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DownloadUtils.java
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132 lines (118 loc) · 6.68 KB
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import android.app.DownloadManager;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Environment;
import android.widget.Toast;
public class DownloadUtils {
private Context mContext;
private String downloadFileName = "weiyan.apk";
private static long myReference;
private static DownloadManager downloadManager;
private DownloadManager.Request downloadRequest;
/**
* DownloadUtils downloadUtils = new DownloadUtils(activity, downloadUrl);
* //下载显示名字，不能是中文
* downloadUtil.setDownloadFileName("apkName" + System.currentTimeMillis() + ".apk");
* downloadUtil.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
* downloadUtil.start();
*/
public DownloadUtils(Context context, String downloadUrl) {
this.mContext = context;
initDownload(downloadUrl);
}
private void initDownload(String downloadUrl) {
downloadManager = (DownloadManager) mContext.getSystemService(Context.DOWNLOAD_SERVICE);
Uri uri = Uri.parse(downloadUrl);//"http://app.mi.com/download/25323"
downloadRequest = new DownloadManager.Request(uri);
// 设置目标存储在外部目录，一般位置可以用
downloadRequest.setDestinationInExternalFilesDir(mContext, Environment.DIRECTORY_DOWNLOADS, downloadFileName);
//下载的文件能被其他应用扫描到
downloadRequest.allowScanningByMediaScanner();
//设置被系统的Downloads应用扫描到并管理,默认true
downloadRequest.setVisibleInDownloadsUi(true);
//限定在WiFi还是手机网络(NETWORK_MOBILE)下进行下载
downloadRequest.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI);
// 设置mime类型，这里看服务器配置，一般国家化的都为utf-8编码。
downloadRequest.setMimeType("application/vnd.android.package-archive");
/**
* 设置notification显示状态
* Request.VISIBILITY_VISIBLE：在下载进行的过程中，通知栏中会一直显示该下载的Notification，当下载完成时，该Notification会被移除，这是默认的参数值。
* Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED：在下载过程中通知栏会一直显示该下载的Notification，在下载完成后该Notification会继续显示，直到用户点击该
* Notification或者消除该Notification。
* Request.VISIBILITY_VISIBLE_NOTIFY_ONLY_COMPLETION：只有在下载完成后该Notification才会被显示。
* Request.VISIBILITY_HIDDEN：不显示该下载请求的Notification。如果要使用这个参数，需要在应用的清单文件中加上android.permission.DOWNLOAD_WITHOUT_NOTIFICATION
*/
downloadRequest.setNotificationVisibility(DownloadManager.Request.VISIBILITY_HIDDEN);
//设置notification的标题
downloadRequest.setTitle("");
//设置notification的描述
downloadRequest.setDescription("");
}
public void start() {
myReference = downloadManager.enqueue(downloadRequest);
}
/**
* 须static，不然在manife注册时报错：java.lang.InstantiationException has no zero argument constructor
* 或者must be registered and unregistered inside the Parent class
*/
public static class DownloadManagerReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
//Notification点击
if (intent.getAction().equals(DownloadManager.ACTION_NOTIFICATION_CLICKED)) {
String extraID = DownloadManager.EXTRA_NOTIFICATION_CLICK_DOWNLOAD_IDS;
long[] references = intent.getLongArrayExtra(extraID);
for (long reference : references)
if (reference == myReference) {
}
}
//下载完成
if (intent.getAction().equals(DownloadManager.ACTION_DOWNLOAD_COMPLETE)) {
long completeDownloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
if (completeDownloadId == myReference) {
Cursor cursor = downloadManager.query(new DownloadManager.Query()
.setFilterById(completeDownloadId));
cursor.moveToFirst();
String filePath = cursor.getString(cursor.getColumnIndex(DownloadManager.COLUMN_LOCAL_URI));
cursor.close();
if (filePath != null) {
if (filePath.contains(context.getPackageName())) {
AppUtils.installAPK(context, filePath.trim().substring(7));
}
} else {
Toast.makeText(context, "网络不给力", Toast.LENGTH_SHORT).show();
}
}
}
}
}
public void setDownloadFileName(String downloadFileName) {
// 设置目标存储在外部目录，一般位置可以用
downloadRequest.setDestinationInExternalFilesDir(mContext, Environment.DIRECTORY_DOWNLOADS, downloadFileName);
}
public void setNotificationTitle(CharSequence title) {
//设置notification的标题
downloadRequest.setTitle(title);
}
public void setNotificationDescription(CharSequence description) {
//设置notification的描述
downloadRequest.setDescription(description);
}
/**
* 设置notification显示状态
* Request.VISIBILITY_VISIBLE：在下载进行的过程中，通知栏中会一直显示该下载的Notification，当下载完成时，该Notification会被移除，这是默认的参数值。
* Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED：在下载过程中通知栏会一直显示该下载的Notification，在下载完成后该Notification会继续显示，直到用户点击该
* Notification或者消除该Notification。
* Request.VISIBILITY_VISIBLE_NOTIFY_ONLY_COMPLETION：只有在下载完成后该Notification才会被显示。
* Request.VISIBILITY_HIDDEN：不显示该下载请求的Notification。如果要使用这个参数，需要在应用的清单文件中加上android.permission.DOWNLOAD_WITHOUT_NOTIFICATION
*/
public void setNotificationVisibility(int visibility) {
downloadRequest.setNotificationVisibility(visibility);
}
public DownloadManager.Request getDownloadRequest() {
return downloadRequest;
}
}