Java tutorial
/* * Copyright (C) 2016 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.hxsn.witwork.ui; import android.annotation.SuppressLint; import android.content.Context; import android.content.res.Resources; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Paint; import android.graphics.Paint.Style; import android.graphics.Rect; import android.graphics.drawable.BitmapDrawable; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.Toast; import com.andbase.library.app.camera.CameraManager; import com.andbase.ssk.utils.LogUtil; import com.google.zxing.ResultPoint; import com.hxsn.witwork.R; import com.hxsn.witwork.utils.Const; import com.loopj.android.http.AsyncHttpClient; import com.loopj.android.http.AsyncHttpResponseHandler; import com.loopj.android.http.RequestParams; import org.apache.http.Header; import org.json.JSONObject; import java.util.ArrayList; import java.util.Collection; import java.util.HashSet; /** * This view is overlaid on top of the camera preview. It adds the viewfinder * rectangle and partial transparency outside it, as well as the laser scanner * animation and result points. * */ @SuppressLint("ClickableViewAccessibility") public final class ViewfinderView extends View implements OnTouchListener { private static final String TAG = "log"; /** * ? */ private static final long ANIMATION_DELAY = 10L; private static final int OPAQUE = 0xFF; /** * */ private int ScreenRate; /** * */ private static final int CORNER_WIDTH = 5; /** * ?? */ private static final int MIDDLE_LINE_WIDTH = 6; /** * ????? */ private static final int MIDDLE_LINE_PADDING = 2; /** * ??? */ private static final int SPEEN_DISTANCE = 5; /** * ? */ private static float density; /** * ? */ private static final int TEXT_SIZE = 14; /** * ????? */ private static final int TEXT_PADDING_TOP = 30; /** * */ private Paint paint; /** * ? */ private int slideTop; /** * ? */ private int slideBottom; /** * ?????? */ private Bitmap resultBitmap; private final int maskColor; private final int resultColor; private final int resultPointColor; private Collection<ResultPoint> possibleResultPoints; private Collection<ResultPoint> lastPossibleResultPoints; boolean isFirst; private int num = 0; // private int firstNum = 0; private ArrayList<String> name = null; private Context con; public ViewfinderView(Context context, AttributeSet attrs) { super(context, attrs); con = context; name = new ArrayList<String>(); density = context.getResources().getDisplayMetrics().density; // ???dp ScreenRate = (int) (20 * density); paint = new Paint(); Resources resources = getResources(); maskColor = resources.getColor(R.color.viewfinder_mask); resultColor = resources.getColor(R.color.result_view); resultPointColor = resources.getColor(R.color.possible_result_points); possibleResultPoints = new HashSet<ResultPoint>(5); } @Override public void onDraw(Canvas canvas) { // ??????CameraManager? if (CameraManager.get() == null) { return; } Rect frame = CameraManager.get().getFramingRect(); if (frame == null) { return; } // ? if (!isFirst) { isFirst = true; slideTop = frame.top; slideBottom = frame.bottom; } // ?? int width = canvas.getWidth(); int height = canvas.getHeight(); paint.setColor(resultBitmap != null ? resultColor : maskColor); // ????????????? // ????????? canvas.drawRect(0, 0, width, frame.top + 15, paint); canvas.drawRect(0, frame.top + 15, frame.left + 15, frame.bottom - 14, paint); canvas.drawRect(frame.right - 14, frame.top + 15, width, frame.bottom - 14, paint); canvas.drawRect(0, frame.bottom - 14, width, height, paint); if (resultBitmap != null) { // Draw the opaque result bitmap over the scanning rectangle paint.setAlpha(OPAQUE); canvas.drawBitmap(resultBitmap, frame.left, frame.top, paint); } else { // ??8 paint.setColor(Color.rgb(139, 193, 17)); canvas.drawRect(frame.left, frame.top, frame.left + ScreenRate, frame.top + CORNER_WIDTH, paint); canvas.drawRect(frame.left, frame.top, frame.left + CORNER_WIDTH, frame.top + ScreenRate, paint); canvas.drawRect(frame.right - ScreenRate, frame.top, frame.right, frame.top + CORNER_WIDTH, paint); canvas.drawRect(frame.right - CORNER_WIDTH, frame.top, frame.right, frame.top + ScreenRate, paint); canvas.drawRect(frame.left, frame.bottom - CORNER_WIDTH, frame.left + ScreenRate, frame.bottom, paint); canvas.drawRect(frame.left, frame.bottom - ScreenRate, frame.left + CORNER_WIDTH, frame.bottom, paint); canvas.drawRect(frame.right - ScreenRate, frame.bottom - CORNER_WIDTH, frame.right, frame.bottom, paint); canvas.drawRect(frame.right - CORNER_WIDTH, frame.bottom - ScreenRate, frame.right, frame.bottom, paint); // ,??SPEEN_DISTANCE slideTop += SPEEN_DISTANCE; if (slideTop >= frame.bottom) { slideTop = frame.top; } // canvas.drawRect(frame.left + MIDDLE_LINE_PADDING, slideTop - // MIDDLE_LINE_WIDTH/2, frame.right - MIDDLE_LINE_PADDING,slideTop + // MIDDLE_LINE_WIDTH/2, paint); Rect lineRect = new Rect(); lineRect.left = frame.left; lineRect.right = frame.right; lineRect.top = slideTop; lineRect.bottom = slideTop + 18; canvas.drawBitmap(((BitmapDrawable) (getResources().getDrawable(R.drawable.fgx))).getBitmap(), null, lineRect, paint); // ??? paint.setColor(Color.WHITE); paint.setTextSize(TEXT_SIZE * density); // paint.setAlpha(0x40); // paint.setTypeface(Typeface.create("System", Typeface.BOLD)); canvas.drawText("?/??????", frame.left, (float) (frame.bottom + (float) TEXT_PADDING_TOP * density), paint); canvas.drawText("??" + num + "", frame.left, (float) (frame.bottom + (float) TEXT_PADDING_TOP * density + 50), paint); int max = 7; if (name.size() < max) { max = name.size(); for (int i = 0; i < max; i++) { canvas.drawText(name.get(i), frame.left, (float) (frame.bottom + (float) TEXT_PADDING_TOP * density + 100 + 50 * i), paint); } } else { for (int i = 6; i >= 0; i--) { canvas.drawText(name.get((name.size() - 1) - (6 - i)), frame.left, (float) (frame.bottom + (float) TEXT_PADDING_TOP * density + 100 + 50 * i), paint); } } paint.setStyle(Style.STROKE); canvas.drawRect(frame.left + 15, frame.top + 15, frame.right - 15, frame.bottom - 15, paint); setViewY(frame.bottom); paint.setStyle(Style.FILL); Collection<ResultPoint> currentPossible = possibleResultPoints; Collection<ResultPoint> currentLast = lastPossibleResultPoints; if (currentPossible.isEmpty()) { lastPossibleResultPoints = null; } else { possibleResultPoints = new HashSet<ResultPoint>(5); lastPossibleResultPoints = currentPossible; paint.setAlpha(OPAQUE); paint.setColor(resultPointColor); for (ResultPoint point : currentPossible) { canvas.drawCircle(frame.left + point.getX(), frame.top + point.getY(), 6.0f, paint); } } if (currentLast != null) { paint.setAlpha(OPAQUE / 2); paint.setColor(resultPointColor); for (ResultPoint point : currentLast) { canvas.drawCircle(frame.left + point.getX(), frame.top + point.getY(), 3.0f, paint); } } // ???? postInvalidate(); // postInvalidateDelayed(ANIMATION_DELAY, frame.left, frame.top, // frame.right, frame.bottom); } } public int getViewY() { return viewY + 40; } private int viewY; public void setViewY(int height) { viewY = height; } public void drawViewfinder() { resultBitmap = null; invalidate(); } /** * Draw a bitmap with the result points highlighted instead of the live * scanning display. * * @param barcode * An image of the decoded barcode. */ public void drawResultBitmap(Bitmap barcode) { resultBitmap = barcode; invalidate(); } public void addPossibleResultPoint(ResultPoint point) { possibleResultPoints.add(point); } public void setName(String name) { getName(name); } public int getNameSize() { return this.name.size(); } // public void setFirstNum(int firstNum) { // this.firstNum = firstNum; // } private void getName(final String nameCode) { AsyncHttpClient httpClient = new AsyncHttpClient(); RequestParams param = new RequestParams(); try { param.put("app", 3); param.put("uid", Shared.getUserID()); param.put("code", nameCode); Log.i("param", param.toString()); // LogUtil.showLog("WorkDJActivity", GetURL.SUBMITWORK); // LogUtil.showLog("WorkDJActivity", param.toString()); httpClient.post(Const.DK_NAME, param, new AsyncHttpResponseHandler() { public void onStart() { } public void onFailure(int arg0, Header[] arg1, byte[] arg2, Throwable arg3) { arg3.printStackTrace(); } public void onSuccess(int arg0, Header[] arg1, byte[] arg2) { String s; try { s = new String(arg2, "UTF-8"); LogUtil.i("WorkDJActivity", s); JSONObject js; js = new JSONObject(s); String code = js.getString("code"); if (code.equals("200")) { JSONObject object = new JSONObject(js.getString("result")); String result = object.getString(nameCode); for (int i = 0; i < ViewfinderView.this.name.size(); i++) { if (ViewfinderView.this.name.get(i).equals(result)) { return; } } ViewfinderView.this.name.add(result); num++; } else if (code.equals("101")) { Toast.makeText(con, "??", Toast.LENGTH_SHORT).show(); } } catch (Exception e) { e.printStackTrace(); } } }); } catch (Exception e) { e.printStackTrace(); } } @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub // float DownY = -1; // switch (event.getAction()) { // case MotionEvent.ACTION_DOWN: // DownY = event.getY();//float DownY // break; // case MotionEvent.ACTION_MOVE: // float moveY = event.getY() - DownY;//y? // moveY = Math.abs(moveY); // int num = (int) (moveY/50); // LogUtil.showLog(TAG, num + ""); // if (!(num > getNameSize() - 5)) { // setFirstNum(num); // } // break; // case MotionEvent.ACTION_UP: // DownY = -1; // break; // } return false; } }