android - API 23 上的 Zxing 错误:未找到处理意图行为的活动 =“com.google.zxing.client.SCAN”
问题描述
我在我的应用程序中使用 Zxing 来扫描二维码,但它只能在 API 26 或更高版本上运行。当我在 API 23 或 24 上运行它时,它会给出错误:没有找到处理意图的活动:“com.google.zxing.client.SCAN”。我的 minsdk 版本是 23,目标和编译版本是 28。
请帮助,如果可能的话,告诉我如何在较低的 api 设备上使用 zxing。
Android Mainfest
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.sync_remote_and_local_mysql_db_php">
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<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=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="com.google.zxing.client.android.SCAN"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
</application>
意图调用函数
public void HandlingClick(View arg0) {
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
startActivityForResult(intent, 0); //Barcode Scanner to scan for us
}
日志猫
06-16 12:07:31.517 18299-18299/? I/art: Late-enabling -Xcheck:jni
06-16 12:07:31.538 18299-18299/? D/TidaProvider: TidaProvider()
06-16 12:07:31.544 18299-18299/? W/ReflectionUtils: java.lang.NoSuchMethodException: android.os.MessageQueue#enableMonitor()#bestmatch
at miui.util.ReflectionUtils.findMethodBestMatch(ReflectionUtils.java:338)
at miui.util.ReflectionUtils.findMethodBestMatch(ReflectionUtils.java:375)
at miui.util.ReflectionUtils.callMethod(ReflectionUtils.java:800)
at miui.util.ReflectionUtils.tryCallMethod(ReflectionUtils.java:818)
at android.os.BaseLooper.enableMonitor(BaseLooper.java:47)
at android.os.Looper.prepareMainLooper(Looper.java:111)
at android.app.ActivityThread.main(ActivityThread.java:5587)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:774)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652)
06-16 12:07:31.575 18299-18299/com.example.barcode_online_scan W/System: ClassLoader referenced unknown path: /data/app/com.example.barcode_online_scan-2/lib/arm64
06-16 12:07:31.613 18299-18299/com.example.barcode_online_scan W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
06-16 12:07:31.629 18299-18299/com.example.barcode_online_scan D/AccessibilityManager: current package=com.example.barcode_online_scan, accessibility manager mIsFinalEnabled=false, mOptimizeEnabled=false, mIsUiAutomationEnabled=false, mIsInterestedPackage=false
06-16 12:07:31.636 18299-18299/com.example.barcode_online_scan V/BoostFramework: BoostFramework() : mPerf = com.qualcomm.qti.Performance@3454e9
06-16 12:07:31.636 18299-18299/com.example.barcode_online_scan V/BoostFramework: BoostFramework() : mPerf = com.qualcomm.qti.Performance@d5d556e
06-16 12:07:31.639 18299-18299/com.example.barcode_online_scan I/art: Rejecting re-init on previously-failed class java.lang.Class<android.support.v4.view.ViewCompat$OnUnhandledKeyEventListenerWrapper>
06-16 12:07:31.639 18299-18299/com.example.barcode_online_scan I/art: Rejecting re-init on previously-failed class java.lang.Class<android.support.v4.view.ViewCompat$OnUnhandledKeyEventListenerWrapper>
06-16 12:07:31.676 18299-18299/com.example.barcode_online_scan I/Timeline: Timeline: Activity_launch_request time:1406349
06-16 12:07:31.676 18299-18299/com.example.barcode_online_scan
D/AndroidRuntime: Shutting down VM
06-16 12:07:31.677 18299-18299/com.example.barcode_online_scan E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.barcode_online_scan, PID: 18299
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.barcode_online_scan/com.example.barcode_online_scan.MainActivity}: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.google.zxing.client.android.SCAN (has extras) }
at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2487)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2547)
at android.app.ActivityThread.access$1100(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1398)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5604)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:774)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652)
Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=com.google.zxing.client.android.SCAN (has extras) }
at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1805)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1514)
at android.app.Activity.startActivityForResult(Activity.java:4028)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:767)
at android.app.Activity.startActivityForResult(Activity.java:3989)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:754)
at com.example.barcode_online_scan.MainActivity.HandlingClick(MainActivity.java:79)
at com.example.barcode_online_scan.MainActivity.onCreate(MainActivity.java:57)
at android.app.Activity.performCreate(Activity.java:6358)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2440)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2547)
at android.app.ActivityThread.access$1100(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1398)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5604)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:774)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:652)
06-16 12:07:31.705 18299-18299/com.example.barcode_online_scan I/Process: Sending signal. PID: 18299 SIG: 9
摇篮(模块)
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.barcode_online_scan"
minSdkVersion 23
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner
"android.support.test.runner.AndroidJUnitRunner"
//add this line
useLibrary 'org.apache.http.legacy'
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-
optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation('com.journeyapps:zxing-android-embedded:3.6.0') { transitive = false }
}
Gradle(项目)
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.4.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
//add this dependency
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
解决方案
尝试在您的清单中明确添加所需的活动:
<activity android:name="com.google.zxing.client.android.CaptureActivity"
android:screenOrientation="landscape"
android:configChanges="orientation|keyboardHidden"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
android:windowSoftInputMode="stateAlwaysHidden">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
<intent-filter>
<action android:name="com.google.zxing.client.android.SCAN"/>
<category android:name="android.intent.category.DEFAULT"/>
</intent-filter>
</activity>
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