I faced the same issue. I fixed it.

    flutter channel stable
    flutter upgrade
    flutter pub upgrade

**Edit:** This question was written in 2008, which was like 3 internet ages ago. If this question is still relevant to your environment, please accept my condolences. Everyone else should convert into a format [supported by your browsers](https://videojs.com/html5-video-support/) (That would be H.264 if Internet Explorer is needed, and probably AV1, VP8/VP9 if not) and use the [`&lt;video&gt;` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video).

---

We are using [WMV][1] videos on an internal site, and we are embedding them into web sites. This works quite well on Internet Explorer, but not on Firefox. I&#39;ve found ways to make it work in Firefox, but then it stops working in Internet Explorer.

We do not want to use Silverlight just yet, especially since we cannot be sure that all clients will be running Windows XP with Windows Media Player installed. 

Is there some sort of Universal Code that embeds WMP into both Internet Explorer and Firefox, or do we need to implement some user-agent-detection and deliver different HTML for different browsers?


  [1]: http://en.wikipedia.org/wiki/Windows_Media_Video

Embedding Windows Media Player for all browsers

I was figuring out how to do floor/ceiling operations without the `math` module. I solved this by using floor division `//`, and found out that the negative &quot;gives the ceiling&quot;. So this works:

```python
&gt;&gt;&gt; 3//2
1
&gt;&gt;&gt; -3//2
-2
```

I would like the answer to be positive, so first I tried `--3//2`, but this gives 1. I inferred this is because Python evaluates `--` to `+`. So to solve this, I found out I could use `-(-3//2))`, problem solved.

But I came over another solution to this, namely (I included the previous example for comparison):

```python
&gt;&gt;&gt; --3//2  # Does not give ceiling
1
&gt;&gt;&gt; 0--3//2  # Does give ceiling
2
```

I am unable to explain why including the 0 helps. I have read the documentation on division, but I did not find any help there. I thought it might be because of the evaluation order:

If I use `--3//2` as an example, from the documentation I have that `Positive, negative, bitwise NOT` is strictest in this example, and I guess this evaluates `--` to `+`. Next comes `Multiplication, division, remainder`, so I guess this is `+3//2` which evaluates to `1`, and we are finished. I am unable to infer it from the documentation why including `0` should change the result.

References:

- *[6.7. Binary arithmetic operations][1]*
- *[6.14. Evaluation order][2]*

  [1]: https://docs.python.org/3/reference/expressions.html#binary-arithmetic-operations
  [2]: https://docs.python.org/3.3/reference/expressions.html#evaluation-order








Why is there a difference between `0--3//2` and `--3//2`?

While trying to run any flutter project on Android Studio, I am getting this particular error :

    [+11147 ms] [+13655 ms] ../../flutter/.pub-cache/hosted/pub.dartlang.org/platform-3.0.2/lib/src/interface/local_platform.dart:46:19: Error: Member not found: &#39;packageRoot&#39;.
    [        ] [   +1 ms]       io.Platform.packageRoot; // ignore: deprecated_member_use
    [        ] [        ]                   ^^^^^^^^^^^

Looked on the net for quite a while but couldn&#39;t find any viable solution. Can anyone help with a fix?

&quot; Error: Member not found: &#39;packageRoot&#39; &quot; in Flutter

While trying to run any flutter project on Android Studio, I am getting this particular error :
<pre><code class="hljs language-scss">[+11147 ms] [+13655 ms] ../../flutter/.pub-cache/hosted/pub.dartlang.org/platform-3.0.2/lib/src/interface/local_platform.dart:46:19: Error: Member not found: 'packageRoot'.
[ ] [ +1 ms] io.Platform.packageRoot; // ignore: deprecated_member_use
[ ] [ ] ^^^^^^^^^^^
</code></pre>
Looked on the net for quite a while but couldn't find any viable solution. Can anyone help with a fix?

When trying to build my project I am getting the following error:

&gt; Could not GET \
&gt; &#39;https://jcenter.bintray.com/androidx/lifecycle/lifecycle-common/maven-metadata.xml&#39;. \
&gt; Received status code 502 from server: Bad Gateway

 - In my *build.gradle* repositories I don&#39;t have JCenter, so this error I&#39;m getting is from dependencies that are still pointing to JCenter.
 - Gradle offline mode is not the solution I&#39;m expecting.
 - I know that JCenter is down and that we should all move to Maven Central (I already did)

Is there a workaround?



jcenter.bintray.com is down Error: 502 Bad Gateway

I recently downloaded [Android Studio Bumblebee][1] and it helpfully asked whether I wanted to upgrade to Android Gradle Plugin 7.1.0, the version that shipped alongside Android Studio Bumblebee.

After upgrading, I get a build error:

```
Unable to load class &#39;com.android.build.api.extension.AndroidComponentsExtension&#39;.

This is an unexpected error. Please file a bug containing the idea.log file.
```

And looking at the `idea.log` file, I see:

```
A problem occurred evaluating project &#39;:main&#39;.
	at org.gradle.initialization.exception.DefaultExceptionAnalyser.transform(DefaultExceptionAnalyser.java:103)
	...
Caused by: org.gradle.api.GradleScriptException: A problem occurred evaluating project &#39;:main&#39;.
	at org.gradle.groovy.scripts.internal.DefaultScriptRunnerFactory$ScriptRunnerImpl.run(DefaultScriptRunnerFactory.java:93)
	...
Caused by: java.lang.NoClassDefFoundError: com/android/build/api/extension/AndroidComponentsExtension
	at androidx.navigation.safeargs.gradle.SafeArgsPlugin.apply(SafeArgsPlugin.kt:73)
	at androidx.navigation.safeargs.gradle.SafeArgsPlugin.apply(SafeArgsPlugin.kt:42)
	...
Caused by: java.lang.ClassNotFoundException: com.android.build.api.extension.AndroidComponentsExtension
```

Which means I can&#39;t run my app and I need to downgrade the AGP 7.0 to get things working again. How do I fix this and upgrade to Android Gradle Plugin 7.1.0?

  [1]: https://developer.android.com/studio/releases#bumblebee

Unable to load class AndroidComponentsExtension after upgrading the Android Gradle Plugin 7.1

I&#39;m working on the Flutter project. After I updated the version of the Android Studio when I click on the device manager to open my devices it doesn&#39;t show. I don&#39;t know what should I do?

At the first image it&#39;s gif image to explain what I mean.

[![enter image description here][1]][1]

I put the second image to show current version (Bumblebee).

[![enter image description here][2]][2]


  [1]: https://i.stack.imgur.com/nD9B6.gif
  [2]: https://i.stack.imgur.com/WkIn3.png

Why Device Manager don&#39;t open?

I&#39;ve just updated my flutter project packages to be null-safety compliant and now Android Studio wants me to update my project to use the latest version of Kotling Gradle Plugin. Can&#39;t see where to change this though. I have tried to change `&quot;org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version&quot;` into `&quot;org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.6.10&quot;` but this has no effect.

My `build.grade`-file looks like this:
```
def localProperties = new Properties()
def localPropertiesFile = rootProject.file(&#39;local.properties&#39;)
if (localPropertiesFile.exists()) {
    localPropertiesFile.withReader(&#39;UTF-8&#39;) { reader -&gt;
        localProperties.load(reader)
    }
}

def flutterRoot = localProperties.getProperty(&#39;flutter.sdk&#39;)
if (flutterRoot == null) {
    throw new GradleException(&quot;Flutter SDK not found. Define location with flutter.sdk in the local.properties file.&quot;)
}

def flutterVersionCode = localProperties.getProperty(&#39;flutter.versionCode&#39;)
if (flutterVersionCode == null) {
    flutterVersionCode = &#39;1&#39;
}

def flutterVersionName = localProperties.getProperty(&#39;flutter.versionName&#39;)
if (flutterVersionName == null) {
    flutterVersionName = &#39;1.0&#39;
}

apply plugin: &#39;com.android.application&#39;
apply plugin: &#39;kotlin-android&#39;
apply from: &quot;$flutterRoot/packages/flutter_tools/gradle/flutter.gradle&quot;

def keystoreProperties = new Properties()
def keystorePropertiesFile = rootProject.file(&#39;key.properties&#39;)
if (keystorePropertiesFile.exists()) {
    keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
}

android {
    compileSdkVersion 31

    sourceSets {
        main.java.srcDirs += &#39;src/main/kotlin&#39;
    }

    lintOptions {
        disable &#39;InvalidPackage&#39;
    }

    defaultConfig {
        // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html).
        applicationId &quot;*********&quot;
        minSdkVersion 30
        targetSdkVersion 30
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
        testInstrumentationRunner &quot;androidx.test.runner.AndroidJUnitRunner&quot;
    }



    signingConfigs {
        release {
            keyAlias keystoreProperties[&#39;keyAlias&#39;]
            keyPassword keystoreProperties[&#39;keyPassword&#39;]
            storeFile keystoreProperties[&#39;storeFile&#39;] ? file(keystoreProperties[&#39;storeFile&#39;]) : null
            storePassword keystoreProperties[&#39;storePassword&#39;]
        }
    }
    buildTypes {
        release {
            signingConfig signingConfigs.release
        }
    }

}

flutter {
    source &#39;../..&#39;
}

dependencies {
    implementation &quot;org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version&quot;
    testImplementation &#39;junit:junit:4.12&#39;
    androidTestImplementation &#39;androidx.test:runner:1.1.1&#39;
    androidTestImplementation &#39;androidx.test.espresso:espresso-core:3.1.1&#39;
    implementation &#39;com.google.firebase:firebase-analytics:17.2.2&#39;
}
apply plugin: &#39;com.google.gms.google-services&#39;
```
Build output:
```
BUILD FAILED in 8s
[!] Your project requires a newer version of the Kotlin Gradle plugin.
    Find the latest version on https://kotlinlang.org/docs/gradle.html#plugin-and-versions, then update project/android/build.gradle:
    ext.kotlin_version = &#39;&lt;latest-version&gt;&#39;
Exception: Gradle task assembleDebug failed with exit code 1
```


Content Type	Original Author	Original Content on Stackoverflow
Question	ghosh_joy	View Question on Stackoverflow
Solution 1 - Android	Agus Andika	View Answer on Stackoverflow

" Error: Member not found: 'packageRoot' " in Flutter

Android Problem Overview

Android Solutions

Solution 1 - Android

Why is there a difference between `0--3//2` and `--3//2`?

Embedding Windows Media Player for all browsers

Attributions