添加依赖库：
compile'com.google.zxing:core:3.2.1'
compile'cn.bingoogolapple:bga-qrcodecore:1.1.7@aar'
compile'cn.bingoogolapple:bga-zxing:1.1.7@aar'
添加ZXingUtils.java类：
/**
* 生成条形码和二维码的工具
*/
public class ZXingUtils {
/**
* 生成二维码 要转换的地址或字符串,可以是中文
*
* @param url
* @param width
* @param height
* @return
*/
public static BitmapcreateQRImage(String url, final int width, final int height) {
try {
// 判断URL合法性
if (url ==null ||"".equals(url) || url.length() <1) {
return null;
}
Hashtable hints =new Hashtable();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
// 图像数据转换，使用了矩阵转换
BitMatrix bitMatrix =new QRCodeWriter().encode(url,
BarcodeFormat.QR_CODE, width, height, hints);
int[] pixels =new int[width * height];
// 下面这里按照二维码的算法，逐个生成二维码的图片，
// 两个for循环是图片横列扫描的结果
for (int y =0; y < height; y++) {
for (int x =0; x < width; x++) {
if (bitMatrix.get(x, y)) {
pixels[y * width + x] =0xff000000;
}else {
pixels[y * width + x] =0xffffffff;
}
}
}
// 生成二维码图片的格式，使用ARGB_8888
Bitmap bitmap = Bitmap.createBitmap(width, height,
Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
}catch (WriterException e) {
e.printStackTrace();
}
return null;
}
/**
* 生成条形码
*
* @param context
* @param contents
* 需要生成的内容
* @param desiredWidth
* 生成条形码的宽带
* @param desiredHeight
* 生成条形码的高度
* @param displayCode
* 是否在条形码下方显示内容
* @return
*/
public static BitmapcreatBarcode(Context context, String contents,
int desiredWidth, int desiredHeight, boolean displayCode) {
Bitmap ruseltBitmap =null;
/**
* 图片两端所保留的空白的宽度
*/
int marginW =20;
/**
* 条形码的编码类型
*/
BarcodeFormat barcodeFormat = BarcodeFormat.CODE_128;
if (displayCode) {
Bitmap barcodeBitmap =encodeAsBitmap(contents, barcodeFormat,
desiredWidth, desiredHeight);
Bitmap codeBitmap =creatCodeBitmap(contents, desiredWidth +2
* marginW, desiredHeight, context);
ruseltBitmap =mixtureBitmap(barcodeBitmap, codeBitmap, new PointF(
0, desiredHeight));
}else {
ruseltBitmap =encodeAsBitmap(contents, barcodeFormat,
desiredWidth, desiredHeight);
}
return ruseltBitmap;
}
/**
* 生成条形码的Bitmap
*
* @param contents
* 需要生成的内容
* @param format
* 编码格式
* @param desiredWidth
* @param desiredHeight
* @return
* @throws WriterException
*/
protected static BitmapencodeAsBitmap(String contents,
BarcodeFormat format, int desiredWidth, int desiredHeight) {
final int WHITE =0xFFFFFFFF;
final int BLACK =0xFF000000;
MultiFormatWriter writer =new MultiFormatWriter();
BitMatrix result =null;
try {
result = writer.encode(contents, format, desiredWidth,
desiredHeight, null);
}catch (WriterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int width = result.getWidth();
int height = result.getHeight();
int[] pixels =new int[width * height];
// All are 0, or black, by default
for (int y =0; y < height; y++) {
int offset = y * width;
for (int x =0; x < width; x++) {
pixels[offset + x] = result.get(x, y) ? BLACK : WHITE;
}
}
Bitmap bitmap = Bitmap.createBitmap(width, height,
Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
return bitmap;
}
/**
* 生成显示编码的Bitmap
*
* @param contents
* @param width
* @param height
* @param context
* @return
*/
protected static BitmapcreatCodeBitmap(String contents, int width,
int height, Context context) {
TextView tv =new TextView(context);
ViewGroup.LayoutParams layoutParams =new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
tv.setLayoutParams(layoutParams);
tv.setText(contents);
tv.setHeight(height);
tv.setGravity(Gravity.CENTER_HORIZONTAL);
tv.setWidth(width);
tv.setDrawingCacheEnabled(true);
tv.setTextColor(Color.BLACK);
tv.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
tv.layout(0, 0, tv.getMeasuredWidth(), tv.getMeasuredHeight());
tv.buildDrawingCache();
Bitmap bitmapCode = tv.getDrawingCache();
return bitmapCode;
}
/**
* 将两个Bitmap合并成一个
*
* @param first
* @param second
* @param fromPoint
* 第二个Bitmap开始绘制的起始位置（相对于第一个Bitmap）
* @return
*/
protected static BitmapmixtureBitmap(Bitmap first, Bitmap second,
PointF fromPoint) {
if (first ==null || second ==null || fromPoint ==null) {
return null;
}
int marginW =20;
Bitmap newBitmap = Bitmap.createBitmap(
first.getWidth() + second.getWidth() + marginW,
first.getHeight() + second.getHeight(), Bitmap.Config.ARGB_4444);
Canvas cv =new Canvas(newBitmap);
cv.drawBitmap(first, marginW, 0, null);
cv.drawBitmap(second, fromPoint.x, fromPoint.y, null);
cv.save();
cv.restore();
return newBitmap;
}
}
生成二维码代码和效果：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = findViewById(R.id.imageview);
bitmap = ZXingUtils.createQRImage("你好", 600, 600);
//bitmap= ZXingUtils.creatBarcode(this,"8556616316",200,50,true);
imageView.setImageBitmap(bitmap);
}
生成条形码代码和效果：
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
imageView = findViewById(R.id.imageview);
//bitmap = ZXingUtils.createQRImage("你好", 600, 600);
bitmap= ZXingUtils.creatBarcode(this,"8556616316",200,50,true);
imageView.setImageBitmap(bitmap);
}