本文使用DownloadManager下载，包含下载安装全过程。
1.下载
通过DownloadManager下载到安装包目录下/files/Download：
public void downloadApk(String url, String appname) {
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI); //设置在什么网络情况下进行下载 默认所有的 //
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE); //设置通知栏
request.setTitle(appname);
request.setDescription(appname + "正在下载");
request.setAllowedOverRoaming(false);
request.setDestinationInExternalFilesDir(App.me(), Environment.DIRECTORY_DOWNLOADS, appname + ".apk");
DownloadManager downManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
Long id = downManager.enqueue(request);//下载任务的id 建议存储用来查询任务
}
2.下载完成接收
定义广播接收器：
public class DownLoadCompleteReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)) {
long id = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
queryDownTask(DownloadManager.STATUS_SUCCESSFUL, id);//查询任务
} else if (intent.getAction().equals(DownloadManager.ACTION_NOTIFICATION_CLICKED)) {//通知栏点击
}
}
}
广播接收器注册：
我采用的动态注册，记得unRegisterReceiver(receiver)取消注册哦~
IntentFilter filter =new IntentFilter();
filter.addAction(DownloadManager.ACTION_NOTIFICATION_CLICKED);
filter.addAction(DownloadManager.ACTION_DOWNLOAD_COMPLETE);
context.registerReceiver(downLoadCompleteReceiver, filter);
查询下载任务：
private void queryDownTask(int status, long id) {
DownloadManager.Query query = new DownloadManager.Query();
query.setFilterByStatus(status);
query.setFilterById(id);
Cursor cursor = downManager.query(query);
while (cursor.moveToNext()) {
String downId = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_ID));
String title = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_TITLE));
String address = "";
//注意：这样7.0以上取出来的是file:///开头
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
address = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
} else {
address = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_FILENAME));
}
String statuss = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS));
String size = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR));
String sizeTotal = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));
Map<String, String> map = new HashMap<String, String>();
map.put("downid", downId);
map.put("title", title);
map.put("address", address);
map.put("status", statuss);
//开始根据address进行安装----
}
cursor.close();
}
3.安装
在7.0以上的安装需要获取安装未知应用权限，还需要通过FileProvider拿到content:/开始的地址。
