上传本地图像

效果图



首先添加依赖

compile 'com.facebook.fresco:fresco:0.8.1+'
compile 'org.greenrobot:eventbus:3.1.1'
compile 'io.reactivex.rxjava2:rxjava:2.1.7'
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'

compile 'com.squareup.retrofit2:retrofit:2.3.0'
compile 'com.squareup.retrofit2:converter-gson:2.3.0'
compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
compile 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'

权限

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>



ApiService
public interface ApiService {
    //    https://www.zhaoapi.cn/file/upload
    @Multipart
    @POST("upload")
    Flowable<MessageBean> getMusicList(@Query("uid") String uid,  @Part MultipartBody.Part file);

}


BasePresenter
public interface BasePresenter{
    void getData(String uid, MultipartBody.Part file);
}



ImageUtils
public class ImageUtils {

    /**
     * Save image to the SD card
     *
     * @param photoBitmap
     * @param photoName
     * @param path
     */
    public static String savePhoto(Bitmap photoBitmap, String path,
                                   String photoName) {
        String localPath = null;
        if (android.os.Environment.getExternalStorageState().equals(
                android.os.Environment.MEDIA_MOUNTED)) {
            File dir = new File(path);
            if (!dir.exists()) {
                dir.mkdirs();
            }

            File photoFile = new File(path, photoName + ".png");
            FileOutputStream fileOutputStream = null;
            try {
                fileOutputStream = new FileOutputStream(photoFile);
                if (photoBitmap != null) {
                    if (photoBitmap.compress(Bitmap.CompressFormat.PNG, 100,
                            fileOutputStream)) { // 转换完成
                        localPath = photoFile.getPath();
                        fileOutputStream.flush();
                    }
                }
            } catch (FileNotFoundException e) {
                photoFile.delete();
                localPath = null;
                e.printStackTrace();
            } catch (IOException e) {
                photoFile.delete();
                localPath = null;
                e.printStackTrace();
            } finally {
                try {
                    if (fileOutputStream != null) {
                        fileOutputStream.close();
                        fileOutputStream = null;
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return localPath;
    }

    /**
     * 转换图片成圆形
     *
     * @param bitmap 传入Bitmap对象
     * @return
     */
    public static Bitmap toRoundBitmap(Bitmap bitmap) {
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        float roundPx;
        float left,top,right,bottom,dst_left,dst_top,dst_right,dst_bottom;
        if (width <= height) {
            roundPx = width / 2;
            top = 0;
            bottom = width;
            left = 0;
            right = width;
            height = width;
            dst_left = 0;
            dst_top = 0;
            dst_right = width;
            dst_bottom = width;
        } else {
            roundPx = height / 2;
            float clip = (width - height) / 2;
            left = clip;
            right = width - clip;
            top = 0;
            bottom = height;
            width = height;
            dst_left = 0;
            dst_top = 0;
            dst_right = height;
            dst_bottom = height;
        }
        Bitmap output = Bitmap.createBitmap(width,
                height, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(output);
        final int color = 0xff424242;
        final Paint paint = new Paint();
        final Rect src = new Rect((int)left, (int)top, (int)right, (int)bottom);
        final Rect dst = new Rect((int)dst_left, (int)dst_top, (int)dst_right, (int)dst_bottom);
        final RectF rectF = new RectF(dst);
        paint.setAntiAlias(true);
        canvas.drawARGB(0, 0, 0, 0);
        paint.setColor(color);
        canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
        paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
        canvas.drawBitmap(bitmap, src, dst, paint);
        return output;
    }
}



MainActivity
public  class MainActivity extends AppCompatActivity implements NewsView {

    @BindView(R.id.my_image_view)
    ImageView imageView;
    @BindView(R.id.btn_xiangji)
    Button mBtnXiangji;
    @BindView(R.id.btn_xiangce)
    Button mBtnXiangce;
    @BindView(R.id.btn_cancel)
    Button mBtnCancel;
    private File tempFile;
    private static final String PHOTO_FILE_NAME = "temp_photo.jpg";
    private static final int PHOTO_REQUEST_CAREMA = 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 NewsPresenter presenter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);
        presenter = new NewsPresenter();
        presenter.attachView(this);
    }

    @OnClick({R.id.my_image_view, R.id.btn_xiangji, R.id.btn_xiangce, R.id.btn_cancel})
    public void onClick(View v) {
        switch (v.getId()) {
            default:
                break;
            case R.id.my_image_view:
                break;
            case R.id.btn_xiangji:
                // 激活相机
                Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
                // 判断存储卡是否可以用,可用进行存储
                if (hasSdcard()) {
                    tempFile = new File(Environment.getExternalStorageDirectory(), PHOTO_FILE_NAME);
                    // 从文件中创建uri
                    Uri uri = Uri.fromFile(tempFile);
                    intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
                }
                // 开启一个带有返回值的Activity,请求码为PHOTO_REQUEST_CAREMA
                startActivityForResult(intent, PHOTO_REQUEST_CAREMA);
                break;
            case R.id.btn_xiangce:
                // 激活系统图库,选择一张图片
                Intent intent1 = new Intent(Intent.ACTION_PICK);
                intent1.setType("image/*");
                // 开启一个带有返回值的Activity,请求码为PHOTO_REQUEST_GALLERY
                startActivityForResult(intent1, PHOTO_REQUEST_GALLERY);
                break;
            case R.id.btn_cancel:
                break;
        }
    }
    /*
  * 判断sdcard是否被挂载
  */
    private boolean hasSdcard() {
        //判断SD卡手否是安装好的   media_mounted
        if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
            return true;
        } else {
            return false;
        }
    }
    /*
    * 剪切图片
    */
    private void crop(Uri uri) {
        // 裁剪图片意图
        Intent intent = new Intent("com.android.camera.action.CROP");
        intent.setDataAndType(uri, "image/*");
        intent.putExtra("crop", "true");
        // 裁剪框的比例,1:1
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        // 裁剪后输出图片的尺寸大小
        intent.putExtra("outputX", 250);
        intent.putExtra("outputY", 250);

        intent.putExtra("outputFormat", "JPEG");// 图片格式
        intent.putExtra("noFaceDetection", true);// 取消人脸识别
        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);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == PHOTO_REQUEST_GALLERY) {
            // 从相册返回的数据
            if (data != null) {
                // 得到图片的全路径
                Uri uri = data.getData();
                crop(uri);
            }
        } else if (requestCode == PHOTO_REQUEST_CAREMA) {
            // 从相机返回的数据
            if (hasSdcard()) {
                crop(Uri.fromFile(tempFile));
            } else {
                Toast.makeText(MainActivity.this, "未找到存储卡,无法存储照片!", Toast.LENGTH_SHORT).show();
            }
        } else if (requestCode == PHOTO_REQUEST_CUT) {
            // 从剪切图片返回的数据
            if (data != null) {
                Bitmap bitmap = data.getParcelableExtra("data");
                /**
                 * 获得图片
                 */
                imageView.setImageBitmap(bitmap);
                setImgByStr( bitmap);
            }
            try {
                // 将临时文件删除
                tempFile.delete();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        super.onActivityResult(requestCode, resultCode, data);
    }


    /**
     * 上传头像
     */
    public  void setImgByStr(Bitmap bitmap) {
        if(bitmap != null){
            // 拿着imagePath上传了
            // ...
        }
        String imagePath = ImageUtils.savePhoto(bitmap, Environment
                .getExternalStorageDirectory().getAbsolutePath(), String
                .valueOf(System.currentTimeMillis()));
        Log.d("zxz","imagePath:"+imagePath);
        if(imagePath!=null){
            File file=new File(imagePath);//将要保存图片的路径

            try {
                BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file));
                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos);
                bos.flush();
                bos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
            RequestBody photoRequestBody = RequestBody.create(MediaType.parse("image/png"), file);
            MultipartBody.Part photo = MultipartBody.Part.createFormData("file", file.getName(), photoRequestBody);
            presenter.getData("71",photo);
        }

    }

    @Override
    protected void onResume() {
        super.onResume();

    }

    @Override
    public void onSuccess(MessageBean messageBean) {
        String msg = messageBean.getMsg();
        Log.e("zxz",msg);
    }
}




MessageBean
public class MessageBean {
    /**
     * msg : 请求成功
     * code : 0
     * data : [{"list":[{"bargainPrice":99,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/4345173.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t6037/35/2944615848/95178/6cd6cff0/594a3a10Na4ec7f39.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6607/258/1025744923/75738/da120a2d/594a3a12Ne3e6bc56.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6370/292/1057025420/64655/f87644e3/594a3a12N5b900606.jpg!q70.jpg","num":2,"pid":45,"price":2999,"pscid":39,"selected":0,"sellerid":1,"subhead":"高清双摄,就是清晰!2000+1600万高清摄像头,6GB大内存+高通骁龙835处理器,性能怪兽!","title":"一加手机5 (A5000) 6GB+64GB 月岩灰 全网通 双卡双待 移动联通电信4G手机"}],"sellerName":"商家1","sellerid":"1"},{"list":[{"bargainPrice":1599,"createtime":"2017-10-14T21:48:08","detailUrl":"https://item.m.jd.com/product/1993026402.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t5863/302/8961270302/97126/41feade1/5981c81cNc1b1fbef.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t7003/250/1488538438/195825/53bf31ba/5981c57eN51e95176.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5665/100/8954482513/43454/418611a9/5981c57eNd5fc97ba.jpg!q70.jpg","num":12,"pid":47,"price":111,"pscid":39,"selected":0,"sellerid":3,"subhead":"碳黑色 32GB 全网通 官方标配   1件","title":"锤子 坚果Pro 特别版 巧克力色 酒红色 全网通 移动联通电信4G手机 双卡双待 碳黑色 32GB 全网通"}],"sellerName":"商家3","sellerid":"3"},{"list":[{"bargainPrice":1999,"createtime":"2017-10-10T16:09:02","detailUrl":"https://item.m.jd.com/product/5025971.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t7210/232/3738666823/232298/9004583e/59c3a9a7N8de42e15.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t8356/82/2107423621/109733/c019b8c6/59c3a9a6Ne9a4bdd7.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t10219/74/25356012/171379/7d55e296/59c3a9a8N82fa6e02.jpg!q70.jpg","num":1,"pid":49,"price":333,"pscid":39,"selected":0,"sellerid":5,"subhead":"vivo X20 带你开启全面屏时代!逆光也清晰,照亮你的美!","title":"vivo X20 全面屏手机 全网通 4GB+64GB 金色 移动联通电信4G手机 双卡双待"}],"sellerName":"商家5","sellerid":"5"},{"list":[{"bargainPrice":11800,"createtime":"2017-10-03T23:53:28","detailUrl":"https://mitem.jd.hk/ware/view.action?wareId=1988853309&cachekey=1acb07a701ece8d2434a6ae7fa6870a1","images":"https://m.360buyimg.com/n0/jfs/t6130/97/1370670410/180682/1109582a/593276b1Nd81fe723.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5815/178/2614671118/51656/7f52d137/593276c7N107b725a.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5878/60/2557817477/30873/4502b606/593276caN5a7d6357.jpg!q70.jpg","num":1,"pid":62,"price":15999,"pscid":40,"selected":0,"sellerid":6,"subhead":"购买电脑办公部分商品满1元返火车票5元优惠券(返完即止)","title":"全球购 新款Apple MacBook Pro 苹果笔记本电脑 银色VP2新13英寸Bar i5/8G/256G"}],"sellerName":"商家6","sellerid":"6"},{"list":[{"bargainPrice":11800,"createtime":"2017-10-14T21:48:08","detailUrl":"https://mitem.jd.hk/ware/view.action?wareId=1988853309&cachekey=1acb07a701ece8d2434a6ae7fa6870a1","images":"https://m.360buyimg.com/n0/jfs/t6130/97/1370670410/180682/1109582a/593276b1Nd81fe723.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5698/110/2617517836/202970/c9388feb/593276b7Nbd94ef1f.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5815/178/2614671118/51656/7f52d137/593276c7N107b725a.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t5878/60/2557817477/30873/4502b606/593276caN5a7d6357.jpg!q70.jpg","num":1,"pid":68,"price":15000,"pscid":40,"selected":0,"sellerid":12,"subhead":"购买电脑办公部分商品满1元返火车票5元优惠券(返完即止)","title":"全球购 新款Apple MacBook Pro 苹果笔记本电脑 银色VP2新13英寸Bar i5/8G/256G"}],"sellerName":"商家12","sellerid":"12"}]
     */

    private String msg;
    private String code;
    private List<DataBean> data;

    public String getMsg() {
        return msg;
    }

    public void setMsg(String msg) {
        this.msg = msg;
    }

    public String getCode() {
        return code;
    }

    public void setCode(String code) {
        this.code = code;
    }

    public List<DataBean> getData() {
        return data;
    }

    public void setData(List<DataBean> data) {
        this.data = data;
    }

    public static class DataBean {
        /**
         * list : [{"bargainPrice":99,"createtime":"2017-10-14T21:38:26","detailUrl":"https://item.m.jd.com/product/4345173.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends","images":"https://m.360buyimg.com/n0/jfs/t6037/35/2944615848/95178/6cd6cff0/594a3a10Na4ec7f39.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6607/258/1025744923/75738/da120a2d/594a3a12Ne3e6bc56.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6370/292/1057025420/64655/f87644e3/594a3a12N5b900606.jpg!q70.jpg","num":2,"pid":45,"price":2999,"pscid":39,"selected":0,"sellerid":1,"subhead":"高清双摄,就是清晰!2000+1600万高清摄像头,6GB大内存+高通骁龙835处理器,性能怪兽!","title":"一加手机5 (A5000) 6GB+64GB 月岩灰 全网通 双卡双待 移动联通电信4G手机"}]
         * sellerName : 商家1
         * sellerid : 1
         */

        private String sellerName;
        private String sellerid;
        private List<ListBean> list;
        private boolean checked;

        public boolean isChecked() {
            return checked;
        }

        public void setChecked(boolean checked) {
            this.checked = checked;
        }

        public String getSellerName() {
            return sellerName;
        }

        public void setSellerName(String sellerName) {
            this.sellerName = sellerName;
        }

        public String getSellerid() {
            return sellerid;
        }

        public void setSellerid(String sellerid) {
            this.sellerid = sellerid;
        }

        public List<ListBean> getList() {
            return list;
        }

        public void setList(List<ListBean> list) {
            this.list = list;
        }

        public static class ListBean {
            /**
             * bargainPrice : 99.0
             * createtime : 2017-10-14T21:38:26
             * detailUrl : https://item.m.jd.com/product/4345173.html?utm#_source=androidapp&utm#_medium=appshare&utm#_campaign=t#_335139774&utm#_term=QQfriends
             * images : https://m.360buyimg.com/n0/jfs/t6037/35/2944615848/95178/6cd6cff0/594a3a10Na4ec7f39.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6607/258/1025744923/75738/da120a2d/594a3a12Ne3e6bc56.jpg!q70.jpg|https://m.360buyimg.com/n0/jfs/t6370/292/1057025420/64655/f87644e3/594a3a12N5b900606.jpg!q70.jpg
             * num : 2
             * pid : 45
             * price : 2999.0
             * pscid : 39
             * selected : 0
             * sellerid : 1
             * subhead : 高清双摄,就是清晰!2000+1600万高清摄像头,6GB大内存+高通骁龙835处理器,性能怪兽!
             * title : 一加手机5 (A5000) 6GB+64GB 月岩灰 全网通 双卡双待 移动联通电信4G手机
             */

            private double bargainPrice;
            private String createtime;
            private String detailUrl;
            private String images;
            private int num;
            private int pid;
            private double price;
            private int pscid;
            private int selected;
            private int sellerid;
            private String subhead;
            private String title;
            private boolean checked;

            public boolean isChecked() {
                return checked;
            }

            public void setChecked(boolean checked) {
                this.checked = checked;
            }
            public double getBargainPrice() {
                return bargainPrice;
            }

            public void setBargainPrice(double bargainPrice) {
                this.bargainPrice = bargainPrice;
            }

            public String getCreatetime() {
                return createtime;
            }

            public void setCreatetime(String createtime) {
                this.createtime = createtime;
            }

            public String getDetailUrl() {
                return detailUrl;
            }

            public void setDetailUrl(String detailUrl) {
                this.detailUrl = detailUrl;
            }

            public String getImages() {
                return images;
            }

            public void setImages(String images) {
                this.images = images;
            }

            public int getNum() {
                return num;
            }

            public void setNum(int num) {
                this.num = num;
            }

            public int getPid() {
                return pid;
            }

            public void setPid(int pid) {
                this.pid = pid;
            }

            public double getPrice() {
                return price;
            }

            public void setPrice(double price) {
                this.price = price;
            }

            public int getPscid() {
                return pscid;
            }

            public void setPscid(int pscid) {
                this.pscid = pscid;
            }

            public int getSelected() {
                return selected;
            }

            public void setSelected(int selected) {
                this.selected = selected;
            }

            public int getSellerid() {
                return sellerid;
            }

            public void setSellerid(int sellerid) {
                this.sellerid = sellerid;
            }

            public String getSubhead() {
                return subhead;
            }

            public void setSubhead(String subhead) {
                this.subhead = subhead;
            }

            public String getTitle() {
                return title;
            }

            public void setTitle(String title) {
                this.title = title;
            }
        }
    }
}




NewModel
public class NewModel {
    private NewsPresenter presenter;

    public NewModel(NewsPresenter presenter) {
        this.presenter = presenter;
    }
    public void getData(String uid , MultipartBody.Part file){
        Flowable<MessageBean> flowable = RetrofitUtils.getInstance().getService().getMusicList(uid, file);
        presenter.getNews(flowable);
    }
}



NewsPresenter
public class NewsPresenter implements BasePresenter{
    private NewsView inv;
    private DisposableSubscriber<MessageBean> disposableSubscriber;

    public void attachView(NewsView inv){
        this.inv = inv;
    }

    public void detachView(){
        // 当Activity销毁的时候取消订阅时间,防止内存泄漏
        if (disposableSubscriber != null) {
            if (disposableSubscriber.isDisposed()) {
                disposableSubscriber.dispose();
            }
        }
        if (inv!=null){
            inv = null;
        }
    }
    @Override
    public void getData(String uid, MultipartBody.Part file) {
        NewModel newModel = new NewModel(this);
        newModel.getData(uid,file);
    }
    public void getNews(Flowable<MessageBean> flowable) {
        disposableSubscriber = flowable.subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribeWith(new DisposableSubscriber<MessageBean>() {
                    @Override
                    public void onNext(MessageBean messageBean) {
                        if(messageBean!=null){
                            inv.onSuccess(messageBean);

                        }
                    }

                    @Override
                    public void onError(Throwable t) {
                        Log.e("zxz",t.getMessage());

                    }

                    @Override
                    public void onComplete() {

                    }
                });
    }


}



NewsView
public interface NewsView {
    void onSuccess(MessageBean messageBean);
}




RetrofitUtils

public class RetrofitUtils {
    private static volatile RetrofitUtils instance;
    private Retrofit retrofit;
    private ApiService apiService;


    private RetrofitUtils(){
        OkHttpClient client = new OkHttpClient();
        retrofit = new Retrofit.Builder()
                .client(client)
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .addConverterFactory(GsonConverterFactory.create())
                .baseUrl("http://120.27.23.105/file/")
                .build();
        apiService = retrofit.create(ApiService.class);
    }
    public static RetrofitUtils getInstance(){
        if (instance==null){
            synchronized (RetrofitUtils.class){
                if (null==instance){
                    instance = new RetrofitUtils();

                }
            }
        }
        return instance;

    }
    public ApiService getService(){
        return apiService;
    }

}



activity_main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:fresco="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.example.hongliang1510d20180104.MainActivity">

    <!--com.facebook.drawee.view.SimpleDraweeView
    fresco:placeholderImage="@mipmap/ic_launcher"-->
    <ImageView
        android:id="@+id/my_image_view"
        android:layout_width="130dp"
        android:layout_height="130dp"
        android:src="@mipmap/ic_launcher_round"
        android:layout_centerHorizontal="true"
        />

    <LinearLayout
        android:layout_alignParentBottom="true"
        android:layout_width="match_parent"
        android:orientation="vertical"
        android:layout_height="wrap_content">
        <Button
            android:id="@+id/btn_xiangji"
            android:text="相机"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
        <Button
            android:id="@+id/btn_xiangce"
            android:text="相册"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
        <Button
            android:id="@+id/btn_cancel"
            android:text="取消"
            android:layout_width="match_parent"
            android:layout_height="wrap_content" />
    </LinearLayout>



</RelativeLayout>

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