
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3449)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:223)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
     Caused by: android.view.InflateException: Binary XML file line #2 in com.example.pokedex:layout/activity_main: Binary XML file line #2 in com.example.pokedex:layout/activity_main: Error inflating class android.support.constraint.ConstraintLayout
     Caused by: android.view.InflateException: Binary XML file line #2 in com.example.pokedex:layout/activity_main: Error inflating class android.support.constraint.ConstraintLayout
     Caused by: java.lang.ClassNotFoundException: android.support.constraint.ConstraintLayout
        at java.lang.Class.classForName(Native Method)
        at java.lang.Class.forName(Class.java:454)
        at android.view.LayoutInflater.createView(LayoutInflater.java:813)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:1004)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:959)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:657)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:532)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:479)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
        at com.example.pokedex.MainActivity.onCreate(MainActivity.java:19)
        at android.app.Activity.performCreate(Activity.java:8000)
        at android.app.Activity.performCreate(Activity.java:7984)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1309)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3422)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3601)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:85)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2066)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:223)
        at android.app.ActivityThread.main(ActivityThread.java:7656)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:947)
E/AndroidRuntime: Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.constraint.ConstraintLayout" on path: DexPathList[[zip file "/data/app/~~ikbXqJo2xtaJUvZzC7gM8Q==/com.example.pokedex-kRHbfAkGOaaI21CGLAjxuQ==/base.apk"],nativeLibraryDirectories=[/data/app/~~ikbXqJo2xtaJUvZzC7gM8Q==/com.example.pokedex-kRHbfAkGOaaI21CGLAjxuQ==/lib/x86, /system/lib, /system_ext/lib]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:207)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:379)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
            ... 26 more
I/Process: Sending signal. PID: 8349 SIG: 9
Disconnected from the target VM, address: 'localhost:52033', transport: 'socket'

这是我的主要活动：

package com.example.pokedex;

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;

import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

public class MainActivity extends AppCompatActivity {

    private RecyclerView recyclerView;
    private RecyclerView.Adapter adapter;
    private RecyclerView.LayoutManager layoutManager;

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

        recyclerView=findViewById(R.id.recycler_view);
        adapter=new PokedexAdapter();
        layoutManager=new LinearLayoutManager(this);

        recyclerView.setAdapter(adapter);
        recyclerView.setLayoutManager(layoutManager);

    }
}

活动main.xml：

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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">

    <androidx.recyclerview.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/recycler_view"/>

</android.support.constraint.ConstraintLayout>

pokedex\u世界其他地区：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/pokedex_row">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/pokedex_row_text_view"/>

</LinearLayout>

android清单.xml：

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

    <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.Pokedex">
        <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>

我已经试着解决这个问题好几天了，所以如果有人能帮我，我会非常感激的！

Javaandroidandroid-studiodebuggingcs50

3条答案

按热度按时间
bejyjqdl

bejyjqdl1#

我觉得constraintlayout有问题，你能分享你的xml文件吗，这样我可以帮你打。

赞(0）分享  回复(0）举报  2021-07-07
xzv2uavs

xzv2uavs2#

您是否尝试过将constraintlayout更改为使用androidx而不是support
尝试将activity\u main.xml的开始标记更改为：
<androidx.constraintlayout.widget.constraintlayoutxmlns:android="http://schemas.android.com/apk/res/android"
以及相应的结束标记
</androidx.constraintlayout.widget.constraintlayout>
然后在连接到internet时同步项目。

赞(0）分享  回复(0）举报  2021-07-07
kwvwclae

kwvwclae3#

我时常遇到这种错误，并通过执行以下操作来解决：
首先，检查是否有 ConstraintLayout 在您的
app Gradle 配置
然后确保布局中没有错误（可能是语义错误） XML file 如果错误仍然存在，请考虑将这两个文件添加到问题描述中，以便其中一个可以轻松地提供帮助
祝你好运！

赞(0）分享  回复(0）举报  2021-07-07
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