android4.2 camera icon

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Android4.2 默认没有camera icon，解决办法：

由一下log 推出：

I/DisableCameraReceiver( 2989): noback camera

I/DisableCameraReceiver( 2989):disable all camera activities

Packages/apps/Camera/src/com/android/camera/DisableCameraReceiver.java

public class DisableCameraReceiverextends BroadcastReceiver {

private static final String TAG = "DisableCameraReceiver";

private static final boolean CHECK_BACK_CAMERA_ONLY = true;

private static final String ACTIVITIES[] = {

"com.android.camera.CameraLauncher",

};

@Override

public void onReceive(Context context, Intent intent) {

// Disable camera-related activities if there is no camera.

boolean needCameraActivity =CHECK_BACK_CAMERA_ONLY ? hasBackCamera() : hasCamera();

////

Log.i(TAG,"++++sam debug needCameraActivity: " + needCameraActivity);

////needCameraActivity = true;

////sam debug 0425

if (!needCameraActivity) {

Log.i(TAG, "disable all cameraactivities");

for (int i = 0; i <ACTIVITIES.length; i++) {

disableComponent(context,ACTIVITIES[i]);

}

// Disable this receiver so it won't run again.

disableComponent(context,"com.android.camera.DisableCameraReceiver");

}

private boolean hasCamera() {

int n =android.hardware.Camera.getNumberOfCameras();

Log.i(TAG, "number of camera: " + n);

return (n > 0);

}

private boolean hasBackCamera() {

int n = android.hardware.Camera.getNumberOfCameras();

CameraInfo info = new CameraInfo();

for (int i = 0; i < n; i++) {

android.hardware.Camera.getCameraInfo(i,info);

if (info.facing ==CameraInfo.CAMERA_FACING_BACK) {

Log.i(TAG, "back camera found:" + i);

return true;

}

Log.i(TAG, "no back camera");

return false;

}

private void disableComponent(Context context, String klass) {

ComponentName name = new ComponentName(context, klass);

PackageManager pm = context.getPackageManager();

Log.d(TAG, "++++sam debug 111111111111111name :" + name.getPackageName());

Log.d(TAG, "++++sam debug 111111111111111name1 :" + PackageManager.COMPONENT_ENABLED_STATE_DISABLED);

Log.d(TAG, "++++sam debug 111111111111111name2 :" + PackageManager.DONT_KILL_APP);

// We need the DONT_KILL_APP flag, otherwise we will be killed

// immediately because we are in the same app.

pm.setComponentEnabledSetting(name,

PackageManager.COMPONENT_ENABLED_STATE_DISABLED,

PackageManager.DONT_KILL_APP);

}

2:frameworks/av/services/camera/libcameraservice/CameraService.cpp

void CameraService::onFirstRef()

{

BnCameraService::onFirstRef();

if (hw_get_module(CAMERA_HARDWARE_MODULE_ID,

(const hw_module_t**)&mModule) < 0) {

ALOGE("Could not load camera HAL module");

mNumberOfCameras = 0;

}

else {

mNumberOfCameras= mModule->get_number_of_cameras();

if (mNumberOfCameras > MAX_CAMERAS){

ALOGE("Number of cameras(%d)> MAX_CAMERAS(%d).",

mNumberOfCameras,MAX_CAMERAS);

mNumberOfCameras = MAX_CAMERAS;

}

for (int i = 0; i < mNumberOfCameras; i++) {

setCameraFree(i);

}

CameraService::~CameraService() {

for (int i = 0; i < mNumberOfCameras; i++) {

if (mBusy[i]) {

ALOGE("camera %d is still inuse in destructor!", i);

}

gCameraService = NULL;

}

int32_tCameraService::getNumberOfCameras() {

return mNumberOfCameras;

}

3:hardware/imx/mx6/libcamera2/CameraModule.cpp

camera_module_t HAL_MODULE_INFO_SYM ={

common: {

tag: HARDWARE_MODULE_TAG,

module_api_version: CAMERA_MODULE_API_VERSION_2_0,

hal_api_version: HARDWARE_HAL_API_VERSION,

id: CAMERA_HARDWARE_MODULE_ID,

name: "Freescale CameraHal Module",

author: "Freescale",

methods: &camera_module_methods,

dso: NULL, /* removecompilation warnings */

reserved: { 0 }, /* remove compilation warnings */

get_number_of_cameras: camera_get_number_of_cameras,

get_camera_info: camera_get_camera_info,

};

int camera_get_number_of_cameras()

{

int back_orient = 0, front_orient= 0;

if (gCameraNum == 0) {

char name_back[CAMERA_SENSOR_LENGTH];

char name_front[CAMERA_SENSOR_LENGTH];

GetCameraPropery(name_back,

name_front,

&back_orient,

&front_orient);

if (name_back[0] != DEFAULT_ERROR_NAME) {

char *pCameraName =strtok(name_back, ",");

while (pCameraName != NULL) {

ALOGI("Checking the camera%s", pCameraName);

strncpy(sCameraInfo[gCameraNum].name,

pCameraName,

CAMERA_SENSOR_LENGTH);

sCameraInfo[gCameraNum].facing = CAMERA_FACING_BACK;

sCameraInfo[gCameraNum].orientation= back_orient;

memset(sCameraInfo[gCameraNum].devPath,0, CAMAERA_FILENAME_LENGTH);

if(GetDevPath(sCameraInfo[gCameraNum].name,

sCameraInfo[gCameraNum].devPath,

CAMAERA_FILENAME_LENGTH)== -1){

pCameraName = strtok(NULL,",");

continue;

}

ALOGI("Camera ID %d: name%s, Facing %d, orientation %d, dev path %s",

gCameraNum,

sCameraInfo[gCameraNum].name,

sCameraInfo[gCameraNum].facing,

sCameraInfo[gCameraNum].orientation,

sCameraInfo[gCameraNum].devPath);

gCameraNum++;

break;

}

if (name_front[0] != DEFAULT_ERROR_NAME) {

char *pCameraName =strtok(name_front, ",");