Android中生成条形码和二维码

时间:2022-11-16 23:21:06

准备目前Google的zxing jar包不支持中文码的生成,所以本示例中也不支持中文。需要中文支持的朋友,请自行修改zxing.jar包再编译下。 废话不说,直接上效果图:

Android中生成条形码和二维码

Android中生成条形码和二维码

 

具体示例代码如下:

?
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179 packagecom.test.createcode; importandroid.app.Activity;importandroid.graphics.Bitmap;importandroid.os.Bundle;importandroid.view.View;importandroid.view.View.OnClickListener;importandroid.widget.Button;importandroid.widget.EditText;importandroid.widget.ImageView;importandroid.widget.Toast; importcom.google.zxing.BarcodeFormat;importcom.google.zxing.MultiFormatWriter;importcom.google.zxing.WriterException;importcom.google.zxing.common.BitMatrix; /** * 用于创建和扫描二维码 */publicclassCreateCodeActivity extendsActivity {         /**     * 将要生成二维码的内容     */    privateEditText codeEdit;     /**     * 生成二维码代码     */    privateButton twoCodeBtn;    /**     * 用于展示生成二维码的imageView     */    privateImageView codeImg;        /**     * 生成一维码按钮     */    privateButton oneCodeBtn;     /**     * 界面的初始化事件     *     * @param savedInstanceState Bundle对象     */    @Override    publicvoidonCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        initView();        setListener();     }     /**     * 用于初始化界面展示的view     */    privatevoidinitView() {        codeEdit = (EditText) findViewById(R.id.code_edittext);        twoCodeBtn = (Button) findViewById(R.id.code_btn);        oneCodeBtn = (Button) findViewById(R.id.btn_code);        codeImg = (ImageView) findViewById(R.id.code_img);    }     /**     * 设置生成二维码和扫描二维码的事件     */    privatevoidsetListener() {        twoCodeBtn.setOnClickListener(newOnClickListener() {             @Override            publicvoidonClick(View v) {                String str = codeEdit.getText().toString().trim();                Bitmap bmp = null;                try{                    if(str != null&& !"".equals(str)) {                        bmp = CreateTwoDCode(str);                    }                catch(WriterException e) {                    e.printStackTrace();                }                if(bmp != null) {                    codeImg.setImageBitmap(bmp);                }             }        });          oneCodeBtn.setOnClickListener(newOnClickListener() {            @Override            publicvoidonClick(View view) {                String str = codeEdit.getText().toString().trim();                intsize = str.length();                for(inti = 0; i < size; i++) {                    intc = str.charAt(i);                    if((19968<= c && c < 40623)) {                        Toast.makeText(CreateCodeActivity.this"生成条形码的时刻不能是中文", Toast.LENGTH_SHORT).show();                        return;                    }                 }                Bitmap bmp = null;                try{                    if(str != null&& !"".equals(str)) {                        bmp = CreateOneDCode(str);                    }                catch(WriterException e) {                    e.printStackTrace();                }                if(bmp != null) {                    codeImg.setImageBitmap(bmp);                }            }        });    }     /**     * 将指定的内容生成成二维码     *     * @param content 将要生成二维码的内容     * @return 返回生成好的二维码事件     * @throws WriterException WriterException异常     */    publicBitmap CreateTwoDCode(String content) throwsWriterException {        // 生成二维矩阵,编码时指定大小,不要生成了图片以后再进行缩放,这样会模糊导致识别失败        BitMatrix matrix = newMultiFormatWriter().encode(content,                BarcodeFormat.QR_CODE, 300300);        intwidth = matrix.getWidth();        intheight = matrix.getHeight();        // 二维矩阵转为一维像素数组,也就是一直横着排了        int[] pixels = newint[width * height];        for(inty = 0; y < height; y++) {            for(intx = 0; x < width; x++) {                if(matrix.get(x, y)) {                    pixels[y * width + x] = 0xff000000;                }            }        }         Bitmap bitmap = Bitmap.createBitmap(width, height,                Bitmap.Config.ARGB_8888);        // 通过像素数组生成bitmap,具体参考api        bitmap.setPixels(pixels, 0, width, 00, width, height);        returnbitmap;    }     /**     * 用于将给定的内容生成成一维码 注:目前生成内容为中文的话将直接报错,要修改底层jar包的内容     *     * @param content 将要生成一维码的内容     * @return 返回生成好的一维码bitmap     * @throws WriterException WriterException异常     */    publicBitmap CreateOneDCode(String content) throwsWriterException {        // 生成一维条码,编码时指定大小,不要生成了图片以后再进行缩放,这样会模糊导致识别失败        BitMatrix matrix = newMultiFormatWriter().encode(content,                BarcodeFormat.CODE_128, 500200);        intwidth = matrix.getWidth();        intheight = matrix.getHeight();        int[] pixels = newint[width * height];        for(inty = 0; y < height; y++) {            for(intx = 0; x < width; x++) {                if(matrix.get(x, y)) {                    pixels[y * width + x] = 0xff000000;                }            }        }         Bitmap bitmap = Bitmap.createBitmap(width, height,                Bitmap.Config.ARGB_8888);        // 通过像素数组生成bitmap,具体参考api        bitmap.setPixels(pixels, 0, width, 00, width, height);        returnbitmap;    } }
main.xml文件如下: ?
1234567891011121314151617181920 <?xmlversion="1.0"encoding="utf-8"?> <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"               android:orientation="vertical"android:layout_width="fill_parent"               android:layout_height="fill_parent"android:background="#ff999999"    <EditTextandroid:layout_width="fill_parent"android:id="@+id/code_edittext"               android:layout_height="wrap_content"android:text=""/>     <LinearLayoutandroid:layout_width="wrap_content"                   android:layout_height="wrap_content"android:orientation="horizontal"                   android:layout_marginTop="20dip"android:layout_gravity="center_horizontal"        <Buttonandroid:id="@+id/code_btn"android:layout_width="100dip"                 android:layout_height="40dip"android:text="生成二维码"/>         <Buttonandroid:id="@+id/btn_code"android:layout_width="100dip"android:layout_height="40dip"                 android:text="生成一维码"></Button    </LinearLayout              <ImageViewandroid:layout_width="wrap_content"android:id="@+id/code_img"                android:layout_height="wrap_content"android:layout_marginTop="20dip"                android:layout_gravity="center_horizontal"/> </LinearLayout>
清单文件如下: ?
1234567891011121314151617181920212223 <?xmlversion="1.0"encoding="utf-8"?> <manifestxmlns:android="http://schemas.android.com/apk/res/android"     package="com.test.createcode"     android:versionCode="1"     android:versionName="1.0"       <uses-sdkandroid:minSdkVersion="10"/>        <application         android:icon="@drawable/ic_launcher"         android:label="@string/app_name"        <activity             android:name=".CreateCodeActivity"             android:label="@string/app_name"            <intent-filter                <actionandroid:name="android.intent.action.MAIN"/>                    <categoryandroid:name="android.intent.category.LAUNCHER"/>             </intent-filter        </activity    </application   </manifest>

最后不要下载个zxing.jar放在libs文件夹中,即可。(上述的BitMatrix及BarcodeFormat等类是依赖于zxing.jar的。)


下载地址:

http://code.google.com/p/zxing/

来自:http://blog.csdn.net/chenshufei2/article/details/8682934

不明白的朋友下载我的例子:

http://download.csdn.net/detail/zhaihaohao1/8387031

我的相关文章:

http://blog.csdn.net/zhaihaohao1/article/details/42920591