实例介绍
【实例简介】
【实例截图】
【核心代码】
package com.example.erweima;
import java.util.Hashtable;
import newland.jni.RGBLuminanceSource;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.BinaryBitmap;
import com.google.zxing.ChecksumException;
import com.google.zxing.DecodeHintType;
import com.google.zxing.EncodeHintType;
import com.google.zxing.FormatException;
import com.google.zxing.NotFoundException;
import com.google.zxing.Result;
import com.google.zxing.WriterException;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.common.HybridBinarizer;
import com.google.zxing.qrcode.QRCodeReader;
import com.google.zxing.qrcode.QRCodeWriter;
public class code extends Activity {
private Button m_btn1, m_btn2;
private TextView m_text;
private EditText m_edit;
private ImageView m_image;
int QR_WIDTH = 200, QR_HEIGHT = 200;
private Bitmap bitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
find();
click();
}
private void click() {
// TODO Auto-generated method stub
m_btn1.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
createImage();
}
});
m_btn2.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
scanningImage();
}
});
}
private void createImage() {
// TODO Auto-generated method stub
try {
QRCodeWriter writer = new QRCodeWriter();
String text = m_edit.getText().toString();
if (text == null || "".equals(text) || text.length() < 1) {
return;
}
Hashtable<EncodeHintType, String> hashtable = new Hashtable<EncodeHintType, String>();
hashtable.put(EncodeHintType.CHARACTER_SET, "utf-8");
BitMatrix bitMatrix = new QRCodeWriter().encode(text,
BarcodeFormat.QR_CODE, QR_WIDTH, QR_HEIGHT);
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;
}
}
// 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.createBitmap(QR_WIDTH, QR_HEIGHT,
Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, QR_WIDTH, 0, 0, QR_WIDTH, QR_HEIGHT);
m_image.setImageBitmap(bitmap);
} catch (WriterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
/*
private void createImage() {
try {
// 需要引入core包
QRCodeWriter writer = new QRCodeWriter();
String text = m_edit.getText().toString();
if (text == null || "".equals(text) || text.length() < 1) {
return;
}
// 把输入的文本转为二维码
BitMatrix martix = writer.encode(text, BarcodeFormat.QR_CODE,
QR_WIDTH, QR_HEIGHT);
System.out.println("w:" martix.getWidth() "h:"
martix.getHeight());
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.createBitmap(QR_WIDTH, QR_HEIGHT,
Bitmap.Config.ARGB_8888);
bitmap.setPixels(pixels, 0, QR_WIDTH, 0, 0, QR_WIDTH, QR_HEIGHT);
System.out.println(Environment.getExternalStorageDirectory());
m_image.setImageBitmap(bitmap);
// try {
// saveMyBitmap(bitmap, "code");
// } catch (IOException e) {
// // TODO Auto-generated catch block
// e.printStackTrace();
// }
} catch (WriterException e) {
e.printStackTrace();
}
}
*/
/*
private void scanningImage() {
// TODO Auto-generated method stub
Hashtable<DecodeHintType, String> hashtable = new Hashtable<DecodeHintType, String>();
hashtable.put(DecodeHintType.CHARACTER_SET, "utf-8");
Bitmap bitmap = ((BitmapDrawable) m_image.getDrawable()).getBitmap();
RGBLuminanceSource source = new RGBLuminanceSource(bitmap);
BinaryBitmap bitmap2 = new BinaryBitmap(new HybridBinarizer(source));
QRCodeReader reader = new QRCodeReader();
Result results;
try {
results = reader.decode(bitmap2, hashtable);
m_text.setText(results.getText());
} catch (NotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ChecksumException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (FormatException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}*/
private void scanningImage() {
Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
// Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
// hints.put(DecodeHintType.CHARACTER_SET, "utf-8");
// 获得待解析的图片
Bitmap bitmap = ((BitmapDrawable) m_image.getDrawable()).getBitmap();
RGBLuminanceSource source = new RGBLuminanceSource(bitmap);
BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
QRCodeReader reader = new QRCodeReader();
Result result;
try {
result = reader.decode(bitmap1);
result = reader.decode(bitmap1, hints);
// 得到解析后的文字
m_text.setText(result.getText());
} catch (NotFoundException e) {
e.printStackTrace();
} catch (ChecksumException e) {
e.printStackTrace();
} catch (FormatException e) {
e.printStackTrace();
}
}
private void find() {
// TODO Auto-generated method stub
m_btn1 = (Button) findViewById(R.id.a_create);
m_btn2 = (Button) findViewById(R.id.a_jiexi);
m_edit = (EditText) findViewById(R.id.a_put);
m_image = (ImageView) findViewById(R.id.a_image);
m_text = (TextView) findViewById(R.id.a_show);
}
}
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