Zxing二维码扫描的三个类(可自定义扫描框)
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先添加依赖
compile 'com.journeyapps:zxing-android-embedded:3.3.0'
清单文件配置权限
<uses-permission android:name="android.permission.CAMERA" /><uses-permission android:name="android.permission.INTERNET" /><uses-permission android:name="android.permission.VIBRATE" /><uses-permission android:name="android.permission.FLASHLIGHT" />第一个类
package com.coofond.zxingdemo;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;import com.google.zxing.integration.android.IntentIntegrator;import com.google.zxing.integration.android.IntentResult;public class MainActivity extends Activity { private Button btnClick; private TextView tvResult; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initView(); initEvent(); } private void initView() { btnClick = (Button) findViewById(R.id.btn_click); tvResult = (TextView) findViewById(R.id.tv_result); } private void initEvent() { btnClick.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { //假如你要用的是fragment进行界面的跳转 //IntentIntegrator intentIntegrator = IntentIntegrator.forSupportFragment(ShopFragment.this).setCaptureActivity(CustomScanAct.class); IntentIntegrator intentIntegrator = new IntentIntegrator(MainActivity.this); intentIntegrator .setDesiredBarcodeFormats(IntentIntegrator.ALL_CODE_TYPES) .setPrompt("将二维码/条码放入框内,即可自动扫描")//写那句提示的话 .setOrientationLocked(false)//扫描方向固定 .setCaptureActivity(CustomScanAct.class) // 设置自定义的activity是CustomActivity .initiateScan(); // 初始化扫描 } }); } //获取扫描的结果 @Override public void onActivityResult(int requestCode, int resultCode, Intent data) { IntentResult intentResult = IntentIntegrator.parseActivityResult(requestCode, resultCode, data); if (intentResult != null) { if (intentResult.getContents() == null) { } else { // ScanResult 为获取到的字符串 String ScanResult = intentResult.getContents(); tvResult.setText(ScanResult); } } else { super.onActivityResult(requestCode, resultCode, data); } }}
第二个类,可自定义扫描框
package com.coofond.zxingdemo;import android.content.Context;import android.graphics.Canvas;import android.graphics.LinearGradient;import android.graphics.Rect;import android.graphics.Shader;import android.util.AttributeSet;import com.google.zxing.ResultPoint;import com.journeyapps.barcodescanner.ViewfinderView;import java.util.ArrayList;import java.util.List;/** * 自定义zxing二维码扫描界面 * Created by hutao on 2016/10/20. */public class CustomViewfinderView extends ViewfinderView { public int laserLinePosition=0; public float[] position=new float[]{0f,0.5f,1f}; public int[] colors=new int[]{0x00ffffff,0xffffffff,0x00ffffff}; public LinearGradient linearGradient ; public CustomViewfinderView(Context context, AttributeSet attrs) { super(context, attrs); } /** * 重写draw方法绘制自己的扫描框 * @param canvas */ @Override public void onDraw(Canvas canvas) { refreshSizes(); if (framingRect == null || previewFramingRect == null) { return; } Rect frame = framingRect; Rect previewFrame = previewFramingRect; int width = canvas.getWidth(); int height = canvas.getHeight(); //绘制4个角 paint.setColor(0xFFFFFFFF);//定义画笔的颜色 canvas.drawRect(frame.left, frame.top, frame.left+70, frame.top+10, paint); canvas.drawRect(frame.left, frame.top, frame.left + 10, frame.top + 70, paint); canvas.drawRect(frame.right-70, frame.top, frame.right, frame.top+10, paint); canvas.drawRect(frame.right-10, frame.top, frame.right, frame.top+70, paint); canvas.drawRect(frame.left, frame.bottom-10, frame.left+70, frame.bottom, paint); canvas.drawRect(frame.left, frame.bottom-70, frame.left+10, frame.bottom, paint); canvas.drawRect(frame.right-70, frame.bottom-10, frame.right, frame.bottom, paint); canvas.drawRect(frame.right-10, frame.bottom-70, frame.right, frame.bottom, paint); // Draw the exterior (i.e. outside the framing rect) darkened paint.setColor(resultBitmap != null ? resultColor : maskColor); canvas.drawRect(0, 0, width, frame.top, paint); canvas.drawRect(0, frame.top, frame.left, frame.bottom + 1, paint); canvas.drawRect(frame.right + 1, frame.top, width, frame.bottom + 1, paint); canvas.drawRect(0, frame.bottom + 1, width, height, paint); if (resultBitmap != null) { // Draw the opaque result bitmap over the scanning rectangle paint.setAlpha(CURRENT_POINT_OPACITY); canvas.drawBitmap(resultBitmap, null, frame, paint); } else { // paint.setAlpha(SCANNER_ALPHA[scannerAlpha]); // scannerAlpha = (scannerAlpha + 1) % SCANNER_ALPHA.length; int middle = frame.height() / 2 + frame.top; laserLinePosition=laserLinePosition+5; if(laserLinePosition>frame.height()) { laserLinePosition=0; } linearGradient= new LinearGradient(frame.left + 1, frame.top+laserLinePosition , frame.right -1 , frame.top +10+laserLinePosition, colors, position, Shader.TileMode.CLAMP); // Draw a red "laser scanner" line through the middle to show decoding is active // paint.setColor(laserColor); paint.setShader(linearGradient); //绘制扫描线 canvas.drawRect(frame.left + 1, frame.top+laserLinePosition , frame.right -1 , frame.top +10+laserLinePosition, paint); paint.setShader(null); float scaleX = frame.width() / (float) previewFrame.width(); float scaleY = frame.height() / (float) previewFrame.height(); List<ResultPoint> currentPossible = possibleResultPoints; List<ResultPoint> currentLast = lastPossibleResultPoints; int frameLeft = frame.left; int frameTop = frame.top; if (currentPossible.isEmpty()) { lastPossibleResultPoints = null; } else { possibleResultPoints = new ArrayList<>(5); lastPossibleResultPoints = currentPossible; paint.setAlpha(CURRENT_POINT_OPACITY); paint.setColor(resultPointColor); for (ResultPoint point : currentPossible) { canvas.drawCircle(frameLeft + (int) (point.getX() * scaleX), frameTop + (int) (point.getY() * scaleY), POINT_SIZE, paint); } } if (currentLast != null) { paint.setAlpha(CURRENT_POINT_OPACITY / 2); paint.setColor(resultPointColor); float radius = POINT_SIZE / 2.0f; for (ResultPoint point : currentLast) { canvas.drawCircle(frameLeft + (int) (point.getX() * scaleX), frameTop + (int) (point.getY() * scaleY), radius, paint); } } postInvalidateDelayed(16, frame.left , frame.top , frame.right , frame.bottom); // postInvalidate(); } }}
第三个类
package com.coofond.zxingdemo;import android.app.Activity;import android.content.pm.PackageManager;import android.os.Bundle;import android.os.PersistableBundle;import android.view.KeyEvent;import android.view.View;import android.widget.Button;import android.widget.Toast;import com.journeyapps.barcodescanner.CaptureManager;import com.journeyapps.barcodescanner.DecoratedBarcodeView;/** * Created by hutao on 2016/10/13.
*/public class CustomScanAct extends Activity implements DecoratedBarcodeView.TorchListener { // 实现相关接口 // 添加一个按钮用来控制闪光灯,同时添加两个按钮表示其他功能,先用Toast表示 Button swichLight; DecoratedBarcodeView mDBV; private CaptureManager captureManager; private boolean isLightOn = false; @Override protected void onPause() { super.onPause(); captureManager.onPause(); } @Override protected void onResume() { super.onResume(); captureManager.onResume(); } @Override protected void onDestroy() { super.onDestroy(); captureManager.onDestroy(); } @Override public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) { super.onSaveInstanceState(outState, outPersistentState); captureManager.onSaveInstanceState(outState); } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { return mDBV.onKeyDown(keyCode, event) || super.onKeyDown(keyCode, event); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.act_customscan); swichLight = (Button) findViewById(R.id.btn_switch); mDBV= (DecoratedBarcodeView) findViewById(R.id.dbv_custom); mDBV.setTorchListener(this); // 如果没有闪光灯功能,就去掉相关按钮 if (!hasFlash()) { swichLight.setVisibility(View.GONE); } //重要代码,初始化捕获 captureManager = new CaptureManager(this, mDBV); captureManager.initializeFromIntent(getIntent(), savedInstanceState); captureManager.decode(); //选择闪关灯 swichLight.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (isLightOn) { mDBV.setTorchOff(); } else { mDBV.setTorchOn(); } } }); } // torch 手电筒 @Override public void onTorchOn() { Toast.makeText(this, "torch on", Toast.LENGTH_LONG).show(); isLightOn = true; } @Override public void onTorchOff() { Toast.makeText(this, "torch off", Toast.LENGTH_LONG).show(); isLightOn = false; } // 判断是否有闪光灯功能 private boolean hasFlash() { return getApplicationContext().getPackageManager() .hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH); }}
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