Android 調用手機自帶的下載器下載

親測有用，原文下載地址：

原文地址：https://blog.csdn.net/weixin_36554045/article/details/79108796

 

下面是原文：

建立一個廣播類

public class UpdataBroadcastReceiver extends BroadcastReceiver {

    @SuppressLint("NewApi")
    public void onReceive(Context context, Intent intent) {
        long myDwonloadID = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
        SharedPreferences sPreferences = context.getSharedPreferences("downloadcomplete", 0);
        long refernece = sPreferences.getLong("refernece", 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);
        }
    }

}

在AndroidManifest.xml中去註冊廣播

 

<receiver android:name=".updata.UpdataBroadcastReceiver">
    <intent-filter>
        <action android:name="android.intent.action.DOWNLOAD_COMPLETE" />
    </intent-filter>
</receiver>

最後就是咱們的下載方法

1.下載APP更新時

 

private void downloadAPK(String url) {
    DownloadManager dManager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
    Uri uri = Uri.parse(url);
    DownloadManager.Request request = new DownloadManager.Request(uri);
    // 設置下載路徑和文件名
    request.setDestinationInExternalPublicDir("xxx(路徑)", "xxx.apk");
    request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
    request.setMimeType("application/vnd.android.package-archive");
    // 設置爲可被媒體掃描器找到
    request.allowScanningByMediaScanner();
    // 設置爲可見和可管理
    request.setVisibleInDownloadsUi(true);
    long refernece = dManager.enqueue(request);
    // 把當前下載的ID保存起來
    SharedPreferences sPreferences = getSharedPreferences("downloadcomplete", 0);
    sPreferences.edit().putLong("refernece", refernece).commit();
}

2.下載其餘文件時

 

private void imageDownload(String downloadUrl) {
    DownloadManager dManager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
    Uri uri = Uri.parse(downloadUrl);
    DownloadManager.Request request = new DownloadManager.Request(uri);
    String[] urlname = downloadUrl.split("/");
    // 設置下載路徑和文件名
    request.setDestinationInExternalPublicDir("xxx(路徑)", urlname[urlname.length - 1]);
    // request.setDescription("DOTA2資料庫新版本下載");
    request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
    //request.setMimeType("application/vnd.android.package-archive");
    // 設置爲可被媒體掃描器找到
    request.allowScanningByMediaScanner();
    // 設置爲可見和可管理
    request.setVisibleInDownloadsUi(true);
    long refernece = dManager.enqueue(request);
}