package com.kaixin.android.activity;
import java.io.IOException;
import java.util.Vector;
import android.content.res.AssetFileDescriptor;
import android.graphics.Bitmap;
import android.media.AudioManager;
import android.media.MediaPlayer;
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 android.widget.FrameLayout;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.google.zxing.BarcodeFormat;
import com.google.zxing.Result;
import com.kaixin.android.KXActivity;
import com.kaixin.android.R;
import com.kaixin.android.qrcode.CameraManager;
import com.kaixin.android.qrcode.CaptureActivityHandler;
import com.kaixin.android.qrcode.InactivityTimer;
import com.kaixin.android.ui.base.ViewfinderView;
import com.kaixin.android.utils.Utils;
/**
* 扫描二维码类
*
* @author gyz
*
*/
public class CaptureActivity extends KXActivity implements Callback {
private FrameLayout mScanningLayout;
private RelativeLayout mInformationLayout;
private ViewfinderView viewfinderView;
private ImageView mImageView;
private TextView mTime;
private TextView mContent;
private Button mAgain;
private CaptureActivityHandler handler;
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;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.capture_activity);
// 初始化 CameraManager
CameraManager.init(getApplication());
mScanningLayout = (FrameLayout) findViewById(R.id.capture_scanning_layout);
mInformationLayout = (RelativeLayout) findViewById(R.id.capture_information_layout);
viewfinderView = (ViewfinderView) findViewById(R.id.capture_viewfinder_view);
mImageView = (ImageView) findViewById(R.id.capture_image);
mTime = (TextView) findViewById(R.id.capture_time);
mContent = (TextView) findViewById(R.id.capture_content);
mAgain = (Button) findViewById(R.id.capture_again);
mAgain.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
stop();
start();
}
});
hasSurface = false;
inactivityTimer = new InactivityTimer(this);
}
protected void onResume() {
super.onResume();
start();
}
@Override
protected void onPause() {
super.onPause();
stop();
}
@Override
protected void onDestroy() {
inactivityTimer.shutdown();
super.onDestroy();
}
private void start() {
mScanningLayout.setVisibility(View.VISIBLE);
mInformationLayout.setVisibility(View.GONE);
SurfaceView surfaceView = (SurfaceView) findViewById(R.id.capture_preview);
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;
}
private void stop() {
if (handler != null) {
handler.quitSynchronously();
handler = null;
}
CameraManager.get().closeDriver();
}
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);
}
}
@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 ViewfinderView getViewfinderView() {
return viewfinderView;
}
public Handler getHandler() {
return handler;
}
public void drawViewfinder() {
viewfinderView.drawViewfinder();
}
public void handleDecode(Result obj, Bitmap barcode) {
mScanningLayout.setVisibility(View.GONE);
mInformationLayout.setVisibility(View.VISIBLE);
inactivityTimer.onActivity();
playBeepSoundAndVibrate();
mTime.setText(Utils.formatDate(this, obj.getTimestamp()));
mContent.setText(obj.getText());
mImageView.setImageBitmap(barcode);
Toast.makeText(CaptureActivity.this, "请扫描OOXX提供的二维码,以获取正确的地理位置信息",
Toast.LENGTH_SHORT).show();
}
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);
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);
}
};
}