Error when run Android studio IDE

Question

When I launch Android studio I encounter this Error:

    The following SDK components were not installed: build-tools-21.1.1, source-21, sys-img-x86-addon-google_apis-google-21,      extra-android-m2repository, android-21, extra-google-m2repository, addon-google_apis-google-21, tools, platform-tools 

And when I click retry, it gives me the same error:

Answer 1

Configure a proxy for Android studio by modifying other.xml file at:

C:\Users\"Your account"\.AndroidStudio\config\options\other.xml

Then change the proxy configurations as follows:

<option name="USE_HTTP_PROXY" value="true" /> <option name="USE_PROXY_PAC" value="false" /> <option name="PROXY_HOST" value="your_proxy_server" /> <option name="PROXY_PORT" value="your_proxy_port" /> 

Answer 2

code.google.com/p/android/issues/detail?id=82789

1. download build-tools21.1.1 google link or dehkadeco.ir link

2. sdk will be located under C:\Users\<>\AppData\Local\Android\sdk.

3. You may find that 21.1.2 is already in place C:\Users\<>\AppData\Local\Android\sdk\build-tools Create a folder with name "21.1.1" under this.

4. Copy all the files from the downloaded build-tools:21.1.1 under android-5.0 to C:\Users\<>\AppData\Local\Android\sdk\build-tools\21.1.1

5. Start the Android studio now.