Android开发实现模仿360二维码扫描功能实例详解

<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" />

/** * 二维码扫描 * @Project  App_ZXing * @Package  com.android.scan * @author   chenlin * @version  1.0 * @Date    2014年3月6日 */public class MainActivity extends Activity {  private Button mBtnScan;  private Button mBtnBack;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    mBtnBack = (Button) findViewById(R.id.btn_back);    mBtnBack.setVisibility(View.GONE);    mBtnScan = (Button) findViewById(R.id.btn_scan);    mBtnScan.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {        startActivity(new Intent(MainActivity.this, ScanActivity.class));      }    });  }}

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"  xmlns:tools="http://schemas.android.com/tools"  android:layout_width="match_parent"  android:layout_height="match_parent" >  <Button    android:id="@+id/btn_scan"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_centerInParent="true"    android:textColor="@color/white"    android:padding="20dp"    android:background="@drawable/btn_scan_result"    android:text="扫一扫" />  <include      android:layout_width="fill_parent"      android:layout_height="wrap_content"      android:layout_alignParentTop="true"      layout="@layout/activity_scan_title" /></RelativeLayout>

/** * 条形码扫描 * * @Project App_ZXing * @Package com.android.scan * @author chenlin * @version 1.0 * @Date 2014年3月6日 */public class ScanActivity extends Activity implements Callback {  private static final float BEEP_VOLUME = 0.10f;  protected static final String RESULT_TEXT = "result";  protected static final String RESULT_BITMAP = "bitmap";  /** 扫描界面 */  private SurfaceView mSurfaceView;  /** 自定义的View，就是我们看见的拍摄时中间的框框了 */  private ViewfinderView mFindView;  /** 解码处理类，负责调用另外的线程进行解码。 */  private CaptureActivityHandler mHandler;  /** 判断是否创建了SurfaceView */  private boolean hasSurface;  /** decodeFormats 条形码，二维码等的集合 */  private Vector<BarcodeFormat> mDecodeFormats;  /** 字符编码 */  private String characterSet;  /** 定时器 */  private InactivityTimer inactivityTimer;  /** 媒体播放器 */  private MediaPlayer mediaPlayer;  /** 是否播放声音 */  private boolean playBeep;  /** 是否震动 */  private boolean vibrate;  @Override  public void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_scan);    init();  }  /**   * 初始化   */  private void init() {    mSurfaceView = (SurfaceView) findViewById(R.id.preview_view);    mFindView = (ViewfinderView) findViewById(R.id.viewfinder_view);    CameraManager.init(getApplication());    hasSurface = false;    inactivityTimer = new InactivityTimer(this);  }  /**   * 暂停后恢复时处理内容   */  @SuppressWarnings("all")  @Override  protected void onResume() {    super.onResume();    // 先重新获得holder    SurfaceHolder surfaceHolder = mSurfaceView.getHolder();    if (hasSurface) {      initCamera(surfaceHolder);    } else {      surfaceHolder.addCallback(this);      surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);    }    mDecodeFormats = null;    characterSet = null;    playBeep = true;    AudioManager audioService = (AudioManager) getSystemService(AUDIO_SERVICE);    // 如果当前是铃音模式，则继续准备下面的 蜂鸣提示音操作，如果是静音或者震动模式。就不要继续了。因为用户选择了无声的模式，我们就也不要出声了。    if (audioService.getRingerMode() != AudioManager.RINGER_MODE_NORMAL) {      playBeep = false;    }    // 初始化播放声音    initBeepSound();    //播放    vibrate = true;  }  @Override  protected void onPause() {    super.onPause();    if (mHandler != null) {      mHandler.quitSynchronously();      mHandler = null;    }    // 关闭摄像头信息    CameraManager.get().closeDriver();  }  @Override  protected void onDestroy() {    // 关闭定时器    inactivityTimer.shutdown();    super.onDestroy();  }  /**   * 处理扫描结果   *   * @param result   * @param barcode   */  public void handleDecode(Result result, Bitmap barcode) {    // 添加定时器    inactivityTimer.onActivity();    // 响铃和震动    playBeepSoundAndVibrate();    String resultString = result.getText();    if (TextUtils.isEmpty(resultString)) {      ToastUtil.show(this, "扫描失败");      ScanActivity.this.finish();    } else {      //扫描完成后传递结果      Intent resultIntent = new Intent();      resultIntent.setClass(ScanActivity.this, ScanResultActivity.class);      resultIntent.putExtra(RESULT_TEXT, resultString);      ByteArrayOutputStream baos = new ByteArrayOutputStream();      barcode.compress(Bitmap.CompressFormat.PNG, 100, baos);      byte[] bitmapByte = baos.toByteArray();      resultIntent.putExtra(RESULT_BITMAP, bitmapByte);      startActivity(resultIntent);      overridePendingTransition(R.anim.activity_in_from_rigth, R.anim.activity_out_to_scale);      ScanActivity.this.finish();    }  }  private void initCamera(SurfaceHolder surfaceHolder) {    try {      CameraManager.get().openDriver(surfaceHolder);    } catch (IOException ioe) {      return;    } catch (RuntimeException e) {      return;    }    if (mHandler == null) {      mHandler = new CaptureActivityHandler(this, mDecodeFormats, characterSet);    }  }  @Override  public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {  }  /**   * 在视图创建的时候初始化摄像头   */  @Override  public void surfaceCreated(SurfaceHolder holder) {    if (!hasSurface) {      hasSurface = true;      initCamera(holder);    }  }  @Override  public void surfaceDestroyed(SurfaceHolder holder) {    hasSurface = false;  }  public ViewfinderView getViewfinderView() {    return mFindView;  }  public Handler getHandler() {    return mHandler;  }  public void drawViewfinder() {    mFindView.drawViewfinder();  }  /**   * 初始化声音资源   */  private void initBeepSound() {    // 如果要播放声音并且没有播放器时    if (playBeep && mediaPlayer == null) {      // 设置声道流格式为音乐      setVolumeControlStream(AudioManager.STREAM_MUSIC);      mediaPlayer = new MediaPlayer();      mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);      // 设置声音完成后监听      mediaPlayer.setOnCompletionListener(beepListener);      // 设定数据源，并准备播放      AssetFileDescriptor file = getResources().openRawResourceFd(R.raw.beep);      try {        mediaPlayer.setDataSource(file.getFileDescriptor(), file.getStartOffset(), file.getLength());        file.close();        mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME);// 设置音量        mediaPlayer.prepare();      } catch (IOException e) {        mediaPlayer = null;      }    }  }  private static final long VIBRATE_DURATION = 200L;  /**   * 响铃和震动   */  private void playBeepSoundAndVibrate() {    if (playBeep && mediaPlayer != null) {      mediaPlayer.start();    }    if (vibrate) {      Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);      // 震动一次      vibrator.vibrate(VIBRATE_DURATION);      // 第一个参数，指代一个震动的频率数组。每两个为一组，每组的第一个为等待时间，第二个为震动时间。      // 比如 [2000,500,100,400],会先等待2000毫秒，震动500，再等待100，震动400      // 第二个参数，repest指代从 第几个索引（第一个数组参数） 的位置开始循环震动。      // 会一直保持循环，我们需要用 vibrator.cancel()主动终止      // vibrator.vibrate(new long[]{300,500},0);    }  }  /**   * 注册事件。当播放完毕一次后，重新指向流文件的开头，以准备下次播放。   */  private final MediaPlayer.OnCompletionListener beepListener = new MediaPlayer.OnCompletionListener() {    public void onCompletion(MediaPlayer mediaPlayer) {      mediaPlayer.seekTo(0);    }  };}

<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"  android:layout_width="match_parent"  android:layout_height="match_parent" >  <RelativeLayout    android:layout_width="match_parent"    android:layout_height="match_parent" >    <SurfaceView      android:id="@+id/preview_view"      android:layout_width="fill_parent"      android:layout_height="fill_parent"      android:layout_gravity="center" />    <com.android.scan.view.ViewfinderView      android:id="@+id/viewfinder_view"      android:layout_width="wrap_content"      android:layout_height="wrap_content" />    <include      android:layout_width="fill_parent"      android:layout_height="wrap_content"      android:layout_alignParentTop="true"      layout="@layout/activity_scan_title" />  </RelativeLayout></FrameLayout>

/** * * @Project App_ZXing * @Package com.android.scan * @author chenlin * @version 1.0 * @Date 2014年3月6日 * @Note TODO */public class ScanResultActivity extends Activity {  private EditText mEtScan;  private Button mBtnBack;  private Button mBtnCopy;  private ImageView mImageView;  @Override  protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_scan_result);    initViews();    init();  }  private void init() {    final String result = getIntent().getStringExtra(ScanActivity.RESULT_TEXT);    mEtScan.setText(result);    final ClipboardManager cm = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);    mBtnBack.setOnClickListener(new View.OnClickListener() {      @Override      public void onClick(View v) {        ScanResultActivity.this.finish();      }    });    mBtnCopy.setOnClickListener(new OnClickListener() {      @Override      public void onClick(View v) {        if (result!=null) {          ClipData myClip = ClipData.newPlainText("text", result);          cm.setPrimaryClip(myClip);        }      }    });    //设置图片信息    byte[] imgByte = getIntent().getByteArrayExtra(ScanActivity.RESULT_BITMAP);    if (imgByte != null) {      Drawable drawable = BitmapUtil.byte2Drawable(imgByte);      if (drawable != null) {        mImageView.setImageDrawable(drawable);      }    }  }  // public void paste(View view){  // ClipData abc = myClipboard.getPrimaryClip();  // ClipData.Item item = abc.getItemAt(0);  // String text = item.getText().toString();  // pasteField.setText(text);  // Toast.makeText(getApplicationContext(), "Text Pasted",  // Toast.LENGTH_SHORT).show();  // }  private void initViews() {    mEtScan = (EditText) findViewById(R.id.et_scan_result);    mBtnBack = (Button) findViewById(R.id.btn_back);    mBtnCopy = (Button) findViewById(R.id.btn_copy);  }}