Android 调用系统相机拍照

    /**
 * 调用系统相机
 */
private void takePhoto() {
        Uri uri = null;
if (which_image == FRONT_IMAGE) {
            frontFile = new File(getSDPath() +"/test/front_" + getDate() + ".jpg");
            uri = Uri.fromFile(frontFile);
        } else if (which_image == BACK_IMAGE) {
            backFile = new File(getSDPath() + "/test/back_" + getDate() + ".jpg");
            uri = Uri.fromFile(backFile);
        }
        Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        captureIntent.putExtra(MediaStore.Images.Media.ORIENTATION, 0);
        captureIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
        captureIntent.putExtra("return-data", true);
        startActivityForResult(captureIntent, TAKE_PHOTO);
    }

/**
 * 获取系统时间
 *
 * @return
 */
public static String getDate() {
        Calendar ca = Calendar.getInstance();
int year = ca.get(Calendar.YEAR);           // 获取年份
int month = ca.get(Calendar.MONTH);         // 获取月份
int day = ca.get(Calendar.DATE);            // 获取日
int minute = ca.get(Calendar.MINUTE);       // 分
int hour = ca.get(Calendar.HOUR);           // 小时
int second = ca.get(Calendar.SECOND);       // 秒

        String date = "" + year + (month + 1) + day + hour + minute + second;

return date;
    }

/**
 * 获取SD path
 *
 * @return
 */
public String getSDPath() {
        File sdDir = null;
boolean sdCardExist = Environment.getExternalStorageState()
                .equals(android.os.Environment.MEDIA_MOUNTED); // 判断sd卡是否存在
if (sdCardExist) {
            sdDir = Environment.getExternalStorageDirectory();// 获取跟目录
return sdDir.toString();
        }

return null;
    }

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == TAKE_PHOTO && resultCode == RESULT_OK) {
// Bundle bundle = data.getExtras();
// Bitmap bitmap = (Bitmap) bundle.get("data");
// if (which_image == FRONT_IMAGE) {
// ivCardFront.setImageBitmap(bitmap);
// } else if (which_image == BACK_IMAGE) {
// ivCardBack.setImageBitmap(bitmap);
// }
try {
if (which_image == FRONT_IMAGE) {

                    Uri uri = Uri.parse(MediaStore.Images.Media.insertImage(getContentResolver(), frontFile.getAbsolutePath(), null, null));
                    ContentResolver contentResolver = this.getContentResolver();
                    Bitmap bitmap = BitmapFactory.decodeStream(contentResolver.openInputStream(uri));
                    ivCardFront.setImageBitmap(bitmap);
                } else if (which_image == BACK_IMAGE) {
                    Uri uri = Uri.parse(MediaStore.Images.Media.insertImage(getContentResolver(), backFile.getAbsolutePath(), null, null));
                    ContentResolver contentResolver = this.getContentResolver();
                    Bitmap bitmap = BitmapFactory.decodeStream(contentResolver.openInputStream(uri));
                    ivCardBack.setImageBitmap(bitmap);
                }
            } catch (FileNotFoundException e) {
                e.printStackTrace();
            }
        }
    }