ZXing(Zebra Crossing)使用手機內建相機讀取1D/2D barcode以進行解碼/編碼的open-source, 使用ZXing必須準備以下檔案, ZXing-2.1.zip包含兩個Andriod專案, CaptureActivity及ZXingTestActivity, 我們只需要CaptureActivity, 而兩者都需匯入core-2.1.jar及android-integration-2.1-honeycomb.jar, 若CaptureActivity在手機上無法正常執行, 可Skip STP1-3, 直接安裝BarcodeScanner4.31.apk在手機上, 再建立一個Andriod專案(ZXing)調用CaptureActivity即可
ZXing(Zebra Crossing)使用手機內建相機讀取1D/2D barcode以進行解碼/編碼的open-source, 使用ZXing必須準備以下檔案, ZXing-2.1.zip包含兩個Andriod專案, CaptureActivity及ZXingTestActivity, 我們只需要CaptureActivity, 而兩者都需匯入core-2.1.jar及android-integration-2.1-honeycomb.jar, 若CaptureActivity在手機上無法正常執行, 可Skip STP1-3, 直接安裝BarcodeScanner4.31.apk在手機上, 再建立一個Andriod專案(ZXing)調用CaptureActivity即可
core-2.1.jar
android-integration-2.1-honeycomb.jar
ZXing-2.1.zip
BarcodeScanner4.31.apk(required)
STP1. Unzip ZXing-2.1.zip, File>Import>Android>ExistingAndroidCodeIntoWorkspace, 專案匯入後會出現許多import錯誤, 是因為兩個jar尚未匯入
STP2. Eclipse, Project>Proerties>JavaBuildPath>Libraries>AddExternalJAR..>OK
STP3. Run CaptureActivity(Barcode Scanner)在手機上, 要多run幾次才會成功, 若還是不行, Skip STP1-3, 直接安裝BarcodeScanner4.31.apk在手機上
STP4. 建立一個Andriod專案(ZXing)調用CaptureActivity, res/layout/activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<Button
android:id="@+id/btScan"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:onClick="onClick"
android:text="ScanSN" />
</RelativeLayout>
STP5. src/../MainActivity.java, onClick時呼叫com.google.zxing.client.android.SCAN, 並Override com.google.zxing.client.android.CaptureActivity.onActivityResult
package com.example.zxing;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends Activity {
private static final int ZXING_SCAN = 3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void onClick(View v) {
switch(v.getId()){
case R.id.btScan:
Intent intent = new Intent("com.google.zxing.client.android.SCAN");
startActivityForResult(intent, ZXING_SCAN);
break;
}
}
public void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
if(requestCode == ZXING_SCAN){
if (resultCode == RESULT_OK) {
String contents = intent.getStringExtra("SCAN_RESULT");
String format = intent.getStringExtra("SCAN_RESULT_FORMAT");
Toast.makeText(this, "contents: "+contents+" format: "+format, Toast.LENGTH_SHORT).show();
}else{
Toast.makeText(this, "RESULT_NOT_OK", Toast.LENGTH_SHORT).show();
}
}else{
Toast.makeText(this, "ZXING_SCAN<>3", Toast.LENGTH_SHORT).show();
}
}
}
STP6. AndroidManifest.xml, 加入android.permission.CAMERA, 及com.google.zxing.client.android.CaptureActivity
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.zxing"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.CAMERA"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.zxing.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: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="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>
</manifest>
相關檔案如下