我在啓動時運行我的應用程序時做了什麼錯誤？

Question

我只是想讓我的webview應用程序在Android設備的啓動時運行。我已經遵循了in this post提到的每一個步驟，但是它不會在設備啓動時運行。我在這裏錯過了什麼？

public class BootUpReceiver extends BroadcastReceiver { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
     try { 
      Toast.makeText(context, "Start Up", Toast.LENGTH_LONG).show(); 

      Intent serviceIntent = new Intent(context, 
        MainActivity.class) 
        .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK); 
      context.startActivity(serviceIntent); 
     } catch (Exception e) { 
      Toast.makeText(context, "Start Up not possible!", Toast.LENGTH_LONG).show(); 
     } 
    } 

公共類MainActivity擴展ActionBarActivity {

private WebView mWebView; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    mWebView = (WebView) findViewById(R.id.activity_main_webview); 
    // Enable Javascript 
    WebSettings webSettings = mWebView.getSettings(); 
    webSettings.setJavaScriptEnabled(true); 
    // Force links and redirects to open in the WebView instead of in a browser 
    mWebView.setWebViewClient(new WebViewClient()); 


    mWebView.loadUrl("http://www.google.com/"); 
    //Note: To detect when a URL has started and finished loading, use WebViewClient.onPageStarted and WebViewClient.onPageFinished. 
} 


@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.menu_main, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // Handle action bar item clicks here. The action bar will 
    // automatically handle clicks on the Home/Up button, so long 
    // as you specify a parent activity in AndroidManifest.xml. 
    int id = item.getItemId(); 

    //noinspection SimplifiableIfStatement 
    if (id == R.id.action_settings) { 
     return true; 
    } 

    return super.onOptionsItemSelected(item); 
} 

/** 
* A placeholder fragment containing a simple view. 
*/ 
public static class PlaceholderFragment extends Fragment { 

    public PlaceholderFragment() { 
    } 

    @Override 
    public View onCreateView(LayoutInflater inflater, ViewGroup container, 
          Bundle savedInstanceState) { 
     View rootView = inflater.inflate(R.layout.fragment_main, container, false); 
     return rootView; 
    } 
} 

}

，這裏是清單

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.aa.webview1" > 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 
     <activity 
      android:name=".MainActivity" 
      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> 
    <uses-permission android:name="android.permission.INTERNET" /> 

    <uses-permission android:name="android.permission.ACCESS_GPS" /> 
    <uses-permission android:name="android.permission.ACCESS_ASSISTED_GPS" /> 
    <uses-permission android:name="android.permission.ACCESS_LOCATION" /> 
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" /> 
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" /> 


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

    <receiver android:name=".BootUpReceiver"> 
     <intent-filter > 
      <action android:name="android.intent.action.BOOT_COMPLETED"/> 
     </intent-filter> 
    </receiver> 


</manifest> 

Answer 1

您的接收器是您的應用程序的元素，它應該是裏面

<receiver android:name=".BootUpReceiver"> // i am suppose to be a child of the application 
    <intent-filter > 
     <action android:name="android.intent.action.BOOT_COMPLETED"/> 
    </intent-filter> 
</receiver> 
</application> // clossing application element 

更多信息檢查here，and here