我想在我的WebView片段中实现一个代码,以回到之前的页面。我找到了一个解决方案here,但我不知道在我的WebView片段中将它添加到何处。有人可以帮我弄这个吗?我应该将它添加到MainActivity还是我的WebView片段中?
MyWebViewFragment.java:
package tkr.firstprojects.com.tkr;
import android.app.Fragment;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.webkit.WebBackForwardList;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class MyWebViewFragment extends Fragment {
WebView webview;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.web_fragment, container,
false);
Bundle bundle = getArguments();
String url = bundle.getString("url");
webview = (WebView) rootView.findViewById(R.id.webView1);
WebSettings settings = webview.getSettings();
settings.setJavaScriptEnabled(true);
settings.setBuiltInZoomControls(true);
settings.setSupportZoom(true);
webview.loadUrl(url);
webview.setWebViewClient(new WebViewClient() {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
return rootView;
}
}
这是我想从解决方案中添加的代码,以回到之前的页面。我应该在哪里添加这个?
webView.setOnKeyListener(new OnKeyListener()
{
@Override
public boolean onKey(View v, int keyCode, KeyEvent event)
{
if(event.getAction() == KeyEvent.ACTION_DOWN)
{
WebView webView = (WebView) v;
switch(keyCode)
{
case KeyEvent.KEYCODE_BACK:
if(webView.canGoBack())
{
webView.goBack();
return true;
}
break;
}
}
return false;
}
});
答案 0 :(得分:1)
在片段活动中
@Override
public void onBackPressed() {
//Get fragment and webview from the fragment
webview.goBack();
}