Android studio 实现生成二维码和扫描二维码

效果图

build.gradle(:app)添加依赖

dependencies {
   
    implementation 'com.google.zxing:core:3.3.3'
    implementation 'com.journeyapps:zxing-android-embedded:3.6.0'
    implementation 'com.google.zxing:javase:3.0.0'
}

Manifests.xml

	<uses-permission android:name="android.permission.CAMERA" />
    <uses-feature android:name="android.hardware.camera" />
    <uses-feature android:name="android.hardware.camera.autofocus" />

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:orientation="vertical"
    >

    <ImageView
        android:id="@+id/qr_code_image"
        android:layout_width="200dp"
        android:layout_height="200dp" />
    <EditText
        android:id="@+id/creat_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:hint="请输入想要生成二维码的文字"
        android:layout_marginTop="20dp"
        android:textSize="20dp"/>
    <Button
        android:id="@+id/creat_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="生成二维码"
        android:layout_marginTop="20dp"/>
    <Button
        android:id="@+id/scan_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="扫描二维码"
        android:layou