獲取android的拍照和自定義多選相冊

    獲取系統的相機功能拍照這個不難，但是需要注意的是，拍照返回後的照片如果沒有指定存儲的路徑，那麼系統將自動保存到sd卡中，得到的是拍完照的縮略圖，會失幀，顯示有些模糊，所以在調用系統相機拍完照後我們要指定一個路徑，將它存起來，需要的時候再去拿，調用相冊這裏當時需要的是相冊的多選，但是系統相冊只能單選，所以自定義了一個相冊，是直接startActivity的，我們來看看獲取相冊和系統相機的Intent是怎麼寫的。

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("添加顏色");
String[] items = {"從相冊選取", "拍照"};
builder.setNegativeButton("取消", null);
builder.setItems(items, new DialogInterface.OnClickListener() {

   @Override
   public void onClick(DialogInterface dialog, int which) {
      switch (which) {
         case CHOOSE_PICTURE:// 選擇本地照片
            Intent intent = new Intent(SampleSendActivity.this,SampleCameraActivity.class);
            startActivityForResult(intent, ACTION_IMAGE_PICTURE);
            break;
         case TAKE_PICTURE:// 拍照
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            /**
             * 每次拍照新建一個照片文件
              */
String name = new DateFormat().format("yyyyMMdd_hhmmss", Calendar.getInstance(Locale.CHINA)) + ".jpg";
           File file = new File("/sdcard/myImage/");
           file.mkdirs();// 創建文件夾
            mFilePath = "/sdcard/myImage/"+name;
           // 加載路徑
            Uri uri = Uri.fromFile(new File(mFilePath));
           // 指定存儲路徑，這樣就可以保存原圖了
            intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
           intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
           // 拍照返回圖片
            startActivityForResult(intent, ACTION_IMAGE_CAMEREA);
            break;
      }
   }
});
builder.create().show();

現在我們來看看調用系統相冊後去獲取指定的file，直接通過路徑顯示在imageview中

if (requestCode == ACTION_IMAGE_CAMEREA && resultCode == Activity.RESULT_OK) {
   String storageState = Environment.getExternalStorageState();
   if (!storageState.equals(Environment.MEDIA_MOUNTED)) {
      return;
   }
   // /sdcard
   mFilePath = "/storage/emulated/0" + mFilePath.substring(7);
   BitmapUtil.loadUriImage(SampleSendActivity.this, mFilePath, tagHolder.iv_pinkaddpig);
   //這裏的bitmaputil是我自己寫的，就是通過路徑加載到imageview中，可以忽略
}

     再來看看自定義多選相冊的實現

public class SampleCameraActivity extends Activity implements OnImageDirSelected {
    private ProgressDialog mProgressDialog;
    /**
     * 存儲文件夾中的圖片數量
     */
    private int mPicsSize;
    /**
     * 圖片數量最多的文件夾
     */
    private File mImgDir;
    /**
     * 所有的圖片
     */
    private List<String> mImgs;
    private GridView mGirdView;
    private MyAdapter mAdapter;
    /**
     * 臨時的輔助類，用於防止同一個文件夾的多次掃描
     */
    private HashSet<String> mDirPaths = new HashSet<String>();
    /**
     * 掃描拿到所有的圖片文件夾
     */
    private List<ImageFloder> mImageFloders = new ArrayList<ImageFloder>();
    private RelativeLayout mBottomLy;
    private TextView mChooseDir;
    private TextView mImageCount;
    int totalCount = 0;
    private int mScreenHeight;
    private ListImageDirPopupWindow mListImageDirPopupWindow;
    private Handler mHandler = new Handler() {
        public void handleMessage(android.os.Message msg) {
            mProgressDialog.dismiss();
            // 爲View綁定數據
            data2View();
            // 初始化展示文件夾的popupWindw
            initListDirPopupWindw();
        }
    };
    private TextView tv_samplecamera_confirm;
    private TextView tv_return;
    /**
     * 爲View綁定數據
     */
    private void data2View() {
        if (mImgDir == null) {
            Toast.makeText(getApplicationContext(), "擦，一張圖片沒掃描到",
                    Toast.LENGTH_SHORT).show();
            return;
        }
        mImgs = Arrays.asList(mImgDir.list());
        /**
         * 可以看到文件夾的路徑和圖片的路徑分開保存，極大的減少了內存的消耗；
         */
        mAdapter = new MyAdapter(getApplicationContext(), mImgs,
                R.layout.view_cameragrid_item, mImgDir.getAbsolutePath());
        mAdapter.setIamgeNull();
        mGirdView.setAdapter(mAdapter);
        mImageCount.setText(totalCount + "張");
    };
    /**
     * 初始化展示文件夾的popupWindw
     */
    private void initListDirPopupWindw() {
        mListImageDirPopupWindow = new ListImageDirPopupWindow(
                (int) LayoutParams.MATCH_PARENT, (int) (mScreenHeight * 0.7),
                mImageFloders, LayoutInflater.from(getApplicationContext())
                .inflate(R.layout.view_cameralist_dir, null));
        mListImageDirPopupWindow.setOnDismissListener(new OnDismissListener() {

            @Override
            public void onDismiss() {
                // 設置背景顏色變暗
                WindowManager.LayoutParams lp = getWindow().getAttributes();
                lp.alpha = 1.0f;
                getWindow().setAttributes(lp);
            }
        });
        // 設置選擇文件夾的回調
        mListImageDirPopupWindow.setOnImageDirSelected(this);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sample_camera);
        DisplayMetrics outMetrics = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(outMetrics);
        mScreenHeight = outMetrics.heightPixels;
        getActionBar().hide();
        initView();
        getImages();
        initEvent();
    }

    /**
     * 利用ContentProvider掃描手機中的圖片，此方法在運行在子線程中 完成圖片的掃描，最終獲得jpg最多的那個文件夾
     */
    private void getImages() {
        if (!Environment.getExternalStorageState().equals(
                Environment.MEDIA_MOUNTED)) {
            Toast.makeText(this, "暫無外部存儲", Toast.LENGTH_SHORT).show();
            return;
        }
        // 顯示進度條
        mProgressDialog = ProgressDialog.show(this, null, "正在加載...");
        new Thread(new Runnable() {
            @Override
            public void run() {
                String firstImage = null;
                Uri mImageUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
                ContentResolver mContentResolver = SampleCameraActivity.this
                        .getContentResolver();
                // 只查詢jpeg和png的圖片
                Cursor mCursor = mContentResolver.query(mImageUri, null,
                        MediaStore.Images.Media.MIME_TYPE + "=? or "
                                + MediaStore.Images.Media.MIME_TYPE + "=?",
                        new String[]{"image/jpeg", "image/png"},
                        MediaStore.Images.Media.DATE_MODIFIED);
                Log.e("TAG", mCursor.getCount() + "");
                while (mCursor.moveToNext()) {
                    // 獲取圖片的路徑
                    String path = mCursor.getString(mCursor
                            .getColumnIndex(MediaStore.Images.Media.DATA));
                    Log.e("TAG", path);
                    // 拿到第一張圖片的路徑
                    if (firstImage == null)
                        firstImage = path;
                    // 獲取該圖片的父路徑名
                    File parentFile = new File(path).getParentFile();
                    if (parentFile == null)
                        continue;
                    String dirPath = parentFile.getAbsolutePath();
                    ImageFloder imageFloder = null;
                    // 利用一個HashSet防止多次掃描同一個文件夾（不加這個判斷，圖片多起來還是相當恐怖的~~）
                    if (mDirPaths.contains(dirPath)) {
                        continue;
                    } else {
                        mDirPaths.add(dirPath);
                        // 初始化imageFloder
                        imageFloder = new ImageFloder();
                        imageFloder.setDir(dirPath);
                        imageFloder.setFirstImagePath(path);
                    }
                    int picSize = 0;
                    try{
                        picSize = parentFile.list(new FilenameFilter() {
                            @Override
                            public boolean accept(File dir, String filename) {
                                if (filename.endsWith(".jpg")
                                        || filename.endsWith(".png")
                                        || filename.endsWith(".jpeg"))
                                    return true;
                                return false;
                            }
                        }).length;
                    }catch (Exception e){
                        e.printStackTrace();
                    }
                    totalCount += picSize;
                    imageFloder.setCount(picSize);
                    mImageFloders.add(imageFloder);
                    if (picSize > mPicsSize) {
                        mPicsSize = picSize;
                        mImgDir = parentFile;
                    }
                }
                mCursor.close();
                // 掃描完成，輔助的HashSet也就可以釋放內存了
                mDirPaths = null;
                // 通知Handler掃描圖片完成
                mHandler.sendEmptyMessage(0x110);

            }
        }).start();
    }

    /**
     * 初始化View
     */
    private void initView() {
        mGirdView = (GridView) findViewById(R.id.id_gridView);
        tv_samplecamera_confirm = (TextView) findViewById(R.id.tv_samplecamera_confirm);
        mChooseDir = (TextView) findViewById(R.id.id_choose_dir);
        tv_return = (TextView) findViewById(R.id.tv_return_samplecamera);
        mImageCount = (TextView) findViewById(R.id.id_total_count);
        mBottomLy = (RelativeLayout) findViewById(R.id.id_bottom_ly);
    }

    private void initEvent() {
        tv_samplecamera_confirm.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                ArrayList<String> imageList = mAdapter.getImageList();
                Intent intent = new Intent();
                Bundle bundle = new Bundle();
                bundle.putStringArrayList("images", imageList);
                intent.putExtras(bundle);
                setResult(11, intent);
                finish();
            }
        });
        tv_return.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                finish();
            }
        });
        /**
         * 爲底部的佈局設置點擊事件，彈出popupWindow
         */
        mBottomLy.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                mListImageDirPopupWindow
                        .setAnimationStyle(R.style.anim_popup_dir);
                mListImageDirPopupWindow.showAsDropDown(mBottomLy, 0, 0);
                // 設置背景顏色變暗
                WindowManager.LayoutParams lp = getWindow().getAttributes();
                lp.alpha = .3f;
                getWindow().setAttributes(lp);
            }
        });
    }

    public void selected(ImageFloder floder) {
        mImgDir = new File(floder.getDir());
        mImgs = Arrays.asList(mImgDir.list(new FilenameFilter() {
            @Override
            public boolean accept(File dir, String filename) {
                if (filename.endsWith(".jpg") || filename.endsWith(".png")
                        || filename.endsWith(".jpeg"))
                    return true;
                return false;
            }
        }));
        /**
         * 可以看到文件夾的路徑和圖片的路徑分開保存，極大的減少了內存的消耗；
         */
        mAdapter = new MyAdapter(getApplicationContext(), mImgs,
                R.layout.view_cameragrid_item, mImgDir.getAbsolutePath());
        mGirdView.setAdapter(mAdapter);
        mImageCount.setText(floder.getCount() + "張");
        mChooseDir.setText(floder.getName());
        mListImageDirPopupWindow.dismiss();
    }
}

   來看看調用後的效果

相冊調用後返回的是包含相片的本地路徑字符串

ArrayList<String> imageArrayList = bundle.getStringArrayList("images");

源碼下載：

http://download.csdn.net/download/jacky_can/9878331