package com.yeshi.base.utils;

import java.io.FileNotFoundException;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.widget.Toast;

/**
 * 选择本地图片工具类 <br>
 * 因为直接获取图片容易崩溃，所以直接存入SD卡，再获取 <br>
 * 又因为写法不正确容易导致部分机型无法使用，所以封装起来复用 <br>
 * 使用方法： <br>
 * 1、调用getByAlbum、getByCamera去获取图片 <br>
 * 2、在onActivityResult中调用本工具类的onActivityResult方法进行处理 <br>
 * 3、onActivityResult返回的Bitmap记得空指针判断
 * 
 * <br>
 * <br>
 * PS：本工具类只能处理裁剪图片，如果不想裁剪，不使用本工具类的onActivityResult，自己做处理即可
 * 
 * @author linin630
 * 
 */
public class SelectPicUtil {

	/** 临时存放图片的地址，如需修改，请记得创建该路径下的文件夹 */
	private static final String lsimg = "file:///sdcard/temp.jpg";

	public static final int GET_BY_ALBUM = 801;// 如果有冲突，记得修改
	public static final int GET_BY_CAMERA = 802;// 如果有冲突，记得修改
	public static final int CROP = 803;// 如果有冲突，记得修改

	/** 从相册获取图片 */
	public static void getByAlbum(Activity act) {
		Intent getAlbum = new Intent(Intent.ACTION_GET_CONTENT);
		getAlbum.setType("image/*");
		act.startActivityForResult(getAlbum, GET_BY_ALBUM);
	}

	/** 通过拍照获取图片 */
	public static void getByCamera(Activity act) {
		String state = Environment.getExternalStorageState();
		if (state.equals(Environment.MEDIA_MOUNTED)) {
			Intent getImageByCamera = new Intent(
					MediaStore.ACTION_IMAGE_CAPTURE);
			getImageByCamera
					.putExtra(MediaStore.EXTRA_OUTPUT, Uri.parse(lsimg));
			getImageByCamera.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 0);
			act.startActivityForResult(getImageByCamera, GET_BY_CAMERA);
		} else {
			Toast.makeText(act, "请确认已经插入SD卡", Toast.LENGTH_LONG).show();
		}
	}

	/**
	 * 处理获取的图片，注意判断空指针，默认大小480*480，比例1:1
	 */
	public static Bitmap onActivityResult(Activity act, int requestCode,
			int resultCode, Intent data) {
		return onActivityResult(act, requestCode, resultCode, data, 0, 0, 0, 0);
	}

	/**
	 * 处理获取的图片，注意判断空指针
	 */
	public static Bitmap onActivityResult(Activity act, int requestCode,
			int resultCode, Intent data, int w, int h, int aspectX, int aspectY) {
		Bitmap bm = null;
		if (resultCode == Activity.RESULT_OK) {
			Uri uri = null;
			switch (requestCode) {
			case GET_BY_ALBUM:
				uri = data.getData();
				act.startActivityForResult(crop(uri, w, h, aspectX, aspectY),
						CROP);
				break;
			case GET_BY_CAMERA:
				uri = Uri.parse(lsimg);
				act.startActivityForResult(crop(uri, w, h, aspectX, aspectY),
						CROP);
				break;
			case CROP:
				bm = dealCrop(act);
				break;
			}
		}
		return bm;
	}

	/** 默认裁剪输出480*480，比例1:1 */
	public static Intent crop(Uri uri) {
		return crop(uri, 480, 480, 1, 1);
	}

	/**
	 * 裁剪，例如：输出100*100大小的图片，宽高比例是1:1
	 * 
	 * @param w
	 *            输出宽
	 * @param h
	 *            输出高
	 * @param aspectX
	 *            宽比例
	 * @param aspectY
	 *            高比例
	 */
	public static Intent crop(Uri uri, int w, int h, int aspectX, int aspectY) {
		if (w == 0 && h == 0) {
			w = h = 480;
		}
		if (aspectX == 0 && aspectY == 0) {
			aspectX = aspectY = 1;
		}
		Intent intent = new Intent("com.android.camera.action.CROP");
		// 照片URL地址
		intent.setDataAndType(uri, "image/*");
		intent.putExtra("crop", "true");
		intent.putExtra("aspectX", aspectX);
		intent.putExtra("aspectY", aspectY);
		intent.putExtra("outputX", w);
		intent.putExtra("outputY", h);
		// 输出路径
		intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.parse(lsimg));
		// 输出格式
		intent.putExtra("outputFormat", "JPEG");
		// 不启用人脸识别
		intent.putExtra("noFaceDetection", true);
		intent.putExtra("return-data", false);
		return intent;
	}

	/** 处理裁剪，获取裁剪后的图片 */
	public static Bitmap dealCrop(Context context) {
		// 裁剪返回
		Uri uri = Uri.parse(lsimg);
		Bitmap bitmap = null;
		try {
			bitmap = BitmapFactory.decodeStream(context.getContentResolver()
					.openInputStream(uri));
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		return bitmap;
	}

}