HelloWebView Sample: java.lang.SecurityException: Permission Denial

问题

I am trying to get the HelloWebView Sample up and running (as is, with no cuustomizations) found at

http://developer.android.com/resources/tutorials/views/hello-webview.html

I continue to get java.lang.SecurityException: Permission Denial despite all efforts. In my mind this has got to be some fundamental lack of understanding on my part (I am a newbie) or something perhaps local to my development environment (Windows XP).

I have included my main.xml, AndroidManifest.xml, and console output below.

Things tried so far:

different api's (6,7)
adding/verifying (I think :)) that "uses-permission android:name="android.permission.INTERNET"" has the correct syntax and location in my manifest.
wiping emulator
restarting eclipse, laptop etc.
disabling my internet security

Any help would be greatly appreciated.

Thank you. Tim

my main xml is:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<WebView
    android:id="@+id/webview"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"/>
</LinearLayout>

my manifest file is:

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

<application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".HelloWebView"
              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=".HelloWebView" android:label="@string/app_name"
 android:theme="@android:style/Theme.NoTitleBar">
    </activity> 

</application>

Actual console output:

 ------------------------------
[2010-06-04 07:57:06 - HelloWebView] Android Launch!
[2010-06-04 07:57:06 - HelloWebView] adb is running normally.
[2010-06-04 07:57:06 - HelloWebView] Performing com.example.hellowebview.HelloWebView activity launch
[2010-06-04 07:57:06 - HelloWebView] Automatic Target Mode: launching new emulator with compatible AVD 'AndroidGM2.1'
[2010-06-04 07:57:06 - HelloWebView] Launching a new emulator with Virtual Device 'AndroidGM2.1'
[2010-06-04 07:57:08 - HelloWebView] New emulator found: emulator-5554
[2010-06-04 07:57:08 - HelloWebView] Waiting for HOME ('android.process.acore') to be launched...
[2010-06-04 07:57:34 - HelloWebView] WARNING: Application does not specify an API level requirement!
[2010-06-04 07:57:34 - HelloWebView] Device API version is 7 (Android 2.1)
[2010-06-04 07:57:34 - HelloWebView] HOME is up on device 'emulator-5554'
[2010-06-04 07:57:34 - HelloWebView] Uploading HelloWebView.apk onto device 'emulator-5554'
[2010-06-04 07:57:35 - HelloWebView] Installing HelloWebView.apk...
[2010-06-04 07:57:46 - HelloWebView] Success!
[2010-06-04 07:57:47 - HelloWebView] Starting activity com.example.hellowebview.HelloWebView on device 
[2010-06-04 07:57:55 - HelloWebView] ActivityManager: Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.example.hellowebview/.HelloWebView }
[2010-06-04 07:57:55 - HelloWebView] ActivityManager: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 cmp=com.example.hellowebview/.HelloWebView } from null (pid=-1, uid=-1) requires null

回答1:

You have two entries in your manifest file for your HelloWebView activity. Try removing the second.

回答2:

Hi Tim this would exception is related to API Version, for example I use Android 1.5 so I add to my AndroidManifest.xml file

<uses-sdk android:minSdkVersion="3" />

check your messages output...

[2010-06-04 07:57:34 - HelloWebView] WARNING: Application does not specify an API level requirement! 
[2010-06-04 07:57:34 - HelloWebView] Device API version is 7 (Android 2.1)

I have realized that the problem is that you have defined two activities (HelloWebView) into your Manifest.xml, you have to remove one of them.

  <activity android:name=".HelloWebView"

来源：https://stackoverflow.com/questions/2974261/hellowebview-sample-java-lang-securityexception-permission-denial

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