[英]How to download files from a webview and open playstore from webview
我搜索了其他問題,以了解如何從WebView
下載文件。
我希望能夠使用網站下載文件,並且還允許用戶從WebView
打開Playstore。 例如,某些網站從其應用程序中獲得一個鏈接或一個廣告,該鏈接或廣告會打開對話框以使用Playstore或瀏覽器打開。 我該怎么做?
下面是我的代碼:
import android.os.Build;
import android.os.Bundle;
import android.view.KeyEvent;
import android.webkit.CookieManager;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.webkit.GeolocationPermissions;
import android.webkit.WebChromeClient;
import android.app.Activity;
import android.webkit.DownloadListener;
import android.app.DownloadManager.Request;
import android.app.DownloadManager;
import android.os.Environment;
import android.net.Uri;
public class MainActivity extends Activity {
private WebView mWebView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Allow third party cookies for Android Lollipop
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mWebView = (WebView) findViewById(R.id.activity_main_webview);
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.setAcceptThirdPartyCookies(mWebView,true);
}
mWebView = (WebView) findViewById(R.id.activity_main_webview);
mWebView.setWebViewClient(new WebViewClient());
mWebView.getSettings().setGeolocationEnabled(true);
mWebView.setWebChromeClient(new WebChromeClient() {
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
// callback.invoke(String origin, boolean allow, boolean remember);
callback.invoke(origin, true, false);
}
});
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setAppCacheEnabled(true);
mWebView.getSettings().setDatabaseEnabled(true);
mWebView.getSettings().setDomStorageEnabled(true);
mWebView.getSettings().setAllowFileAccess(true);
mWebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
mWebView.getSettings().setSupportMultipleWindows(true);
String appCachePath = getApplicationContext().getCacheDir().getAbsolutePath();
mWebView.getSettings().setAllowFileAccess(true);
mWebView.getSettings().setAppCachePath(appCachePath);
mWebView.loadUrl("http://www.mywebsite.com/");
mWebView.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent, String contentDisposition, String mimetype, long contentLength) {
//for downloading directly through download manager
Request request = new Request(Uri.parse(url));
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "download.mp3");
DownloadManager dm = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
dm.enqueue(request);
}
});
}
}
編輯:忘記提及它確實有效,但是在文件下載后,它說“無法打開文件”
您有哪些與“無法打開文件”相關的日志? 請提供與此有關的更多信息。
作為第一種方法,我建議添加缺少的內容:
request.setMimeType(mimeType);
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.