ImagePicker.java

package com.partynetwork.myview.myimageview;

import java.io.File;
import java.util.Date;

import com.partynetwork.dataprovider.util.BitmapUtil;
import com.partynetwork.myview.mytoast.MenuBottomPop;

import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Environment;
import android.provider.MediaStore;
import android.provider.MediaStore.Images.Media;
import android.text.format.DateFormat;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Toast;

public class ImagePicker {

	private Activity mActivity;

	public static final int SELECT_PICTURE = 100;
	public static final int SELECT_CAMER = 101;
	public static final int SELECT_CAMER_CLIPPING = 102;

	// 是否需要保存
	private boolean needSave;
	/** 本次生成的路径 */
	private String imagePath;

	// 弹出框
	private MenuBottomPop menuBottonPop;

	/**
	 * 
	 * @param activity
	 * @param needClipping
	 *            是否需要缩放
	 */
	public ImagePicker(Activity activity) {
		this(activity, false);
	}

	/**
	 * 
	 * @param activity
	 * @param needClipping
	 * @param needSave
	 */
	public ImagePicker(Activity activity, boolean needSave) {
		this.mActivity = activity;
		init();
	}

	/**
	 * 初始化
	 */
	private void init() {

	}

	String[] str = new String[] { "相册" };//相机

	private OnClickListener clickListener = new OnClickListener() {

		public void onClick(View v) {
			menuBottonPop.dismiss();
			if (v.getTag().equals(str[0])) {
				Intent intent = new Intent(Intent.ACTION_GET_CONTENT, null);
				intent.setType("image/*");
				mActivity.startActivityForResult(intent, SELECT_PICTURE);
			} else if (v.getTag().equals(str[1])) {
				Intent intent2 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
				imagePath = BitmapUtil.getImagePath();
				Uri uri = Uri.fromFile(new File(imagePath));
				intent2.putExtra(MediaStore.EXTRA_OUTPUT, uri);
				mActivity.startActivityForResult(intent2, SELECT_CAMER);
			}

		}
	};

	/**
	 * 显示选择弹窗
	 */
	public void show(View view) {

		menuBottonPop = new MenuBottomPop(mActivity, str, clickListener);
		menuBottonPop.showAtLocation(view);

	}

	/**
	 * 处理图片的返回数据
	 */
	public String onActivityResult(int requestCode, int resultCode, Intent data) {
		String filePath = "";
		Object object = null;
		// 选择照片的返回结果
		if (data == null) {
			filePath = imagePath;
			// 根据地址，实例化对象
			return filePath;
		}

		if (resultCode == Activity.RESULT_OK) {
			Bitmap bitmap = null;
			switch (requestCode) {
			case SELECT_PICTURE:
				// 相册
				Uri uri = data.getData();
				String[] proj = { MediaStore.Images.Media.DATA };
				Cursor cursor = mActivity.managedQuery(uri, proj, null, null,
						null);
				int column_index = cursor
						.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
				cursor.moveToFirst();
				filePath = cursor.getString(column_index);
				break;
			case SELECT_CAMER:
				// 相机
				if (data.getData() != null) {
					// 根据返回的URI获取对应的SQLite信息
					Cursor cursor2 = mActivity.getContentResolver().query(
							data.getData(), null, null, null, null);
					if (cursor2.moveToFirst()) {
						filePath = cursor2.getString(cursor2
								.getColumnIndex(Media.DATA));// 获取绝对路径
					}
					cursor2.close();
				} else {// 三星 小米(小米手机不会自动存储DCIM... 这点让哥又爱又恨...)
					object = (Bitmap) (data.getExtras() == null ? null : data
							.getExtras().get("data"));
					bitmap = object == null ? null : (Bitmap) object;
					if (bitmap != null) {
						try {
							filePath = BitmapUtil.saveImg(bitmap, DateFormat
									.format("yyyyMMddhhmmss", new Date())
									.toString());
						} catch (Exception e) {
							e.printStackTrace();
						}
					}
				}
				filePath = !filePath.equals("") ? filePath : getRealFilePath();
				break;
			default:
				break;
			}
			// 最后的图片操作
			if (bitmap != null && needSave) {
				try {
					filePath = BitmapUtil.saveImg(bitmap);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		} else {
			Toast.makeText(mActivity, "请重新选择图片", Toast.LENGTH_SHORT).show();
		}

		return filePath;
	}

	/**
	 * 获取系统默认存储真实文件路径 两个路径 一个是最后一张所拍图片路径
	 * (由于设置了存储路径所以DCIM中会存储两张一模一样的图片，所以在此获取两张图片路径以便于缩放处理后全部删除)
	 * 
	 * @param filePath
	 * @return
	 */
	protected String getRealFilePath() {
		String filePath = "";
		// MediaStore.Images.Media.EXTERNAL_CONTENT_URI
		// content://media/external/images/media
		Cursor cursor = mActivity.getContentResolver().query(
				MediaStore.Images.Media.EXTERNAL_CONTENT_URI, null, null, null,
				Media.DATE_MODIFIED + " desc");
		if (cursor.moveToNext()) {
			/**
			 * _data：文件的绝对路径 Media.DATA='_data'
			 */
			filePath = cursor.getString(cursor.getColumnIndex(Media.DATA));
		}
		return filePath;
	}
}