一个选择照片的基类

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/**
 * Created by pc on 2016/5/10.
 * 选择照片的基类
 */
public class photoActivity extends BaseActivity implements View.OnClickListener {


    private static final int PHOTO_REQUEST_TAKEPHOTO = 1;// 拍照
    private static final int PHOTO_REQUEST_GALLERY = 2;// 从相册中选择
    private static final int PHOTO_REQUEST_CUT = 3;// 结果
    private File tempFile;
    private String saveBmpToSd_path;
    /**
     * 截屏比例
     */
    private int  scale = 1;

    /**
     * 储存图片路径
     */
    private HashMap<String,String> pathMap = new HashMap<>();
    private ImageView  iv_photo;
    private String  mapKey;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        initDialog();
    }


    private Dialog dialog;
    private void initDialog(){
        dialog = new Dialog(this, R.style.dialog);
        dialog.setContentView(R.layout.dialog_layout);
        Window dialogWindow = dialog.getWindow();
        dialog.setCanceledOnTouchOutside(true);// 设置点击屏幕Dialog消失
        dialogWindow.setLayout(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT);
        WindowManager.LayoutParams lp = dialogWindow.getAttributes();
        dialogWindow.setGravity(Gravity.BOTTOM);
        dialogWindow.setWindowAnimations(R.style.dialogWindowAnim); // 设置窗口弹出动画
        TextView tv_photo = (TextView) dialog.findViewById(R.id.tv_photo);
        tv_photo.setOnClickListener(this);
        TextView  tv_camera = (TextView) dialog.findViewById(R.id.tv_camera);
        tv_camera.setOnClickListener(this);
        TextView  tv_close = (TextView) dialog.findViewById(R.id.tv_close);
        tv_close.setOnClickListener(this);


        String DIR =    Environment.getExternalStorageDirectory()+"/DCIM/Camera";
        File dirPath = new File(DIR);
        if (!dirPath.exists()) {
            dirPath.mkdirs();
        }
//        String name = getPhotoFileName();
//        photoPath =  DIR+"/"+name;


        tempFile = new File(Environment.getExternalStorageDirectory()+"/DCIM/Camera",getPhotoFileName());
    }


    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.tv_photo:
                intent = new Intent(Intent.ACTION_PICK, null);
                intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,"image/*");
                startActivityForResult(intent, PHOTO_REQUEST_GALLERY);
                dialog.dismiss();
                break;
            case R.id.tv_camera:
                intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);// 打开相机
                intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(tempFile));
                startActivityForResult(intent, PHOTO_REQUEST_TAKEPHOTO);///mnt/sdcard/DCIM//IMG_20151127_143744.jpg
                dialog.dismiss();
                break;
            case R.id.tv_close:
                dialog.dismiss();
                break;


            default:
                break;
        }
    }


    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        Log.e("onActivityResult==>", "" + "running");
        switch (requestCode) {
            case PHOTO_REQUEST_TAKEPHOTO:
                startPhotoZoom(Uri.fromFile(tempFile), 150);
                break;

            case PHOTO_REQUEST_GALLERY:
                if (data != null)
                    startPhotoZoom(data.getData(), 150);
                break;
            case PHOTO_REQUEST_CUT:
                if (data != null)
                    setPicToView(data);
                break;
            default:
                break;
        }
    }


    private void startPhotoZoom(Uri uri, int size) {
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(uri, "image/*");
        // crop为true是设置在开启的intent中设置显示的view可以剪裁
        intent.putExtra("crop", "true");

        // aspectX aspectY 是宽高的比例
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", scale);


        intent.putExtra("noFaceDetection", true);// 取消人脸识别(直接把截取框放到脸部)
        // outputX,outputY 是剪裁图片的宽高
        intent.putExtra("outputX", size);
        intent.putExtra("outputY", size);
        intent.putExtra("return-data", true);
        // 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CUT
        startActivityForResult(intent, PHOTO_REQUEST_CUT);
    }

    //将进行剪裁后的图片显示到UI界面上
    private void setPicToView(Intent picdata) {
        Bundle bundle = picdata.getExtras();
        if (bundle != null) {
            Bitmap photo = bundle.getParcelable("data");
            if(photo == null){
                String url = bundle.getString("croppedpath");
                if(ImageHelper.Exist(url)){
                    photo = ImageHelper.getimage(url, 100);
                }

            }
            if(photo != null){

//                imgs[index].setImageBitmap(photo);
//                tvphotos[index].setVisibility(View.GONE);

                //压缩图片
                Bitmap sbitmap = ImageHelper.compressImage(photo, 50);
//          Bitmap sbitmap = BitmapUtil.comp(photo);
                iv_photo.setImageBitmap(sbitmap);
//          //保存图片
                String filename = getPhotoFileName();
                saveBmpToSd_path = ImageHelper.saveBmpToSd(sbitmap, filename , 100);
                if(ImageHelper.Exist(saveBmpToSd_path)){
                    pathMap.put(mapKey, saveBmpToSd_path);
                    photo.recycle();
                    photo = null ;
//                    sbitmap.recycle();
//                    sbitmap = null ;
                }
            }else {
                ShowToase.showToast(this, "图片截取异常");
            }
        }
    }


    // 使用系统当前日期加以调整作为照片的名称
    private String getPhotoFileName() {
        Date date = new Date(System.currentTimeMillis());
        SimpleDateFormat dateFormat = new SimpleDateFormat("‘IMG‘_yyyyMMdd_HHmmss");
        return dateFormat.format(date) + ".jpg";
    }

    /**
     * 上传是调用
     * @return
     */
  protected  HashMap<String,String> getMap(){
    return    pathMap ;
  };

    /**
     * 显示
     * @param img
     * @param key 服务端要求的key字段
     */
    protected  void   showDialog(ImageView img ,String  key){
        iv_photo= img;
        mapKey= key;
        dialog.show();;
    }


}

<!--普通dialog-->
<style name="dialog">
    <item name="android:windowFrame">@null</item>
    <!--Dialog的windowFrame框为无 -->
    <item name="android:windowIsFloating">true</item>
    <!--是否浮现在activity之上 -->
    <item name="android:windowIsTranslucent">true</item>
    <!-- 是否半透明 -->
    <item name="android:windowNoTitle">true</item>
    <item name="android:backgroundDimEnabled">true</item>
    <item name="android:windowBackground">@android:color/transparent</item>
</style>

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/layout_root"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
   >

    <LinearLayout
        android:id="@+id/ll_dialog"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        android:gravity="center"
        android:background="@color/blue">
        <TextView
            android:id="@+id/tv_photo"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="相册"
            android:textColor="@color/white"
            android:padding="15dip"
            android:gravity="center"/>
        <View
            android:layout_width="fill_parent"
            android:layout_height="0.5dip"
            android:background="#c2c2c2"/>
        <TextView
            android:id="@+id/tv_camera"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="拍照"
            android:textColor="@color/white"
            android:padding="15dip"
            android:gravity="center"/>
        <View
            android:layout_width="fill_parent"
            android:layout_height="0.5dip"
            android:background="#c2c2c2"/>
        <TextView
            android:id="@+id/tv_close"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="取消"
            android:textColor="@color/white"
            android:padding="15dip"
            android:gravity="center"/>
    </LinearLayout>


</RelativeLayout>

一个选择照片的基类

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原文地址：http://www.cnblogs.com/Android-FJH/p/5570897.html