Zxing二維碼掃描的三個類（可自定義掃描框）
阿新 • • 發佈：2019-02-14
先新增依賴
compile 'com.journeyapps:zxing-android-embedded:3.3.0'
清單檔案配置許可權
<uses-permission android:name="android.permission.CAMERA" /> <uses-permission android:name="android.permission.INTERNET" /> <uses-permission android:name="android.permission.VIBRATE" /> <uses-permission android第一個類:name="android.permission.FLASHLIGHT" />
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進行介面的跳轉
//IntentIntegrator intentIntegrator = IntentIntegrator.forSupportFragment(ShopFragment.this).setCaptureActivity(CustomScanAct.class);
IntentIntegrator intentIntegrator = new IntentIntegrator(MainActivity.this);
intentIntegrator
.setDesiredBarcodeFormats(IntentIntegrator.ALL_CODE_TYPES)
.setPrompt("將二維碼/條碼放入框內，即可自動掃描")//寫那句提示的話
.setOrientationLocked(false)//掃描方向固定
.setCaptureActivity(CustomScanAct.class) // 設定自定義的activity是CustomActivity
.initiateScan(); // 初始化掃描
}
});
}
//獲取掃描的結果
@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 為獲取到的字串
String ScanResult = intentResult.getContents();
tvResult.setText(ScanResult);
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
}
第二個類，可自定義掃描框
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;
/**
* 自定義zxing二維碼掃描介面
* 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);
}
/**
* 重寫draw方法繪製自己的掃描框
* @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();
//繪製4個角
paint.setColor(0xFFFFFFFF);//定義畫筆的顏色
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);
//繪製掃描線
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();
}
}
}
第三個類
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 { // 實現相關介面
// 新增一個按鈕用來控制閃光燈，同時新增兩個按鈕表示其他功能，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);
// 如果沒有閃光燈功能，就去掉相關按鈕
if (!hasFlash()) {
swichLight.setVisibility(View.GONE);
}
//重要程式碼，初始化捕獲
captureManager = new CaptureManager(this, mDBV);
captureManager.initializeFromIntent(getIntent(), savedInstanceState);
captureManager.decode();
//選擇閃關燈
swichLight.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isLightOn) {
mDBV.setTorchOff();
} else {
mDBV.setTorchOn();
}
}
});
}
// torch 手電筒
@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;
}
// 判斷是否有閃光燈功能
private boolean hasFlash() {
return getApplicationContext().getPackageManager()
.hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH);
}
}