When I loaded the webpage on the project today, I found that one could not be loaded, emmm, I looked at the previous projects, and found that there were more than one omissions, so I will make a summary here.
1. Permission configuration: Make sure to add network permissions in the AndroidManifest.xml file:
<uses-permission android:name="android.permission.INTERNET" />
2. WebView settings: Check the relevant settings of WebView to ensure that JavaScript is enabled and the ability to load remote content:
webView.settings.javaScriptEnabled = true
webView.settings.loadsImagesAutomatically = true
Some projects can be loaded without adding this before, but it’s okay to add it
3. Listen for errors: Create a WebViewClient and set it to WebView to handle page loading and errors:
webView.webViewClient = object : WebViewClient() {
override fun onPageFinished(view: WebView?, url: String?) {
// 页面加载完成后的处理
}
override fun onReceivedError(
view: WebView?,
errorCode: Int,
description: String?,
failingUrl: String?
) {
// 页面加载错误的处理
}
}
4. Check the network connection: Make sure the device is connected to the Internet normally and can access the loaded webpage.
Check web links: Make sure that the loaded web links are correct and there are no redirects or access restrictions.
my code:
class PrivacyActivity : AppCompatActivity() {
private lateinit var webView: WebView
private lateinit var close: AppCompatImageView
@SuppressLint("SetJavaScriptEnabled")
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.layout_privacy)
ImmersionBar.with(this).fullScreen(false).navigationBarColor(R.color.transparent)
.statusBarColor(R.color.transparent).init()
webView = findViewById(R.id.icon_webview)
close = findViewById(R.id.icon_back)
webView.canGoBack()
webView.settings.javaScriptEnabled = true
webView.settings.loadsImagesAutomatically = true
webView.webViewClient = object : WebViewClient() {
override fun shouldOverrideUrlLoading(
view: WebView?, request: WebResourceRequest?
): Boolean {
view?.loadUrl("https://blog.csdn.net/LoveFHM?type=blog")
return true
}
}
webView.loadUrl("https://blog.csdn.net/LoveFHM?type=blog")
close.setOnClickListener { finish() }
}
override fun onDestroy() {
webView.loadDataWithBaseURL(null, "", "text/html", "utf-8", null)
webView.clearHistory()
(webView.parent as ViewGroup).removeView(webView)
webView.destroy()
super.onDestroy()
}
override fun onKeyDown(keyCode: Int, event: KeyEvent?): Boolean {
if (keyCode == KeyEvent.KEYCODE_BACK && webView.canGoBack()) {
webView.goBack()
return true
}
return super.onKeyDown(keyCode, event);
}
}