生成二维码
2016-08-22 08:33
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public class CodeActivity extends Activity implements OnClickListener {
private ImageView qr_code_image;
private ImageView image_back_about;
private final static int SCANNIN_GREQUEST_CODE = 1;
private static final int QR_WIDTH = 200;
private static final int QR_HEIGHT = 200;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_code);
// 初始化控件
initview();
//生成二维码
createQRCodeImage();
}
/**
* 初始化控件
*/
private void initview() {
// 生成二维码的图片
qr_code_image = (ImageView) findViewById(R.id.qr_code_image);
image_back_about = (ImageView) findViewById(R.id.image_back_about);
image_back_about.setOnClickListener(this);
}
protected void createQRCodeImage() {
// TODO Auto-generated method stub
QRCodeWriter writer = new QRCodeWriter();
String text = "御泥坊";
/**
* 排除情况
*/
if (text == null || "".equals(text) || text.length() < 1) {
return;
}
/**
* 把输入的文本转为二维码
*/
try {
BitMatrix martix = writer.encode(text, BarcodeFormat.QR_CODE,
QR_WIDTH, QR_HEIGHT);
Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
BitMatrix bitMatrix = new QRCodeWriter().encode(text,
BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT, hints);
int[] pixels = new int[QR_WIDTH * QR_HEIGHT];
for (int y = 0; y < QR_HEIGHT; y++) {
for (int x = 0; x < QR_WIDTH; x++) {
if (bitMatrix.get(x, y)) {
pixels[y * QR_WIDTH + x] = 0xff000000;
} else {
pixels[y * QR_WIDTH + x] = 0xffffffff;
}
}
}
Bitmap bitmap = Bitmap.createBitmap(QR_WIDTH, QR_HEIGHT,
Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, QR_WIDTH, 0, 0, QR_WIDTH, QR_HEIGHT);
/**
* 显示
*/
qr_code_image.setImageBitmap(bitmap);
} catch (WriterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.image_back_about:
finish();
break;
default:
break;
}
}
}
private ImageView qr_code_image;
private ImageView image_back_about;
private final static int SCANNIN_GREQUEST_CODE = 1;
private static final int QR_WIDTH = 200;
private static final int QR_HEIGHT = 200;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_code);
// 初始化控件
initview();
//生成二维码
createQRCodeImage();
}
/**
* 初始化控件
*/
private void initview() {
// 生成二维码的图片
qr_code_image = (ImageView) findViewById(R.id.qr_code_image);
image_back_about = (ImageView) findViewById(R.id.image_back_about);
image_back_about.setOnClickListener(this);
}
protected void createQRCodeImage() {
// TODO Auto-generated method stub
QRCodeWriter writer = new QRCodeWriter();
String text = "御泥坊";
/**
* 排除情况
*/
if (text == null || "".equals(text) || text.length() < 1) {
return;
}
/**
* 把输入的文本转为二维码
*/
try {
BitMatrix martix = writer.encode(text, BarcodeFormat.QR_CODE,
QR_WIDTH, QR_HEIGHT);
Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
BitMatrix bitMatrix = new QRCodeWriter().encode(text,
BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT, hints);
int[] pixels = new int[QR_WIDTH * QR_HEIGHT];
for (int y = 0; y < QR_HEIGHT; y++) {
for (int x = 0; x < QR_WIDTH; x++) {
if (bitMatrix.get(x, y)) {
pixels[y * QR_WIDTH + x] = 0xff000000;
} else {
pixels[y * QR_WIDTH + x] = 0xffffffff;
}
}
}
Bitmap bitmap = Bitmap.createBitmap(QR_WIDTH, QR_HEIGHT,
Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, QR_WIDTH, 0, 0, QR_WIDTH, QR_HEIGHT);
/**
* 显示
*/
qr_code_image.setImageBitmap(bitmap);
} catch (WriterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.image_back_about:
finish();
break;
default:
break;
}
}
}
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