在 Android Studio 中集成 ZXing

我将开始解释我已经完成的所有步骤，最后问题是什么。

  1. 下载 ZXing-2.2 https://code.google.com/p/zxing/downloads/list
  2. 额外的所有在 zxing-2.2。
  3. 下载并安装 Apache Ant http://www.youtube.com/watch?v=XJmndRfb1TU
  4. 使用 Windows Commandline (Run-> CMD)导航到提取的目录
  5. 在命令行窗口-Type‘ ant-f core/build.xml’中，按回车键，让 Apache 工作

此时此刻就像 将 ZXing 库直接集成到我的 Android 应用程序中

但是 Wooops，“ Buildfile: core Build.xml 不存在! Build 挂了。 6. < a href = “ https://stackoverflow. com/questions/16857294/import-ZXing-miss-core-build-xml”> Import ZXing-miss core/build.xml

现在是的，我拿到核心罐了。

  1. 打开 Android Studio，File-> Import Project-> Select/Android/in/zxing-2.2/-> Create Project from already Source-> Project name: andoid-> Source files for... 所有选中的下一步-> 库(不能做任何事情)下一步-> 模块(Android 选中)下一步-> SDK 1.7下一步-> Finish

使用 ProjectOpen-> Build-> Rebuild 项目

100个错误 19次警告

文件-> 项目结构-> 库-> 添加-> Java-> 选择我之前创建的 core.jar，并且 OK-> Library‘ core’将被添加到选定的模块中。(android) OK-> 和 OK 在项目结构对话框中。

建造-> 重建计划

15个错误 20次警告

所有错误都是错误: 需要常数表达式和 我看到 仿生机器人中 ZXing 项目切换案例的错误分析了 我把所有的开关都换了。

0错误 20次警告

好，现在继续:

文件-> New project-> zxing _ demo Next-> Next-> Blank Activity Next-> Finish

在新建项目-> 文件-> 导入模块-> 搜索并选择/android/OK-> 从现有源创建模块-> 下一步-> 下一步-> 下一步-> 完成

现在我可以在 Explorer/android//zging _ demoProject/和外部库中看到

现在我改变我的代码去扫描 QR

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.zxing_demo"
android:versionCode="1"
android:versionName="1.0" >


<uses-sdk
android:minSdkVersion="7"
android:targetSdkVersion="16" />
<uses-permission android:name="android.permission.CAMERA"/>
<uses-feature android:name="android.hardware.camera" />
<uses-feature
android:name="android.hardware.camera.autofocus"
android:required="false" />
<uses-feature
android:name="android.hardware.touchscreen"
android:required="false" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.zxing_demo.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />


<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:clearTaskOnLaunch="true"
android:stateNotNeeded="true"
android:configChanges="orientation|keyboardHidden"
android:name="com.google.zxing.client.android.CaptureActivity"
android:screenOrientation="landscape"
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>
</application>

MainActivity.java

package com.example.zxing_demo;


import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;


public class MainActivity extends Activity {


@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
intent.putExtra("SCAN_MODE", "QR_CODE_MODE");
startActivityForResult(intent, 0);
}




public void onActivityResult(int requestCode, int resultCode, Intent intent) {
if (requestCode == 0) {
if (resultCode == RESULT_OK) {
String contents = intent.getStringExtra("SCAN_RESULT");
String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
// Handle successful scan
} else if (resultCode == RESULT_CANCELED) {
// Handle cancel
}
}
}


}

现在测试，运行-> 调试

然后撞车。

日志猫

08-31 02:58:28.085  20665-20665/com.example.zxing_demo E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.zxing_demo/com.google.zxing.client.android.CaptureActivity}: java.lang.ClassNotFoundException: com.google.zxing.client.android.CaptureActivity
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1891)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1992)
at android.app.ActivityThread.access$600(ActivityThread.java:127)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1158)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4448)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:823)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:590)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: com.google.zxing.client.android.CaptureActivity
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1882)
... 11 more

我可以在 AndroidManifest.xml 中看到这一行

android:name="com.google.zxing.client.android.CaptureActivity"

红色的“ CaptureActivity”和错误说明: 无法解析符号‘ CaptureActivity’

文件-> 项目结构-> 模块-> zxing _ demo-> 依赖项-> 添加-> 模块依赖项-> android OK-> 应用和确定

现在捕获活动看起来不错

再次调试

08-31 03:06:58.513  21740-21740/com.example.zxing_demo E/AndroidRuntime: FATAL EXCEPTION: main
java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.zxing_demo/com.google.zxing.client.android.CaptureActivity}: java.lang.ClassNotFoundException: com.google.zxing.client.android.CaptureActivity
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1891)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1992)
at android.app.ActivityThread.access$600(ActivityThread.java:127)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1158)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4448)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:823)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:590)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassNotFoundException: com.google.zxing.client.android.CaptureActivity
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1882)
... 11 more

我想我会使用的应用程序和意图，但现在我想做这项工作，如果有人现在发生什么事请告诉我。

170939 次浏览
小开

this tutorial help me to integrate to android studio: http://wahidgazzah.olympe.in/integrating-zxing-in-your-android-app-as-standalone-scanner/ if down try THIS

just add to AndroidManifest.xml

<activity
android:name="com.google.zxing.client.android.CaptureActivity"
android:configChanges="orientation|keyboardHidden"
android:screenOrientation="landscape"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
android:windowSoftInputMode="stateAlwaysHidden" >
<intent-filter>
<action android:name="com.google.zxing.client.android.SCAN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>

Hope this help!.

小开
最佳答案

I was integrating ZXING into an Android application and there were no good sources for the input all over, I will give you a hint on what worked for me - because it turned out to be very easy.

There is a real handy git repository that provides the zxing android library project as an AAR archive.

All you have to do is add this to your build.gradle

repositories {
jcenter()
}


dependencies {
implementation 'com.journeyapps:zxing-android-embedded:3.0.2@aar'
implementation 'com.google.zxing:core:3.2.0'
}

and Gradle does all the magic to compile the code and makes it accessible in your app.

To start the Scanner afterwards, use this class/method: From the Activity:

new IntentIntegrator(this).initiateScan(); // `this` is the current Activity

From a Fragment:

IntentIntegrator.forFragment(this).initiateScan(); // `this` is the current Fragment
// If you're using the support library, use IntentIntegrator.forSupportFragment(this) instead.

There are several customizing options:

IntentIntegrator integrator = new IntentIntegrator(this);
integrator.setDesiredBarcodeFormats(IntentIntegrator.ONE_D_CODE_TYPES);
integrator.setPrompt("Scan a barcode");
integrator.setCameraId(0);  // Use a specific camera of the device
integrator.setBeepEnabled(false);
integrator.setBarcodeImageEnabled(true);
integrator.initiateScan();

They have a sample-project and are providing several integration examples:

If you already visited the link you going to see that I just copy&pasted the code from the git README. If not, go there to get some more insight and code examples.

小开 
buttion.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {


new com.google.zxing.integration.android.IntentIntegrator(Fragment.this).initiateScan();
}
});


public void onActivityResult(int requestCode, int resultCode, Intent data) {
IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
if(result != null) {
if(result.getContents() == null) {
Log.d("MainActivity", "Cancelled scan");
Toast.makeText(this, "Cancelled", Toast.LENGTH_LONG).show();
} else {
Log.d("MainActivity", "Scanned");
Toast.makeText(this, "Scanned: " + result.getContents(), Toast.LENGTH_LONG).show();
}
} else {
// This is important, otherwise the result will not be passed to the fragment
super.onActivityResult(requestCode, resultCode, data);
}
}






dependencies {
compile 'com.journeyapps:zxing-android-embedded:3.2.0@aar'
compile 'com.google.zxing:core:3.2.1'
compile 'com.android.support:appcompat-v7:23.1.0'
}
小开

Anybody facing the same issues, follow the simple steps:

Import the project android from downloaded zxing-master zip file using option Import project (Eclipse ADT, Gradle, etc.) and add the dollowing 2 lines of codes in your app level build.gradle file and and you are ready to run.

So simple, yahh...

dependencies {
// https://mvnrepository.com/artifact/com.google.zxing/core
compile group: 'com.google.zxing', name: 'core', version: '3.2.1'
// https://mvnrepository.com/artifact/com.google.zxing/android-core
compile group: 'com.google.zxing', name: 'android-core', version: '3.2.0'


}

You can always find latest version core and android core from below links:

https://mvnrepository.com/artifact/com.google.zxing/core/3.2.1 https://mvnrepository.com/artifact/com.google.zxing/android-core/3.2.0

UPDATE (29.05.2019)

Add these dependencies instead:

dependencies {
implementation 'com.google.zxing:core:3.4.0'
implementation 'com.google.zxing:android-core:3.3.0'
}
小开

From version 4.x, only Android SDK 24+ is supported by default, and androidx is required.

Add the following to your build.gradle file:

repositories {
jcenter()
}


dependencies {
implementation 'com.journeyapps:zxing-android-embedded:4.1.0'
implementation 'androidx.appcompat:appcompat:1.0.2'
}


android {
buildToolsVersion '28.0.3' // Older versions may give compile errors
}

Older SDK versions

For Android SDK versions < 24, you can downgrade zxing:core to 3.3.0 or earlier for Android 14+ support:

repositories {
jcenter()
}


dependencies {
implementation('com.journeyapps:zxing-android-embedded:4.1.0') { transitive = false }
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'com.google.zxing:core:3.3.0'
}


android {
buildToolsVersion '28.0.3'
}

You'll also need this in your Android manifest:

<uses-sdk tools:overrideLibrary="com.google.zxing.client.android" />

Source : https://github.com/journeyapps/zxing-android-embedded


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