如何从内置web浏览器而不是应用程序中的代码打开URL?
我试过了:
try {
Intent myIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(download_link));
startActivity(myIntent);
} catch (ActivityNotFoundException e) {
Toast.makeText(this, "No application can handle this request."
+ " Please install a webbrowser", Toast.LENGTH_LONG).show();
e.printStackTrace();
}
但我有个例外:
No activity found to handle Intent{action=android.intent.action.VIEW data =www.google.com
就像其他人写的解决方案一样(效果很好),我想回答同样的问题,但我认为大多数人更愿意使用一个提示。
如果您希望在新任务中开始打开应用程序,独立于您自己,而不是停留在同一堆栈中,您可以使用以下代码:
final Intent intent=new Intent(Intent.ACTION_VIEW,Uri.parse(url));
intent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY|Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET|Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
startActivity(intent);
还有一种方法可以在Chrome自定义选项卡中打开URL。Kotlin示例:
@JvmStatic
fun openWebsite(activity: Activity, websiteUrl: String, useWebBrowserAppAsFallbackIfPossible: Boolean) {
var websiteUrl = websiteUrl
if (TextUtils.isEmpty(websiteUrl))
return
if (websiteUrl.startsWith("www"))
websiteUrl = "http://$websiteUrl"
else if (!websiteUrl.startsWith("http"))
websiteUrl = "http://www.$websiteUrl"
val finalWebsiteUrl = websiteUrl
//https://github.com/GoogleChrome/custom-tabs-client
val webviewFallback = object : CustomTabActivityHelper.CustomTabFallback {
override fun openUri(activity: Activity, uri: Uri?) {
var intent: Intent
if (useWebBrowserAppAsFallbackIfPossible) {
intent = Intent(Intent.ACTION_VIEW, Uri.parse(finalWebsiteUrl))
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_NO_HISTORY
or Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET or Intent.FLAG_ACTIVITY_MULTIPLE_TASK)
if (!CollectionUtil.isEmpty(activity.packageManager.queryIntentActivities(intent, 0))) {
activity.startActivity(intent)
return
}
}
// open our own Activity to show the URL
intent = Intent(activity, WebViewActivity::class.java)
WebViewActivity.prepareIntent(intent, finalWebsiteUrl)
activity.startActivity(intent)
}
}
val uri = Uri.parse(finalWebsiteUrl)
val intentBuilder = CustomTabsIntent.Builder()
val customTabsIntent = intentBuilder.build()
customTabsIntent.intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_NO_HISTORY
or Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET or Intent.FLAG_ACTIVITY_MULTIPLE_TASK)
CustomTabActivityHelper.openCustomTab(activity, customTabsIntent, uri, webviewFallback)
}
在Android 11中打开URL链接的新的更好方法。
try {
val intent = Intent(ACTION_VIEW, Uri.parse(url)).apply {
// The URL should either launch directly in a non-browser app
// (if it’s the default), or in the disambiguation dialog
addCategory(CATEGORY_BROWSABLE)
flags = FLAG_ACTIVITY_NEW_TASK or FLAG_ACTIVITY_REQUIRE_NON_BROWSER or
FLAG_ACTIVITY_REQUIRE_DEFAULT
}
startActivity(intent)
} catch (e: ActivityNotFoundException) {
// Only browser apps are available, or a browser is the default app for this intent
// This code executes in one of the following cases:
// 1. Only browser apps can handle the intent.
// 2. The user has set a browser app as the default app.
// 3. The user hasn't set any app as the default for handling this URL.
openInCustomTabs(url)
}
参考文献:
https://medium.com/androiddevelopers/package-visibility-in-android-11-cc857f221cd9和https://developer.android.com/training/package-visibility/use-cases#avoid-a-消除歧义对话框
Webview可用于在应用程序中加载Url。用户可以在文本视图中提供URL,也可以对其进行硬编码。
也不要忘记AndroidManifest中的互联网权限。
String url="http://developer.android.com/index.html"
WebView wv=(WebView)findViewById(R.id.webView);
wv.setWebViewClient(new MyBrowser());
wv.getSettings().setLoadsImagesAutomatically(true);
wv.getSettings().setJavaScriptEnabled(true);
wv.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
wv.loadUrl(url);
private class MyBrowser extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}