我尝试直接从我的应用程序(webview.apk)调用javascript函数,为了启动一个自动播放html5视频剪辑的脚本,我试图在webview loadURL之后添加它,但没有运气。< / p>
也许有人可以看看代码。我错过了什么?谢谢!
package tscolari.mobile_sample;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.webkit.WebChromeClient;
import android.media.MediaPlayer;
public class InfoSpotActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
WebView mainWebView = (WebView) findViewById(R.id.mainWebView);
WebSettings webSettings = mainWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
mainWebView.setWebChromeClient(new WebChromeClient());
mainWebView.setWebViewClient(new MyCustomWebViewClient());
mainWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
mainWebView.loadUrl("http://server.info-spot.net");
mainWebView.loadUrl("javascript:playVideo()");
}
private class MyCustomWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
}
答案 0 :(得分:5)
等待页面加载完成,然后执行webview.loadUrl(“javascript:playVideo()”);
private class MyCustomWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
public void onPageFinished(WebView view, String url) {
view.loadUrl("javascript:playVideo()");
}
}
答案 1 :(得分:0)
用于调用jsFunction的Kotlin代码并获取结果:
webView.webViewClient = object : WebViewClient() {
//....
override fun onPageFinished(view: WebView, url: String) {
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
view.evaluateJavascript("jsFunction();", null)
} else {
view.loadUrl("jsFunction();")
//view.loadUrl("javascript:alert('Hamed');")
}
}
//...
}
如果您的函数返回一些值(json,..),并且您需要捕获回调,请使用以下代码:
view.evaluateJavascript("jsFunction();") {
Log.i("TestJavaScript", "ValueCallBack=$it")
}