Android Camera结合Zxing优化扫码
先上个图：
由于之前集成的zxing扫塑料上面的码不太好扫，决定优化。Zxing的解码我们优化不了了，经过测试，是因为亮度不够，所以最终选择在灯光和放大焦距完成了最终的优化。
设置模式只需要几行代码即可：
//得到Camera对象
Camera camera = CameraManager.get().getCamera();
Camera.Parameters parameters = camera.getParameters();
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
//设置给相机
camera.setParameters(parameters);我们来看看有哪些模式可以设置，基本包含了所有的设置：
//1、设置相机滤镜模式
public synchronized void changeEffect(final Button btn){
PopupMenu pop = new PopupMenu(context, btn);
pop.getMenuInflater().inflate(R.menu.menu, pop.getMenu());
pop.show();
pop.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
int i = item.getItemId();
if (i == R.id.effect_none) {
parameters.setColorEffect(Camera.Parameters.EFFECT_NONE);
}
else if (i == R.id.effect_mono) {
parameters.setColorEffect(Camera.Parameters.EFFECT_MONO);
}
else if (i == R.id.effect_negative) {
parameters.setColorEffect(Camera.Parameters.EFFECT_NEGATIVE);
}
else if (i == R.id.effect_solarize) {
parameters.setColorEffect(Camera.Parameters.EFFECT_SOLARIZE);
}
else if (i == R.id.effect_sepia) {
parameters.setColorEffect(Camera.Parameters.EFFECT_SEPIA);
}
else if (i == R.id.effect_posterize) {
parameters.setColorEffect(Camera.Parameters.EFFECT_POSTERIZE);
}
else if (i == R.id.effect_whiteboard) {
parameters.setColorEffect(Camera.Parameters.EFFECT_WHITEBOARD);
}
else if (i == R.id.effect_blackboard) {
parameters.setColorEffect(Camera.Parameters.EFFECT_BLACKBOARD);
}
else if (i == R.id.effect_aqua) {
parameters.setColorEffect(Camera.Parameters.EFFECT_AQUA);
}
btn.setText(item.getTitle());
setParameters(camera, parameters);
return false;
}
});
}
//2、设置相机对焦模式
public synchronized void changeFocus(final Button btn){
PopupMenu pop = new PopupMenu(context, btn);
pop.getMenuInflater().inflate(R.menu.menu_focus, pop.getMenu());
pop.show();
pop.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
int i = item.getItemId();
if (i == R.id.focus_mode_auto) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_AUTO);
}
else if (i == R.id.focus_mode_infinity) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_INFINITY);
}
else if (i == R.id.focus_mode_macro) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_MACRO);
}
else if (i == R.id.focus_mode_fixed) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_FIXED);
}
else if (i == R.id.focus_mode_edof) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_EDOF);
}
else if (i == R.id.focus_mode_continuous_video) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
}
else if (i == R.id.focus_mode_continuous_picture) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
}
btn.setText(item.getTitle());
setParameters(camera, parameters);
return false;
}
});
}
//3、设置相机闪光灯模式
public synchronized void changeFlash(final Button btn){
PopupMenu pop = new PopupMenu(context, btn);
pop.getMenuInflater().inflate(R.menu.menu_flash, pop.getMenu());
pop.show();
pop.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
int i = item.getItemId();
if (i == R.id.flash_mode_auto) {
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_AUTO);
}
else if (i == R.id.flash_mode_on) {
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_ON);
}
else if (i == R.id.flash_mode_off) {
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
}
else if (i == R.id.flash_mode_red_eye) {
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_RED_EYE);
}
else if (i == R.id.flash_mode_torch) {
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
}
btn.setText(item.getTitle());
setParameters(camera, parameters);
return false;
}
});
}
//4、设置相机场景模式
public synchronized void changeScene(final Button btn){
final PopupMenu pop = new PopupMenu(context, btn);
pop.getMenuInflater().inflate(R.menu.menu_scene, pop.getMenu());
pop.show();
pop.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
int i = item.getItemId();
if (i == R.id.scene_mode_action) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_ACTION);
}
else if (i == R.id.scene_mode_auto) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_AUTO);
}
else if (i == R.id.scene_mode_barcode) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_BARCODE);
}
else if (i == R.id.scene_mode_beach) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_BEACH);
}
else if (i == R.id.scene_mode_candlelight) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_CANDLELIGHT);
}
else if (i == R.id.scene_mode_fireworks) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_FIREWORKS);
}
else if (i == R.id.scene_mode_hdr) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_HDR);
}
else if (i == R.id.scene_mode_landscape) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_LANDSCAPE);
}
else if (i == R.id.scene_mode_night) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_NIGHT);
}
else if (i == R.id.scene_mode_night_portrait) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_NIGHT_PORTRAIT);
}
else if (i == R.id.scene_mode_party) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_PARTY);
}
else if (i == R.id.scene_mode_portrait) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_PORTRAIT);
}
else if (i == R.id.scene_mode_snow) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_SNOW);
}
else if (i == R.id.scene_mode_sports) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_SPORTS);
}
else if (i == R.id.scene_mode_steadyphoto) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_STEADYPHOTO);
}
else if (i == R.id.scene_mode_sunset) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_SUNSET);
}
else if (i == R.id.scene_mode_theatre) {
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_THEATRE);
}
btn.setText(item.getTitle());
setParameters(camera, parameters);
return false;
}
});
}
//4、设置支持的防牛顿环设置
public synchronized void changeAntibanding(final Button btn){
PopupMenu pop = new PopupMenu(context, btn);
pop.getMenuInflater().inflate(R.menu.menu_antibanding, pop.getMenu());
pop.show();
pop.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
int i = item.getItemId();
if (i == R.id.antibanding_auto) {
parameters.setAntibanding(Camera.Parameters.ANTIBANDING_AUTO);
}
else if (i == R.id.antibanding_off) {
parameters.setAntibanding(Camera.Parameters.ANTIBANDING_OFF);
}
else if (i == R.id.antibanding_50hz) {
parameters.setAntibanding(Camera.Parameters.ANTIBANDING_50HZ);
}
else if (i == R.id.antibanding_60hz) {
parameters.setAntibanding(Camera.Parameters.ANTIBANDING_60HZ);
}
btn.setText(item.getTitle());
setParameters(camera, parameters);
return false;
}
});
}
//5、设置白平衡
public synchronized void changeWhite(final Button btn){
PopupMenu pop = new PopupMenu(context, btn);
pop.getMenuInflater().inflate(R.menu.menu_white, pop.getMenu());
pop.show();
pop.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
int i = item.getItemId();
if (i == R.id.white_balance_auto) {
parameters.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_AUTO);
}
else if (i == R.id.white_balance_cloudy_daylight) {
parameters.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_CLOUDY_DAYLIGHT);
}
else if (i == R.id.white_balance_daylight) {
parameters.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_DAYLIGHT);
}
else if (i == R.id.white_balance_fluorescent) {
parameters.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_FLUORESCENT);
}
else if (i == R.id.white_balance_incandescent) {
parameters.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_INCANDESCENT);
}
else if (i == R.id.white_balance_shade) {
parameters.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_SHADE);
}
else if (i == R.id.white_balance_twilight) {
parameters.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_TWILIGHT);
}
else if (i == R.id.white_balance_warm_fluorescent) {
parameters.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_WARM_FLUORESCENT);
}
btn.setText(item.getTitle());
setParameters(camera, parameters);
return false;
}
});
}
//6、设置相机放大（焦距）
public synchronized void changeZoom(final Button btn){
PopupMenu pop = new PopupMenu(context, btn);
pop.getMenuInflater().inflate(R.menu.menu_zoom, pop.getMenu());
pop.show();
pop.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
int i = item.getItemId();
if (i == R.id.zoom20) {
parameters.setZoom(20);
}
else if (i == R.id.zoom40) {
parameters.setZoom(40);
}
else if (i == R.id.zoom60) {
parameters.setZoom(60);
}
else if (i == R.id.zoom78) {
parameters.setZoom(78);
}
else if (i == R.id.zoom2) {
parameters.setZoom(2);
}
btn.setText(item.getTitle());
setParameters(camera, parameters);
return false;
}
});
}
public static synchronized void setParameters(Camera camera, Camera.Parameters parameters){
camera.setParameters(parameters);
}具体参数的意思请参照：
http://blog.csdn.net/aiqing0119/article/details/27680137
下面说说我的问题是怎么解决的：
经常测试，发现设置parameters.setZoom(20);再加上闪光灯比较好扫，但是我发现经常会扫着扫着就模糊了，所以决定每秒设置一次焦点对焦模式，发现有所改善。
代码如下：
//----------------------------设置最佳默认扫码配置-------------------------------------------------
private void setDefaultSetting() {
parameters = camera.getParameters();
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
parameters.setZoom(20);
setCameras();
setFocus();
}
private synchronized void setCameras() {
camera.setParameters(parameters);
}
private void setFocus() {
focusHandler.postDelayed(runnable, 1000);
}
final Handler focusHandler = new Handler();
Runnable runnable = new Runnable() {
@Override
public void run() {
//每隔1秒对一次焦点
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
setCameras();
focusHandler.postDelayed(this, 1000);
}
};
private void removeTask() {
if (null != focusHandler && null != runnable) {
focusHandler.removeCallbacks(runnable);
}
}附加一个连续扫码的功能：
public void handleDecode(Result result, Bitmap barcode) {
inactivityTimer.onActivity();
playBeepSoundAndVibrate();
if (result == null || TextUtils.isEmpty(result.getText())) {
if (analyzeCallback != null) {
analyzeCallback.onAnalyzeFailed();
}
} else {
if (analyzeCallback != null) {
analyzeCallback.onAnalyzeSuccess(barcode, result.getText());
}
}
continuePreview();
}
//连续扫码
private void continuePreview(){
SurfaceHolder surfaceHolder = surfaceView.getHolder();
initCamera(surfaceHolder);
if (handler != null){
handler.restartPreviewAndDecode();
}
}
最终提升了一定的扫码率，不过最终确定是码本身就有一些问题。
另外，在这个文章里面看到可以修改对比度、亮度、怪我技术不足，没能设置，有大神看到可否指导一二。
http://blog.csdn.net/fireness/article/details/49684493
public String getEdgeMode()//获取锐度模式
public void setEdgeMode(String value)//设置锐度模式
public List<String> getSupportedEdgeMode()//获取支持的所有锐度模式
public String getHueMode()//色度
public void setHueMode(String value)
public List<String> getSupportedHueMode()
public String getSaturationMode()//饱和度
public void setSaturationMode(String value)
public List<String> getSupportedSaturationMode()
public String getBrightnessMode()//亮度
public void setBrightnessMode(String value)
public List<String> getSupportedBrightnessMode()
public String getContrastMode()//对比度
public void setContrastMode(String value)
public List<String> getSupportedContrastMode()引用zxing源码：
https://github.com/yipianfengye/android-zxingLibrary
本项目源码：
https://github.com/MrXiong/android_zxingLibrary_zx