CaptureActivity.java

package com.zxing.activity;

import java.io.IOException;
import java.util.Vector;

import android.app.Activity;
import android.content.Intent;
import android.content.res.AssetFileDescriptor;
import android.graphics.Bitmap;
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.SurfaceHolder;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

import com.baidu.mobstat.StatService;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.Result;
import com.lidroid.xutils.ViewUtils;
import com.lidroid.xutils.view.annotation.ViewInject;
import com.lidroid.xutils.view.annotation.event.OnClick;
import com.partynetwork.dataprovider.util.T;
import com.partynetwork.dataprovider.util.Util;
import com.partynetwork.iparty.R;
import com.partynetwork.iparty.app.common.UIHelper;
import com.partynetwork.iparty.scanqr.CaptureResultActivity;
import com.partynetwork.iparty.site.SiteUserInfoQRActivity;
import com.partynetwork.myview.mytoast.MenuBottomPop;
import com.zxing.camera.CameraManager;
import com.zxing.decoding.CaptureActivityHandler;
import com.zxing.decoding.InactivityTimer;
import com.zxing.view.ViewfinderView;

/**
 * Initial the camera
 */
public class CaptureActivity extends Activity implements Callback {

	public static final String RESULT_KEY = "result";
	private CaptureActivityHandler handler;

	@ViewInject(R.id.viewfinder_view)
	private ViewfinderView viewfinderView;
	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;

	@ViewInject(R.id.btn_cancel_scan)
	private Button cancelScanButton;

	/**
	 * 底部的弹窗
	 */
	private MenuBottomPop menuBottonPop;

	/*
	 * 更多功能列表
	 */
	private String moreArray[] = new String[] { "我的参加凭证", "我的二维码名片" };

	/**
	 * 
	 * 覆盖方法
	 * 
	 * @see android.app.Activity#onCreate(android.os.Bundle)
	 */
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.camera);
		ViewUtils.inject(this);
		CameraManager.init(getApplication());
		init();
	}

	/**
	 * 初始化
	 */
	private void init() {
		hasSurface = false;
		inactivityTimer = new InactivityTimer(this);
		menuBottonPop = new MenuBottomPop(this, moreArray, clickListener);
	}

	/**
	 * 事件监听
	 * 
	 * @param view
	 */
	@OnClick({ R.id.menu_head_left, R.id.menu_head_right, R.id.btn_cancel_scan })
	public void onClick(View view) {
		switch (view.getId()) {
		case R.id.menu_head_left:
			finish();
			break;
		case R.id.menu_head_right:
			menuBottonPop.showAtLocation(cancelScanButton);
			break;
		case R.id.btn_cancel_scan:
			finish();
			break;
		default:
			break;
		}
	}

	/**
	 * 底部弹窗的监听
	 */
	private OnClickListener clickListener = new OnClickListener() {

		public void onClick(View v) {
			if (v.getTag().equals(moreArray[0])) {

			} else if (v.getTag().equals(moreArray[1])) {
				UIHelper.showUserQR(CaptureActivity.this);
			}
			menuBottonPop.dismiss();
		}
	};

	protected void onResume() {
		super.onResume();
		SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view);
		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;

		// quit the scan view
		cancelScanButton.setOnClickListener(new OnClickListener() {

			public void onClick(View v) {
				CaptureActivity.this.finish();
			}
		});

		// 百度统计
		StatService.onResume(this);
	}

	protected void onPause() {
		super.onPause();
		if (handler != null) {
			handler.quitSynchronously();
			handler = null;
		}
		CameraManager.get().closeDriver();

		StatService.onPause(this);
	}

	protected void onDestroy() {
		inactivityTimer.shutdown();
		super.onDestroy();
	}

	/**
	 * Handler scan result
	 * 
	 * @param result
	 * @param barcode
	 */
	public void handleDecode(Result result, Bitmap barcode) {
		inactivityTimer.onActivity();
		playBeepSoundAndVibrate();
		String resultString = result.getText();
		if (resultString.equals("")) {
			T.showTips(this, R.drawable.tips_error, "扫描失败");
		} else {
			UIHelper.showCaptureResultPage(this, resultString);
		}
		CaptureActivity.this.finish();
	}

	private void initCamera(SurfaceHolder surfaceHolder) {
		try {
			CameraManager.get().openDriver(surfaceHolder);
		} catch (IOException ioe) {
			return;
		} catch (RuntimeException e) {
			return;
		}
		if (handler == null) {
			handler = new CaptureActivityHandler(this, decodeFormats,
					characterSet);
		}
	}

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

	}

	public void surfaceCreated(SurfaceHolder holder) {
		if (!hasSurface) {
			hasSurface = true;
			initCamera(holder);
		}

	}

	public void surfaceDestroyed(SurfaceHolder holder) {
		hasSurface = false;

	}

	public ViewfinderView getViewfinderView() {
		return viewfinderView;
	}

	public Handler getHandler() {
		return handler;
	}

	public void drawViewfinder() {
		viewfinderView.drawViewfinder();

	}

	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);

			AssetFileDescriptor file = getResources().openRawResourceFd(
					R.raw.beep);
			try {
				mediaPlayer.setDataSource(file.getFileDescriptor(),
						file.getStartOffset(), file.getLength());
				file.close();
				mediaPlayer.setVolume(BEEP_VOLUME, BEEP_VOLUME);
				mediaPlayer.prepare();
			} catch (IOException e) {
				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);
		}
	};

}