Android Open Source - alwaysflash Camera Util

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License

The source code is released under:

Apache License

Java Source Code

package com.happykbs.util;
//from   ww w  .ja  va  2s  .  com
import java.util.List;

import android.content.Context;
import android.content.pm.PackageManager;
import android.hardware.Camera;
import android.util.Log;

public class CameraUtil {
  private final static String TAG = "HAPPYKBS[CAMERA]";
  public CameraUtil() {
    
  }
    /** Check if this device has a camera */
    public boolean checkCameraHardware(Context context) {
        if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA) &&
            context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH)){
            // this device has a camera
          Log.i(TAG, "checkCameraHardware=true");
            return true;
        } else {
            // no camera on this device
          Log.e(TAG, "checkCameraHardware=false["+context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA_FLASH)+"]");
            return false;
        }
    }
    
    public Camera getCameraInstance(){
        Camera c = null;
        try {
            c = Camera.open(); // attempt to get a Camera instance
            Log.i(TAG, "getCameraInstance=["+c.toString()+"]");
        }
        catch (Exception e){
          e.printStackTrace();
            // Camera is not available (in use or does not exist)
          Log.e(TAG, "Camera is not available (in use or does not exist).");
        }
        return c; // returns null if camera is unavailable
    }
    
    public Camera.Parameters getCameraParameters(Camera camera) {
      Camera.Parameters params = null;
      try {
        params = camera.getParameters();
            Log.i(TAG, "getParameters=["+params.toString()+"]");
      } catch(Exception e){
        e.printStackTrace();
      }
      
      List<String> flashModes = params.getSupportedFlashModes();
        Log.i(TAG, flashModes.toString());
        
         if (flashModes.contains(Camera.Parameters.FLASH_MODE_TORCH)) {
           // Flash Torch mode is supported
           Log.i(TAG, "FLASH_MODE_TORCH is supported.");
           return params;
         } else {
           Log.e(TAG, "FLASH_MODE_TORCH is not supported.");
           return null;
         }
    }
}

Java Source Code List

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