Android应用程序意外关闭

时间:2011-02-24 04:03:10

标签: android webview

我使用以下代码下载文件。它运行正常,但是当我单击下载按钮时,出现以下错误:“应用程序mibooks意外停止。”

如何在我的代码中解决此问题?

package mds.mibooks;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.webkit.DownloadListener;
import android.webkit.WebSettings;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Button;


public class mibooks extends Activity {
    WebView mWebView;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        final Button button = (Button) findViewById(R.id.button1);
        button.setOnClickListener(new OnClickListener() {
            public void onClick(View v) {
                 setContentView(R.layout.webview);

                 WebView myWebView = (WebView) findViewById(R.id.webView1);
                 WebSettings webSettings = myWebView.getSettings();
                 WebView myWebView1 = (WebView) findViewById(R.id.webView1);
                 myWebView1.setWebViewClient(new WebViewClient());
                 webSettings.setJavaScriptEnabled(true);


                /* WebView webView = (WebView) findViewById(R.id.webView1);
                 webView.addJavascriptInterface(new JavaScriptInterface(this), "Android");
                */

            //   String summary = "<html><body>You scored <b>192</b> points.</body></html>";
                // myWebView1.loadData(summary, "text/html", "utf-8");
                 myWebView1.loadUrl("http://www.mibooks.com/beta/");


                 myWebView1.setDownloadListener(new DownloadListener() {
                        public void onDownloadStart(String url, String userAgent,
                                String contentDisposition, String mimetype,
                                long contentLength) {
                            Intent intent = new Intent(Intent.ACTION_VIEW);
                             intent.setData(Uri.parse("www.google.com"));
                   intent.setType("*zip*"); 
                            startActivity(intent);

                        }
                    });

            }    
        });
    }
}

2 个答案:

答案 0 :(得分:1)

Android应用程序意外停止当发生任何运行时错误时,这是​​android编程中的正常情况。当我抛出这个问题时,我并没有意识到这一点。我得到了这个问题的解决方案..  1. setContentView(R.layout.webview);和setContentView(R.layout.main);一个布局指向null。

答案 1 :(得分:1)

也许安装ADT插件?见这里: - Cannot Make Andoid Apps Work