android webview客户端活动指示器
我得到了在web视图中显示活动指示器的代码。我检查了多个参考文献,但仍然无法正常工作。你能帮我调试我的代码吗?android webview客户端活动指示器
活性指示器不与下面的代码来下面代码
protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub
super.onCreate(savedInstanceState);
this.getWindow().requestFeature(Window.FEATURE_PROGRESS);
final BaseActivity MyActivity = ReviewWebActivity.this;
setContentView(R.layout.review_web);
getWindow().setFeatureInt(Window.FEATURE_PROGRESS,
Window.PROGRESS_VISIBILITY_ON);
ScannedProduct product = getReviewUrl();
reviewUrl = product.getReviewLink();
if (reviewUrl == null) {
String err = product.getErrorCode();
if(err.equals("")) err ="No Data Available for this product";
Toast.makeText(getApplicationContext(),
"No Data Available for this product", 1).show();
return;
}
webReview = (WebView) findViewById(R.id.webReview);
webReview.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
// Make the bar disappear after URL is loaded, and changes
// string to Loading...
MyActivity.setTitle("Loading...");
MyActivity.setProgress(progress * 1000); // tried with 100 also
}
});
webReview.setWebViewClient(new ReviewWebClient());
webReview.getSettings().setJavaScriptEnabled(true);
webReview.loadUrl(reviewUrl);
}
回答:
import android.app.Activity; import android.app.ProgressDialog;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class SandbarinFacebook extends Activity {
WebView mWebView;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
final ProgressDialog pd = ProgressDialog.show(this, "", "Loading...",true);
mWebView = (WebView) findViewById(R.id.webkitWebView1);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setSupportZoom(true);
mWebView.getSettings().setBuiltInZoomControls(true);
mWebView.setWebViewClient(new WebViewClient() {
@Override
public void onPageFinished(WebView view, String url) {
if(pd!=null && pd.isShowing())
{
pd.dismiss();
}
}
});
mWebView.loadUrl("http://www.yahoo.co.in");
setTitle("Yahoo!");
}
}
回答:
写在活动的onCreate
方法。
webView.setWebChromeClient(new ChromeClient()); progress=ProgressDialog.show(this, "", "Loading...");
webView.loadUrl(url);
创建ChromeClient
类在同一活动。
private class ChromeClient extends WebChromeClient { @Override
public void onProgressChanged(WebView view, int newProgress) {
if(newProgress >= 85) {
progress.dismiss();
}
super.onProgressChanged(view, newProgress);
}
}
相应地声明对象。回到我身边如果你仍然面临错误。我将提供完整的源代码。
回答:
我无法发表评论,因为我没有足够的声望点,只是对已接受的答案进行了快速评论:在检查对话框是否显示之前检查是否为空。这将避免可怕的NPE。
if(pd != null && pd.isShowing()) { ... }
以上是 android webview客户端活动指示器 的全部内容, 来源链接: utcz.com/qa/261433.html