【移动应用开发技术】Android中如何使用retrofit上传文件

【移动应用开发技术】Android中如何使用retrofit上传文件

本篇文章为大家展示了Android中如何使用retrofit上传文件，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。1.AndroidMainfest.xml中加入权限

<uses-permission

android:name="android.permission.INTERNET"/>

<uses-permission

android:name="android.permission.READ_EXTERNAL_STORAGE"/>

<uses-permission

android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<uses-permission

android:name="android.permission.CAMERA"/>

<uses-permission

android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>添加依赖

//fresco

compile

'com.facebook.fresco:fresco:+'

//支持gif

compile

'com.facebook.fresco:animated-gif:+'

compile

'com.squareup.okhttp3:okhttp:3.9.1'

compile

'com.google.code.gson:gson:2.8.1'

//retrofit

compile

'com.squareup.retrofit2:retrofit:+'

compile

'com.squareup.retrofit2:converter-gson:+'

//Rxjava2

compile

'io.reactivex.rxjava2:rxjava:+'

compile

'io.reactivex.rxjava2:rxandroid:+'

//让retrofit支持Rxjava2

compile

'com.squareup.retrofit2:adapter-rxjava2:+'

compile

'com.squareup.okhttp3:logging-interceptor:3.9.1'1.网络请求public

class

RetrofitUtils

{

//自定义路径

public

static

final

String

BASE_URL

="05/";

private

final

Retrofit

mRetrofit;

public

static

class

SINGLE_HOLDER{

public

static

final

RetiofitUtils

INSTANCE

=

new

RetiofitUtils(BASE_URL);

}

public

static

RetrofitUtils

getInstance(){

return

SINGLE_HOLDER.INSTANCE;

}

r

private

RetrofitUtils(String

baseUrl){

mRetrofit

=

buildRetrofit();

}

//

private

OkHttpClient

buildOkHttpClient(){

HttpLoggingInterceptor

logging

=

new

HttpLoggingInterceptor();

logging.setLevel(HttpLoggingInterceptor.Level.BODY);

return

new

OkHttpClient.Builder()

.connectTimeout(10000,

TimeUnit.MILLISECONDS)

.addInterceptor(new

Intercept())//拦截器

.addInterceptor(logging)

.build();

}

//创建retrofit

private

Retrofit

buildRetrofit(){

return

new

Retrofit.Builder()

.client(buildOkHttpClient())

.baseUrl(BASE_URL)

.addConverterFactory(GsonConverterFactory.create())

.addCallAdapterFactory(RxJava2CallAdapterFactory.create())

.build();

}

//泛型类

public

<T>

T

create(Class<T>

tClass){

return

mRetrofit.create(tClass);

}

}拦截器：/article/133257.htm路径接口public

interface

RetiofitVpi

{

//查找用户信息

@GET("user/getUserInfo")

Observable<UserBean>

userBean(@Query("uid")

String

uid);

//上传文件

@Multipart

@POST("file/upload")

Observable<FileBean>

uploadFile(@Query("uid")

String

uid,

@Part("file\";

filename=\"avatar.jpg")

RequestBody

file);

}anim文件夹下的文件<!--android<set>标签代表一系列的帧动画,可以在里面添加动画效果

-->

<set

xmlns:android="/apk/res/android"

>

<translate

android:duration="2000"

android:fromYDelta="100%p"

android:toYDelta="0"

/>

<alpha

android:duration="2000"

android:fromAlpha="0.0"

android:toAlpha="1.0"

/>

</set><!--android<set>标签代表一系列的帧动画,可以在里面添加动画效果

-->

<set

xmlns:android="/apk/res/android"

>

<translate

android:duration="2000"

android:fromYDelta="100%p"

android:toYDelta="0"

/>

<alpha

android:duration="2000"

android:fromAlpha="0.0"

android:toAlpha="1.0"

/>

</set>布局<com.facebook.drawee.view.SimpleDraweeView

android:layout_centerInParent="true"

android:id="@+id/simple_drawee_view"

android:layout_width="300dp"

android:layout_height="300dp"

fresco:failureImage="@drawable/icon_failure"

fresco:progressBarImage="@drawable/icon_placeholder"

fresco:placeholderImage="@drawable/icon"

fresco:progressBarAutoRotateInterval="1000"

fresco:retryImageScaleType="centerInside"

fresco:roundAsCircle="true"

tools:layout_editor_absoluteY="41dp"

tools:layout_editor_absoluteX="55dp"

/>mainActiviy,请求要替换头像的接口的用户uidpublic

class

MainActivity

extends

AppCompatActivity

{

private

SimpleDraweeView

simple_drawee_view;

private

PopupWindow

window;

private

String

path;

private

Uri

uri;

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

//初始化

Fresco.initialize(this);

setContentView(R.layout.activity_main);

//获取到头像的布局

simple_drawee_view

=

(SimpleDraweeView)

findViewById(R.id.simple_drawee_view);

path

=

Environment.getExternalStorageDirectory()

+

"/head.jpg";

//获取uid

Observable<UserBean>

userInfo

=

userBean("3600");

userInfo

//需要在io子线程联网

.subscribeOn(Schedulers.io())

//需要在主线程更新UI

.observeOn(AndroidSchedulers.mainThread())

.subscribe(new

Consumer<UserBean>()

{

@Override

public

void

accept(UserBean

nicknameBean)

throws

Exception

{

UserBean.DataBean

data

=

nicknameBean.getData();

uri

=

Uri.parse(data.getIcon());

simple_drawee_view.setImageURI(uri);

}

},

new

Consumer<Throwable>()

{

@Override

public

void

accept(Throwable

throwable)

throws

Exception

{

Log.e("MainActivity",throwable.toString());

}

});

//给上传头像的控件设置点击事件

simple_drawee_view.setOnClickListener(new

View.OnClickListener()

{

@Override

public

void

on