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
Kotlin溶液
所有答案都是在该url的默认应用程序中打开该url。我想总是在浏览器中打开任何url。我需要一些kotlin的解决方案,并实现了下面的代码。
fun getPackageNameForUrl(context: Context, url: String): String? {
val intent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
val resolveInfo = context.packageManager.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY)
return resolveInfo?.activityInfo?.packageName
}
fun openInBrowser(context: Context, url: String) {
val intent = Intent(Intent.ACTION_VIEW, Uri.parse(url))
val packageName = getPackageNameForUrl(context, "http://")
packageName?.takeIf {
it == "android"
}?.let { intent.setPackage(defaultBrowserPackageName); }
startActivity(context, intent, null)
}
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)
}