程式碼專案github地址 IMAlbum

一、業務場景

1、聊天介面傳送圖片==>多選點選+有右上角”傳送”+圖片預覽==>圖片預覽支援右上角”傳送”邏輯
2、發表動態==>多選點選+右上角”完成” + 圖片預覽==>圖片預覽支援右上角”完成”邏輯
3、個人資料更改頭像==>單選點選 + 圖片預覽截圖==>圖片預覽截圖支援右上角”使用”邏輯

二、Intent引數設計;(Intent傳參原則:儘量不要使用自定義型別專遞引數)

1、最基本的引數傳遞(可選圖片最大數目、右上角的標題、單選模式還是多選模式、返回結果的引數)

    /** 最大圖片選擇次數，int型別，預設9 */
 

    public static final String EXTRA_SELECT_COUNT = "max_select_count";

    /** 傳送按鈕的標題  如完成或傳送 */
    public static final String EXTRA_SUBMIT_TITLE = "extra_submit_title";

    /** 圖片選擇模式，預設多選 */
    public static final String EXTRA_SELECT_MODE = "select_count_mode";

    /** 選擇結果，返回為 ArrayList<String> 圖片路徑集合  */
 

    public static final String EXTRA_RESULT = "select_result";

2、擴充套件部分引數傳遞(圖片選擇介面的第一個Item是否顯示拍照功能、預覽的activity是否支援”勾選取消結束”勾選按鈕)

    /** 是否顯示相機，預設顯示 */
    public static final String EXTRA_SHOW_CAMERA = "show_camera";

    /** 是否跳轉到ImageDetailCheckPicsAct上*/
    public static final String EXTRA_JUMPTOCHECKPICS = "is_jumpto_checkpics"
 
;

3、在”發表動態選擇”已經選了5張圖片,再去選擇圖片–圖片瀏覽器需要將已選的圖片勾選狀態設定為勾選

    /** 預設已被選擇集 */
    public static final String EXTRA_DEFAULT_SELECTED_LIST = "default_list";

4、截圖功能(單選模式下,如果啟動截圖模式,那麼選擇後跳轉截圖介面)

    /** 單選是否原圖返回或先跳轉截圖後返回 */
    public static final String RESIZEBIT = "RESIZEBIT";
    /** 截圖儲存的路徑 */
    public static final String RESULT = "resultPath";
    /** 單選 是否截圖 */
    public static final String MODE_SCALE_BOOLEAN = "MODE_SCALE_BOOLEAN";
    /** 單選 截圖區域藍色框的寬;單位dp */
    public static final String SCALEW = "scaleW";
    /** 單選 截圖區域藍色框的高;單位dp */
    public static final String SCALEH = "SCALEH";
    /** 單選 截圖後圖片儲存的畫素寬;單位sp */
    public static final String LIMITW = "limitWidth";
    /** 單選 截圖後圖片儲存的畫素高;單位sp */
    public static final String LIMITH = "limitHight";
    /** 單選截圖的儲存的路徑 */
    public static final String MODE_SCALE_PATH = "MODE_SCALE_PATH";

三、理清楚需求之後進行設計

此處省略;分享的程式碼實現的功能,尚未設計優化程式碼可讀性較差
程式碼專案github地址 IMAlbum

四、程式碼使用方法

    public static void jumpToSelectPics(Activity mContext, boolean isShowCamera, int selectMaxCount, int selectMode,
            String submitBtnStr, boolean isJumpToCheckPics, ArrayList<String> hasSelectList) {
        Intent intent = new Intent(mContext, MultiImageSelectorActivity.class);

        // whether show camera
        intent.putExtra(MultiImageSelectorActivity.EXTRA_SHOW_CAMERA, isShowCamera);

        // String of submit button
        intent.putExtra(MultiImageSelectorActivity.EXTRA_SUBMIT_TITLE, submitBtnStr);

        // String of submit button
        intent.putExtra(MultiImageSelectorFragment.EXTRA_JUMPTOCHECKPICS, isJumpToCheckPics);

        // max select image amount
        intent.putExtra(MultiImageSelectorActivity.EXTRA_SELECT_COUNT, selectMaxCount);

        // select mode (MultiImageSelectorActivity.MODE_SINGLE OR MultiImageSelectorActivity.MODE_MULTI)
        intent.putExtra(MultiImageSelectorActivity.EXTRA_SELECT_MODE, selectMode);

        // EXTRA_DEFAULT_SELECTED_LIST

        if (hasSelectList != null) {
            intent.putStringArrayListExtra(MultiImageSelectorActivity.EXTRA_DEFAULT_SELECTED_LIST, hasSelectList);
        }
        //
        mContext.startActivityForResult(intent, REQUEST_IMAGE);
    }


    /**
     * 圖片格式jpeg
     * @param picResultPath 圖片的要儲存的地址
     * @param scaleW 截圖區域的寬度   單位 dp
     * @param scaleH 截圖區域的高度   單位 dp
     * @param limtWidth 裁剪出來的圖的寬度 
     * @param limitHight 裁剪出來的圖的高度
     * @param isScaleImg 是否按照 limtWidth、limitHight的比例進行放大縮小
     * @description：
     * @author zhangjianlin (990996641)
     * @date 2015年6月11日 下午4:25:00
     */
    public static void jumpToSelecAndCropImg(Activity mContext, String picResultPath, int scaleW, int scaleH,
            int limtWidth, int limitHight, boolean isScaleImg) {
        Intent intent = new Intent(mContext, MultiImageSelectorActivity.class);

        // whether show camera
        intent.putExtra(MultiImageSelectorActivity.EXTRA_SHOW_CAMERA, false);

        // max select image amount
        intent.putExtra(MultiImageSelectorActivity.EXTRA_SELECT_COUNT, 1);
        // select mode (MultiImageSelectorActivity.MODE_SINGLE OR MultiImageSelectorActivity.MODE_MULTI)
        intent.putExtra(MultiImageSelectorActivity.EXTRA_SELECT_MODE, MultiImageSelectorActivity.MODE_SINGLE);
        // intent.putExtra(MultiImageSelectorActivity.EXTRA_DEFAULT_CROP_CAMERA, isScaleImg);

        intent.putExtra(CropImageAct.RESIZEBIT, isScaleImg);
        intent.putExtra(CropImageAct.RESULT, picResultPath);
        intent.putExtra(CropImageAct.SCALEW, scaleW);
        intent.putExtra(CropImageAct.SCALEH, scaleH);
        intent.putExtra(CropImageAct.LIMITW, limtWidth);
        intent.putExtra(CropImageAct.LIMITH, limitHight);

        mContext.startActivityForResult(intent, REQUEST_CROPIMAGE);
    }

    /**
     * @Description:選擇單張圖片不剪下
     * 返回值  ArrayList
     switch (requestCode) {
     case IntentUtils.REQUEST_IMAGE:
                if (data != null) {
                    ArrayList<String> resultList = data
                            .getStringArrayListExtra(MultiImageSelectorActivity.EXTRA_RESULT);
                }
                break;
     }
     * @param mContext
     */
    public static void jumpToSelectNoCropImg(Activity mContext) {
        jumpToSelectPics(mContext, false, 2, MultiImageSelectorActivity.MODE_SINGLE);
    }

五、baseselectactivity類

    /**
    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
    }
 <activity android:name="com.huika.huixin.control.me.activity.PersonalInfoAct" 
            android:launchMode="singleTask" 
            android:configChanges="orientation|keyboardHidden|screenSize"
            >
        </activity> 



 * @Description: 選擇圖片的act
 * @author zhangjianlin
 * @date 2015-9-24 下午2:06:28
 */
public abstract class BaseSelectPicAct extends Activity {

    private final int CROPCAMARA_TAKEPHOTO = 1003;
    private final int CROPCAMARA_SELECTFROMALBUM = 1004;

    /** 從 拍照中選擇 */
    private final int ACTIVITY_RESULT_CROPCAMARA_WITH_DATA = 1;
    private File mPicFile; // 選擇圖片路徑
    private String picPath;


    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode != RESULT_OK) { return; }
        switch (requestCode) {
            case IntentUtils.REQUEST_IMAGE: // 選擇照片
                /** add by zjl */
                if (null != data) {
                    ArrayList<String> resultList = data
                            .getStringArrayListExtra(MultiImageSelectorActivity.EXTRA_RESULT);
                    hasSelectPicsNoCrop(resultList);
                    /* if (null != resultList) {
                     * 
                     * } */
                }
                break;

            case ACTIVITY_RESULT_CROPCAMARA_WITH_DATA: // 拍照
                /* if (mPicFile.exists()) {
                 * 
                 * } */
                if (mPicFile == null && !TextUtils.isEmpty(picPath)) mPicFile = new File(picPath);
                if (null != mPicFile && mPicFile.exists()) {
                    hasTakePhotoPic(mPicFile);
                }
                break;
            case IntentUtils.REQUEST_CROPIMAGE:
                if (null == data) { return; }
                if (TextUtils.isEmpty(mPicFile.toString()) || !mPicFile.exists()) {
                    Toast.makeText(this, "沒有選擇圖片", Toast.LENGTH_LONG).show();
                    return;
                }
                String mPicNativePath = Environment.getExternalStorageDirectory().getAbsolutePath() +"/image" + mPicFile.getName();
                try {
                    FilecacheTool.copyFile(mPicFile.getAbsolutePath(), mPicNativePath);
                } catch (Exception e) {
                    e.printStackTrace();
                }

                hasPicsCroped(mPicNativePath);
                break;
        }
    };

    protected void selectPhoto() {
        ImageTool.jumpToSelectNoCropImg(this);
    }

    protected void selectPhotoAndCrop() {
        mPicFile = ImageTools.initTempFile();
        /* photoIntent = ImageTools.cropPhotoOfCompressFromGalleryIntent(Uri.fromFile(mPicFile)); startActivityForResult(photoIntent, Constant.ACTIVITY_RESULT_CROPIMAGE_WITH_DATA); */
        ImageTool.jumpToSelecAndCropImg(this, mPicFile.toString(), 300, 300, 600, 600, true);
    }

    /** 拍照 */
    protected void takePhoto() {
        if (!ImageTools.isSDCardExist()) {
            Toast.makeText(this, "沒有記憶體卡", Toast.LENGTH_LONG).show();
            return;
        }
        mPicFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/"
                + System.currentTimeMillis() + ".jpg");
        picPath = mPicFile.getAbsolutePath();
        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mPicFile));
        startActivityForResult(intent, ACTIVITY_RESULT_CROPCAMARA_WITH_DATA);
    }

    protected abstract void hasSelectPicsNoCrop(ArrayList<String> resultList);

    protected abstract void hasTakePhotoPic(File mPicFile);

    protected abstract void hasPicsCroped(String mPicNativePath);

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        outState.putString("picPathCache", picPath);
        super.onSaveInstanceState(outState);
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        picPath = savedInstanceState.getString("picPathCache");
        super.onRestoreInstanceState(savedInstanceState);
    }
}

六、相簿選擇simple

public class AlbumTestAct extends BaseSelectPicAct implements OnClickListener {

    private ImageView iv_showresult;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.act_albumtest);
        findViewById(R.id.tv_takephoto).setOnClickListener(this);
        findViewById(R.id.tv_selectphoto).setOnClickListener(this);
        findViewById(R.id.tv_selectandcrop).setOnClickListener(this);
        iv_showresult = (ImageView) findViewById(R.id.iv_showresult);

    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        switch (v.getId()) {
        case R.id.tv_takephoto:
            takePhoto();
            break;
        case R.id.tv_selectphoto:
            selectPhoto();
            break;
        case R.id.tv_selectandcrop:
            selectPhotoAndCrop();
            break;

        default:
            break;
        }
    }

    @Override
    protected void hasSelectPicsNoCrop(ArrayList<String> resultList) {
        // TODO Auto-generated method stub
        if (null != resultList) {
            if(resultList.size() > 0)
            {
                ImageLoader.getInstance().displayImage(Scheme.FILE.wrap(resultList.get(0)), iv_showresult);
            }
        }
    }

    @Override
    protected void hasTakePhotoPic(File mPicFile) {
        // TODO Auto-generated method stub
        if(null != mPicFile && mPicFile.exists())
        {
        ImageLoader.getInstance().displayImage(Scheme.FILE.wrap(mPicFile.getPath()), iv_showresult);
        }
    }

    @Override
    protected void hasPicsCroped(String mPicNativePath) {
        // TODO Auto-generated method stub
        if(null != mPicNativePath && new File(mPicNativePath).exists())
        {
        ImageLoader.getInstance().displayImage(Scheme.FILE.wrap(mPicNativePath), iv_showresult);
        }
    }

}