通過單擊列表視圖中的項目加載webview

Question

我想通過單擊ListView中的項目來加載WebView，但是當單擊項目時我的應用程序崩潰。

編輯：發佈現在的logcat：

E/AndroidRuntime(1840): FATAL EXCEPTION: main 
E/AndroidRuntime(1840): android.content.ActivityNotFoundException: Unable to find explicit activity class  {sport.news/sport.news.WebViewPage}; have you declared this activity in your AndroidManifest.xml? 
E/AndroidRuntime(1840): at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1508) 
E/AndroidRuntime(1840): at android.app.Instrumentation.execStartActivity(Instrumentation.java:1384) 
E/AndroidRuntime(1840): at android.app.Activity.startActivityForResult(Activity.java:3190) 
E/AndroidRuntime(1840): at android.app.Activity.startActivity(Activity.java:3297) 
E/AndroidRuntime(1840): at sport.news.SportnewsActivity.onListItemClick(SportnewsActivity.java:31) 
E/AndroidRuntime(1840): at android.app.ListActivityonItemClick(ListActivity.java:319) 
E/AndroidRuntime(1840): at android.widget.AdapterView.performItemClick(AdapterView.java:292) 
E/AndroidRuntime(1840): at android.widget.AbsListView.performItemClick(AbsListView.java:1083) 
E/AndroidRuntime(1840): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2539) 
E/AndroidRuntime(1840): at android.widget.AbsListViewrun(AbsListView.java:3193) 
E/AndroidRuntime(1840): at android.os.Handler.handleCallback(Handler.java:605) 
E/AndroidRuntime(1840): at android.os.Handler.dispatchMessage(Handler.java:92) 
E/AndroidRuntime(1840): at android.os.Looper.loop(Looper.java:137) 
E/AndroidRuntime(1840): at android.app.ActivityThread.main(ActivityThread.java:4424) 
E/AndroidRuntime(1840): at java.lang.reflect.Method.invokeNative(Native Method) 
E/AndroidRuntime(1840): at java.lang.reflect.Method.invoke(Method.java:511) 
E/AndroidRuntime(1840): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 
E/AndroidRuntime(1840): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 
E/AndroidRuntime(1840): at dalvik.system.NativeStart.main(Native Method) 
W/ActivityManager(187): Force finishing activity sport.news/.SportnewsActivity 

主要活動：

package sport.news; 
import android.app.ListActivity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 

public class SportnewsActivity extends ListActivity { 
String[] DayOfWeek = {"Sunday", "Monday", "Tuesday", 
      "Wednesday", "Thursday", "Friday", "Saturday" 
     }; 

      /** Called when the activity is first created. */ 
      @Override 
      public void onCreate(Bundle savedInstanceState) { 
       super.onCreate(savedInstanceState); 
       //setContentView(R.layout.main); 
       setListAdapter(new ArrayAdapter<String>(this, 
       R.layout.row, R.id.weekofday, DayOfWeek)); 
      } 

     @Override 
     protected void onListItemClick(ListView l, View v, int position, long id) { 
     // TODO Auto-generated method stub 
      //super.onListItemClick(l, v, position, id); 
      super.onListItemClick(l,v,position,id); 
      Intent in = new Intent(this,WebViewPage.class); 
      startActivity(in); 
     } 
     } 

而且的WebView活動：

package sport.news; 

import android.app.Activity; 
import android.os.Bundle; 
import android.webkit.WebView; 

public class WebViewPage extends Activity{ 

@Override 
public void onCreate(Bundle savedInstanceState){ 
super.onCreate(savedInstanceState); 
setContentView(R.layout.webviewpage); 
     WebView wbView = (WebView) findViewById(R.id.WebView); 
     wbView.getSettings().setJavaScriptEnabled(true); 
     wbView.loadUrl("http://www.google.com"); 
    } 
} 

下面是manifest.xml中：

---

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="sport.news" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk android:minSdkVersion="10" /> 

<application 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" > 
    <activity 
     android:name=".SportnewsActivity" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
</application> 

<activity android:name=".WebViewPage" /> 


<uses-permission android:name="android.permission.INTERNET" /> 

</manifest> 

Answer 1

之前，請聲明你的活動</application>標籤聲明你WebViewPage.class在你的清單文件。

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="sport.news" 
android:versionCode="1" 
android:versionName="1.0" > 

<uses-sdk android:minSdkVersion="10" /> 

<application 
    android:icon="@drawable/ic_launcher" 
    android:label="@string/app_name" > 
    <activity 
     android:name=".SportnewsActivity" 
     android:label="@string/app_name" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 

<activity android:name=".WebViewPage" /> 
</application> 

Answer 2

你有

<activity android:name=".WebViewPage"/> 

Answer 3

Intent i = new Intent(Intent.ACTION_VIEW); 
      Uri u = Uri.parse(websiteText.getText().toString()); 
      i.setData(u); 
      try { 
       startActivity(i); 
      } catch (ActivityNotFoundException e) { 
       Toast.makeText(PassEdit.this, R.string.invalid_website, Toast.LENGTH_SHORT).show(); 
      } 
     }