很多朋友没有做过二维码扫描方面的可能会觉得比较复杂，先定义就是不好下手，但是自己仔细写一下其实也好，毕竟网上类似二维码扫描的特别多，好人也很多。下面的我就来基于zbar集成的一个二维码扫描。
首先就是扫面的布局的绘制，这里我就简单说明一下，里面就一个扫描的view,然后就加了一个闪光灯的按钮，点击可以打开闪光灯的，然后就是基本按钮了，我的二维码。这里可以点击去自己想去的页面，这里呢我就没有写了。再一个就是返回，现看看xml代码先
android:layout_width="fill_parent"
android:layout_height="fill_parent">
android:id="@+id/preview_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"/>
android:layout_width="fill_parent"
android:layout_height="fill_parent">
android:id="@+id/viewfinder_view"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#00000000"/>
android:id="@+id/rl_title"
android:layout_width="fill_parent"
android:layout_height="42dp"
android:layout_alignParentTop="true"
android:background="#000000">
android:id="@+id/iv_title_back"
android:layout_width="64dp"
android:layout_height="44dp"
android:layout_centerVertical="true"
android:background="@drawable/top_backup"
android:contentDescription="@null"
/>
android:id="@+id/tv_title_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:gravity="center"
android:singleLine="true"
android:text="二维码扫描"
android:textColor="#ffffff"
android:textSize="18sp"/>
android:id="@+id/iv_flashlight"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_alignParentRight="true"
android:layout_marginRight="10dp"
android:layout_centerVertical="true"
android:src="@drawable/icon_light"/>
android:id="@+id/my_qr_code"
android:layout_width="wrap_content"
android:layout_height="54dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:layout_marginBottom="10dp">
android:id="@+id/album"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_centerHorizontal="true"
android:src="@drawable/icon_erweima"/>
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/album"
android:layout_centerHorizontal="true"
android:text="我的二维码"
android:textColor="#fff"
android:textSize="12sp"/>
接下来就是对于那个xml页面的基本操作，比如声音啊，然后recorder的处理，扫描data的分析和处理等，最重要的就是返回个自己的页面的操作。
[java]view plaincopy
packagecom.leo.zbardemo.zbar.client;
importandroid.content.BroadcastReceiver;
importandroid.content.Context;
importandroid.content.Intent;
importandroid.content.IntentFilter;
importandroid.content.res.AssetFileDescriptor;
importandroid.media.AudioManager;
importandroid.media.MediaPlayer;
importandroid.media.MediaPlayer.OnCompletionListener;
importandroid.os.Bundle;
importandroid.os.Handler;
importandroid.os.Message;
importandroid.os.Vibrator;
importandroid.support.v7.app.AppCompatActivity;
importandroid.util.Log;
importandroid.view.SurfaceHolder;
importandroid.view.SurfaceView;
importandroid.view.View;
importandroid.view.Window;
importandroid.view.WindowManager;
importandroid.widget.ImageView;
importandroid.widget.RelativeLayout;
importandroid.widget.Toast;
importcom.leo.zbardemo.R;
importcom.leo.zbardemo.zbar.camera.CameraManager;
importcom.leo.zbardemo.zbar.decode.CaptureActivityHandler;
importcom.leo.zbardemo.zbar.decode.InactivityTimer;
importcom.leo.zbardemo.zbar.view.ViewfinderView;
importjava.io.IOException;
publicclassCaptureActivityextendsAppCompatActivityimplementsSurfaceHolder.Callback, View.OnClickListener {
privateInactivityTimer inactivityTimer;
privateCaptureActivityHandler handler;
privateMediaPlayer mediaPlayer;
privatebooleanplayBeep;
privatebooleanvibrate;
privatebooleanflag =true;
privatebooleanhasSurface =false;
privateViewfinderView viewfinderView;
privateImageView iv_title_back;
privateImageView iv_flashlight;
privateRelativeLayout my_qr_code;
privateScreenOffReceiver mScreenOffReceiver =newScreenOffReceiver();
;
privatestaticfinalfloatBEEP_VOLUME =0.20f;
privatestaticfinallongVIBRATE_DURATION = 200L;
privatefinalOnCompletionListener beepListener =newOnCompletionListener() {
publicvoidonCompletion(MediaPlayer mediaPlayer) {
mediaPlayer.seekTo(0);
}
};
privatevoidinitBeepSound() {
if(playBeep && mediaPlayer ==null) {
setVolumeControlStream(AudioManager.STREAM_MUSIC);
mediaPlayer =newMediaPlayer();
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;
}
}
}
privatevoidinitCamera(SurfaceHolder surfaceHolder) {
try{
CameraManager.get().openDriver(surfaceHolder);
}catch(IOException ioe) {
return;
}catch(RuntimeException e) {
return;
}
if(handler ==null) {
handler =newCaptureActivityHandler(this);
}
}
privatevoidplayBeepSoundAndVibrate() {
if(playBeep && mediaPlayer !=null) {
mediaPlayer.start();
}
if(vibrate) {
Vibrator vibrator = (Vibrator) getSystemService(VIBRATOR_SERVICE);
vibrator.vibrate(VIBRATE_DURATION);
}
}
publicViewfinderView getViewfinderView() {
returnviewfinderView;
}
publicHandler getHandler() {
returnhandler;
}
publicvoiddrawViewfinder() {
viewfinderView.drawViewfinder();
}
publicvoidhandleDecode(String result) {
inactivityTimer.onActivity();
playBeepSoundAndVibrate();
Intent intent =newIntent();
intent.putExtra("result", result);
Message message = Message.obtain(getHandler(), R.id.return_scan_result, intent);
message.sendToTarget();
}
publicvoidlight() {
if(this.flag) {
CameraManager.get().openLight();
this.flag =false;
this.iv_flashlight.setImageDrawable(getResources().getDrawable(R.drawable.icon_light_hover));
return;
}
CameraManager.get().offLight();
this.flag =true;
this.iv_flashlight.setImageDrawable(getResources().getDrawable(R.drawable.icon_light));
}
@Override
publicvoidonCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Window window = getWindow();
window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setContentView(R.layout.capture);
CameraManager.init(getApplication());
this.viewfinderView = (ViewfinderView) findViewById(R.id.viewfinder_view);
this.iv_flashlight = (ImageView) findViewById(R.id.iv_flashlight);
this.my_qr_code = (RelativeLayout) findViewById(R.id.my_qr_code);
this.iv_flashlight.setOnClickListener(this);
this.iv_title_back = (ImageView) findViewById(R.id.iv_title_back);
this.iv_title_back.setOnClickListener(this);
this.my_qr_code.setOnClickListener(this);
this.hasSurface =false;
this.inactivityTimer =newInactivityTimer(this);
IntentFilter intentFilter =newIntentFilter();
intentFilter.addAction(Intent.ACTION_SCREEN_OFF);
registerReceiver(this.mScreenOffReceiver, intentFilter);
}
@Override
protectedvoidonPause() {
if(handler !=null) {
handler.quitSynchronously();
handler =null;
}
CameraManager.get().offLight();
inactivityTimer.onPause();
CameraManager.get().closeDriver();
if(!hasSurface) {
SurfaceView surfaceView = (SurfaceView) findViewById(R.id.preview_view);
SurfaceHolder surfaceHolder = surfaceView.getHolder();
surfaceHolder.removeCallback(this);
}
super.onPause();
}
@SuppressWarnings("deprecation")
@Override
protectedvoidonResume() {
super.onResume();
handler =null;
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);
}
playBeep =true;
AudioManager audioService = (AudioManager) getSystemService(AUDIO_SERVICE);
if(audioService.getRingerMode() != AudioManager.RINGER_MODE_NORMAL) {
playBeep =false;
}
initBeepSound();
inactivityTimer.onResume();
vibrate =true;
}
@Override
protectedvoidonDestroy() {
inactivityTimer.shutdown();
unregisterReceiver(this.mScreenOffReceiver);
super.onDestroy();
}
@Override
publicvoidsurfaceChanged(SurfaceHolder holder,intformat,intwidth,intheight) {
}
@Override
publicvoidsurfaceCreated(SurfaceHolder holder) {
if(!hasSurface) {
hasSurface =true;
initCamera(holder);
}
}
@Override
publicvoidsurfaceDestroyed(SurfaceHolder holder) {
hasSurface =false;
}
@Override
publicvoidonClick(View v) {
switch(v.getId()) {
caseR.id.iv_flashlight:
light();
break;
caseR.id.iv_title_back:
this.finish();
break;
caseR.id.my_qr_code:
Toast.makeText(this,"我的二维码", Toast.LENGTH_SHORT).show();
break;
}
}
privateclassScreenOffReceiverextendsBroadcastReceiver {
@Override
publicvoidonReceive(Context arg0, Intent arg1) {
Log.d("CaptureActivity","CaptureActivity receive screen off command ++");
CaptureActivity.this.finish();
}
}
}
我采用的是StartActivityForResult的跳转，然后在OnActivityResult里面的获取数据和分析数据，也就是扫描得到的东西。
@Override
publicvoidonClick(View view) {
switch(view.getId()){
caseR.id.tv_click:
Intent intent =newIntent(MainActivity.this, CaptureActivity.class);
startActivityForResult(intent,1234);
break;
}
}
@Override
publicvoidonActivityResult(intrequestCode,intresultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if(requestCode ==1234&& resultCode == RESULT_OK) {
Bundle bundle = data.getExtras();
//显示扫描到的内容
String content = bundle.getString("result");
Toast.makeText(this, content, Toast.LENGTH_SHORT).show();
}
}
剩下的也就是jar包和so库了，so库建议放在armeabi-v7a这个文件夹下面。
然后附在demo一个：
http://download.csdn.NET/detail/greatdaocaoren/9903754
欢迎下载。
csdn项目地址：http://blog.csdn.net/greatdaocaoren/article/details/75370540
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