set Camera Focus - Android Camera

Android examples for Camera:Camera Focus

  1. HOME
  2. Android
  3. Camera
  4. Camera Focus

Description

set Camera Focus

Demo Code

import java.util.Arrays;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

import android.hardware.Camera;

public class Main {
  private static final String TAG = "";

  public static void setFocus(Camera.Parameters parameters, boolean autoFocus, boolean disableContinuous,
      boolean safeMode) {
    List<String> supportedFocusModes = parameters.getSupportedFocusModes();
    String focusMode = null;//from  w w w  .  j a va2s  .  c o m
    if (autoFocus) {
      if (safeMode || disableContinuous) {
        focusMode = findSettableValue("focus mode", supportedFocusModes, Camera.Parameters.FOCUS_MODE_AUTO);
      } else {
        focusMode = findSettableValue("focus mode", supportedFocusModes,
            Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE, Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO,
            Camera.Parameters.FOCUS_MODE_AUTO);
      }
    }
    // Maybe selected auto-focus but not available, so fall through here:
    if (!safeMode && focusMode == null) {
      focusMode = findSettableValue("focus mode", supportedFocusModes, Camera.Parameters.FOCUS_MODE_MACRO,
          Camera.Parameters.FOCUS_MODE_EDOF);
    }
    if (focusMode != null) {
      if (focusMode.equals(parameters.getFocusMode())) {

      } else {
        parameters.setFocusMode(focusMode);
      }
    }
  }

  private static String findSettableValue(String name, Collection<String> supportedValues, String... desiredValues) {

    if (supportedValues != null) {
      for (String desiredValue : desiredValues) {
        if (supportedValues.contains(desiredValue)) {

          return desiredValue;
        }
      }
    }
    return null;
  }

}

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