Android DownloadManager 下载完成并安装

DownloadManager 下载完成并安装

话说blog还是要坚持写的。仅仅是一个态度的问题 …….

DownloadManager 是Android系统提供的一个很好用的下载类。通过此类可以很方便的下载文件并在通知栏显示进度，不用再重写通知栏。所以记录一下使用方法与一些技巧。望批判

直接上代码吧

public void download(String downloadUrl) {
DownloadManager manager = (DownloadManager) mContext
.getSystemService(Context.DOWNLOAD_SERVICE);
DownloadManager.Request request = new DownloadManager.Request(
Uri.parse(downloadUrl));
request.setDescription("更新APP");
request.allowScanningByMediaScanner();// 设置可以被扫描到
request.setVisibleInDownloadsUi(true);// 设置下载可见
request.setNotificationVisibility(
DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);//下载完成后通知栏任然可见
String fileName = downloadUrl.substring(downloadUrl.lastIndexOf("/"));// 解析fileName
request.setDestinationInExternalPublicDir(
Environment.DIRECTORY_DOWNLOADS, fileName);// 设置下载位置，sdcard/Download/fileName
long refernece = manager.enqueue(request);// 加入下载并取得下载ID
SharedPreferences sPreferences = mContext.getSharedPreferences(
"downloadplato", 0);
sPreferences.edit().putLong("plato", refernece).commit();//保存此次下载ID

}

获取并保存此次下载ID为了方便监听下载完成，并处理相关下载后的事情，比如下载一个app，为了提高用户体验就要自动弹出安装界面。这时候我们就要进行下载监听

DownLoadBroadcastReceiver.java

package com.android.browser;

import android.annotation.SuppressLint;
import android.app.DownloadManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.Uri;

import com.android.browser.core.LogUtils;
/**
* 下载完成广播监听：比如下载APP
*
* */
public class DownLoadBroadcastReceiver extends BroadcastReceiver {

@SuppressLint("NewApi")
public void onReceive(Context context, Intent intent) {
long myDwonloadID = intent.getLongExtra(
DownloadManager.EXTRA_DOWNLOAD_ID, -1);
LogUtils.i("下载完成 ID = " + myDwonloadID);
SharedPreferences sPreferences = context.getSharedPreferences(
"downloadplato", 0);
long refernece = sPreferences.getLong("plato", 0);
if (refernece == myDwonloadID) {
String serviceString = Context.DOWNLOAD_SERVICE;
DownloadManager dManager = (DownloadManager) context
.getSystemService(serviceString);
Intent install = new Intent(Intent.ACTION_VIEW);
Uri downloadFileUri = dManager
.getUriForDownloadedFile(myDwonloadID);
install.setDataAndType(downloadFileUri,
"application/vnd.android.package-archive");
install.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(install);
}

}

}

// 记得注册广播

完成 Thank you . 谢谢