android 二维码扫描

/*
 * Copyright (C) 2008 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.stategrid.echarge.module.charge.activity;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.graphics.Rect;
import android.hardware.Camera;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.animation.Animation;
import android.view.animation.TranslateAnimation;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.google.zxing.Result;
import com.stategrid.echarge.R;
import com.stategrid.echarge.entry.base.BaseActivity;
import com.stategrid.echarge.entry.base.BaseApi;
import com.stategrid.echarge.entry.base.Interface;
import com.stategrid.echarge.module.my.activity.OrderActivity;
import com.stategrid.echarge.module.my.bean.ScaningcodeBean;
import com.stategrid.echarge.utils.IntentUtil;
import com.stategrid.echarge.utils.LitePalBean;
import com.stategrid.echarge.utils.RetrofitUtils;
import com.stategrid.echarge.utils.TokenDialogUtils;
import com.stategrid.echarge.utils.zxing.camera.CameraManager;
import com.stategrid.echarge.utils.zxing.decode.DecodeThread;
import com.stategrid.echarge.utils.zxing.utils.BeepManager;
import com.stategrid.echarge.utils.zxing.utils.CaptureActivityHandler;
import com.stategrid.echarge.utils.zxing.utils.InactivityTimer;

import org.litepal.crud.DataSupport;

import java.io.IOException;
import java.lang.reflect.Field;
import java.util.HashMap;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;
import retrofit2.Retrofit;


/**
 * This activity opens the camera and does the actual scanning on a background
 * thread. It draws a viewfinder to help the user place the barcode correctly,
 * shows feedback as the image processing is happening, and then overlays the
 * results when a scan is successful.
 *
 * @author [email protected] (Daniel Switkin)
 * @author Sean Owen
 */
public final class CaptureActivity extends BaseActivity implements SurfaceHolder.Callback {

    private static final String TAG = CaptureActivity.class.getSimpleName();

    private CameraManager cameraManager;
    private CaptureActivityHandler handler;
    private InactivityTimer inactivityTimer;
    private BeepManager beepManager;

    private SurfaceView scanPreview = null;
    private RelativeLayout scanContainer;
    private RelativeLayout scanCropView;
    private ImageView scanLine;

    private Rect mCropRect = null;
    private boolean isHasSurface = false;
    private RelativeLayout tv;
    private TextView tv1;
    private Camera camera;
    private boolean isOpen = false;
    private Camera.Parameters params;
    private LitePalBean bean;

    public Handler getHandler() {
        return handler;
    }

    public CameraManager getCameraManager() {
        return cameraManager;
    }

    @Override
    public void setContent() {
        setContentView(R.layout.activity_capture);
    }

    @Override
    public void setWindown() {
        super.setWindown();
        Window window = getWindow();
        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

    }

    @Override
    public void findView() {

        scanPreview = (SurfaceView) findViewById(R.id.capture_preview);
        scanContainer = (RelativeLayout) findViewById(R.id.capture_container);
        scanCropView = (RelativeLayout) findViewById(R.id.capture_crop_view);
        scanLine = (ImageView) findViewById(R.id.capture_scan_line);
        tv = (RelativeLayout) findViewById(R.id.rl_black);
        tv1 = (TextView) findViewById(R.id.tv_falsh);
    }

    @Override
    public void setValue() {
        tv1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (!isOpen) {

                    tv1.setText("关灯");
                    openLight();
                } else {

                    tv1.setText("开灯");
                    closeLight();
                }
            }
        });
        tv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                CaptureActivity.this.finish();
            }
        });
        inactivityTimer = new InactivityTimer(this);
        beepManager = new BeepManager(this);

        TranslateAnimation animation = new TranslateAnimation(Animation.RELATIVE_TO_PARENT, 0.0f, Animation
                .RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT, 0.0f, Animation.RELATIVE_TO_PARENT,
                0.9f);
        animation.setDuration(4500);
        animation.setRepeatCount(-1);
        animation.setRepeatMode(Animation.RESTART);
        scanLine.startAnimation(animation);
    }

    @Override
    public void onResume() {
        super.onResume();

        // CameraManager must be initialized here, not in onCreate(). This is
        // necessary because we don't
        // want to open the camera driver and measure the screen size if we're
        // going to show the help on
        // first launch. That led to bugs where the scanning rectangle was the
        // wrong size and partially
        // off screen.
        cameraManager = new CameraManager(getApplication());

        handler = null;

        if (isHasSurface) {
            // The activity was paused but not stopped, so the surface still
            // exists. Therefore
            // surfaceCreated() won't be called, so init the camera here.
            initCamera(scanPreview.getHolder());
        } else {
            // Install the callback and wait for surfaceCreated() to init the
            // camera.
            scanPreview.getHolder().addCallback(this);
        }

        inactivityTimer.onResume();
    }

    @Override
    public void onPause() {
        if (handler != null) {
            handler.quitSynchronously();
            handler = null;
        }
        inactivityTimer.onPause();
        beepManager.close();
        cameraManager.closeDriver();
        if (!isHasSurface) {
            scanPreview.getHolder().removeCallback(this);
        }
        super.onPause();
    }

    @Override
    protected void onDestroy() {
        inactivityTimer.shutdown();
        super.onDestroy();

    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        if (holder == null) {
            Log.e(TAG, "*** WARNING *** surfaceCreated() gave us a null surface!");
        }
        if (!isHasSurface) {
            isHasSurface = true;
            initCamera(holder);
        }
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        isHasSurface = false;
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

    }

    /**
     * A valid barcode has been found, so give an indication of success and show
     * the results.
     *
     * @param rawResult The contents of the barcode.
     * @param bundle    The extras
     *                  扫描完成后的操作
     */
    public void handleDecode(Result rawResult, Bundle bundle) {
        inactivityTimer.onActivity();
        beepManager.playBeepSoundAndVibrate();
        Log.e("tag", rawResult.getText());
//        Intent intent = new Intent();
//        Intent resultIntent = intent;
//        bundle.putInt("width", mCropRect.width());
//        bundle.putInt("height", mCropRect.height());
//        bundle.putString("result", rawResult.getText());
//        resultIntent.putExtras(bundle);
//        this.setResult(RESULT_OK, resultIntent);
        if (rawResult.getText() != null || rawResult.getText().equals("")) {

            bean = DataSupport.findFirst(LitePalBean.class);

            if (bean != null) {
                HashMap map = new HashMap();
                map.put("encryptData", rawResult.getText());

                Retrofit retrofitutild = RetrofitUtils.retrofitutild(CaptureActivity.this, Interface.BASEURL2, "扫码开启充电中");
                BaseApi baseApi = retrofitutild.create(BaseApi.class);
                Call<ScaningcodeBean> call = baseApi.getScaningCode(bean.getToken(), map);
                call.enqueue(new Callback<ScaningcodeBean>() {
                    @Override
                    public void onResponse(Call<ScaningcodeBean> call, Response<ScaningcodeBean> response) {

                        RetrofitUtils.loadingDialog.dismiss();
                        ScaningcodeBean bean1 = response.body();
                        if (bean1 == null) return;
                        if (bean1.getCode() == 0) {
                            IntentUtil.startIntent(CaptureActivity.this, OrderActivity.class, "postion", "1");
                            finish();
                        } else if (bean1.getCode() == 2) {

                            TokenDialogUtils.tokenDialog(CaptureActivity.this);
                        } else {
                            Toast.makeText(CaptureActivity.this, bean1.getError().toString(), Toast.LENGTH_SHORT).show();
                        }

                    }

                    @Override
                    public void onFailure(Call<ScaningcodeBean> call, Throwable t) {
                        RetrofitUtils.loadingDialog.dismiss();
                        t.printStackTrace();
                        Toast.makeText(CaptureActivity.this, "联网失败", Toast.LENGTH_SHORT).show();

                    }
                });
            }
        }
    }

    private void initCamera(SurfaceHolder surfaceHolder) {
        if (surfaceHolder == null) {
            throw new IllegalStateException("No SurfaceHolder provided");
        }
        if (cameraManager.isOpen()) {
            Log.w(TAG, "initCamera() while already open -- late SurfaceView callback?");
            return;
        }
        try {
            cameraManager.openDriver(surfaceHolder);
            // Creating the handler starts the preview, which can also throw a
            // RuntimeException.
            if (handler == null) {
                handler = new CaptureActivityHandler(this, cameraManager, DecodeThread.ALL_MODE);
            }

            initCrop();
        } catch (IOException ioe) {
            Log.w(TAG, ioe);
            displayFrameworkBugMessageAndExit();
        } catch (RuntimeException e) {
            // Barcode Scanner has seen crashes in the wild of this variety:
            // java.?lang.?RuntimeException: Fail to connect to camera service
            Log.w(TAG, "Unexpected error initializing camera", e);
            displayFrameworkBugMessageAndExit();
        }
    }

    private void displayFrameworkBugMessageAndExit() {
        // camera error
        AlertDialog.Builder builder = new AlertDialog.Builder(this);
        builder.setTitle(getString(R.string.app_name));
        builder.setMessage("1、扫码充电必须使用相机功能；\n" +
                "2、请您进入应用权限管理，开启“e充电”的相机权限。\n");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
                finish();
            }

        });
        builder.setOnCancelListener(new DialogInterface.OnCancelListener() {

            @Override
            public void onCancel(DialogInterface dialog) {
                finish();
            }
        });
        builder.show();
    }

    public void restartPreviewAfterDelay(long delayMS) {
        if (handler != null) {
            handler.sendEmptyMessageDelayed(R.id.restart_preview, delayMS);
        }
    }

    public Rect getCropRect() {
        return mCropRect;
    }

    /**
     * 初始化截取的矩形区域
     */
    private void initCrop() {
        int cameraWidth = cameraManager.getCameraResolution().y;
        int cameraHeight = cameraManager.getCameraResolution().x;

        /** 获取布局中扫描框的位置信息 */
        int[] location = new int[2];
        scanCropView.getLocationInWindow(location);

        int cropLeft = location[0];
        int cropTop = location[1] - getStatusBarHeight();

        int cropWidth = scanCropView.getWidth();
        int cropHeight = scanCropView.getHeight();

        /** 获取布局容器的宽高 */
        int containerWidth = scanContainer.getWidth();
        int containerHeight = scanContainer.getHeight();

        /** 计算最终截取的矩形的左上角顶点x坐标 */
        int x = cropLeft * cameraWidth / containerWidth;
        /** 计算最终截取的矩形的左上角顶点y坐标 */
        int y = cropTop * cameraHeight / containerHeight;

        /** 计算最终截取的矩形的宽度 */
        int width = cropWidth * cameraWidth / containerWidth;
        /** 计算最终截取的矩形的高度 */
        int height = cropHeight * cameraHeight / containerHeight;

        /** 生成最终的截取的矩形 */
        mCropRect = new Rect(x, y, width + x, height + y);
    }

    private int getStatusBarHeight() {
        try {
            Class<?> c = Class.forName("com.android.internal.R$dimen");
            Object obj = c.newInstance();
            Field field = c.getField("status_bar_height");
            int x = Integer.parseInt(field.get(obj).toString());
            return getResources().getDimensionPixelSize(x);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return 0;
    }

    private void openLight() //开闪光灯
    {//我们先前在CameraManager类中添加的静态方法
        camera = CameraManager.getCamera();
        params = camera.getParameters();
        params.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
        camera.setParameters(params);
        camera.startPreview();
        isOpen = true;
    }

    private void closeLight() //关闪光灯
    {
        params.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
        camera.setParameters(params);
        isOpen = false;
    }
}