用于打开另一个屏幕的按钮，该屏幕在Android Studio中不起作用

Question

package com.example.lumeaanimalelor;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import androidx.appcompat.app.AppCompatActivity;

public class Iepure4 extends AppCompatActivity {
    Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_iepure4);

        button = (Button) findViewById(R.id.button12);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                openIepure5();
            }
        });


    }

    public void openIepure5() {
        Intent intent = new Intent(this, Iepure5.class);
        startActivity(intent);
    }
}

清单：

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

    <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/AppTheme">
        <activity android:name=".LevelsActivity"></activity>
        <activity android:name=".Level1Menu"></activity>
        <activity android:name=".Iepure1"></activity>
        <activity android:name=".Iepure2"></activity>
        <activity android:name=".Iepure3"></activity>
        <activity android:name=".Iepure4"></activity>
        <activity android:name=".Iepure5"></activity>
        <activity android:name=".SettingsActivity" />
        <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>

活动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:id="@+id/linearLayout6"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <ImageView
        android:id="@+id/imageView5"
        android:layout_width="255dp"
        android:layout_height="170dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.224"
        app:srcCompat="@drawable/iepure4" />

    <TextView
        android:id="@+id/textView12"
        android:layout_width="255dp"
        android:layout_height="wrap_content"
        android:text="Dacă te-ai hotărât să crești un iepure, e bine de știut că în ciuda faptului că Bugs Bunny mănâncă mereu morcovi, rădăcina morcovului (partea portocalie) nu trebuie consumată foarte des de către iepure pentru că are foarte multe zaharuri."
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.691" />

    <Button
        android:id="@+id/button12"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Mai departe ->"
        android:onClick="openIepure5"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.723"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.884" />
</androidx.constraintlayout.widget.ConstraintLayout>

运行：

D / ViewRootImpl @ ed1b06e [Iepure4]：ViewPostIme指针0D / ViewRootImpl @ ed1b06e [Iepure4]：ViewPostIme指针1W / ActivityThread：handleWindowVisibility：令牌没有活动android.os.BinderProxy@e300ac8 I / DecorView：createDecorCaptionView >>DecorView @ 1ed689d​​ []，isFloating：false，isApplication：true，hasWindowDecorCaption：false，hasWindowControllerCallback：trueD / ViewRootImpl @ ed1b06e [Iepure4]：MSG_WINDOW_FOCUS_CHANGED 0 1D / InputMethodManager：prepareNavigationBarInfo（）DecorView @ 776eb7d [Iepure4]getNavigationBarColor（）-855310 D / ViewRootImpl @ ed1b06e [Iepure4]：setWindowStopped（false）old = false D / ViewRootImpl @ ed1b06e [Iepure4]：MSG_WINDOW_FOCUS_CHANGED 1 1 D / InputMethodManager：prepareNavigationBarInfo（）DecorView @ 776eb7d [Iepure4]getNavigationBarColor（）-855310

Answer 1

您能否提供有关您面临的错误或异常的更多信息？

并且您还可以检查是否定位活动内容视图和扩展属性活动类吗？