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试图清理一些过时的Twitter身份验证代码我一直使用作为新版本的android不允许在ui线程上完成网络任务而不会崩溃应用程序。在UI线程问题上运行的android webviewclient
我似乎通过坚持webview.loadurl()解决了一半的问题;调用异步任务,但应用程序在onLoadResource()时会在进程的第二部分崩溃;被webviewclient调用,只是不知道什么是放置onLoadResource()的最佳方式;方法转换为异步任务而不破坏代码。
package com.testapp2.second.activities;
import com.testapp2.second.OTweetApplication;
import com.testapp2.second.R;
import android.app.Activity;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebView;
import android.webkit.WebViewClient;
public class AuthorizationActivity extends Activity {
private OTweetApplication app;
private WebView webView;
private WebViewClient webViewClient = new WebViewClient() {
@Override
public void onLoadResource(WebView view, String url) {
// the URL we're looking for looks like this:
// http://otweet.com/authenticated?oauth_token=1234567890qwertyuiop
Uri uri = Uri.parse(url);
if (uri.getHost().equals("otweet.com")) {
String token = uri.getQueryParameter("oauth_token");
if (null != token) {
webView.setVisibility(View.INVISIBLE);
app.authorized();
finish();
} else {
// tell user to try again
}
} else {
super.onLoadResource(view, url);
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
app = (OTweetApplication)getApplication();
setContentView(R.layout.authorization_view);
setUpViews();
}
@Override
protected void onResume() {
super.onResume();
new AuthInBg().execute();
}
private void setUpViews() {
webView = (WebView)findViewById(R.id.web_view);
webView.setWebViewClient(webViewClient);
}
private class AuthInBg extends AsyncTask<Void, Void, Void> {
@Override
protected Void doInBackground(Void... arg0) {
String authURL = app.beginAuthorization();
webView.loadUrl(authURL);
return null;
}
}
}
我应该将异步任务结果更改为OnLoadResource()的构造函数;方法呢?