相册,照相,附带上传下载

一步一步来:

AlertDialog.Builder builder = new AlertDialog.Builder(this);builder.setTitle("设置头像");String[] items = { "选择本地照片", "拍照" };builder.setNegativeButton("取消", null);builder.setItems(items, new DialogInterface.OnClickListener() {    @Override    public void onClick(DialogInterface dialog, int which) {        switch (which) {            case 0: // 选择本地照片                Intent intent1 = new Intent(Intent.ACTION_PICK);                intent1.setType("image/*");   //不截图时,加上intent.putExtra("return-data", true);                startActivityForResult(intent1, 101);                break;            case 1: // 拍照                // 这个出捕获图片的常量值                Intent intent2 = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                // 设置图片输出位置; 输出到制定的uri路径上;                intent2.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(sdcardPath+fileName)));                // 设置请求码                startActivityForResult(intent2, 100);                break;        }    }});builder.create().show();

回调方法:

@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {    super.onActivityResult(requestCode, resultCode, data);    if (requestCode == 100 && resultCode == RESULT_OK) {   //拍照        Uri uri = Uri.fromFile(new File(sdcardPath + fileName));        startPhotoZoom(uri);    } else if (requestCode == 101 && resultCode == RESULT_OK) {   //相册        // 获取data中的数据        Uri data2 = data.getData();        startPhotoZoom(data2);//不截图时,直接调用下两行的获取bitmap方式,再转为String,就好了,上传    } else if (requestCode == 102 && resultCode == RESULT_OK) {        //这个参数data,是固定写法        Bitmap bitmap = data.getParcelableExtra("data");        //转为String        String s = savePhoto(bitmap, Environment.getExternalStorageDirectory().getAbsolutePath(), String.valueOf(System.currentTimeMillis()));        //final String path = data.getData().getPath();        Map<String,Object> mapfile = new HashMap<>();   //这里用了网络请求,上传头像到服务器        mapfile.put("source","android");        mapfile.put("uid","3063");        mapfile.put("file",new File(s));        OKHttpFileUtil.getInstence().upFile(mapfile, new Callback() {            @Override            public void onFailure(Call call, IOException e) {                handler.post(new Runnable() {                    @Override                    public void run() {                        Log.e("MyDetail","上传失败");                    }                });            }            @Override            public void onResponse(Call call, Response response) throws IOException {                handler.post(new Runnable() {                    @Override                    public void run() {                        Log.e("MyDetail","上传成功");                        rp.postt(path, map, MyBean.class);                    }                });            }        });    }}

网络请求:

package com.example.jingdong.NewMVP.Utils;import com.example.jingdong.HttpUtils.OKHttpUtil;import java.io.File;import java.util.Map;import java.util.concurrent.TimeUnit;import okhttp3.Call;import okhttp3.Callback;import okhttp3.MediaType;import okhttp3.MultipartBody;import okhttp3.OkHttpClient;import okhttp3.Request;import okhttp3.RequestBody;/** * Created by Administrator on 2017/12/25 0025. */public class OKHttpFileUtil {    public final static String BASE_URL = "http://120.27.23.105/";    public final static String UPLOAD_FILE_ACTION = "file/upload";    public OkHttpClient okHttpClient;    public static volatile OKHttpFileUtil okHttpFileUtil;    public OKHttpFileUtil(){    }    public static OKHttpFileUtil getInstence(){        if(null==okHttpFileUtil){            synchronized (OKHttpUtil.class){                if(okHttpFileUtil==null){                    okHttpFileUtil = new OKHttpFileUtil();                }            }        }        return okHttpFileUtil;    }    public OkHttpClient getOKHttpCilent(){        okHttpClient = new OkHttpClient.Builder()                .readTimeout(10*1000, TimeUnit.SECONDS)                .writeTimeout(10*1000,TimeUnit.SECONDS)                .connectTimeout(10*1000,TimeUnit.SECONDS).build();        return okHttpClient;    }    public void upFile(Map<String,Object> map, Callback callback){        String url = String.format("%s%s",BASE_URL,UPLOAD_FILE_ACTION);        MultipartBody.Builder multiparbody = new MultipartBody.Builder();        multiparbody.setType(MultipartBody.FORM);        for(String key : map.keySet()){            Object o = map.get(key);            if(o instanceof String){                multiparbody.addFormDataPart(key,o.toString());            }else if(o instanceof File){                File file = (File) o;                multiparbody.addFormDataPart(key,file.getName(),MultipartBody.create(MediaType.parse("multipart/form-data"),file));            }        }        RequestBody requestBody = multiparbody.build();        Request request = new Request.Builder()                .url(url)                .post(requestBody)                .build();        Call call = getOKHttpCilent().newCall(request);        call.enqueue(callback);    }    public void downFile(Callback callback){        Request request = new Request.Builder()                .url("http://g.hiphotos.baidu.com/image/pic/item/908fa0ec08fa513d08b6a0ab376d55fbb2fbd9a3.jpg")                .get()                .build();        getOKHttpCilent().newBuilder().build().newCall(request).enqueue(callback);    }}

/** * 裁剪图片方法实现 * */protected void startPhotoZoom(Uri uri) {    if (uri == null) {        Log.e("tag", "The uri is not exist.");    }    Log.e("tag", uri.toString()+"");    Intent intent = new Intent("com.android.camera.action.CROP");    intent.setDataAndType(uri, "image/*");    // 设置裁剪    intent.putExtra("crop", "true");    // aspectX aspectY 是宽高的比例    intent.putExtra("aspectX", 1);    intent.putExtra("aspectY", 1);    // outputX outputY 是裁剪图片宽高    intent.putExtra("outputX", 150);    intent.putExtra("outputY", 150);    //intent.putExtra("outputFormat", "JPEG");// 图片格式    intent.putExtra("noFaceDetection", false);// 取消人脸识别    intent.putExtra("return-data", true);      //不截图时,intent加参数piuExtru加这行代码,直接获取bitmap对象    startActivityForResult(intent, 102);}

bitmap转为String方法:

public 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 + ".jpg");        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;}

在这里加个下载,在上边的OKHttpUtil中有个方法是下载图片,下载方法中的call的回调方法中加入如下代码:

@Overridepublic void onResponse(Call call, Response response) throws IOException {    if (response.isSuccessful()) {        String fileName = "/11111.jpg";        String sdcardPath = Environment.getExternalStorageDirectory().getPath();        final File file = new File(sdcardPath + fileName);        InputStream inputStream = response.body().byteStream();        FileOutputStream outputStream = new FileOutputStream(file);        byte[] buffer = new byte[2048];        int len = 0;        while ((len = inputStream.read(buffer)) != -1){            outputStream.write(buffer,0,len);        }        outputStream.flush();        outputStream.close();        inputStream.close();        handler.post(new Runnable() {            @Override            public void run() {                presenter.success(file.getPath());            }        });    }}