实例介绍
【实例简介】
【实例截图】
【核心代码】
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 | package com.zxing.android;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.Vector;import android.app.Activity;import android.app.AlertDialog;import android.content.DialogInterface;import android.content.DialogInterface.OnClickListener;import android.content.Intent;import android.content.pm.ActivityInfo;import android.content.res.AssetFileDescriptor;import android.graphics.Bitmap;import android.graphics.drawable.BitmapDrawable;import android.graphics.drawable.Drawable;import android.media.AudioManager;import android.media.MediaPlayer;import android.media.MediaPlayer.OnCompletionListener;import android.os.Bundle;import android.os.Handler;import android.os.Vibrator;import android.view.KeyEvent;import android.view.SurfaceHolder;import android.view.SurfaceHolder.Callback;import android.view.SurfaceView;import android.view.View;import android.view.Window;import android.view.WindowManager;import com.google.zxing.BarcodeFormat;import com.google.zxing.Result;import com.zxing.android.camera.CameraManager;import com.zxing.android.decoding.CaptureActivityHandler;import com.zxing.android.decoding.InactivityTimer;import com.zxing.android.view.ViewfinderView;public class CaptureActivity extends Activity implements Callback { public static final String QR_RESULT = "RESULT"; private CaptureActivityHandler handler; private ViewfinderView viewfinderView; private SurfaceView surfaceView; private boolean hasSurface; private Vector<BarcodeFormat> decodeFormats; private String characterSet; private InactivityTimer inactivityTimer; private MediaPlayer mediaPlayer; private boolean playBeep; // private static final float BEEP_VOLUME = 0.10f; private boolean vibrate; CameraManager cameraManager; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); /* * this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, * WindowManager.LayoutParams.FLAG_FULLSCREEN);// 去掉信息栏 * * RelativeLayout layout = new RelativeLayout(this); * layout.setLayoutParams(new * ViewGroup.LayoutParams(LayoutParams.FILL_PARENT, * LayoutParams.FILL_PARENT)); * * this.surfaceView = new SurfaceView(this); this.surfaceView * .setLayoutParams(new ViewGroup.LayoutParams(LayoutParams.FILL_PARENT, * LayoutParams.FILL_PARENT)); * * layout.addView(this.surfaceView); * * this.viewfinderView = new ViewfinderView(this); * this.viewfinderView.setBackgroundColor(0x00000000); * this.viewfinderView.setLayoutParams(new * ViewGroup.LayoutParams(LayoutParams.FILL_PARENT, * LayoutParams.FILL_PARENT)); layout.addView(this.viewfinderView); * * TextView status = new TextView(this); RelativeLayout.LayoutParams * params = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, * LayoutParams.WRAP_CONTENT); * params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM); * params.addRule(RelativeLayout.CENTER_HORIZONTAL); * status.setLayoutParams(params); * status.setBackgroundColor(0x00000000); * status.setTextColor(0xFFFFFFFF); status.setText("请将条码置于取景框内扫描。"); * status.setTextSize(14.0f); * * layout.addView(status); setContentView(layout); */ setContentView(R.layout.activity_capture); surfaceView = (SurfaceView) findViewById(R.id.surfaceview); viewfinderView = (ViewfinderView) findViewById(R.id.viewfinderview); Window window = getWindow(); window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); hasSurface = false; inactivityTimer = new InactivityTimer(this); } @Override protected void onResume() { super.onResume(); if (getRequestedOrientation() != ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); } // CameraManager.init(getApplication()); cameraManager = new CameraManager(getApplication()); viewfinderView.setCameraManager(cameraManager); SurfaceHolder surfaceHolder = surfaceView.getHolder(); if (hasSurface) { initCamera(surfaceHolder); } else { surfaceHolder.addCallback(this); surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } decodeFormats = null; characterSet = null; playBeep = true; AudioManager audioService = (AudioManager) getSystemService(AUDIO_SERVICE); if (audioService.getRingerMode() != AudioManager.RINGER_MODE_NORMAL) { playBeep = false; } initBeepSound(); vibrate = true; } @Override protected void onPause() { super.onPause(); if (handler != null) { handler.quitSynchronously(); handler = null; } cameraManager.closeDriver(); } @Override protected void onDestroy() { inactivityTimer.shutdown(); super.onDestroy(); } private void initCamera(SurfaceHolder surfaceHolder) { try { // CameraManager.get().openDriver(surfaceHolder); cameraManager.openDriver(surfaceHolder); } catch (IOException ioe) { return; } catch (RuntimeException e) { return; } if (handler == null) { handler = new CaptureActivityHandler(this, decodeFormats, characterSet); } } @Override public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) { } @Override public void surfaceCreated(SurfaceHolder holder) { if (!hasSurface) { hasSurface = true; initCamera(holder); } } @Override public void surfaceDestroyed(SurfaceHolder holder) { hasSurface = false; } public CameraManager getCameraManager() { return cameraManager; } public ViewfinderView getViewfinderView() { return viewfinderView; } public Handler getHandler() { return handler; } public void drawViewfinder() { viewfinderView.drawViewfinder(); } public void handleDecode(Result obj, Bitmap barcode) { inactivityTimer.onActivity(); playBeepSoundAndVibrate(); showResult(obj, barcode); } private void showResult(final Result rawResult, Bitmap barcode) { AlertDialog.Builder builder = new AlertDialog.Builder(this); Drawable drawable = new BitmapDrawable(barcode); builder.setIcon(drawable); builder.setTitle("类型:" rawResult.getBarcodeFormat() "\n 结果：" rawResult.getText()); builder.setPositiveButton("确定", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); Intent intent = new Intent(); intent.putExtra("result", rawResult.getText()); setResult(RESULT_OK, intent); finish(); } }); builder.setNegativeButton("重新扫描", new OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { dialog.dismiss(); restartPreviewAfterDelay(0L); } }); builder.setCancelable(false); builder.show(); // Intent intent = new Intent(); // intent.putExtra(QR_RESULT, rawResult.getText()); // setResult(RESULT_OK, intent); // finish(); } public void restartPreviewAfterDelay(long delayMS) { if (handler != null) { handler.sendEmptyMessageDelayed(MessageIDs.restart_preview, delayMS); } } private void initBeepSound() { if (playBeep && mediaPlayer == null) { // The volume on STREAM_SYSTEM is not adjustable, and users found it // too loud, // so we now play on the music stream. setVolumeControlStream(AudioManager.STREAM_MUSIC); mediaPlayer = new MediaPlayer(); mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); mediaPlayer.setOnCompletionListener(beepListener); try { AssetFileDescriptor fileDescriptor = getAssets().openFd("qrbeep.ogg"); this.mediaPlayer.setDataSource(fileDescriptor.getFileDescriptor(), fileDescriptor.getStartOffset(), fileDescriptor.getLength()); this.mediaPlayer.setVolume(0.1F, 0.1F); this.mediaPlayer.prepare(); } catch (IOException e) { this.mediaPlayer = null; } } } private static final long VIBRATE_DURATION = 200L; private void playBeepSoundAndVibrate() { if (playBeep && mediaPlayer != null) { mediaPlayer.start(); } if (vibrate) { Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE); vibrator.vibrate(VIBRATE_DURATION); } } /** * When the beep has finished playing, rewind to queue up another one. */ private final OnCompletionListener beepListener = new OnCompletionListener() { public void onCompletion(MediaPlayer mediaPlayer) { mediaPlayer.seekTo(0); } }; @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { setResult(RESULT_CANCELED); finish(); return true; } else if (keyCode == KeyEvent.KEYCODE_FOCUS || keyCode == KeyEvent.KEYCODE_CAMERA) { return true; } return super.onKeyDown(keyCode, event); }} |
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