RxDownload

先导依赖

compile 'zlc.season:rxdownload:1.1.1'

清单文件

<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" />

Activity代码

package com.example.cll.caolilu1508b20171113;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;

import rx.Subscriber;
import rx.Subscription;
import rx.android.schedulers.AndroidSchedulers;
import rx.schedulers.Schedulers;
import zlc.season.rxdownload.DownloadStatus;
import zlc.season.rxdownload.RxDownload;

public class Main2Activity extends AppCompatActivity implements View.OnClickListener {

    /**
     * 下载
     */
    private Button mXaizai;
    /**
     * 暂停
     */
    private Button mZanting;
    private ProgressBar mJindu;
    /**
     * 下载:0%
     */
    private TextView mTvInfo;
    private   String uri = "http://mirror.aarnet.edu.au/pub/TED-talks/911Mothers_2010W-480p.mp4";
    private String name="cllshipin";
    private String dizhi;
    private Subscription subscription;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        initView();


    }

    private void initView() {
        mXaizai = (Button) findViewById(R.id.xaizai);
        mXaizai.setOnClickListener(this);
        mZanting = (Button) findViewById(R.id.zanting);
        mZanting.setOnClickListener(this);
        mJindu = (ProgressBar) findViewById(R.id.jindu);
        mTvInfo = (TextView) findViewById(R.id.tv_info);
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.xaizai:
                mXaizai.setEnabled(false);
                mZanting.setEnabled(true);
                subscription = RxDownload.getInstance()
                        .maxThread(20)
                        .maxRetryCount(5)
                        .download(uri,name,dizhi)
                        .subscribeOn(Schedulers.io())
                        .observeOn(AndroidSchedulers.mainThread())
                        .subscribe(new Subscriber() {
                            @Override
                            public void onCompleted() {

                            }

                            @Override
                            public void onError(Throwable e) {

                            }

                            @Override
                            public void onNext(DownloadStatus downloadStatus) {
                                String percent = downloadStatus.getPercent();
                                mTvInfo.setText("下载:"+percent);
                                long totalSize = downloadStatus.getTotalSize();
                                mJindu.setMax((int) totalSize);
                                long downloadSize = downloadStatus.getDownloadSize();
                                mJindu.setProgress((int) downloadSize);
                            }
                        });
                break;
            case R.id.zanting:

                mXaizai.setEnabled(true);
                mZanting.setEnabled(false);
                //...//取消订阅, 即可暂停下载, 若服务端不支持断点续传,下一次下载会重新下载,反之会继续下载
                if (subscription != null && !subscription.isUnsubscribed()) {
                    subscription.unsubscribe();
                }
                break;
        }
    }
}
布局文件

xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.cll.caolilu1508b20171113.Main2Activity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="下载地址"/>
    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/xaizai"
            android:text="下载"
            android:onClick="download"/>
        <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/zanting"
            android:onClick="pause"
            android:text="暂停"/>
    LinearLayout>
    <ProgressBar
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/jindu"
        style="@android:style/Widget.ProgressBar.Horizontal"    />
    <TextView
        android:id="@+id/tv_info"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:text="下载:0%" />
LinearLayout>