項(xiàng)目中涉及到車牌識(shí)別牍鞠、銀行卡識(shí)別奔缠、駕駛證識(shí)別(等)
總依賴
implementation 'com.shouzhong:Scanner:1.1.3'
選擇性依賴
// zxing
implementation 'com.google.zxing:core:3.3.3'
// zbar
implementation 'com.shouzhong:ScannerZBarLib:1.0.0'
// 銀行卡識(shí)別
implementation 'com.shouzhong:ScannerBankCardLib:1.0.3'
// 身份證識(shí)別
implementation 'com.shouzhong:ScannerIdCardLib:1.0.4'
// 車牌識(shí)別
implementation 'com.shouzhong:ScannerLicensePlateLib:1.0.3'
// 圖片文字識(shí)別
implementation 'com.shouzhong:ScannerTextLib:1.0.0'
// 黃圖識(shí)別
implementation 'com.shouzhong:ScannerNsfwLib:1.0.0'
// 駕駛證識(shí)別
implementation 'com.shouzhong:ScannerDrivingLicenseLib:1.0.1'
// 身份證識(shí)別(第二種方式)
implementation 'com.shouzhong:ScannerIdCard2Lib:1.0.0'
如果依賴下載緩慢請(qǐng)?jiān)趐roiect中的build.gradle
allprojects {
repositories {
google()
mavenCentral()
//添加這一行
maven { url 'https://jitpack.io' }
jcenter() // Warning: this repository is going to shut down soon
}
}
開源庫(kù)地址 開源庫(kù)最新版本請(qǐng)看wiki
代碼示例
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical"
tools:context=".OCRActivity">
<com.shouzhong.scanner.ScannerView
android:id="@+id/sv"
android:layout_width="match_parent"
android:layout_height="1080px"
android:background="#000000" />
<TextView
android:id="@+id/tv_name"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
主要代碼
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Point;
import android.graphics.Rect;
import android.os.Bundle;
import android.os.Vibrator;
import android.view.View;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
import com.shouzhong.scanner.Callback;
import com.shouzhong.scanner.IViewFinder;
import com.shouzhong.scanner.Result;
import com.shouzhong.scanner.ScannerView;
public class OCRActivity extends AppCompatActivity {
private Vibrator vibrator;
private ScannerView scannerView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ocractivity);
scannerView = findViewById(R.id.sv);
TextView viewById = findViewById(R.id.tv_name);
scannerView.setViewFinder(new ViewFinder(this));
// scannerView.setSaveBmp(true);
// scannerView.setEnableZXing(true);
// scannerView.setEnableZBar(true);
// scannerView.setEnableBankCard(true);
// scannerView.setEnableIdCard(true);
scannerView.setEnableLicensePlate(true);
scannerView.setCallback(new Callback() {
@Override
public void result(Result result) {
viewById.setText("識(shí)別結(jié)果:\n" + result.toString());
startVibrator();
scannerView.restartPreviewAfterDelay(2000);
}
});
}
@Override
protected void onResume() {
super.onResume();
scannerView.onResume();
}
@Override
protected void onPause() {
super.onPause();
scannerView.onPause();
}
@Override
protected void onDestroy() {
if (vibrator != null) {
vibrator.cancel();
vibrator = null;
}
super.onDestroy();
}
private void startVibrator() {
if (vibrator == null)
vibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
vibrator.vibrate(300);
}
class ViewFinder extends View implements IViewFinder {
private Rect framingRect;//掃碼框所占區(qū)域
private float widthRatio = 0.9f;//掃碼框?qū)挾日紇iew總寬度的比例
private float heightRatio = 0.8f;
private float heightWidthRatio = 0.5626f;//掃碼框的高寬比
private int leftOffset = -1;//掃碼框相對(duì)于左邊的偏移量这橙,若為負(fù)值柱宦,則掃碼框會(huì)水平居中
private int topOffset = -1;//掃碼框相對(duì)于頂部的偏移量总寒,若為負(fù)值抽米,則掃碼框會(huì)豎直居中
private int laserColor = 0xff008577;// 掃描線顏色
private int maskColor = 0x60000000;// 陰影顏色
private int borderColor = 0xff008577;// 邊框顏色
private int borderStrokeWidth = 12;// 邊框?qū)挾? private int borderLineLength = 72;// 邊框長(zhǎng)度
private Paint laserPaint;// 掃描線
private Paint maskPaint;// 陰影遮蓋畫筆
private Paint borderPaint;// 邊框畫筆
private int position;
public ViewFinder(Context context) {
super(context);
setWillNotDraw(false);//需要進(jìn)行繪制
laserPaint = new Paint();
laserPaint.setColor(laserColor);
laserPaint.setStyle(Paint.Style.FILL);
maskPaint = new Paint();
maskPaint.setColor(maskColor);
borderPaint = new Paint();
borderPaint.setColor(borderColor);
borderPaint.setStyle(Paint.Style.STROKE);
borderPaint.setStrokeWidth(borderStrokeWidth);
borderPaint.setAntiAlias(true);
}
@Override
protected void onSizeChanged(int xNew, int yNew, int xOld, int yOld) {
updateFramingRect();
}
@Override
public void onDraw(Canvas canvas) {
if (getFramingRect() == null) {
return;
}
drawViewFinderMask(canvas);
drawViewFinderBorder(canvas);
drawLaser(canvas);
}
private void drawLaser(Canvas canvas) {
Rect framingRect = getFramingRect();
int top = framingRect.top + 10 + position;
canvas.drawRect(framingRect.left + 10, top, framingRect.right - 10, top + 5, laserPaint);
position = framingRect.bottom - framingRect.top - 25 < position ? 0 : position + 2;
//區(qū)域刷新
postInvalidateDelayed(20, framingRect.left + 10, framingRect.top + 10, framingRect.right - 10, framingRect.bottom - 10);
}
/**
* 繪制掃碼框四周的陰影遮罩
*/
private void drawViewFinderMask(Canvas canvas) {
int width = canvas.getWidth();
int height = canvas.getHeight();
Rect framingRect = getFramingRect();
canvas.drawRect(0, 0, width, framingRect.top, maskPaint);//掃碼框頂部陰影
canvas.drawRect(0, framingRect.top, framingRect.left, framingRect.bottom, maskPaint);//掃碼框左邊陰影
canvas.drawRect(framingRect.right, framingRect.top, width, framingRect.bottom, maskPaint);//掃碼框右邊陰影
canvas.drawRect(0, framingRect.bottom, width, height, maskPaint);//掃碼框底部陰影
}
/**
* 繪制掃碼框的邊框
*/
private void drawViewFinderBorder(Canvas canvas) {
Rect framingRect = getFramingRect();
// Top-left corner
Path path = new Path();
path.moveTo(framingRect.left, framingRect.top + borderLineLength);
path.lineTo(framingRect.left, framingRect.top);
path.lineTo(framingRect.left + borderLineLength, framingRect.top);
canvas.drawPath(path, borderPaint);
// Top-right corner
path.moveTo(framingRect.right, framingRect.top + borderLineLength);
path.lineTo(framingRect.right, framingRect.top);
path.lineTo(framingRect.right - borderLineLength, framingRect.top);
canvas.drawPath(path, borderPaint);
// Bottom-right corner
path.moveTo(framingRect.right, framingRect.bottom - borderLineLength);
path.lineTo(framingRect.right, framingRect.bottom);
path.lineTo(framingRect.right - borderLineLength, framingRect.bottom);
canvas.drawPath(path, borderPaint);
// Bottom-left corner
path.moveTo(framingRect.left, framingRect.bottom - borderLineLength);
path.lineTo(framingRect.left, framingRect.bottom);
path.lineTo(framingRect.left + borderLineLength, framingRect.bottom);
canvas.drawPath(path, borderPaint);
}
/**
* 設(shè)置framingRect的值(掃碼框所占的區(qū)域)
*/
private synchronized void updateFramingRect() {
Point viewSize = new Point(getWidth(), getHeight());
int width = getWidth() * 801 / 1080, height = getWidth() * 811 / 1080;
width = (int) (getWidth() * widthRatio);
// height = (int) (getHeight() * heightRatio);
height = (int) (heightWidthRatio * width);
int left, top;
if (leftOffset < 0) {
left = (viewSize.x - width) / 2;//水平居中
} else {
left = leftOffset;
}
if (topOffset < 0) {
top = (viewSize.y - height) / 2;//豎直居中
} else {
top = topOffset;
}
framingRect = new Rect(left, top, left + width, top + height);
}
@Override
public Rect getFramingRect() {
return framingRect;
}
}
}
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